Document:

EXHIBIT 10.6

                                ESCROW AGREEMENT

     ESCROW AGREEMENT ("Agreement") dated [Closing Date] is executed and
delivered by and among TREMISIS ENERGY ACQUISITION CORPORATION, a Delaware
corporation ("Tremisis"), LARRY E. LEE, AS THE RAM STOCKHOLDERS' REPRESENTATIVE,
being the representative of the former stockholders of RAM Energy, Inc., a
Delaware corporation (the "Representative"), and CONTINENTAL STOCK TRANSFER &
TRUST COMPANY, as escrow agent (the "Escrow Agent").

     Tremisis, RAM Energy, Inc. ("RAM"), the stockholders of RAM, and RAM Energy
Acquisition, Inc., a Delaware corporation and wholly-owned subsidiary of
Tremisis ("Merger Subsidiary"), are the parties to an Agreement and Plan of
Merger and Reorganization dated as of October 20, 2005 (the "Merger Agreement")
pursuant to which the Merger Subsidiary has merged with and into RAM so that RAM
has become a wholly-owned subsidiary of Tremisis. Pursuant to the Merger
Agreement, Tremisis is to be indemnified in certain respects. The parties desire
to establish an escrow fund as collateral security for the indemnification
obligations under the Merger Agreement. The Representative has been designated
pursuant to the Merger Agreement to represent all of the former stockholders of
RAM (the "Stockholders") and each Permitted Transferee (as hereinafter defined)
of the Stockholders (the Stockholders and all such Permitted Transferees are
hereinafter referred to collectively as the "Owners"), and to act on their
behalf for purposes of this Agreement. Capitalized terms used herein which are
not otherwise defined herein shall have the meanings ascribed to them in the
Merger Agreement.

     The parties agree as follows:

     1. (a) Concurrently with the execution hereof, each of the Stockholders is
delivering to the Escrow Agent, to be held in escrow pursuant to the terms of
this Agreement, stock certificates issued in the name of such Stockholder
representing twelve and one-half percent (12.5%) of the total number of shares
of Parent Common Stock received by such Stockholder pursuant to the Merger
Agreement, together with ten (10) assignments separate from certificate,
executed in blank by such Stockholder. The shares of Parent Common Stock
represented by the stock certificates so delivered by the Stockholders to the
Escrow Agent are herein referred to in the aggregate as the "Escrow Fund." The
Escrow Agent shall maintain a separate account for each Stockholder's, and
subsequent to any transfer permitted pursuant to Paragraph 1(e) hereof, each
Owner's, portion of the Escrow Fund.

         (b) The Escrow Agent hereby agrees to act as escrow agent and to hold,
safeguard and disburse the Escrow Fund pursuant to the terms and conditions
hereof. It shall treat the Escrow Fund as a trust fund in accordance with the
terms of this Agreement and not as the property of Tremisis. The Escrow Agent's
duties hereunder shall terminate upon its distribution of the entire Escrow Fund
in accordance with this Agreement.

         (c) Except as herein provided, the Owners shall retain all of their
rights as stockholders of Tremisis with respect to shares of Parent Common Stock
constituting the Escrow Fund during the period the Escrow Fund is held by the
Escrow Agent (the "Escrow Period"), including, without limitation, the right to
vote their shares of Parent Common Stock included in the Escrow Fund.

         (d) During the Escrow Period, all dividends payable in cash with
respect to the shares of Parent Common Stock included in the Escrow Fund shall
be paid to the Owners, but all dividends payable in stock or other non-cash
property ("Non-Cash Dividends") shall be delivered to the Escrow Agent to hold
in accordance with the terms hereof. As used herein, the term "Escrow Fund"
shall be deemed to include the Non-Cash Dividends distributed thereon, if any.

         (e) During the Escrow Period, no sale, transfer or other disposition
may be made of any or all of the shares of Parent Common Stock in the Escrow
Fund except (i) to a Permitted Transferee (as hereinafter defined), (ii) by
virtue of the laws of descent and distribution upon death of any Owner, or (iii)
pursuant to a qualified domestic relations order; provided, however, that such
permissive transfers may be implemented only upon the respective transferee's
written agreement to be bound by the terms and conditions of this Agreement. As
used in this Agreement, the term Permitted Transferee shall include: (x) members
of a Stockholder's "Immediate Family;" (y) an entity in which (A) a Stockholder
and/or members of a Stockholder's Immediate Family beneficially own 100% of such
entity's voting and non-voting equity securities, or (B) a Stockholder and/or a
member of such Stockholder's Immediate Family is a general partner and in which
such Stockholder and/or members of such Stockholder's Immediate Family
beneficially own 100% of all capital accounts of such entity; and (z) a
revocable trust established by a Stockholder during his lifetime for the benefit
of such Stockholder or for the exclusive benefit of all or any of such
Stockholder's Immediate Family. As used in this Agreement, the term "Immediate
Family" means, with respect to any Stockholder, a spouse, parents, lineal
descendants, the spouse of any lineal descendant, and brothers and sisters (or a
trust, all of whose current beneficiaries are members of an Immediate Family of
the Stockholder). In connection with and as a condition to each permitted
transfer, the Permitted Transferee shall deliver to the Escrow Agent an
assignment separate from certificate executed by the transferring Stockholder,
or where applicable, an order of a court of competent jurisdiction, evidencing
the transfer of shares to the Permitted Transferee, together with ten (10)
assignments separate from certificate executed in blank by the Permitted
Transferee with respect to the shares transferred to the Permitted Transferee.
Upon receipt of such documents, the Escrow Agent shall deliver to Tremisis the
original stock certificate out of which the assigned shares are to be
transferred, together with the executed assignment separate from certificate
executed by the transferring Stockholder, or a copy of the applicable court
order, and shall request that Tremisis issue new certificates representing (m)
the number of shares, if any, that continue to be owned by the transferring
Stockholder, and (n) the number of shares owned by the Permitted Transferee as
the result of such transfer. Tremisis, the transferring Stockholder and the
Permitted Transferee shall cooperate in all respects with the Escrow Agent in
documenting each such transfer and in effectuating the result intended to be
accomplished thereby. During the Escrow Period, no Owner shall pledge

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or grant a security interest in such Owner's shares of Parent Common Stock
included in the Escrow Fund or grant a security interest in their rights under
this Agreement.

     2. (a) Tremisis, acting through the current or former member of Tremisis's
Board of Directors who has been appointed by Tremisis to take all necessary
actions and make all decisions on behalf of Tremisis with respect to its rights
to indemnification under the Merger Agreement (the "Committee"), may make a
claim for indemnification pursuant to the Merger Agreement ("Indemnity Claim")
against the Escrow Fund by giving notice (a "Notice") to the Representative
(with a copy to the Escrow Agent) specifying (i) the covenant, representation,
warranty, agreement, undertaking or obligation contained in the Merger Agreement
which it asserts has been breached or otherwise entitles Tremisis to
indemnification, (ii) in reasonable detail, the nature and dollar amount of any
Indemnity Claim, and (iii) whether the Indemnity Claim results from a Third
Party Claim against Tremisis. The Committee also shall deliver to the Escrow
Agent (with a copy to the Representative), concurrently with its delivery to the
Escrow Agent of the Notice, a certification as to the date on which the Notice
was delivered to the Representative.

         (b) If the Representative shall give a notice to the Committee (with a
copy to the Escrow Agent) (a "Counter Notice"), within 30 days following the
date of receipt (as specified in the Committee's certification) by the
Representative of a copy of the Notice, disputing whether the Indemnity Claim is
indemnifiable under the Merger Agreement, the Committee and the Representative
shall attempt to resolve such dispute by voluntary settlement as provided in
paragraph 2(c) below. If no Counter Notice with respect to an Indemnity Claim is
received by the Escrow Agent from the Representative within such 30-day period,
the Indemnity Claim shall be deemed to be an Established Claim (as hereinafter
defined) for purposes of this Agreement.

         (c) If the Representative delivers a Counter Notice to the Escrow
Agent, the Committee and the Representative shall, during the period of 60 days
following the delivery of such Counter Notice or such greater period of time as
the parties may agree to in writing (with a copy to the Escrow Agent), attempt
to resolve the dispute with respect to which the Counter Notice was given. If
the Committee and the Representative shall reach a settlement with respect to
any such dispute, they shall jointly deliver written notice of such settlement
to the Escrow Agent specifying the terms thereof. If the Committee and the
Representative shall be unable to reach a settlement with respect to a dispute,
such dispute shall be resolved by arbitration pursuant to paragraph 2(d) below.

