<PAGE>
                                                                     Exhibit 4.4

No. 1                                                      CUSIP No. 29255W AB 6
                                                           ISIN No. US29255WAB63
                                                                    $150,000,000




                    8 3/8% Senior Subordinated Note Due 2012

         Encore Acquisition Company, a Delaware corporation, promises to pay to
Cede & Co., or registered assigns, the principal sum of One Hundred Fifty
Million Dollars on June 15, 2012.

         Interest Payment Dates:    June 15 and December 15.

         Record Dates:              June 1 and December 1.

         Additional provisions of this Security are set forth on the other side
of this Security.



<PAGE>




         IN WITNESS WHEREOF, the parties hereto have caused this instrument to
be duly executed.

Dated: January 16, 2003


                                     ENCORE ACQUISITION COMPANY


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



TRUSTEE'S CERTIFICATE OF
AUTHENTICATION

WELLS FARGO BANK, N.A.,
  as Trustee, certifies
  that this is one of
  the Securities referred
  to in the Indenture.



 By:
    --------------------------
       Authorized Signatory


                                       2
<PAGE>


                    8 3/8% Senior Subordinated Note Due 2012

1.   Interest

                  Encore Acquisition Company, a Delaware corporation (such
corporation, and its successors and assigns under the Indenture hereinafter
referred to, being herein called the "Company"), promises to pay interest on the
principal amount of this Security at the rate per annum shown above. The Company
will pay interest semiannually on June 15 and December 15 of each year,
commencing June 15, 2003. Interest on the Securities will accrue from the most
recent date to which interest has been paid or, if no interest has been paid,
from December 15, 2002. Interest will be computed on the basis of a 360-day year
of twelve 30-day months.

2.   Method of Payment

                  The Company will pay interest on the Securities (except
defaulted interest) to the Persons who are registered holders of Securities at
the close of business on the June 1 or December 1 next preceding the interest
payment date even if Securities are canceled after the record date and on or
before the interest payment date. Holders must surrender Securities to a Paying
Agent to collect principal payments. The Company will pay principal and interest
in money of the United States that at the time of payment is legal tender for
payment of public and private debts. Payments in respect of the Securities
represented by a Global Security (including principal, premium and interest)
will be made by wire transfer of immediately available funds to the accounts
specified by The Depository Trust Company. The Company will make all payments in
respect of a certificated Security (including principal, premium and interest)
by mailing a check to the registered address of each Holder thereof; provided,
however, that payments on a certificated Security will be made by wire transfer
to a U.S. dollar account maintained by the payee with a bank in the United
States if such Holder elects payment by wire transfer by giving written notice
to the Trustee or the Paying Agent to such effect designating such account no
later than 30 days immediately preceding the relevant due date for payment (or
such other date as the Trustee may accept in its discretion).

3.   Paying Agent and Registrar

                  Initially, Wells Fargo Bank, National Association, a United
States banking association (the "Trustee"), will act as Paying Agent and
Registrar. The Company may appoint and change any Paying Agent, Registrar or
co-registrar without notice. The Company or any of its domestically incorporated
Wholly Owned Subsidiaries may act as Paying Agent, Registrar or co-registrar.

4.   Indenture

                  The Company issued the Securities under an Indenture dated as
of June 25, 2002 ("Indenture"), among the Company, the Subsidiary Guarantors and
the Trustee. The terms of the Securities include those stated in the Indenture
and those made part of the Indenture by reference to the Trust Indenture Act of
1939 (15 U.S.C. Sections 77aaa-77bbbb) as in effect on the date of the Indenture
(the "Act"). Terms defined in the Indenture and not defined herein have the
meanings


                                       3
<PAGE>

ascribed thereto in the Indenture. The Securities are subject to all
such terms, and Securityholders are referred to the Indenture and the Act for a
statement of those terms.

                  The Securities are general unsecured obligations of the
Company. The Company shall be entitled, subject to its compliance with Section
4.03 of the Indenture, to issue Additional Securities pursuant to Section 2.13
of the Indenture. The Initial Securities issued on the Issue Date, any
Additional Securities and all Exchange Securities or Private Exchange Securities
issued in exchange therefor will be treated as a single class for all purposes
under the Indenture. The Indenture contains covenants that limit the ability of
the Company and its subsidiaries to incur additional indebtedness; pay dividends
or distributions on, or redeem or repurchase capital stock; make investments;
issue or sell capital stock of subsidiaries; engage in transactions with
affiliates; create liens on assets; transfer or sell assets; guarantee
indebtedness; restrict dividends or other payments of subsidiaries; and
consolidate, merge or transfer all or substantially all of its assets and the
assets of its subsidiaries. During any period that the Securities have an
Investment Grade Rating from both S&P and Moody's and no Default has occurred
and is continuing, certain covenants will be suspended. These covenants are
subject to important exceptions and qualifications.

5.   Optional Redemption

                  Except as set forth below, the Company shall not be entitled
to redeem the Securities at its option prior to June 15, 2007.

