exv4w7








    Exhibit
    4.7



 



     



 




    ALLIS-CHALMERS
    ENERGY INC.



 




    Notice of
    Guaranteed Delivery

    Relating to Shares Subscribed for Pursuant to

    the Basic Subscription Right and Oversubscription
    Right



 



    As set forth in Allis-Chalmers Energy Inc.’s (the
    “Company’s”) prospectus supplement, dated
    June 2, 2009, under the heading “The
    Offering — Guaranteed Delivery Procedures,” this
    form (or one substantially equivalent hereto) may be used as a
    means of effecting the subscription and payment for shares of
    the Company’s common stock, par value $0.01 per share (the
    “Common Stock”), subscribed for pursuant to the basic
    subscription right and the oversubscription right. Such form may
    be delivered or sent by facsimile transmission, overnight
    delivery or first class mail to the American Stock
    Transfer & Trust Company (the “Subscription
    Agent”) and must be received prior to 5:00 p.m., New
    York City time, on June 19, 2009, the expiration date,
    unless extended by the Company in its sole discretion (as it may
    be extended, the “Expiration Date”).



 




    The
    Subscription Agent is:

    AMERICAN STOCK TRANSFER & TRUST COMPANY

    Attention: Allis-Chalmers Energy Inc. Rights Offering
    



 


	 	 	 
	
    By mail or overnight courier:
	
 
	
    By hand:

	
    American Stock Transfer & Trust Company
	
 
	
    American Stock Transfer & Trust Company

	
    Operations Center
	
 
	
    Attn: Reorganization Department

	
    Attn: Reorganization Department
	
 
	
    59 Maiden Lane

	
    6201 15th Avenue
	
 
	
    New York, New York 10038

	
    Brooklyn, New York 11219
	
 
	
 









 




    By
    facsimile:

    (718) 234-5001

    

    To confirm facsimile delivery:

    (718) 921-8317
    



 



    DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS, OR
    TRANSMISSION OF INSTRUCTIONS VIA A FACSIMILE NUMBER, OTHER
    THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY.



 



    The Eligible Guarantor Institution (as that term is defined in
    Rule 17Ad-15
    of the Securities Exchange Act of 1934, as amended), which may
    include (i) a commercial bank or trust company, (ii) a
    member firm of a domestic stock exchange or (iii) a savings
    bank or credit union, that completes this form must communicate
    the guarantee and the number of shares of Common Stock
    subscribed for pursuant to both the basic subscription right and
    the oversubscription right to the Subscription Agent, and the
    Subscription Agent must receive the full subscription price
    payment and this Notice of Guaranteed Delivery, guaranteeing
    delivery to the Subscription Agent of a properly completed and
    duly executed warrant certificate (“Warrant
    Certificate”), at or prior to the Expiration Date. The
    Warrant Certificate must be received by the Subscription Agent
    at or prior to 5:00 p.m., New York City time, on
    June 24, 2009 (or, if the offer is extended, at or prior to
    5:00 p.m., New York City time, on the third business day
    after the Expiration Date). Failure to timely and properly
    deliver this Notice of Guaranteed Delivery or to make the
    delivery guaranteed herein will result in a forfeiture of the
    rights.



 



    This Notice of Guaranteed Delivery shall not be used to
    guarantee signatures. If a signature on the Warrant Certificate
    is required to be guaranteed by an Eligible Guarantor
    Institution (as that term is defined in
    Rule 17Ad-15
    of the Securities Exchange Act of 1934, as amended) under the
    instructions to the Warrant Certificate, the signature guarantee
    must appear in the applicable space provided in the signature
    box on the Warrant Certificate.













 







    GUARANTEE



 



    The undersigned, an Eligible Guarantor Institution (as that term
    is defined in
    Rule 17Ad-15
    of the Securities Exchange Act of 1934, as amended) guarantees
    delivery to the Subscription Agent, at or prior to
    5:00 p.m., New York City time, on June 24, 2009 (or,
    if the offer is extended, by the close of business on the third
    business day after the Expiration Date), of a properly completed
    and duly executed Warrant Certificate.



 



    Broker Assigned Control #
    ­
    ­



 




    ALLIS-CHALMERS
    ENERGY INC.



 


	 	 	 	 	 
	
 
	
 
	
 
	
 
	
 

	

    1. Basic Subscription Right


	
 
	
 
	
 
	
 

	
 
	
 
	
 
	
 
	
 

	

    Number of Warrants exercised:


	
 
	
    

	
 
	
    Warrants

	
 
	
 
	
 
	
 
	
 

	

    Number of shares subscribed for pursuant to the basic
    subscription right for which you are guaranteeing delivery of
    the Warrant Certificate:


	
 
	
    

	
 
	
    shares

	
 
	
 
	
 
	
 
	
 

	

    Payment made in connection with basic subscription right:


	
 
	
    $ ­
    ­
	
 
	
 

	
 
	
 
	
    (shares x $2.50, the subscription price)

	
 
	
 
	
 
	
 
	
 

	

    2. Oversubscription Right


	
 
	
 
	
 
	
 

	
 
	
 
	
 
	
 
	
 

	

    Number of shares subscribed for pursuant to the oversubscription
    right (not to exceed 32% of the number of shares purchased
    pursuant to the basic subscription right) for which you are
    guaranteeing delivery of the Warrant Certificate:


	
 
	
    

	
 
	
    shares

	
 
	
 
	
 
	
 
	
 

	

    Payment made in connection with oversubscription right:


	
 
	
    $ ­
    ­
	
 
	
 

	
 
	
 
	
    (shares x $2.50, the subscription price)

	
 
	
 
	
 
	
 
	
 

	

    3. Totals


	
 
	
 
	
 
	
 

	
 
	
 
	
 
	
 
	
 

	

    Total number of shares subscribed for pursuant to the basic
    subscription right and oversubscription right for which you are
    guaranteeing delivery of the Warrant Certificate:


	
 
	
    

	
 
	
    shares

	
 
	
 
	
 
	
 
	
 

	

    Total payment made:


	
 
	
    $ ­
    ­
	
 
	
 









 



    4. Method of Delivery (Check one):



 



    o Through
    the Depository Trust Company (“DTC”)



 



    o Direct
    to American Stock Transfer & Trust Company, as
    the Subscription Agent.













 






    Please assign above a unique control number for each guarantee
    submitted. This number needs to be referenced on any direct
    delivery or any delivery through DTC.



 





    Name of Firm



 





    Authorized Signature



 





    Name (please print or type)



 





    Title



 





    DTC Participant Number



 





    Contact Name



 





    Address



 





    City, State, Zip Code



 





    Phone Number



 





    Date