         (d) If the Committee and the Representative cannot resolve a dispute
prior to expiration of the 60-day period referred to in paragraph 2(c) above (or
such longer period as the parties may have agreed to in writing), then such
dispute shall be submitted (and either party may submit such dispute) for
arbitration before a single arbitrator in Dallas, Texas, in accordance with the
commercial arbitration rules of the American Arbitration Association then in
effect and the provisions of Section 10.12 of the Merger Agreement to the extent
that such provisions do not conflict with the provisions of this paragraph. The
Committee and the Representative shall attempt to

                                       3

agree upon an arbitrator; if they shall be unable to agree upon an arbitrator
within 10 days after the dispute is submitted for arbitration, then either the
Committee or the Representative, upon written notice to the other, may apply for
appointment of such arbitrator by the American Arbitration Association. Each
party shall pay the fees and expenses of counsel used by it and 50% of the fees
and expenses of the arbitrator and of other expenses of the arbitration. The
arbitrator shall render his decision within 90 days after his appointment and
may award costs to either the Committee or the Representative if, in his sole
opinion reasonably exercised, the claims made by any other party had no
reasonable basis and were arbitrary and capricious. Such decision and award
shall be in writing and shall be final and conclusive on the parties, and
counterpart copies thereof shall be delivered to each of the parties. Judgment
may be obtained on the decision of the arbitrator so rendered in any Oklahoma
state sitting in Oklahoma or Tulsa County, or any federal court sitting in
Oklahoma having jurisdiction, and may be enforced in accordance with the law of
the State of Oklahoma. If the arbitrator shall fail to render his decision or
award within such 90-day period, either the Committee or the Representative may
apply to any Oklahoma state court sitting in Oklahoma or Tulsa County, or any
federal court sitting in Oklahoma then having jurisdiction, by action,
proceeding or otherwise, as may be proper to determine the matter in dispute
consistently with the provisions of this Agreement. The parties consent to the
exclusive jurisdiction of the Oklahoma courts sitting in Oklahoma or Tulsa
County, Oklahoma, or any federal court having jurisdiction and sitting in
Oklahoma, for this purpose. The prevailing party (or either party, in the case
of a decision or award rendered in part for each party) shall send a copy of the
arbitration decision or of any judgment of the court to the Escrow Agent.

         (e) As used in this Agreement, "Established Claim" means any (i)
Indemnification Claim deemed established pursuant to the last sentence of
paragraph 2(b) above, (ii) Indemnification Claim resolved in favor of Tremisis
by settlement pursuant to paragraph 2(c) above, resulting in a dollar award to
Tremisis, (iii) Indemnification Claim established by the decision of an
arbitrator pursuant to paragraph 2(d) above, resulting in a dollar award to
Tremisis, (iv) Third Party Claim which has been sustained by a final
determination (after exhaustion of any appeals) of a court of competent
jurisdiction, or (v) Third Party Claim which the Committee and the
Representative have jointly notified the Escrow Agent has been settled in
accordance with the provisions of the Merger Agreement.

         (f) (i) Promptly after an Indemnity Claim becomes an Established Claim,
the Committee and the Representative shall jointly deliver a notice to the
Escrow Agent (a "Joint Notice") directing the Escrow Agent to pay to Tremisis,
and the Escrow Agent promptly shall pay to Tremisis, an amount equal to the
aggregate dollar amount of the Established Claim (or, if at such time there
remains in the Escrow Fund less than the full amount so payable, the full amount
remaining in the Escrow Fund).

               (ii) Payment of an Established Claim shall be made in shares of
Parent Common Stock, pro rata from the account maintained on behalf of each
Owner. For purposes of each payment, such shares shall be valued at the "Fair
Market Value" (as defined below). However, in no event shall the Escrow Agent be
required to calculate

                                       4

Fair Market Value or make a determination of the number of shares to be
delivered to Tremisis in satisfaction of any Established Claim; rather, such
calculation shall be included in and made part of the Joint Notice. The Escrow
Agent shall transfer to Tremisis out of the Escrow Fund that number of shares of
Parent Common Stock necessary to satisfy each Established Claim, as set out in
the Joint Notice. Any dispute between the Committee and the Representative
concerning the calculation of Fair Market Value or the number of shares
necessary to satisfy any Established Claim, or any other dispute regarding a
Joint Notice, shall be resolved between the Committee and the Representative in
accordance with the procedures specified in paragraph 2(d) above, and shall not
involve the Escrow Agent. Each transfer of shares in satisfaction of an
Established Claim shall be made by the Escrow Agent delivering to Tremisis one
or more stock certificates held in each Owner's account evidencing not less than
such Owner's pro rata portion of the aggregate number of shares specified in the
Joint Notice, together with assignments separate from certificate executed in
blank by such Owner and completed by the Escrow Agent in accordance with
instructions included in the Joint Notice. Upon receipt of the stock
certificates and assignments, Tremisis shall deliver to the Escrow Agent new
certificates representing the number of shares owned by each Owner after such
payment. The parties hereto (other than the Escrow Agent) agree that the
foregoing right to make payments of Established Claims in shares of Parent
Common Stock may be made notwithstanding any other agreements restricting or
limiting the ability of any Owner to sell any shares of Tremisis stock or
otherwise. The Committee and the Representative shall be required to exercise
utmost good faith in all matters relating to the preparation and delivery of
each Joint Notice. As used herein, "Fair Market Value" means the average
reported closing price for the Parent Common Stock for the ten trading days
ending on the last trading day prior to the day the Established Claim is paid.

     (iii) Notwithstanding anything herein to the contrary, at such time as an
Indemnification Claim has become an Established Claim, the Representative shall
have the right to substitute for the Escrow Shares that otherwise would be paid
in satisfaction of such claim (the "Claim Shares"), cash in an amount equal to
the Fair Market Value of the Claim Shares ("Substituted Cash"). In such event
(i) the Joint Notice shall include a statement describing the substitution of
Substituted Cash for the Claim Shares, and (ii) substantially contemporaneously
with the delivery of such Joint Notice, the Representative shall cause currently
available funds to be delivered to the Escrow Agent in an amount equal to the
Substituted Cash. Upon receipt of such Joint Notice and Substituted Cash, the
Escrow Agent shall (y) in payment of the Established Claim described in the
Joint Notice, deliver the Substituted Cash to Tremisis in lieu of the Claim
Shares, and (z) cause the Claim Shares to be returned to the Representative.

     3. On the first Business Day after June 30, 2007, upon receipt of a Joint
Notice, the Escrow Agent shall distribute and deliver to each Owner certificates
representing the shares of Parent Common Stock then in such Owner's account in
the Escrow Fund, unless at such time there are any Indemnity Claims with respect
to which Notices have been received but which have not been resolved pursuant to
Section 2 hereof or in respect of which the Escrow Agent has not been notified
of, and received a copy of, a final determination (after exhaustion of any
appeals) by a court of competent

                                       5

jurisdiction, as the case may be (in either case, "Pending Claims"), and which,
if resolved or finally determined in favor of Tremisis, would result in a
payment to Tremisis, in which case the Escrow Agent shall retain, and the total
amount of such distributions to such Owner shall be reduced by, the "Pending
Claims Reserve" (as hereafter defined). The Committee shall certify to the
Escrow Agent the Fair Market Value to be used in calculating the Pending Claims
Reserve and the number of shares of Parent Common Stock to be retained therefor.
Thereafter, if any Pending Claim becomes an Established Claim, the Committee and
the Representative shall deliver to the Escrow Agent a Joint Notice directing
the Escrow Agent to pay to Tremisis an amount in respect thereof determined in
accordance with paragraph 2(f) above, and to deliver to each Owner shares of
Parent Common Stock then in such owner's account in the Escrow Fund having a
Fair Market Value equal to the amount by which the remaining portion of his
account in the Escrow Fund exceeds the then Pending Claims Reserve (determined
as set forth below), all as specified in a Joint Notice. If any Pending Claim is
resolved against Tremisis, the Committee and the Representative shall deliver to
the Escrow Agent a Joint Notice directing the Escrow Agent to pay to each Owner
the amount by which the remaining portion of his account in the Escrow Fund
exceeds the then Pending Claims Reserve. Upon resolution of all Pending Claims,
the Committee and the Representative shall deliver to the Escrow Agent a Joint
Notice directing the Escrow Agent shall pay to such Owner the remaining portion
of his or her account in the Escrow Fund.

