Document:

EX-10.11

PROMISSORY NOTE NO. 2

$175,000.00 Midland, Texas September 28, 2006

FOR VALUE RECEIVED, ESCONDE RESOURCES LP (the “Borrower”) whose principal address is 415 W.
Wall, Suite 625, Midland, Texas 79701, promises to pay to the order of BASELINE CAPITAL, INC. (the
“Lender”) at 508 West Wall, Suite 775, Midland, Midland County, Texas 79701 the sum of ONE HUNDRED
SEVENTY-FIVE THOUSAND DOLLARS ($175,000.00), together with interest from date until maturity on the
unpaid principal balance thereof from time to time outstanding at the Stated Rate and with interest
on all past due amounts, both principal and accrued interest, at the Past Due Rate, provided, that
for the full term of this Note the interest rate produced by the aggregate of all sums paid or
agreed to be paid to the holder of this Note for the use, forbearance or detention of the debt
evidenced hereby shall not exceed the Ceiling Rate.

This Note is described in and is subject to the terms and provisions of that certain Loan
Agreement (the “Agreement”) dated as of the date of this Note by and between Borrower and Lender.
This Note is subject to the terms and conditions of the Agreement. Capitalized terms used but not
defined herein shall have the meanings assigned thereto in the Agreement.

This Note is subject to the terms and conditions of that certain Subordination Agreement of
even date herewith, by and among Borrower, Lender, as subordinated creditor, and Bank, as senior
creditor.

“Stated Rate” means, on any day, a rate per annum equal to twelve percent (12.0%) per annum
provided, that if at any time the Stated Rate plus the aggregate of all other sums paid or agreed
to be paid to the Lender for the use forbearance or detention of the debt evidenced hereby shall
exceed the Ceiling Rate, then the Stated Rate shall be fixed at the Ceiling Rate

“Past Due Rate” means, on any day, a rate per annum equal to eighteen percent (18.0%). All
past due payments shall bear interest from the due date thereof until paid at the Past Due Rate.

“Ceiling Rate” means, on any day, the maximum nonusurious rate of interest permitted for that
day by whichever of applicable federal or Texas law permits the higher interest rate, stated as a
rate per annum. Without notice to the Borrower or any other person or entity, the Ceiling Rate
shall automatically fluctuate upward and downward as and in the amount by which the maximum
nonusurious rate of interest fluctuates.

Interest on the amount of each advance against this Note shall be computed on the amount of
each advance and from the date of each advance. Interest shall be computed for the actual number of
days elapsed and on the basis of a year consisting of 365 or 366 days, as the case may be.

If, for any reason whatever, the interest and any and all other amounts paid or agreed to be
paid to Lender during the full term of this Note and for any time thereafter shall produce a rate
which exceeds the Ceiling Rate, Lender shall, at the Lender’s option, credit against the principal
of this Note and any other amounts owed by Borrower to Lender such portion of said interest and/or
other payments as shall be necessary to cause the interest and/or other amounts paid on this Note
to produce a rate equal to the Ceiling Rate, or refund any excess amount to Borrower. All interest
paid or agreed to be paid to Lender shall, to the extent permitted by applicable law, be amortized,
prorated, allocated and spread throughout the full period until payment in full of all obligations
of Borrower to Lender (including the period of any renewal or extension).

The above sum and accrued interest shall be due and payable as follows:

	 	(a)	 	Interest only payments shall be due and payable in monthly installments for six
(6) months from the date of this Note, beginning on October 28, 2006 and continuing on
the 28th day of each month until and including March 28, 2007.

	 	(b)	 	Principal and interest shall be due and payable in monthly installments, each
in the amount of $1,823.00 of principal plus accrued and unpaid interest, for six (6)
months beginning April 28, 2007 and continuing on the 28th day of each month thereafter
until and including September 28, 2007.

	 	(c)	 	Principal and interest shall be due and payable in forty-one (41) monthly
installments, each in the amount of $3,906.00 of principal plus accrued and unpaid
interest, beginning October 28, 2007 and continuing on the 28th day of each month
thereafter until and including February 28, 2011.