                  On and after June 15, 2007, the Company shall be entitled at
its option to redeem all or a portion of the Securities upon not less than 30
nor more than 60 days' notice, at the redemption prices (expressed in
percentages of principal amount on the redemption date), plus accrued interest
to the redemption date (subject to the right of Holders of record on the
relevant record date to receive interest due on the relevant interest payment
date), if redeemed during the 12-month period commencing on June 15 of the years
set forth below:

<Table>
<Caption>
                               Redemption
Period                            Price
------                         ----------

<S>                            <C>
2007                            104.188%
2008                            102.792%
2009                            101.396%
2010 and thereafter             100.000%
</Table>

                  In addition, prior to June 15, 2005, the Company shall be
entitled at its option on one or more occasions to redeem Securities (which
includes Additional Securities, if any) in an aggregate principal amount not to
exceed 35% of the aggregate principal amount of the Securities (which includes
Additional Securities, if any) issued prior to the redemption date at a
redemption price (expressed as a percentage of principal amount) of 108.375%,
plus accrued and unpaid interest to the redemption date, with the net cash
proceeds from one or more Public Equity Offerings; provided, however, that (1)
at least 65% of such aggregate principal amount of Securities (which includes
Additional Securities, if any) remains outstanding immediately after



                                       4
<PAGE>

the occurrence of each such redemption (other than Securities held, directly or
indirectly, by the Company or its Affiliates); and (2) each such redemption
occurs within 60 days after the date of the related Public Equity Offering.

                  Prior to June 15, 2007, the Company may at its option redeem
all (but not less than all) of the Securities (which includes the Additional
Securities, if any) at a redemption price equal to the sum of:

                  (1)      the principal amount thereof, plus

                  (2)      accrued and unpaid interest, if any, to the
                           redemption date, plus

                  (3)      the Applicable Premium at the redemption date.

6.   Notice of Redemption

                  Notice of redemption will be mailed at least 30 days but not
more than 60 days before the redemption date to each Holder of Securities to be
redeemed at its registered address. Securities in denominations larger than
$1,000 principal amount may be redeemed in part but only in whole multiples of
$1,000. If money sufficient to pay the redemption price of and accrued interest
on all Securities (or portions thereof) to be redeemed on the redemption date is
deposited with the Paying Agent on or before the redemption date and certain
other conditions are satisfied, on and after such date interest ceases to accrue
on such Securities (or such portions thereof) called for redemption.

7.   Put Provisions

                  Upon a Change of Control, then unless the Company shall have
exercised its right to redeem all the Securities, any Holder of Securities will
have the right to cause the Company to repurchase all or any part of the
Securities of such Holder at a repurchase price equal to 101% of the principal
amount of the Securities to be repurchased plus accrued and unpaid interest, if
any, to the date of repurchase (subject to the right of holders of record on the
relevant record date to receive interest due on the related interest payment
date) as provided in, and subject to the terms of, the Indenture.

8.   Subordination

                  The Securities are subordinated to Senior Indebtedness of the
Company, as defined in the Indenture. To the extent provided in the Indenture,
Senior Indebtedness of the Company must be paid before the Securities may be
paid. The Company agrees, and each Securityholder by accepting a Security
agrees, to the subordination provisions contained in the Indenture and
authorizes the Trustee to give it effect and appoints the Trustee as
attorney-in-fact for such purpose.


                                       5
<PAGE>

9.   Guaranty

                  The payment by the Company of the principal of, and premium
and interest on, the Securities is fully and unconditionally guaranteed on a
joint and several senior subordinated basis by each of the Subsidiary
Guarantors.

10.  Denominations; Transfer; Exchange

                  The Securities are in registered form without coupons in
denominations of $1,000 principal amount and whole multiples of $1,000. A Holder
may transfer Securities in accordance with the Indenture. The Registrar may
require a Holder, among other things, to furnish appropriate endorsements or
transfer documents and to pay any taxes and fees required by law or permitted by
the Indenture. The Registrar need not register the transfer of any Securities
selected for redemption (except, in the case of a Security to be redeemed in
part, the portion of the Security not to be redeemed) or any Securities for a
period of 15 days before a selection of Securities to be redeemed or 15 days
before an interest payment date.

11.  Persons Deemed Owners

                  The registered Holder of this Security may be treated as the
owner of it for all purposes.

12.  Unclaimed Money

                  If money for the payment of principal or interest remains
unclaimed for two years, the Trustee or Paying Agent shall pay the money back to
the Company at its request unless an abandoned property law designates another
Person. After any such payment, Holders entitled to the money must look only to
the Company and not to the Trustee for payment.

13.  Discharge and Defeasance

                  Subject to certain conditions, the Company at any time shall
be entitled to terminate some or all of its obligations under the Securities and
the Indenture if the Company deposits with the Trustee money or U.S. Government
Obligations for the payment of principal and interest on the Securities to
redemption or maturity, as the case may be.