     "Pending Claims" shall automatically include the Great Plains Claim (as
defined in the Merger Agreement) if same has not been adjudicated, settled,
dismissed or otherwise resolved in its entirety with respect to RAM and its
subsidiaries and affiliates prior to June 30, 2007.

     As used herein, the "Pending Claims Reserve" shall mean, at the time any
such determination is made, that number of shares of Parent Common Stock in the
Escrow Fund having a Fair Market Value equal to (i) the sum of the aggregate
dollar amounts claimed to be due with respect to all Pending Claims (as shown in
the Notices of such Claims), other than the Great Plains Claim, plus (ii) (a)
the aggregate dollar amount of the potential liability of RAM and its
subsidiaries and affiliates in connection with the Great Plains Claim, if such
potential liability is reasonably quantifiable as of June 30, 2007 or (b) if
such potential liability is not reasonably quantifiable, the lesser of (1) 50%
of the number of shares originally constituting the Escrow Fund and (2) the
number of shares contained in the Escrow Fund that are not otherwise subject to
the Pending Claims Reserve and would be otherwise releasable to the
Stockholders.

     4. The Escrow Agent, the Committee and the Representative shall cooperate
in all respects with one another in the calculation of any amounts determined to
be payable to Tremisis and the Owners in accordance with this Agreement and in
implementing the procedures necessary to effect such payments.

     5. (a) The Escrow Agent undertakes to perform only such duties as are
expressly set forth herein. It is understood that the Escrow Agent is not a
trustee or fiduciary and is acting hereunder merely in a ministerial capacity.

                                       6

         (b) The Escrow Agent shall not be liable for any action taken or
omitted by it in good faith and in the exercise of its own best judgment, and
may rely conclusively and shall be protected in acting upon any order, notice,
demand, certificate, opinion or advice of counsel (including counsel chosen by
the Escrow Agent), statement, instrument, report or other paper or document (not
only as to its due execution and the validity and effectiveness of its
provisions, but also as to the truth and acceptability of any information
therein contained) which is believed by the Escrow Agent to be genuine and to be
signed or presented by the proper person or persons. The Escrow Agent shall not
be bound by any notice or demand, or any waiver, modification, termination or
rescission of this Agreement unless evidenced by a writing delivered to the
Escrow Agent signed by the proper party or parties and, if the duties or rights
of the Escrow Agent are affected, unless it shall have given its prior written
consent thereto.

         (c) The Escrow Agent's sole responsibility upon receipt of any notice
requiring any payment to Tremisis pursuant to the terms of this Agreement or, if
such notice is disputed by the Committee or the Representative, the settlement
with respect to any such dispute, whether by virtue of joint resolution,
arbitration or determination of a court of competent jurisdiction, is to pay to
Tremisis the amount specified in such notice, and the Escrow Agent shall have no
duty to determine the validity, authenticity or enforceability of any
specification or certification made in such notice.

         (d) The Escrow Agent shall not be liable for any action taken by it in
good faith and believed by it to be authorized or within the rights or powers
conferred upon it by this Agreement, and may consult with counsel of its own
choice and shall have full and complete authorization and indemnification under
Section 5(g), below, for any action taken or suffered by it hereunder in good
faith and in accordance with the opinion of such counsel.

         (e) The Escrow Agent may resign at any time and be discharged from its
duties as escrow agent hereunder by its giving the other parties hereto written
notice and such resignation shall become effective as hereinafter provided. Such
resignation shall become effective at such time that the Escrow Agent shall turn
over the Escrow Fund to a successor escrow agent appointed jointly by the
Committee and the Representative. If no new escrow agent is so appointed within
the 60 day period following the giving of such notice of resignation, the Escrow
Agent may deposit the Escrow Fund with any court it reasonably deems
appropriate.

         (f) In the event of a dispute between the parties as to the proper
disposition of the Escrow Fund, the Escrow Agent shall be entitled (but not
required) to deliver the Escrow Fund into the United States District Court for
the Southern District of New York and, upon giving notice to the Committee and
the Representative of such action, shall thereupon be relieved of all further
responsibility and liability.

         (g) The Escrow Agent shall be indemnified and held harmless by Tremisis
from and against any expenses, including counsel fees and disbursements, or

                                       7

loss suffered by the Escrow Agent in connection with any action, suit or other
proceeding involving any claim which in any way, directly or indirectly, arises
out of or relates to this Agreement, the services of the Escrow Agent hereunder,
or the Escrow Fund held by it hereunder, other than expenses or losses arising
from the gross negligence or willful misconduct of the Escrow Agent. Promptly
after the receipt by the Escrow Agent of notice of any demand or claim or the
commencement of any action, suit or proceeding, the Escrow Agent shall notify
the other parties hereto in writing. In the event of the receipt of such notice,
the Escrow Agent, in its sole discretion, may commence an action in the nature
of interpleader in an appropriate court to determine ownership or disposition of
the Escrow Fund or it may deposit the Escrow Fund with the clerk of any
appropriate court and be relieved of any liability with respect thereto or it
may retain the Escrow Fund pending receipt of a final, non-appealable order of a
court having jurisdiction over all of the parties hereto directing to whom and
under what circumstances the Escrow Fund are to be disbursed and delivered.

         (h) The Escrow Agent shall be entitled to reasonable compensation from
Tremisis for all services rendered by it hereunder. The Escrow Agent shall also
be entitled to reimbursement from Tremisis for all expenses paid or incurred by
it in the administration of its duties hereunder including, but not limited to,
all counsel, advisors' and agents' fees and disbursements and all taxes or other
governmental charges.

         (i) From time to time on and after the date hereof, the Committee and
the Representative shall deliver or cause to be delivered to the Escrow Agent
such further documents and instruments and shall do or cause to be done such
further acts as the Escrow Agent shall reasonably request to carry out more
effectively the provisions and purposes of this Agreement, to evidence
compliance herewith or to assure itself that it is protected in acting
hereunder.

         (j) Notwithstanding anything herein to the contrary, the Escrow Agent
shall not be relieved from liability hereunder for its own gross negligence or
its own willful misconduct.

     6. This Agreement expressly sets forth all the duties of the Escrow Agent
with respect to any and all matters pertinent hereto. No implied duties or
obligations shall be read into this Agreement against the Escrow Agent. The
Escrow Agent shall not be bound by the provisions of any agreement among the
parties hereto except this Agreement and shall have no duty to inquire into the
terms and conditions of any agreement made or entered into in connection with
this Agreement, including, without limitation, the Merger Agreement.

     7. This Agreement shall inure to the benefit of and be binding upon the
parties and their respective heirs, successors, assigns and legal
representatives, shall be governed by and construed in accordance with the law
of Delaware applicable to contracts made and to be performed therein except that
issues relating to the rights and obligations of the Escrow Agent shall be
governed by and construed in accordance with the law of New York applicable to
contracts made and to be performed therein. This

                                       8

Agreement cannot be changed or terminated except by a writing signed by the
Committee, the Representative and the Escrow Agent.

     8. The Committee and the Representative each hereby consents to the
exclusive jurisdiction of the Oklahoma state courts sitting in Oklahoma or Tulsa
County and federal courts sitting in Oklahoma with respect to any claim or
controversy arising out of this Agreement. Service of process in any action or
proceeding brought against the Committee or the Representative in respect of any
such claim or controversy may be made upon it by registered mail, postage
prepaid, return receipt requested, at the address specified in Section 9, with a
copy delivered by nationally recognized overnight carrier to Graubard Miller,
The Chrysler Building, 405 Lexington Avenue, New York, N.Y. 10174-1901,
Attention: David Alan Miller, Esq.