	 	(d)	 	On March 28, 2011, the remaining balance, including principal and balance, then
remaining unpaid on this Note shall be due and payable.

The unpaid principal balance of this Note at any time shall be the total of all amounts loaned
or advanced by the holder hereof less the amount of all payments or prepayments of principal made
hereon by or for Borrower. Notwithstanding anything hereto to the contrary, the entire remaining
principal balance of this Note, plus all accrued unpaid interest, shall be due and payable in its
entirety on March 28, 2011, unless such maturity is accelerated in accordance with the Agreement
and the other Loan Documents.

Unless otherwise agreed to, in writing, or otherwise required by applicable law, payments will
be applied first to accrued, unpaid interest, then to current principal due and owing, and any
remaining amount to any unpaid collection costs, late charges and other charges and the balance to
the principal in inverse order of maturity; provided, however, upon delinquency or other default,
Lender reserves the right to apply payments among principal, interest, late charges, collection
costs and other charges at its discretion. The Borrower may at any time pay the full amount or any
part of this Note without the payment of any premium or fee except as provided in the Agreement.

In addition to all principal and accrued interest on this Note, the Borrower agrees to pay
(a) all reasonable costs and expenses actually incurred by Lender in any probate, reorganization,
bankruptcy or any other proceedings for the establishment or collection or any amount hereunder, or
in collecting this Note through any such proceedings, and (b) reasonable attorney’s fees when and
if this Note is placed in the hands of an attorney for collection after default.

The Borrower and all co-borrowers, sureties and guarantors severally waive notice (including,
but not limited to, notice of intent to accelerate and notice of acceleration), demand, presentment
for payment, protest and the filing of suit for the purpose of fixing liability and consent that
the time of payment hereof may be extended and re-extended from time to time without notice to him,
and they agree that his, her or its liability on or with respect to this Note shall not be affected
by any release of or change in any security at any time existing or by any failure to perfect or to
maintain perfection of any lien on or security interest in any such security.

Lender reserves the right, exercisable in Lender’s sole discretion and without notice to
Borrower or any other person, to sell participations, to assign its interest or both, in all or any
part of this Note or the debt evidenced by this Note.

This Note shall be construed under and governed by the laws of the State of Texas.

THIS AGREEMENT, THE NOTE, THE SECURITY DOCUMENTS, THE GUARANTY AND/OR ANY AND ALL OTHER
DOCUMENTS EXECUTED AT OR NEAR THE TIME OF EXECUTION OF THIS DOCUMENT CONSTITUTE A “LOAN AGREEMENT”
AS DEFINED IN SECTION 26.02(a) OF THE TEXAS BUSINESS & COMMERCE CODE, AND REPRESENTS THE FINAL
AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR
SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE
PARTIES.

[Remainder of Page Intentionally Left Blank]

1

DATED the 28th day of September, 2006.

ESCONDE RESOURCES LP

By: Esconde Energy LLC, its general partner

	 	 	 
	By:/s/
	 	Paul W. Heard

	 
	 	 

	 	 	Paul W. Heard, Managing Member

	By:/s/
	 	Ronnie L. Steinocher

	 
	 	 

	 	 	Ronnie L. Steinocher, Managing Member

	 	 	By: Pierce-Hamilton Energy Partners LP,

Managing Member

By: Muscoda Hill Energy LLC,

its general partner

	 	 	 
	By:/s/
	 	Lisa P. Hamilton

	 
	 	 

	 	 	Lisa P. Hamilton, President

	 	 	THE LENDER: (The Lender’s signature is provided as
its acknowledgment of the above as the final written
agreement between the parties.)

BASELINE CAPITAL, INC.

