Item 9.01 Financial Statements and Exhibits.

(a) Financial Statements of Businesses Acquired.

Audited Combined Statement of Revenues and Direct Operating Expenses for the year ended December 31, 2007, which is included in Exhibit 99.1 hereof and is incorporated herein by reference.

Unaudited Combined Statements of Revenues and Direct Operating Expenses for the six months ended June 30, 2008 and 2007, which are included in Exhibit 99.2 hereof and are incorporated herein by reference.

(b) Pro Forma Financial Information.

Unaudited Pro Forma Condensed Consolidated Financial Statements for the six months ended June 30, 2008, which are included in Exhibit 99.3 hereof and are incorporated herein by reference.

Unaudited Pro Forma Condensed Consolidated Statement of Operations for the year ended December 31, 2007, which is included in Exhibit 99.4 hereof and is incorporated herein by reference.

(c) Shell Company Transactions.

Not applicable.

(d) Exhibits.

2.1 Purchase and Sale Agreement between EV Properties, L.P. and EnerVest Energy Institutional Fund IX, L.P. and EnerVest Energy Institutional Fund IX-WI, L.P. dated August 11, 2008

23.1 Consent of Deloitte & Touche LLP

99.1 Audited Combined Statement of Revenues and Direct Operating Expenses for the year ended December 31, 2007

99.2 Unaudited Combined Statements of Revenues and Direct Operating Expenses for the six months ended June 30, 2008 and 2007

99.3 Unaudited Pro Forma Condensed Consolidated Financial Statements for the six months ended June 30, 2008

99.4 Unaudited Pro Forma Condensed Consolidated Statement of Operations for the year ended December 31, 2007

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