     9. All notices and other communications under this Agreement shall be in
writing and shall be deemed given if given by hand or delivered by nationally
recognized overnight carrier, or if given by telecopier and confirmed by mail
(registered or certified mail, postage prepaid, return receipt requested), to
the respective parties as follows:

          A.      If to the Committee, to it at
                  c/o Tremisis Energy Acquisition Corporation
                  1775 Broadway, Suite 604
                  New York, New York 10019
                  Attention: Lawrence S. Coben
                  Telecopier No.: 212-253-4047

                  with a copy to:

                  Graubard Miller
                  The Chrysler Building
                  405 Lexington Avenue
                  New York, New York  10174-1901
                  Attention:  David Alan Miller, Esq.
                  Telecopier No.: 212-818-8881

          B.      If to the Representative, to him at

                  Larry E. Lee
                  Meridian Tower, Suite 650
                  5100 East Skelly Drive
                  Tulsa, OK 74135
                  Telecopier No.: 918-663-9214

                  with a copy to:

                  C. David Stinson

                                       9

                  McAfee & Taft, A Professional Corporation
                  211 North Robinson, 10th Floor Oklahoma
                  City, Oklahoma 73102-7103 Telecopier No.:
                  405-235-9439

          C.      If to the Escrow Agent, to it at:

                  Continental Stock Transfer & Trust Company
                  2 Broadway
                  New York, New York 10004
                  Attention: Steven G. Nelson
                  Telecopier No.: 212-509-5150

or to such other person or address as any of the parties hereto shall specify by
notice in writing to all the other parties hereto.

     10. (a) If this Agreement requires a party to deliver any notice or other
document, and such party refuses to do so, the matter shall be submitted to
arbitration pursuant to paragraph 3(d) of this Agreement.

         (b) All notices delivered to the Escrow Agent shall refer to the
provision of this Agreement under which such notice is being delivered and, if
applicable, shall clearly specify the aggregate dollar amount due and payable to
Tremisis.

         (c) This Agreement may be executed in any number of counterparts, each
of which shall be deemed to be an original instrument and all of which together
shall constitute a single agreement.

     IN WITNESS WHEREOF, each of the parties hereto has duly executed this
Agreement on the date first above written.

                                         TREMISIS ENERGY ACQUISITION CORPORATION

                                         By:
                                             -----------------------------------
                                             Name:
                                             Title:

                                         THE REPRESENTATIVE

                                         ---------------------------------------
                                         Name: Larry E. Lee

                                       10

                                         ESCROW AGENT

                                         CONTINENTAL STOCK TRANSFER &
                                           TRUST COMPANY

                                         By:
                                             -----------------------------------
                                         Name:  Steven G. Nelson
                                         Title: Chairman

                                       11EXHIBIT 10.7
                          REGISTRATION RIGHTS AGREEMENT

     THIS REGISTRATION RIGHTS AGREEMENT (this "Agreement") is entered into as of
the [Closing Date], by and among: Tremisis Energy Acquisition Corporation, a
Delaware corporation (the "Company"), and the undersigned parties listed under
Investor on the signature page hereto (each, an "Investor" and collectively, the
"Investors").

     WHEREAS, the Investors, formerly stockholders of RAM Energy, Inc., a
Delaware corporation ("RAM"), have received shares of Common Stock in exchange
for the shares of stock of RAM formerly held by them in connection with a merger
by which RAM has become a wholly owned subsidiary of the Company (the "Merger");

     WHEREAS, the Investors and the Company desire to enter into this Agreement
to provide the Investors with certain rights relating to the registration of
shares of Common Stock held by them;

     NOW, THEREFORE, in consideration of the mutual covenants and agreements set
forth herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     1. DEFINITIONS. The following capitalized terms used herein have the
following meanings:

         "Agreement" means this Agreement, as amended, restated, supplemented,
or otherwise modified from time to time.

         "Closing Date" shall mean the date the Merger is consummated.

         "Commission" means the Securities and Exchange Commission, or any other
federal agency then administering the Securities Act or the Exchange Act.

         "Common Stock" means the common stock, par value $0.0001 per share, of
the Company.

         "Company" is defined in the preamble to this Agreement.

         "Demand Registration" is defined in Section 2.1.1.

         "Demanding Holder" is defined in Section 2.1.1.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended,
and the rules and regulations of the Commission promulgated thereunder, all as
the same shall be in effect at the time.

         "Form S-3" is defined in Section 2.3.

         "Indemnified Party" is defined in Section 4.3.

         "Indemnifying Party" is defined in Section 4.3.

         "Investor" is defined in the preamble to this Agreement.

         "Investor Indemnified Party" is defined in Section 4.1.

         "Maximum Number of Shares" is defined in Section 2.2.2.

         "Merger" is defined in the first recital to this Agreement.

         "Notices" is defined in Section 6.3.

         "Piggy-Back Registration" is defined in Section 2.2.1.

         "RAM" is defined in the first recital to this Agreement.

         "Register," "registered" and/or "registration" means a registration
effected by preparing and filing a registration statement or similar document in
compliance with the requirements of the Securities Act, and the applicable rules
and regulations promulgated thereunder, and such registration statement becoming
effective.

         "Registrable Securities" mean all of the shares of Common Stock issued
to Investors in the Merger. Registrable Securities include any warrants, shares
of capital stock or other securities of the Company issued as a dividend or
other distribution with respect to or in exchange for or in replacement of such
shares of Common Stock. As to any particular Registrable Securities, such
securities shall cease to be Registrable Securities when: (a) a Registration
Statement with respect to the sale of such securities shall have become
effective under the Securities Act and such securities shall have been sold,
transferred, disposed of or exchanged in accordance with such Registration
Statement; (b) such securities shall have been otherwise transferred, new
certificates for them not bearing a legend restricting further transfer shall
have been delivered by the Company and subsequent public distribution of them
shall not require registration under the Securities Act; (c) such securities
shall have ceased to be outstanding, or (d) such securities are freely salable
under Rule 144(k) without volume limitations.

         "Registration Statement" means a registration statement filed by the
Company with the Commission in compliance with the Securities Act and the rules
and regulations promulgated thereunder for a public offering and sale of Common
Stock (other than a registration statement on Form S-4 or Form S-8, or their
successors, or any registration statement covering only securities proposed to
be issued in exchange for securities or assets of another entity).

         "Release Date" means the date that is two years after the Closing Date.

         "Securities Act" means the Securities Act of 1933, as amended, and the
rules and regulations of the Commission promulgated thereunder, all as the same
shall be in effect at the time.

         "Underwriter" means a securities dealer who purchases any Registrable
Securities as principal in an underwritten offering and not as part of such
dealer's market-making activities.

                                       2

     2. REGISTRATION RIGHTS.

         2.1 Demand Registration.

               2.1.1. Request for Registration. At any time and from time to
time, but not prior to three (3) months following any underwritten public
offering by the Company, and, except for registrations effected pursuant to
Section 2.3, not earlier than the Release Date, the holders of a
majority-in-interest of the Registrable Securities held by the Investors or the
transferees of the Investors, may make a written demand for registration under
the Securities Act of all or part of their Registrable Securities (a "Demand
Registration"); provided, however, that during the period ending December 31,
2008, no such demand shall be made except with the prior written consent of
holders of Registrable Securities owing 80% of the then outstanding Registrable
Securities. Any demand for a Demand Registration shall specify the number of
shares of Registrable Securities proposed to be sold and the intended method(s)
of distribution thereof. Each Demand Registration, other than one effected
pursuant to Section 2.3, shall be subject to an aggregate price threshold of not
less than $10,000,000. The Company will notify all holders of Registrable
Securities of the demand, and each holder of Registrable Securities who wishes
to include all or a portion of such holder's Registrable Securities in the
Demand Registration (each such holder including shares of Registrable Securities
in such registration, a "Demanding Holder") shall so notify the Company within
thirty (30) days after the receipt by the holder of the notice from the Company.
Upon any such request, the Demanding Holders shall be entitled to have their
Registrable Securities included in the Demand Registration, subject to the
provisos set forth in Section 3.1.1. The Company shall not be obligated to
effect more than an aggregate of two (2) Demand Registrations under this Section
2.1.1 in respect of Registrable Securities other than those effected pursuant to
Section 2.3.

               2.1.2. Effective Registration. A registration will not count as a
Demand Registration until the Registration Statement filed with the Commission
with respect to such Demand Registration has been declared effective and the
Company has complied with all of its obligations under this Agreement with
respect thereto; provided, however, that if, after such Registration Statement
has been declared effective, the offering of Registrable Securities pursuant to
a Demand Registration is interfered with by any stop order or injunction of the
Commission or any court, the Registration Statement with respect to such Demand
Registration will be deemed not to have been declared effective, unless and
until, (i) such stop order or injunction is removed, rescinded or otherwise
terminated, and (ii) a majority-in-interest of the Demanding Holders thereafter
elect to continue the offering; provided, further, that the Company shall not be
obligated to file a second Registration Statement until a Registration Statement
that has been filed is counted as a Demand Registration or is terminated.