	 	 	 
	By:/s/
	 	Karl J. Reiter

	 
	 	 

	 	 	Karl J. Reiter, President

2EX-10.12

SUBORDINATION AGREEMENT

THIS SUBORDINATION AGREEMENT (this “Agreement”) is made and entered into as of September 28,
2006 by and among BaseLine Capital, Inc. (“Subordinated Lender”), Esconde Resources LP
(“Borrower”), Esconde Energy LLC (“Guarantor”) and American State Bank (“Senior Lender”), with
reference to the following facts:

A. Borrower has executed or will execute promissory notes dated of even date herewith, being
made payable to the order of each Subordinated Lender in the original principal amounts of
$325,000.00 and $175,000.00 (the “Subordinated Notes”). The Subordinated Notes evidence extensions
of credit from Subordinated Lender to Borrower pursuant to the certain Loan Agreement dated
effective of even date herewith (the “Subordinated Loan Agreement”).

B. Borrower and Senior Lender entered into a Business Loan Agreement, Promissory Notes and
security documents, all dated the same date as this Agreement (collectively, as amended, restated,
or supplemented, the “Senior Loan Documents”), pursuant to which Senior Lender will advance to
Borrower in the form one or more credit facilities in an aggregate amount of up to $650,000.00 (the
“Senior Debt”).

C. The Subordinated Loan Agreement provides that the Subordinated Lender shall be issued a
unit option exercisable for limited partner units of Borrower upon payment of the Subordinated Debt
(the “Unit Option”).

D. Guarantor is the sole general partner of Borrower and has agreed to guarantee both the
Senior Debt and the Subordinated Debt.

E. As an inducement and a condition to Senior Lender to extend the Senior Debt to Borrower,
Senior Lender has required that Subordinated Lender agrees to the terms and conditions of, and
execute and deliver this Agreement.

NOW, THEREFORE, for and in consideration of the mutual covenants and promises of this
Agreement, and for other consideration, the receipt and adequacy of which are hereby acknowledged,
Borrower, Subordinated Lender and Senior Lender agree as follows:

1. Definitions. As used in this Agreement the following terms have the following
meanings (other terms are defined above or elsewhere herein):

“Debtor Relief Laws” means Title 11 of the United States Code, as amended from time to time,
and any and all applicable laws regarding liquidation, conservatorship, bankruptcy, assignment for
the benefit of creditors, moratorium, rearrangement, receivership, suspension of payments,
insolvency, reorganization, or similar laws affecting the rights of creditors generally, as in
effect from time to time and as hereafter amended.

“Event of Default” means an “Event of Default” under and as defined in the Senior Loan
Documents.

“Person” means any individual, partnership, limited partnership, corporation, limited
liability company, business trust, joint stock company, trust, unincorporated association, joint
venture, syndicate, or other entity or organization of whatever nature.

“Senior Debt” means the principal, interest, fees, and any and all costs and expenses owed by
Borrower to Senior Lender under the Senior Loan Documents, and all extensions and renewals thereof,
as well as in any additions thereto, including, but not limited to, and future advances to be
extended by Senior Lender to Borrower up to the maximum amount of $650,000.00, plus accrued
interest and amounts owed for fees, costs and expenses.

“Subordinated Debt” means the principal of and interest on the Subordinated Notes and all
other debt of Borrower to Subordinated Lender up to the maximum amount of $500,000.00, plus accrued
interest and amounts owed for fees, costs and expenses.

“Subordinated Loan Documents” means the Subordinated Loan Agreement, Subordinated Notes and
all related agreements, documents and instruments.

“Unit Option Agreement” means the agreement between Borrower and Subordinated Lender of even
date herewith regarding the Unit Option.

2. Subordination. Until the Senior Debt is paid in full, (a) any payment in respect
of the Subordinated Debt is and shall be expressly junior and subordinated in right of payment to
all amounts due and owing upon all Senior Debt outstanding from time to time, (b) except as
expressly provided in Section 3 hereof, Subordinated Lender may not receive or accept any payment
in any form with respect to the Subordinated Debt and (c) any liens or security interests now or
hereafter securing payment of any and all Subordinated Debt are expressly subordinated to the liens
and security interests now or hereafter securing the Senior Debt, which as of the date hereof cover
all assets now owned or subsequently acquired by Borrower and Guarantor; in each case, including
all other notes and security instruments executed in connection therewith, and each amendment,
extension, refinancing, restatement or other modification thereof. Subordinated Lender may require
Borrower or Guarantor to pledge, mortgage or grant liens on their properties to Subordinated Lender
so long as Senior Lender also has a lien on or security interest in such property or has determined
in its discretion not to have such lien or security interest.

