Summary of ALLIS CHALMERS ENERGY INC.

Item 8.01 Other Events
On June 2, 2009, Allis-Chalmers Energy Inc. filed with the Securities and Exchange Commission the prospectus supplement relating to its previously announced rights offering. Certain documents relating to the rights offering are filed as exhibits to this Current Report on Form 8-K. Item 9.01 Financial Statements and Exhibits
(d) Exhibits:

Exhibit No.   Description

    4.1       Form of Allis-Chalmers Energy Inc. Warrant Certificate.

    4.2       Form of Instructions as to Use of Allis-Chalmers Energy Inc. Warrant
              Certificates.

    4.3       Form of Notice to Stockholders Who Are Record Holders.

    4.4       Form of Notice to Stockholders Who Are Acting as Nominees.

    4.5       Form of Notice to Clients of Stockholders Who Are Acting as Nominees.

    4.6       Form of Beneficial Owner Election Form.

    4.7       Form of Notice of Guaranteed Delivery.

    5.1       Opinion of Andrews Kurth LLP regarding the legality of the securities
              being registered.

   23.1       Consent of UHY LLP.

   23.2       Consent of Andrews Kurth LLP (included in its opinion filed as
              Exhibit 5.1).

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