               2.1.3. Underwritten Offering. If a majority-in-interest of the
Demanding Holders so elect and such holders so advise the Company as part of
their written demand for a Demand Registration, the offering of such Registrable
Securities pursuant to such Demand Registration shall be in the form of an
underwritten offering. In such event, the right of any holder to include its
Registrable Securities in such registration shall be conditioned upon such
holder's participation in such underwriting and the inclusion of such holder's
Registrable Securities in the underwriting to the extent provided herein. All
Demanding Holders proposing to distribute their securities through such
underwriting shall enter into an underwriting agreement

                                       3

in customary form with the Underwriter or Underwriters selected for such
underwriting by a majority-in-interest of the holders initiating the Demand
Registration.

         2.2 Piggy-Back Registration.

               2.2.1. Piggy-Back Rights. If at any time on or after the Closing
Date the Company proposes to file a Registration Statement under the Securities
Act with respect to an offering of equity securities, or securities or other
obligations exercisable or exchangeable for, or convertible into, equity
securities, by the Company for its own account or for stockholders of the
Company for their account (or by the Company and by stockholders of the
Company), other than a Registration Statement (i) filed in connection with any
employee stock option or other benefit plan, (ii) for an exchange offer or
offering of securities solely to the Company's existing stockholders, (iii) for
an offering of debt that is convertible into equity securities of the Company or
(iv) for a dividend reinvestment plan, then the Company shall (x) give written
notice of such proposed filing to the holders of Registrable Securities as soon
as practicable but in no event less than twenty (20) days before the anticipated
filing date, which notice shall describe the amount and type of securities to be
included in such offering, the intended method(s) of distribution, and the name
of the proposed managing Underwriter or Underwriters, if any, of the offering,
and (y) offer to the holders of Registrable Securities in such notice the
opportunity to register the sale of such number of shares of Registrable
Securities as such holders may request in writing within ten (10) days following
receipt of such notice (a "Piggy-Back Registration"). The Company shall cause
such Registrable Securities to be included in such registration and shall use
its best efforts to cause the managing Underwriter or Underwriters of a proposed
underwritten offering to permit the Registrable Securities requested to be
included in a Piggy-Back Registration to be included on the same terms and
conditions as any similar securities of the Company and to permit the sale or
other disposition of such Registrable Securities in accordance with the intended
method(s) of distribution thereof. All holders of Registrable Securities
proposing to distribute their securities through a Piggy-Back Registration that
involves an Underwriter or Underwriters shall enter into an underwriting
agreement in customary form with the Underwriter or Underwriters selected for
such Piggy-Back Registration.

               2.2.2. Reduction of Offering. If the managing Underwriter or
Underwriters for a Piggy-Back Registration that is to be an underwritten
offering advises the Company and the holders of Registrable Securities in
writing that the dollar amount or number of shares of Common Stock which the
Company desires to sell, taken together with shares of Common Stock, if any, as
to which registration has been demanded pursuant to written contractual
arrangements with persons other than the holders of Registrable Securities
hereunder, the Registrable Securities as to which registration has been
requested under this Section 2.2, and the shares of Common Stock, if any, as to
which registration has been requested pursuant to the written contractual
piggy-back registration rights of other stockholders of the Company, exceeds the
maximum number of shares that, in the reasonable judgment of the Underwriters,
can be effectively sold in the market at that time ("Maximum Number of Shares"),
then the Company shall include in any such registration:

                    (i) If the registration is undertaken for the Company's
account: (A) first, the shares of Common Stock or other securities that the
Company desires to sell that can be sold without exceeding the Maximum Number of
Shares; (B) second, to the extent that

                                       4

the Maximum Number of Shares has not been reached under the foregoing clause
(A), the shares of Common Stock, if any, including the Registrable Securities,
as to which registration has been requested pursuant to written contractual
piggy-back registration rights of security holders (pro rata in accordance with
the number of shares of Common Stock which each such person has actually
requested to be included in such registration, regardless of the number of
shares of Common Stock with respect to which such persons have the right to
request such inclusion) that can be sold without exceeding the Maximum Number of
Shares; and

                    (ii) If the registration is a "demand" registration
undertaken at the demand of persons other than the holders of Registrable
Securities pursuant to written contractual arrangements with such persons, (A)
first, the shares of Common Stock for the account of the demanding persons that
can be sold without exceeding the Maximum Number of Shares; (B) second, to the
extent that the Maximum Number of Shares has not been reached under the
foregoing clause (A), the shares of Common Stock or other securities that the
Company desires to sell that can be sold without exceeding the Maximum Number of
Shares; and (C) third, to the extent that the Maximum Number of Shares has not
been reached under the foregoing clauses (A) and (B), the shares of Common
Stock, if any, including the Registrable Securities, as to which registration
has been requested pursuant to written contractual piggy-back registration
rights of security holders (pro rata in accordance with the number of shares of
Common Stock which each such person has actually requested to be included in
such registration, regardless of the number of shares of Common Stock with
respect to which such persons have the right to request such inclusion).

               2.2.3. Withdrawal. Any holder of Registrable Securities may elect
to withdraw such holder's request for inclusion of Registrable Securities in any
Piggy-Back Registration by giving written notice to the Company of such request
to withdraw prior to the effectiveness of the Registration Statement. The
Company may also elect to withdraw a registration statement at any time prior to
the effectiveness of the Registration Statement. Notwithstanding any such
withdrawal, the Company shall pay expenses incurred by the holders of
Registrable Securities in connection with such Piggy-Back Registration as
provided in Section 3.3.

         2.3 Registrations on Form S-3. The holders of Registrable Securities
may at any time and from time to time request in writing that the Company
register the resale of any or all of such Registrable Securities on Form S-3 or
any similar short-form registration which may be available at such time ("Form
S-3"); provided, however, that during the period ending December 31, 2008, no
such request shall be made except with the prior written consent of holders of
Registrable Securities owing 80% of the then outstanding Registrable Securities.
The number of shares of Common Stock received by the Investors in the Merger
that shall be eligible for sale under a Form S-3 shall be limited to (a) 20% of
such shares during the period commencing on the day that is six (6) months after
the Closing Date and continuing through the day immediately preceding the day
that is one (1) year after the Closing Date, (b) an additional 20% (an aggregate
of 40%) of such shares during the period commencing on the day that is one year
after the Closing Date and continuing through the day immediately preceding the
day that is eighteen (18) months after the Closing Date, and (c) an additional
20% (an aggregate of 60%) of such shares during the period commencing on the day
that is eighteen (18) months after the Closing Date and continuing through the
day immediately preceding the day that is two (2) years

                                       5

after the Closing Date; and provided, further, however, that the Company shall
not be obligated to effect such request through an underwritten offering. Upon
receipt of such written request, the Company will promptly give written notice
of the proposed registration to all other holders of Registrable Securities,
and, as soon as practicable thereafter, effect the registration of all or such
portion of such holder's or holders' Registrable Securities as are specified in
such request, together with all or such portion of the Registrable Securities of
any other holder or holders joining in such request as are specified in a
written request given within fifteen (15) days after receipt of such written
notice from the Company; provided, however, that the Company shall not be
obligated to effect any such registration pursuant to this Section 2.3: (i) if
Form S-3 is not available for such offering; or (ii) if the holders of the
Registrable Securities, together with the holders of any other securities of the
Company entitled to inclusion in such registration, propose to sell Registrable
Securities and such other securities (if any) at any aggregate price to the
public of less than $10,000,000. Registrations effected pursuant to this Section
2.3 shall not be counted as Demand Registrations effected pursuant to Section
2.1. Registrable Securities registered pursuant to a Form S-3 registration under
this Section shall still remain subject to the limitations of the Lock-Up
Agreements dated October 20, 2005, executed by the Investors in favor of the
Company.

