June 1, 2005


Joseph P. Bartlett
Greenberg Glusker
1900 Avenue of the Stars, 21st floor
Los Angeles, CA 90067

	Re:	Allis-Chalmers Energy Inc. (Company)
		File No.:  001-02199

Dear Mr. Bartlett,

      In your letter dated May 10, 2005, which I received on May
31,
2005, you state that the Company intends to purchase from RPC,
Inc.
(RPC) certain Assets for approximately $15 million.  You state
that
the Assets were not operated as independent operating divisions or
subsidiaries of RPC, but rather were operated as an integrated
component of RPC`s rental subsidiary business.  You also state
that
RPC has not historically maintained separate financial statements
for
the Assets as an independent business unit, and the Company has
not
requested any financial information about the Assets from RPC
because
it believes such information about RPC`s revenues and cost
structure
is irrelevant to its own operations.

      You have concluded, based on the reasons enumerated in your
letter, that the acquisition of the Assets would constitute the
acquisition of assets, and not of a business as contemplated by
Article 11-01(d) of Regulation S-X.  Therefore, you conclude that
no
preacquisition financial statements of the Assets are required
pursuant to Rule 3-05 of Regulation S-X.  Based on the information
provided, the staff will not object to your conclusion.  However,
in
lieu of preacquisition financial statements of the Assets, you
should
include robust disclosure about the assets acquired pursuant to
Item
102 of Regulation S-K.  This should include information such as
the
following:

* Description of what was acquired, including information as to
why
they are not a business
* Capabilities of the Assets acquired
* Age when acquired and expected remaining life
* Any customer relationships at date of acquisition
* Number of RPC`s former employees expected to be hired by the
Company, and in what positions
* Nature of any assets not acquired that will have to be developed
or
acquired elsewhere by the Company in order to fully utilize the
Assets.

Based on the information provided, we will not object to your
proposal.

      The staff`s conclusion is based solely on the information
included in your letter.  Different or additional material
information could lead to a different conclusion.  If you have any
questions regarding this letter, please call me at (202) 551-3400.

								Sincerely,



								Leslie A. Overton
								Associate Chief Accountant

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Allis-Chalmers Energy Inc.
June 1, 2005
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