3. Payment on Subordinated Debt. If the Payment Conditions (as hereinafter defined in
this Section 3) are satisfied, Borrower may pay Subordinated Lender on the Subordinated Notes and
under the Subordinated Loan Agreement pursuant to the terms thereof (the “Permitted Payments”).
The term “Payment Conditions,” means that: (i) no Event of Default has occurred and continues
under the Senior Loan Documents, and (ii) no Event of Default would result under the Senior Loan
Documents from the making of any such Permitted Payments. If the Payment Conditions are not
satisfied with respect to any calendar month, such that the Permitted Payments attributable to such
calendar month may not be made pursuant to this Agreement, then such Permitted Payments shall
continue to be an obligation of Borrower to Subordinated Lender, expressly subject to the rights of
the Senior Lender, and subject to the terms of this Agreement. If the Payment Conditions are not
satisfied with respect to any calendar month, resulting in the Permitted Payments for that month
not being made, then at the end of any subsequent calendar month, if the Payment Conditions are
satisfied based on a cumulative calculation that includes all unpaid Permitted Payments, then the
sum of the unpaid Permitted Payments for all such previous calendar months may be paid.

4. Proceedings Against Borrower or any Guarantor. Until the Senior Debt is paid in
full, Subordinated Lender may not, without the consent of the Senior Lender (which consent will not
be unreasonably withheld),

(a) exercise any remedies (other than the acceleration of the Subordinated Debt), or
commence any action or proceeding (or join with any other creditor in commencing any action
or proceeding, including an action or proceeding under any Debtor Relief Law) to recover all
or any part of the Subordinated Debt from Borrower or Guarantor, or

(b) exercise any remedies, or commence any action or proceeding against Borrower or
Guarantor or any assets of Borrower or Guarantor to foreclose, levy or realize against any
assets of Borrower or Guarantor;

provided, that the foregoing limitations shall not apply to any right, action or remedy of the
Subordinated Lender relating to the Unit Option under the Subordinated Loan Agreement, the Unit
Option Agreement or otherwise.

5. Waiver and Subrogation. Subordinated Lender hereby waives and agrees not to assert
against Senior Lender any rights which a guarantor or surety of debt of Borrower might assert.
Notwithstanding the immediately preceding sentence, nothing in this Agreement shall cause
Subordinated Lender to be deemed or treated as a guarantor or surety. Subordinated Lender shall be
subrogated, to the extent of any amounts required to be paid over to Senior Lender pursuant to the
terms of this Agreement, to all rights of Senior Lender to receive any payments or distributions
applicable to the Senior Debt.

6. Debtor Relief Laws. In the event of any proceedings under any Debtor Relief Laws
involving Borrower or Guarantor (other than in the capacity of a creditor), Subordinated Lender
may, to the extent applicable, file any claims, proofs of claim, motions, responses, pleadings or
other instruments of similar character necessary to (a) have its claim allowed with respect to the
Subordinated Debt, (b) vote on any plan or other matter proposed, or (c) enforce the obligation of
Borrower or Guarantor with respect to the Subordinated Debt. Notwithstanding anything set forth
herein to the contrary, Subordinated Lender shall be entitled to payments and other rights and
remedies as may be provided under or in connection with any plan or other procedure approved by a
court or other authorized Person(s) under any Debtor Relief Laws.

7. Subordinated Lender’s Rights. Except as expressly limited herein, Subordinated
Lender shall have the right to enforce the obligations of Borrower and Guarantor under the
Subordinated Loan Documents.

