8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D. C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 7, 2005

ENCORE ACQUISITION COMPANY

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction
of incorporation) 001-16295
(Commission
File Number) 75-2759650
(IRS Employer
Identification No.)

777 Main Street, Suite 1400, Fort Worth, Texas
(Address of principal executive offices) 76102
(Zip Code)

Registrant’s telephone number, including area code: (817) 877-9955

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

	Item 7.01 Regulation FD Disclosure
	Item 9.01           Financial Statements and Exhibits
SIGNATURES
Press Release

Item 7.01 Regulation FD Disclosure

     On September 7, 2005, Encore Acquisition Company, a Delaware corporation (the “Company”), issued a press release announcing an increase in its 2005 production guidance to 15% growth over 2004. In addition, the Company announced that it will be presenting at the Lehman Brothers CEO Energy/Power Conference in New York City on September 8, 2005. A copy of the press release is attached as Exhibit 99.1 and is furnished herewith.

     The information being furnished pursuant to Item 7.01 of this Form 8-K shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be incorporated by reference into a filing under the Securities Act of 1933, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01      Financial Statements and Exhibits

(c)	Exhibits
99.1	Press Release Dated September 7, 2005

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	ENCORE ACQUISITION COMPANY
Date: September 8, 2005	By:	/s/ Robert C. Reeves
		Robert C. Reeves
		Vice President, Controller and Principal   Accounting Officer

EX-99.1

EXHIBIT 99.1

Encore Acquisition Company Increases 2005 Production Growth Guidance;
Plans to Present at Lehman Energy Conference

FORT WORTH, Texas—(BUSINESS WIRE)—September 7, 2005

Encore Acquisition Company (NYSE:EAC) announced an increase in its 2005 production guidance to 15% growth over 2004. The Company has increased its guidance as a result of positive production performance from existing properties and recently announced acquisitions that are expected to close in September and October.

The Company will be presenting at the Lehman Brothers CEO Energy/Power Conference in New York City. Jonny Brumley, Encore’s President, will present at 11:45 a.m. on September 8th at the Waldorf-Astoria Hotel. The presentation slides are available on Encore’s website at www.encoreacq.com.

Organized in 1998, Encore is a growing independent energy company engaged in the acquisition, development and exploitation of North American oil and natural gas reserves. Encore’s oil and natural gas reserves are in four core areas: the Cedar Creek Anticline of Montana and North Dakota; the Permian Basin of West Texas and Southeastern New Mexico; the Mid Continent area, which includes the Arkoma and Anadarko Basins of Oklahoma, the North Salt Basin of Louisiana and the Barnett Shale near Fort Worth, Texas; and the Rocky Mountains.

This press release includes forward-looking statements, which give our current expectations or forecasts of future events based on currently available information. Forward-looking statements in this press release relate to, among other things, expected production growth, production response from our high-pressure air injection program and expectations regarding pending acquisitions. Our expectations of future performance are subject to a wide range of business risks and uncertainties and there is no assurance that these statements and projections will be met. Please read “Factors That May Affect Future Results and Financial Condition” in our Annual Report on Form 10-K as well as the risks described in our other filings with the SEC. If one or more risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual outcomes may vary materially from those forecasted or expected. We undertake no obligation to publicly update or revise any forward-looking statements.

Contacts:

Encore Acquisition Company, Fort Worth
Roy W. Jageman, 817-339-0861
or
William J. Van Wyk, 817-339-0812