exv4w1






Exhibit 4.1







	WARRANT CERTIFICATE #: NUMBER OF WARRANTS: THE TERMS AND CONDITIONS OF THE RIGHTS OFFERING ARE SET FORTH IN
THE COMPANY’S PROSPECTUS SUPPLEMENT DATED JUNE 2, 2009 (THE “PROSPECTUS SUPPLEMENT”) AND ARE
INCORPORATED HEREIN BY REFERENCE. COPIES OF THE PROSPECTUS SUPPLEMENT ARE AVAILABLE UPON REQUEST
FROM GEORGESON, INC., THE INFORMATION AGENT. Allis-Chalmers Energy Inc. Incorporated under the
laws of the State of Delaware NON-TRANSFERABLE WARRANT CERTIFICATE Evidencing a Non-Transferable
Right to Purchase Shares of Common Stock of Allis-Chalmers Energy Inc. Subscription Price: $2.50
per Share THE WARRANT WILL EXPIRE IF NOT EXERCISED ON OR BEFORE 5:00 P.M., NEW YORK CITY TIME, ON
JUNE 19, 2009, UNLESS EXTENDED BY THE COMPANY REGISTERED OWNER: THIS CERTIFIES THAT the
registered owner whose name is inscribed hereon is the owner of the Right (the “Excess Shares”),
any Warrant holder that exercises his Basic Subscription Right in number of non-transferable
warrants (“Warrants”) set forth above. Each Warrant entitles the holder full may subscribe for a
number of Excess Shares pursuant to the terms and conditions of the Offering, thereof to subscribe
for and purchase one share of Common Stock, with a par value of $0.01 per subject to proration, as
described in the Prospectus Supplement (the “Oversubscription Right”). The share, of
Allis-Chalmers Energy Inc., a Delaware corporation, at a subscription price of $2.50 per
Warrants represented by this Warrant Certificate may be exercised by completing Form 1 and any
share (the “Basic Subscription Right”), pursuant to an offering (the “Offering”), on the
terms and other appropriate forms on the reverse side hereof and by retuning this Warrant
certificate and the subject to the conditions set forth in the Prospectus Supplement and the
“Instructions as to Use of full payment of the subscription price for each share of Common Stock in
accordance with the Allis-Chalmers Energy Inc. Warrant Certificates” accompanying this Warrant
Certificate. If any “Instructions as to Use of Allis-Chalmers Energy Inc. Warrant Certificates”
that accompany this shares of Common Stock available for purchase in the Offering are not purchased
by other Warrant Certificate. holders of Warrants pursuant to the exercise of their Basic
Subscription This Warrant Certificate is not valid unless countersigned by the subscription agent
and registered by the registrar. Witness the signatures of the duly authorized officers of
Allis-Chalmers Energy Inc. Dated: ___
___Chairman and Chief Executive Officer
General Counsel and Secretary



















 





DELIVERY OPTIONS FOR WARRANT CERTIFICATE




Delivery other than in the manner or to the addresses listed below will not constitute valid delivery.




	 	 	 
	If delivering by hand:
	 	If delivering by mail or overnight courier:
	American Stock Transfer & Trust Company
	 	American Stock Transfer & Trust Company
	Attn: Reorganization Department
	 	Operations Center
	59 Maiden Lane
	 	Attn: Reorganization Department
	New York, New York 10038
	 	6201 15th Avenue
	 
	 	Brooklyn, New York 11219






PLEASE PRINT ALL INFORMATION CLEARLY AND LEGIBLY.






FORM 1-EXERCISE OF SUBSCRIPTION RIGHTS



To subscribe for shares of Common Stock pursuant to your Basic Subscription Right, please
complete lines (a) and (c) and sign under Form 3 below. To subscribe for shares of Common
Stock pursuant to your Oversubscription Right, please also complete line (b) and sign under
Form 3 below. To the extent you subscribe for more shares than you are entitled to purchase
under either the Basic Subscription Right or the Oversubscription Right, you will be deemed
to have elected to purchase the maximum number of shares for which you are entitled to
subscribe under the Basic Subscription Right or Oversubscription Right, as applicable.



(a) EXERCISE OF BASIC SUBSCRIPTION RIGHT:




	 	 	 	 	 	 	 	 	 	 	 	 	 
	I apply for

	 	 	 	shares x $2.50	 	 	=	 	$	 	 	 
	 	 	 	 	 	 	 	 	 	 	 	 	 
	 
	 	(no. of new shares)	 	(subscription price)	 	 	 	 	 	 	(amount enclosed)





(b) EXERCISE OF OVERSUBSCRIPTION RIGHT:



If you have exercised your Basic Subscription Right in full and wish
to subscribe for additional shares pursuant to your Oversubscription Right:




	 	 	 	 	 	 	 	 	 	 	 	 	 
	I apply for

	 	 	 	shares x $2.50	 	 	=	 	$	 	 	 
	 	 	 	 	 	 	 	 	 	 	 	 	 
	 
	 	(no. of new shares)	 	(subscription price)	 	 	 	 	 	 	(amount enclosed)






	 	 	 	 	 	 	 	 	 	 	 
	(c) Total Amount of Payment Enclosed

	 	=
	 	 	$	 	 	 	 	 
	 

	 	 	 	 	 	 	 	 

	 	 





METHOD OF PAYMENT (CHECK ONE):





	o	 	Certified check or bank draft drawn on a U.S. bank, or postal, telegraphic or express
money order, payable to “American Stock Transfer & Trust Company, as Subscription
Agent.”


	 
	o	 	Wire transfer of immediately available funds directly to the account maintained by
American Stock Transfer & Trust Company, LLC, as Subscription Agent, for purposes of
accepting subscriptions in the Offering at JPMorgan Chase Bank, 55 Water Street, New
York, New York 10005, ABA #021000021, Account # 957-341334, American Stock Transfer FBO
Allis-Chalmers Energy Inc., with reference to the warrant holder’s name.










FORM 2-DELIVERY TO DIFFERENT ADDRESS



If you wish for the shares of Common Stock you purchase or a certificate representing
unexercised warrants to be delivered to an address different from that shown on the face of
this Warrant Certificate, please enter the alternate address below, sign under Form 3 and have
your signature guaranteed under Form 4.



 



 



 



FORM 3-SIGNATURE



TO SUBSCRIBE: I acknowledge that I have received the Prospectus Supplement for this Offering
and I hereby irrevocably subscribe for the number of shares of Common Stock of Allis-Chalmers
Energy Inc. indicated above on the terms and conditions specified in the Prospectus
Supplement.




	 	 	 
	Signature(s):
	 	 
	 

	 	 




IMPORTANT: The signature(s) must correspond with the name(s) as printed on the reverse of
this Warrant Certificate in every particular, without alteration or enlargement, or any other
change whatsoever.



FORM 4-SIGNATURE GUARANTEE



This form must be completed if you have completed any portion of Form 2.




	 	 	 
	Signature Guaranteed:
	 	 
	 

	 	 
	 

	 	(Name of Bank or Firm)






	 	 	 
	By:
	 	 
	 

	 	 
	 

	 	(Signature of Officer)





IMPORTANT: The signature(s) should be guaranteed by an eligible guarantor institution
(bank, stock broker, savings & loan association or credit union) with membership in an
approved signature guarantee medallion program pursuant to Securities and Exchange
Commission Rule 17Ad-15.








FOR INSTRUCTIONS ON THE USE OF ALLIS-CHALMERS ENERGY INC. WARRANT CERTIFICATES, CALL GEORGESON, INC.,
THE INFORMATION AGENT, AT (866) 577-4988.