8. No Impairment. Except as otherwise provided herein, Senior Lender may, at any time
and from time to time, without the consent of or notice to Subordinated Lender, without incurring
responsibility to Subordinated Lender, and without impairing or releasing any of Senior Lender’s
rights, or any of the obligations of Subordinated Lender under this Agreement:

(a) change the amount, manner, place, or terms of payment, or change or extend the time
of payment of or renew or alter all or any part of the Senior Debt or amend, modify,
supplement, or restate, any of the Senior Loan Documents in any manner whatsoever, except
that the amount of the Senior Debt shall not exceed $650,000.00;

(b) sell, exchange, release, or otherwise deal with all or any part of any property
pledged or mortgaged to secure all or any part of the Senior Debt;

(c) release anyone liable in any manner for the payment or collection of all or any
part of the Senior Debt;

(d) exercise or refrain from exercising any rights against the Borrower, Guarantor and
others; and

(e) apply any sums, by whomsoever paid or however realized, to the Senior Debt.

Subordinated Lender agrees that if Senior Lender agrees to any sale, exchange, release, or
transfer of all or any part of any property pledged or mortgaged to secure all or any part of the
Senior Debt, and Subordinated Lender will receive payment receive payment in full of all
obligations owed to it by Borrower and Guarantor in connection with such transaction (after payment
in full of the Senior Lender), such sale, exchange, release, or transfer shall be made free of any
liens or security interests securing the Subordinated Debt. Upon receipt of such payment in full
of all obligations owed to it by Borrower and Guarantor, Subordinated Lender further agrees to
execute any and all documents or instruments requested by Borrower, Guarantor or Senior Lender to
evidence the release of any such liens and security interests of Subordinated Lender.

9. Other Agreements. Notwithstanding anything to the contrary set forth in this
Agreement or in the Senior Loan Documents, (i) Borrower shall execute and deliver the Unit Option
Agreement to Subordinated Lender upon execution of this Agreement, (ii) Subordinated Lender may
accept and exercise any of its rights under the Unit Option Agreement, (iii) Borrower shall grant
the Unit Option to Subordinated Lender, issue the shares of common stock of Borrower (or its
successor) to Subordinated Lender upon any exercise of the Unit Option and otherwise comply with
the terms of the Unit Option Agreement, (iv) Senior Lender hereby consents to the Unit Option, the
Unit Option Agreement and the above-described actions and waives any and all breaches or defaults
such items or actions may cause under the Senior Loan Documents, (v) the debt, liens and security
interests evidenced by the Subordinated Loan Documents are hereby approved and consented to by
Senior Lender under the Senior Loan Documents, and Senior Lender waives any and all breaches or
defaults such debt, liens and security interest may cause under any of the Senior Loan Documents,
(vi) Senior Lender and Subordinated Lender shall promptly give notice to each other Lender upon the
occurrence of any Event of Default or any change, event or occurrence regarding Borrower, Guarantor
or their properties about which either becomes aware, and (vii) Senior Lender, Borrower and
Guarantor shall not enter into any agreements or other documents (including without limitation
amendments or modifications of the Senior Loan Documents) which conflict or interfere with or
reduce any right or interest of Subordinated Lender set forth in this Agreement, the Unit Option
Agreement or the Subordinated Loan Documents.

10. Attorneys’ Fees. If either Subordinated Lender or Senior Lender employs an
attorney or attorneys to enforce or defend its rights under this Agreement, such Lender shall be
entitled to recover from Borrower its court costs, reasonable attorneys’ fees, and other costs of
enforcement.

11. Amendment of Subordinated Loan Documents. The Subordinated Loan Documents may be
amended, extended, renewed, or replaced without the prior written consent of the Senior Lender so
long as the total amount of the monthly payments and fees required thereunder do not exceed such
amount thereunder as of the date hereof.

12. Counterparts. This Agreement may be executed in any number of counterparts with
the same effect as if all signatories had signed the same document. All counterparts must be
construed together to constitute one and the same instrument. This Agreement may be transmitted
and signed by facsimile and shall have the same effect as manually-signed originals and shall be
binding on all parties. In making proof of this Agreement, it shall not be necessary to produce or
account for more than one such counterpart.