14.  Amendment, Waiver

                  Subject to certain exceptions set forth in the Indenture, (i)
the Indenture and the Securities may be amended with the written consent of the
Holders of at least a majority in principal amount outstanding of the Securities
and (ii) any default or noncompliance with any provision may be waived with the
written consent of the Holders of a majority in principal amount outstanding of
the Securities. Subject to certain exceptions set forth in the Indenture,
without the consent of any Securityholder, the Company, the Subsidiary
Guarantors and the Trustee shall be entitled to amend the Indenture or the
Securities to cure any ambiguity, omission, defect or inconsistency, or to
comply with Article 5 of the Indenture, or to provide for


                                       6
<PAGE>

uncertificated Securities in addition to or in place of certificated Securities,
or to add guarantees with respect to the Securities, including Subsidiary
Guaranties, or to secure the Securities, or to add additional covenants or
surrender rights and powers conferred on the Company or the Subsidiary
Guarantors, or to comply with any request of the SEC in connection with
qualifying the Indenture under the Act, or to make any change that does not
adversely affect the rights of any Securityholder.

15.  Defaults and Remedies

                  Under the Indenture, Events of Default include (i) default for
30 days in payment of interest on the Securities; (ii) default in payment of
principal on the Securities at maturity, upon redemption pursuant to paragraph 5
of the Securities, upon acceleration or otherwise, or failure by the Company to
redeem or purchase Securities when required; (iii) failure by the Company or any
Subsidiary Guarantor to comply with other agreements in the Indenture or the
Securities, in certain cases subject to notice and lapse of time; (iv) certain
accelerations (including failure to pay within any grace period after final
maturity) of other Indebtedness of the Company or any Significant Subsidiary if
the amount accelerated (or so unpaid) exceeds $10 million; (v) certain events of
bankruptcy or insolvency with respect to the Company and the Significant
Subsidiaries; (vi) certain judgments or decrees for the payment of money in
excess of $10 million; and (vii) certain defaults with respect to Subsidiary
Guaranties. If an Event of Default occurs and is continuing, the Trustee or the
Holders of at least 25% in principal amount of the Securities may declare all
the Securities to be due and payable immediately. Certain events of bankruptcy
or insolvency are Events of Default which will result in the Securities being
due and payable immediately upon the occurrence of such Events of Default.

                  Securityholders may not enforce the Indenture or the
Securities except as provided in the Indenture. The Trustee may refuse to
enforce the Indenture or the Securities unless it receives indemnity or security
satisfactory to it. Subject to certain limitations, Holders of a majority in
principal amount of the Securities may direct the Trustee in its exercise of any
trust or power. The Trustee may withhold from Securityholders notice of any
continuing Default (except a Default in payment of principal or interest) if it
determines that withholding notice is not opposed to the interest of the
Holders.

16.  Trustee Dealings with the Company

                  Subject to certain limitations imposed by the Act, the Trustee
under the Indenture, in its individual or any other capacity, may become the
owner or pledgee of Securities and may otherwise deal with and collect
obligations owed to it by the Company or its Affiliates and may otherwise deal
with the Company or its Affiliates with the same rights it would have if it were
not Trustee.

17.  No Recourse Against Others

                  A director, officer, employee or stockholder, as such, of the
Company or the Trustee shall not have any liability for any obligations of the
Company under the Securities or the Indenture or for any claim based on, in
respect of or by reason of such obligations or their

                                       7
<PAGE>

creation. By accepting a Security, each Securityholder waives and releases all
such liability. The waiver and release are part of the consideration for the
issue of the Securities.

18.  Authentication

                  This Security shall not be valid until an authorized signatory
of the Trustee (or an authenticating agent) manually signs the certificate of
authentication on the other side of this Security.

19.  Abbreviations

                  Customary abbreviations may be used in the name of a
Securityholder or an assignee, such as TEN COM (=tenants in common), TEN ENT
(=tenants by the entireties), JT TEN (=joint tenants with rights of survivorship
and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to
Minors Act).

20.  CUSIP Numbers

                  Pursuant to a recommendation promulgated by the Committee on
Uniform Security Identification Procedures the Company has caused CUSIP numbers
to be printed on the Securities and has directed the Trustee to use CUSIP
numbers in notices of redemption as a convenience to Securityholders. No
representation is made as to the accuracy of such numbers either as printed on
the Securities or as contained in any notice of redemption and reliance may be
placed only on the other identification numbers placed thereon.

21.  Holders' Compliance with Registration Rights Agreement

                  Each Holder of a Security, by acceptance hereof, acknowledges
and agrees to the provisions of the Registration Rights Agreement, including the
obligations of the Holders with respect to a registration and the
indemnification of the Company to the extent provided therein.

22.  Governing Law

                  THIS SECURITY SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK BUT WITHOUT GIVING EFFECT TO
APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF
THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

                                       8
<PAGE>

                  The Company will furnish to any Securityholder upon written
request and without charge to the Securityholder a copy of the Indenture which
has in it the text of this Security in larger type. Requests may be made to:

                  Encore Acquisition Company
                  777 Main Street, Suite 1400
                  Fort Worth, TX 76102
                  Attention: Assistant Treasurer



                                       9