     3. REGISTRATION PROCEDURES.

         3.1 Filings; Information. Whenever the Company is required to effect
the registration of any Registrable Securities pursuant to Section 2, the
Company shall use its best efforts to effect the registration and sale of such
Registrable Securities in accordance with the intended method(s) of distribution
thereof as expeditiously as practicable, and in connection with any such
request:

               3.1.1. Filing Registration Statement. The Company shall, as
expeditiously as possible and in any event within sixty (60) days after receipt
of a request for a Demand Registration pursuant to Section 2.1, prepare and file
with the Commission a Registration Statement on any form for which the Company
then qualifies or which counsel for the Company shall deem appropriate and which
form shall be available for the sale of all Registrable Securities to be
registered thereunder in accordance with the intended method(s) of distribution
thereof, and shall use its best efforts to cause such Registration Statement to
become and remain effective for the period required by Section 3.1.3; provided,
however, that the Company shall have the right to defer any Demand Registration
for up to thirty (30) days, and any Piggy-Back Registration for such period as
may be applicable to deferment of any demand registration to which such
Piggy-Back Registration relates, in each case if the Company shall furnish to
the holders a certificate signed by the Chief Executive Officer of the Company
stating that, in the good faith judgment of the Board of Directors of the
Company, it would be materially detrimental to the Company and its stockholders
for such Registration Statement to be effected at such time; provided further,
however, that the Company shall not have the right to exercise the right set
forth in the immediately preceding proviso more than once in any 365-day period
in respect of a Demand Registration hereunder.

               3.1.2. Copies. The Company shall, prior to filing a Registration
Statement or prospectus, or any amendment or supplement thereto, furnish without
charge to the holders of Registrable Securities included in such registration,
and such holders' legal counsel,

                                       6

copies of such Registration Statement as proposed to be filed, each amendment
and supplement to such Registration Statement (in each case including all
exhibits thereto and documents incorporated by reference therein), the
prospectus included in such Registration Statement (including each preliminary
prospectus), and such other documents as the holders of Registrable Securities
included in such registration or legal counsel for any such holders may request
in order to facilitate the disposition of the Registrable Securities owned by
such holders.

               3.1.3. Amendments and Supplements. The Company shall prepare and
file with the Commission such amendments, including post-effective amendments,
and supplements to such Registration Statement and the prospectus used in
connection therewith as may be necessary to keep such Registration Statement
effective and in compliance with the provisions of the Securities Act until all
Registrable Securities and other securities covered by such Registration
Statement have been disposed of in accordance with the intended method(s) of
distribution set forth in such Registration Statement (which period shall not
exceed the sum of one hundred eighty (180) days plus any period during which any
such disposition is interfered with by any stop order or injunction of the
Commission or any governmental agency or court) or such securities have been
withdrawn.

               3.1.4. Notification. After the filing of a Registration
Statement, the Company shall promptly, and in no event more than two (2)
business days after such filing, notify the holders of Registrable Securities
included in such Registration Statement of such filing, and shall further notify
such holders promptly and confirm such advice in writing in all events within
two (2) business days of the occurrence of any of the following: (i) when such
Registration Statement becomes effective; (ii) when any post-effective amendment
to such Registration Statement becomes effective; (iii) the issuance or
threatened issuance by the Commission of any stop order (and the Company shall
take all actions required to prevent the entry of such stop order or to remove
it if entered); and (iv) any request by the Commission for any amendment or
supplement to such Registration Statement or any prospectus relating thereto or
for additional information or of the occurrence of an event requiring the
preparation of a supplement or amendment to such prospectus so that, as
thereafter delivered to the purchasers of the securities covered by such
Registration Statement, such prospectus will not contain an untrue statement of
a material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, and promptly make
available to the holders of Registrable Securities included in such Registration
Statement any such supplement or amendment; except that before filing with the
Commission a Registration Statement or prospectus or any amendment or supplement
thereto, including documents incorporated by reference, the Company shall
furnish to the holders of Registrable Securities included in such Registration
Statement and to the legal counsel for any such holders, copies of all such
documents proposed to be filed sufficiently in advance of filing to provide such
holders and legal counsel with a reasonable opportunity to review such documents
and comment thereon, and the Company shall not file any Registration Statement
or prospectus or amendment or supplement thereto, including documents
incorporated by reference, to which such holders or their legal counsel shall
object.

               3.1.5. State Securities Laws Compliance. The Company shall use
its best efforts to (i) register or qualify the Registrable Securities covered
by the Registration Statement under such securities or "blue sky" laws of such
jurisdictions in the United States as the holders

                                       7

of Registrable Securities included in such Registration Statement (in light of
their intended plan of distribution) may request and (ii) take such action
necessary to cause such Registrable Securities covered by the Registration
Statement to be registered with or approved by such other Governmental
Authorities as may be necessary by virtue of the business and operations of the
Company and do any and all other acts and things that may be necessary or
advisable to enable the holders of Registrable Securities included in such
Registration Statement to consummate the disposition of such Registrable
Securities in such jurisdictions; provided, however, that the Company shall not
be required to qualify generally to do business in any jurisdiction where it
would not otherwise be required to qualify but for this paragraph (e) or subject
itself to taxation in any such jurisdiction.

               3.1.6. Agreements for Disposition. The Company shall enter into
customary agreements (including, if applicable, an underwriting agreement in
customary form) and take such other actions as are reasonably required in order
to expedite or facilitate the disposition of such Registrable Securities. The
representations, warranties and covenants of the Company in any underwriting
agreement which are made to or for the benefit of any Underwriters, to the
extent applicable, shall also be made to and for the benefit of the holders of
Registrable Securities included in such registration statement. No holder of
Registrable Securities included in such registration statement shall be required
to make any representations or warranties in the underwriting agreement except,
if applicable, with respect to such holder's organization, good standing,
authority, title to Registrable Securities, lack of conflict of such sale with
such holder's material agreements and organizational documents, and with respect
to written information relating to such holder that such holder has furnished in
writing expressly for inclusion in such Registration Statement.

               3.1.7. Cooperation. The principal executive officer of the
Company, the principal financial officer of the Company, the principal
accounting officer of the Company and all other officers and members of the
management of the Company shall cooperate fully in any offering of Registrable
Securities hereunder, which cooperation shall include, without limitation, the
preparation of the Registration Statement with respect to such offering and all
other offering materials and related documents, and participation in meetings
with Underwriters, attorneys, accountants and potential investors.

               3.1.8. Records. The Company shall make available for inspection
by the holders of Registrable Securities included in such Registration
Statement, any Underwriter participating in any disposition pursuant to such
registration statement and any attorney, accountant or other professional
retained by any holder of Registrable Securities included in such Registration
Statement or any Underwriter, all financial and other records, pertinent
corporate documents and properties of the Company, as shall be necessary to
enable them to exercise their due diligence responsibility, and cause the
Company's officers, directors and employees to supply all information requested
by any of them in connection with such Registration Statement.

               3.1.9. Opinions and Comfort Letters. The Company shall furnish to
each holder of Registrable Securities included in any Registration Statement a
signed counterpart, addressed to such holder, of (i) any opinion of counsel to
the Company delivered to any Underwriter and (ii) any comfort letter from the
Company's independent public accountants delivered to any Underwriter. In the
event no legal opinion is delivered to any Underwriter, the

                                       8

Company shall furnish to each holder of Registrable Securities included in such
Registration Statement, at any time that such holder elects to use a prospectus,
an opinion of counsel to the Company to the effect that the Registration
Statement containing such prospectus has been declared effective and that no
stop order is in effect.

               3.1.10. Earnings Statement. The Company shall comply with all
applicable rules and regulations of the Commission and the Securities Act, and
make available to its stockholders, as soon as practicable, an earnings
statement covering a period of twelve (12) months, beginning within three (3)
months after the effective date of the registration statement, which earnings
statement shall satisfy the provisions of Section 11(a) of the Securities Act
and Rule 158 thereunder.

               3.1.11. Listing. The Company shall use its best efforts to cause
all Registrable Securities included in any registration to be listed on such
exchanges or otherwise designated for trading in the same manner as similar
securities issued by the Company are then listed or designated or, if no such
similar securities are then listed or designated, in a manner satisfactory to
the holders of a majority of the Registrable Securities included in such
registration.

         3.2 Obligation to Suspend Distribution. Upon receipt of any notice from
the Company of the happening of any event of the kind described in Section
3.1.4(iv), or, in the case of a resale registration on Form S-3 pursuant to
Section 2.3 hereof, upon any suspension by the Company, pursuant to a written
insider trading compliance program adopted by the Company's Board of Directors,
of the ability of all "insiders" covered by such program to transact in the
Company's securities because of the existence of material non-public
information, each holder of Registrable Securities included in any registration
shall immediately discontinue disposition of such Registrable Securities
pursuant to the Registration Statement covering such Registrable Securities
until such holder receives the supplemented or amended prospectus contemplated
by Section 3.1.4(iv) or the restriction on the ability of "insiders" to transact
in the Company's securities is removed, as applicable, and, if so directed by
the Company, each such holder will deliver to the Company all copies, other than
permanent file copies then in such holder's possession, of the most recent
prospectus covering such Registrable Securities at the time of receipt of such
notice.