13. Binding Effect. This Agreement is binding upon the parties hereto and their
respective successors and assigns.

14. Choice of Law. THIS AGREEMENT MUST BE CONSTRUED, AND ITS PERFORMANCE ENFORCED,
UNDER TEXAS LAW, WITHOUT REGARD TO THE CHOISE OF LAW RULES OF SUCH STATE.

15. Subordinated Lender’s Option. Effective on the first date (i) the Senior Lender
institutes judicial proceedings seeking payment of, or an account of, the Senior Debt or
enforcement of any rights or remedies against Borrower or any collateral securing payment of the
Senior Debt or the performance of Borrower’s obligations under the Senior Loan Documents, or (ii)
the Senior Lender initiates any foreclosure proceedings for the purpose of realizing upon any of
the collateral securing payment of the Senior Debt (any such event in clause (i) or this clause
(ii), herein an “Option Event”), the Subordinated Lender shall have the right and option (but not
the obligation) for each Option Event for a period of ten days (the “Option Exercise Period”) to
purchase all (but not less than all) of the Senior Debt and Senior Loan Documents. The Option
Exercise Period shall commence upon the Subordinated Lender’s receipt of written notice from the
Senior Lender stating that an Option Event has occurred. If the Subordinated Lender elects to
purchase the Senior Debt, the Subordinated Lender shall deliver to the Senior Lender, not later
than the expiration of the Option Exercise Period, a written notice (the “Notice”, the date of such
notice being herein referred to as the “Notice Date”) specifying (i) the Subordinated Lender’s
desire to irrevocably exercise the option and (ii) a place and date not later than ten (10) days
after the Notice Date for the closing (the “Closing Date”). On the Closing Date, the Subordinated
Lender shall pay to the Senior Lender in immediately available funds an amount equal to the Senior
Debt (the “Purchase Price”). At the closing, simultaneously with the delivery of the Purchase
Price, the Senior Lender shall assign to the Subordinated Lender all of the Senior Loan Documents
by instruments containing mutually agreeable and customary terms for such a transaction.

16. Borrower’s and Guarantor’s Acknowledgments. Borrower and Guarantor hereby
acknowledge and agree to the terms of this Agreement.

[Signatures appear on the following pages.]

EXECUTED as of the date set out in the Preamble.

SENIOR LENDER:

AMERICAN STATE BANK

By:/s/

Name:

Title:

SUBORDINATED LENDER:

BASELINE CAPITAL, INC.

	 	 	 
	By:/s/
	 	Karl J. Reiter

	 
	 	 

	 	 	Karl J. Reiter, President

	 	 	BORROWER:

ESCONDE RESOURCES LP

By: Esconde Energy LLC, its general partner

	 	 	 
	By:/s/
	 	Paul W. Heard

	 
	 	 

	 	 	Paul W. Heard, Managing Member

	By:/s/
	 	Ronnie L. Steinocher

	 
	 	 

	 	 	Ronnie L. Steinocher, Managing Member

	 	 	By: Pierce-Hamilton Energy Partners LP,

Managing Member

By: Muscoda Hill Energy LLC,

its general partner

	 	 	 
	By:/s/
	 	Lisa P. Hamilton

	 
	 	 

	 	 	Lisa P. Hamilton, President

[Signatures Continued on Following Page]

1

GUARANTOR:

ESCONDE ENERGY LLC

	 	 	 
	By:/s/
	 	Paul W. Heard

	 
	 	 

	 	 	Paul W. Heard, Managing Member

	By:/s/
	 	Ronnie L. Steinocher

	 
	 	 

	 	 	Ronnie L. Steinocher, Managing Member

	 	 	By: Pierce-Hamilton Energy Partners LP,

Managing Member

By: Muscoda Hill Energy LLC,

its general partner

	 	 	 
	By:/s/
	 	Lisa P. Hamilton

	 
	 	 

	 	 	Lisa P. Hamilton, President

2

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