         3.3 Registration Expenses. The Company shall bear all costs and
expenses incurred in connection with any Demand Registration pursuant to Section
2.1, any Piggy-Back Registration pursuant to Section 2.2, and any registration
on Form S-3 effected pursuant to Section 2.3, and all expenses incurred in
performing or complying with its other obligations under this Agreement, whether
or not the Registration Statement becomes effective, including, without
limitation: (i) all registration and filing fees; (ii) fees and expenses of
compliance with securities or "blue sky" laws (including fees and disbursements
of counsel in connection with blue sky qualifications of the Registrable
Securities); (iii) printing expenses; (iv) the Company's internal expenses
(including, without limitation, all salaries and expenses of its officers and
employees); (v) the fees and expenses incurred in connection with the listing of
the Registrable Securities as required by Section 3.1.11; (vi) National
Association of Securities Dealers, Inc. fees; (vii) fees and disbursements of
counsel for the Company and fees and expenses for independent certified public
accountants retained by the Company (including the expenses or

                                       9

costs associated with the delivery of any opinions or comfort letters requested
pursuant to Section 3.1.9); (viii) the fees and expenses of any special experts
retained by the Company in connection with such registration and (ix) the fees
and expenses of one legal counsel selected by the holders of a
majority-in-interest of the Registrable Securities included in such
registration. The Company shall have no obligation to pay any underwriting
discounts or selling commissions attributable to the Registrable Securities
being sold by the holders thereof, which underwriting discounts or selling
commissions shall be borne by such holders. Additionally, in an underwritten
offering, all selling stockholders and the Company shall bear the expenses of
the underwriter pro rata in proportion to the respective amount of shares each
is selling in such offering.

         3.4 Information. The holders of Registrable Securities shall provide
such information as may reasonably be requested by the Company, or the managing
Underwriter, if any, in connection with the preparation of any Registration
Statement, including amendments and supplements thereto, in order to effect the
registration of any Registrable Securities under the Securities Act pursuant to
Section 2 and in connection with the Company's obligation to comply with federal
and applicable state securities laws.

     4. INDEMNIFICATION AND CONTRIBUTION.

         4.1 Indemnification by the Company. The Company agrees to indemnify and
hold harmless each Investor and each other holder of Registrable Securities, and
each of their respective officers, employees, affiliates, directors, partners,
members, attorneys and agents, and each person, if any, who controls an Investor
and each other holder of Registrable Securities (within the meaning of Section
15 of the Securities Act or Section 20 of the Exchange Act) (each, an "Investor
Indemnified Party"), from and against any expenses, losses, judgments, claims,
damages or liabilities, whether joint or several, arising out of or based upon
any untrue statement (or allegedly untrue statement) of a material fact
contained in any Registration Statement under which the sale of such Registrable
Securities was registered under the Securities Act, any preliminary prospectus,
final prospectus or summary prospectus contained in the Registration Statement,
or any amendment or supplement to such Registration Statement, or arising out of
or based upon any omission (or alleged omission) to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading, or any violation by the Company of the Securities Act or any rule or
regulation promulgated thereunder applicable to the Company and relating to
action or inaction required of the Company in connection with any such
registration; and the Company shall promptly reimburse the Investor Indemnified
Party for any legal and any other expenses reasonably incurred by such Investor
Indemnified Party in connection with investigating and defending any such
expense, loss, judgment, claim, damage, liability or action; provided, however,
that the Company will not be liable in any such case to the extent that any such
expense, loss, claim, damage or liability arises out of or is based upon any
untrue statement or allegedly untrue statement or omission or alleged omission
made in such Registration Statement, preliminary prospectus, final prospectus,
or summary prospectus, or any such amendment or supplement, in reliance upon and
in conformity with information furnished to the Company, in writing, by such
selling holder expressly for use therein. The Company also shall indemnify any
Underwriter of the Registrable Securities, their officers, affiliates,
directors, partners, members and agents and each person who controls such

                                       10

Underwriter on substantially the same basis as that of the indemnification
provided above in this Section 4.1.

         4.2 Indemnification by Holders of Registrable Securities. Each selling
holder of Registrable Securities will, in the event that any registration is
being effected under the Securities Act pursuant to this Agreement of any
Registrable Securities held by such selling holder, indemnify and hold harmless
the Company, each of its directors and officers and each underwriter (if any),
and each other person, if any, who controls such selling holder or such
underwriter within the meaning of the Securities Act, against any losses,
claims, judgments, damages or liabilities, whether joint or several, insofar as
such losses, claims, judgments, damages or liabilities (or actions in respect
thereof) arise out of or are based upon any untrue statement or allegedly untrue
statement of a material fact contained in any Registration Statement under which
the sale of such Registrable Securities was registered under the Securities Act,
any preliminary prospectus, final prospectus or summary prospectus contained in
the Registration Statement, or any amendment or supplement to the Registration
Statement, or arise out of or are based upon any omission or the alleged
omission to state a material fact required to be stated therein or necessary to
make the statement therein not misleading, if the statement or omission was made
in reliance upon and in conformity with information furnished in writing to the
Company by such selling holder expressly for use therein, and shall reimburse
the Company, its directors and officers, and each such controlling person for
any legal or other expenses reasonably incurred by any of them in connection
with investigation or defending any such loss, claim, damage, liability or
action. Each selling holder's indemnification obligations hereunder shall be
several and not joint and shall be limited to the amount of any net proceeds
actually received by such selling holder.

         4.3 Conduct of Indemnification Proceedings. Promptly after receipt by
any person of any notice of any loss, claim, damage or liability or any action
in respect of which indemnity may be sought pursuant to Section 4.1 or 4.2, such
person (the "Indemnified Party") shall, if a claim in respect thereof is to be
made against any other person for indemnification hereunder, notify such other
person (the "Indemnifying Party") in writing of the loss, claim, judgment,
damage, liability or action; provided, however, that the failure by the
Indemnified Party to notify the Indemnifying Party shall not relieve the
Indemnifying Party from any liability which the Indemnifying Party may have to
such Indemnified Party hereunder, except and solely to the extent the
Indemnifying Party is actually prejudiced by such failure. If the Indemnified
Party is seeking indemnification with respect to any claim or action brought
against the Indemnified Party, then the Indemnifying Party shall be entitled to
participate in such claim or action, and, to the extent that it wishes, jointly
with all other Indemnifying Parties, to assume control of the defense thereof
with counsel satisfactory to the Indemnified Party. After notice from the
Indemnifying Party to the Indemnified Party of its election to assume control of
the defense of such claim or action, the Indemnifying Party shall not be liable
to the Indemnified Party for any legal or other expenses subsequently incurred
by the Indemnified Party in connection with the defense thereof other than
reasonable costs of investigation; provided, however, that in any action in
which both the Indemnified Party and the Indemnifying Party are named as
defendants, the Indemnified Party shall have the right to employ separate
counsel (but no more than one such separate counsel) to represent the
Indemnified Party and its controlling persons who may be subject to liability
arising out of any claim in respect of which indemnity may be sought by the
Indemnified Party against the Indemnifying Party, with the fees and

                                       11

expenses of such counsel to be paid by such Indemnifying Party if, based upon
the written opinion of counsel of such Indemnified Party, representation of both
parties by the same counsel would be inappropriate due to actual or potential
differing interests between them. No Indemnifying Party shall, without the prior
written consent of the Indemnified Party, consent to entry of judgment or effect
any settlement of any claim or pending or threatened proceeding in respect of
which the Indemnified Party is or could have been a party and indemnity could
have been sought hereunder by such Indemnified Party, unless such judgment or
settlement includes an unconditional release of such Indemnified Party from all
liability arising out of such claim or proceeding.

         4.4 Contribution.

               4.4.1. If the indemnification provided for in the foregoing
Sections 4.1, 4.2 and 4.3 is unavailable to any Indemnified Party in respect of
any loss, claim, damage, liability or action referred to herein, then each such
Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall
contribute to the amount paid or payable by such Indemnified Party as a result
of such loss, claim, damage, liability or action in such proportion as is
appropriate to reflect the relative fault of the Indemnified Parties and the
Indemnifying Parties in connection with the actions or omissions which resulted
in such loss, claim, damage, liability or action, as well as any other relevant
equitable considerations. The relative fault of any Indemnified Party and any
Indemnifying Party shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by such Indemnified Party or such Indemnifying Party and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such statement or omission.

               4.4.2. The parties hereto agree that it would not be just and
equitable if contribution pursuant to this Section 4.4 were determined by pro
rata allocation or by any other method of allocation which does not take account
of the equitable considerations referred to in the immediately preceding Section
4.4.1. The amount paid or payable by an Indemnified Party as a result of any
loss, claim, damage, liability or action referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any legal or other expenses incurred by such Indemnified Party in
connection with investigating or defending any such action or claim.
Notwithstanding the provisions of this Section 4.4, no holder of Registrable
Securities shall be required to contribute any amount in excess of the dollar
amount of the net proceeds (after payment of any underwriting fees, discounts,
commissions or taxes) actually received by such holder from the sale of
Registrable Securities which gave rise to such contribution obligation. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Securities Act) shall be entitled to contribution from any person
who was not guilty of such fraudulent misrepresentation.

     5. UNDERWRITING AND DISTRIBUTION.

         5.1 Rule 144. The Company covenants that it shall file any reports
required to be filed by it under the Securities Act and the Exchange Act and
shall take such further action as the holders of Registrable Securities may
reasonably request, all to the extent required from time to time to enable such
holders to sell Registrable Securities without registration under the

                                       12

Securities Act within the limitation of the exemptions provided by Rule 144
under the Securities Act, as such Rules may be amended from time to time, or any
similar Rule or regulation hereafter adopted by the Commission.

     6. MISCELLANEOUS.

         6.1 Other Registration Rights. The Company represents and warrants
that, except as disclosed to Investors in the Agreement and Plan of Merger,
dated October __, 2005, pursuant to which the Merger was effected, no person,
other than a holder of the Registrable Securities, has any right to require the
Company to register any shares of the Company's capital stock for sale or to
include shares of the Company's capital stock in any registration filed by the
Company for the sale of shares of capital stock for its own account or for the
account of any other person.

         6.2 Assignment; No Third Party Beneficiaries. This Agreement and the
rights, duties and obligations of the Company hereunder may not be assigned or
delegated by the Company in whole or in part. This Agreement and the rights,
duties and obligations of the holders of Registrable Securities hereunder may be
freely assigned or delegated by such holder of Registrable Securities in
conjunction with and to the extent of any transfer of Registrable Securities by
any such holder. This Agreement and the provisions hereof shall be binding upon
and shall inure to the benefit of each of the parties and their respective
successors and the permitted assigns of the Investor or holder of Registrable
Securities or of any assignee of the Investor or holder of Registrable
Securities. This Agreement is not intended to confer any rights or benefits on
any persons that are not party hereto other than as expressly set forth in
Article 4 and this Section 6.2.

         6.3 Notices. All notices, demands, requests, consents, approvals or
other communications (collectively, "Notices") required or permitted to be given
hereunder or which are given with respect to this Agreement shall be in writing
and shall be personally served, delivered by reputable air courier service with
charges prepaid, or transmitted by hand delivery, telegram, telex or facsimile,
addressed as set forth below, or to such other address as such party shall have
specified most recently by written notice. Notice shall be deemed given on the
date of service or transmission if personally served or transmitted by telegram,
telex or facsimile; provided, that if such service or transmission is not on a
business day or is after normal business hours, then such notice shall be deemed
given on the next business day. Notice otherwise sent as provided herein shall
be deemed given on the next business day following timely delivery of such
notice to a reputable air courier service with an order for next-day delivery.

               To the Company:

                                       13

               Tremisis Energy Acquisition Corporation
               1775 Broadway
               Suite 604
               New York, New York 10019
               Attention:  Chairman

               with a copy to:

               Graubard Miller
               405 Lexington Avenue
               New York, NY 10174-1901
               Attention: David Miller

               To an Investor, to:

               Larry E. Lee
               RAM Energy, Inc.
               5100 E. Skelly Drive
               Suite 650
               Tulsa, Oklahoma 74135

               Danish Knights, A Limited Partnership
               Attn:  Britani Talley Bowman
               8620 Berkwick Drive
               Plano, TX 75025

               C. David Stinson
               McAfee & Taft, A Professional Corporation
               211 North Robinson, 10th Floor
               Oklahoma City, Oklahoma 73102-7103

               with a copy to:

               C. David Stinson
               McAfee & Taft, A Professional Corporation
               211 North Robinson, 10th Floor
               Oklahoma City, Oklahoma 73102-7103

         6.4 Severability. This Agreement shall be deemed severable, and the
invalidity or unenforceability of any term or provision hereof shall not affect
the validity or enforceability of this Agreement or of any other term or
provision hereof. Furthermore, in lieu of any such invalid or unenforceable term
or provision, the parties hereto intend that there shall be added as a part of
this Agreement a provision as similar in terms to such invalid or unenforceable
provision as may be possible and be valid and enforceable.

                                       14

         6.5 Counterparts. This Agreement may be executed in multiple
counterparts, each of which shall be deemed an original, and all of which taken
together shall constitute one and the same instrument.

         6.6 Entire Agreement. This Agreement (including all agreements entered
into pursuant hereto and all certificates and instruments delivered pursuant
hereto and thereto) constitute the entire agreement of the parties with respect
to the subject matter hereof and supersede all prior and contemporaneous
agreements, representations, understandings, negotiations and discussions
between the parties, whether oral or written.

         6.7 Modifications and Amendments. No amendment, modification or
termination of this Agreement shall be binding upon any party unless executed in
writing by such party.

         6.8 Titles and Headings. Titles and headings of sections of this
Agreement are for convenience only and shall not affect the construction of any
provision of this Agreement.

         6.9 Waivers and Extensions. Any party to this Agreement may waive any
right, breach or default which such party has the right to waive, provided that
such waiver will not be effective against the waiving party unless it is in
writing, is signed by such party, and specifically refers to this Agreement.
Waivers may be made in advance or after the right waived has arisen or the
breach or default waived has occurred. Any waiver may be conditional. No waiver
of any breach of any agreement or provision herein contained shall be deemed a
waiver of any preceding or succeeding breach thereof nor of any other agreement
or provision herein contained. No waiver or extension of time for performance of
any obligations or acts shall be deemed a waiver or extension of the time for
performance of any other obligations or acts.

         6.10 Remedies Cumulative. In the event that the Company fails to
observe or perform any covenant or agreement to be observed or performed under
this Agreement, the Investor or any other holder of Registrable Securities may
proceed to protect and enforce its rights by suit in equity or action at law,
whether for specific performance of any term contained in this Agreement or for
an injunction against the breach of any such term or in aid of the exercise of
any power granted in this Agreement or to enforce any other legal or equitable
right, or to take any one or more of such actions, without being required to
post a bond. None of the rights, powers or remedies conferred under this
Agreement shall be mutually exclusive, and each such right, power or remedy
shall be cumulative and in addition to any other right, power or remedy, whether
conferred by this Agreement or now or hereafter available at law, in equity, by
statute or otherwise.

         6.11 Governing Law. This Agreement shall be governed by, interpreted
under, and construed in accordance with the law of the State of Delaware,
without giving effect to any choice-of-law provisions thereof that would compel
the application of the substantive laws of any other jurisdiction.

         6.12 Waiver of Trial by Jury. Each party hereby irrevocably and
unconditionally waives the right to a trial by jury in any action, suit,
counterclaim or other proceeding (whether based on contract, tort or otherwise)
arising out of, connected with or

                                       15

relating to this Agreement, the transactions contemplated hereby, or the actions
of the Investor in the negotiation, administration, performance or enforcement
hereof.

              [THE REMAINDER OF THIS PAGE IS INTENTIONALLY BLANK.]

                                       16

         IN WITNESS WHEREOF, the parties have caused this Registration Rights
Agreement to be executed and delivered by their duly authorized representatives
as of the date first written above.

                                     TREMISIS ENERGY
                                     ACQUISITION CORPORATION

                                     By:
                                         ---------------------------------------
                                     Name:  Lawrence S. Coben
                                     Title: Chairman of the Board

                                     INVESTORS:

                                     -------------------------------------------
                                                   Larry E. Lee

                                     DANISH KNIGHTS, A LIMITED PARTNERSHIP,
                                     A Texas Limited Partnership

                                     By:  Dannebrog Corporation, General Partner

                                     By:
                                         ---------------------------------------
                                             Britani Talley Bowman, President

                                     -------------------------------------------
                                                    C. David Stinson

                                   17

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