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Exhibit 10.13    
    

Supplement  

 to Collateral Agreement  

        SUPPLEMENT, dated as of February 15, 2005, made by Universal Compression Holdings, Inc., a Delaware corporation (the
"Grantor"), in favor of Wachovia Bank, National Association as administrative agent (in such capacity, the "Administrative
Agent") for the financial institutions (the "Lenders") parties to the Credit Agreement referred to below. All capitalized terms
not defined herein shall have the meaning ascribed to them in such Credit Agreement. 

W
I T N E S S E T H: 

        WHEREAS,
Universal Compression Inc., a Texas corporation ("UCI"), Universal Compression Holdings, Inc., a Delaware
corporation ("Holdings", and together with UCI, the "US Borrowers"), UC Canadian Partnership Holdings
Company (the "Canadian Borrower", and together with the US Borrowers, the "Borrowers"), the
Administrative Agent, the other Agents party thereto, and the Lenders have entered into a Senior Secured Credit Agreement, dated as of January 14, 2005 (as amended, supplemented or otherwise
modified from time to time, the "Credit Agreement"); 

        WHEREAS,
in connection with the Credit Agreement, the Grantor has entered into the Collateral Agreement, dated as of January 14, 2005 (as amended, supplemented or otherwise
modified from time to time, the "Collateral Agreement") in favor of the Administrative Agent for the benefit of the Secured Creditors; 

        WHEREAS,
the Credit Agreement requires the Grantor to pledge the capital stock described hereto on Schedule 2-S; and 

        WHEREAS,
the Grantor has agreed to execute and deliver this Supplement in order to pledge such capital stock; 

        NOW,
THEREFORE, IT IS AGREED: 

        1.    Collateral Agreement.    By executing and delivering this Supplement, the Grantor, as provided in  Section 8.11 of the
Collateral Agreement, hereby pledges and grants a security interest in (a) the capital stock and certificated
membership interests described or referred to in Schedule 2-S and (b) (i) the certificates or instruments, if any,
representing such capital stock and interests, (ii) all dividends (cash, capital stock or otherwise), cash, instruments, rights to subscribe, purchase or sell and all other rights and Property
from time to time received, receivable or otherwise distributed in respect of or in exchange for any or all of such securities and interests, (iii) all replacements, additions to and
substitutions for any of the Property referred to in this definition, including, without limitation, claims against third parties, (iv) the proceeds, interest, profits and other income of or on
any of the Property referred to in this definition, (v) all security entitlements in respect of any of the foregoing, if any, (vi) all books and records relating to any of the Property
referred to in this definition and (vii) all proceeds of any of the foregoing (collectively, the "Collateral"). Upon execution of this
Supplement, such securities will constitute "Pledged Securities" for purposes of the Collateral Agreement with the same force and effect as if originally listed on Schedule 2 thereto. The
information set forth in Schedule 2-S hereto is hereby added to the information set forth in Schedule 2 to the Collateral
Agreement. The Grantor hereby represents and warrants that each of the representations and warranties contained in Article III of the Collateral Agreement is true and correct on and as the date
hereof (after giving effect to this Supplement) as if made on and as of such date. 

        2.    Governing Law.    This Supplement shall be governed by, and construed in accordance with, the laws of the State
of Texas. 

   

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        IN WITNESS WHEREOF, the undersigned has caused this Supplement to be duly executed and delivered as of the date first above written. 

	 	 	UNIVERSAL COMPRESSION HOLDINGS, INC.
	

 	
 	

By:	

/s/  J. MICHAEL ANDERSON      

	 	 	Name:	J. Michael Anderson
	 	 	Title:	Senior Vice President and Chief Financial Officer
	

 	
 	

 	

 
	

 	
 	

 	

 
	

 	
 	

 	

 

2

 
 
 

Schedule 2-S    
    
    DESCRIPTION OF PLEDGED SECURITIES    
    

	Owner
 
	 	Issuer
	 	Percentage

Owned
	 	Percentage

Pledged
	 	Type of

Interest
	 	No. of

Shares
	 	Certificate

No.

	Universal Compression, Holdings, Inc.	 	Universal Compression, Inc.	 	100	%	100	%	capital

stock	 	4,910	 	1

3

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Exhibit 10.13

Schedule 2-S DESCRIPTION OF PLEDGED SECURITIESQuickLinks
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Exhibit 10.14    
    

Supplement  

 to Pledge Agreement  

        SUPPLEMENT, dated as of February 15, 2005, made by Universal Compression International, Inc., a Delaware corporation, and Universal Compression
Services, LLC, a Delaware limited liability company (collectively, the "Pledgor"), in favor of Wachovia Bank, National Association as administrative
agent (in such capacity, the "Administrative Agent") for the financial institutions (the "Lenders")
parties to the Credit Agreement referred to below. All capitalized terms not defined herein shall have the meaning ascribed to them in such Credit Agreement. 

W
I T N E S S E T H: 

        WHEREAS,
Universal Compression Inc., a Texas corporation ("UCI"), Universal Compression Holdings, Inc., a Delaware
corporation ("Holdings", and together with UCI, the "US Borrowers"), UC Canadian Partnership Holdings
Company (the "Canadian Borrower", and together with the US Borrowers, the "Borrowers"), the
Administrative Agent, the other Agents party thereto, and the Lenders have entered into a Senior Secured Credit Agreement, dated as of January 14, 2005 (as amended, supplemented or otherwise
modified from time to time, the "Credit Agreement"); 

        WHEREAS,
in connection with the Credit Agreement, the Pledgor has entered into the Pledge and Security Agreement, dated as of January 14, 2005 (as amended, supplemented or
otherwise modified from time to time, the "Pledge and Security Agreement") in favor of the Administrative Agent for the benefit of the Secured
Creditors; 

        WHEREAS,
the Credit Agreement requires the Pledgor to pledge the capital stock described hereto on Schedule 2-S owned
by it; and 

        WHEREAS,
the Pledgor has agreed to execute and deliver this Supplement in order to pledge such capital stock; 

        NOW,
THEREFORE, IT IS AGREED: 

        1.    Pledge and Security Agreement.    By executing and delivering this Supplement, the Pledgor, as provided in  Section 7.11
of the Pledge and Security Agreement, hereby pledges and grants a security interest in (a) the capital stock and certificated
membership interests described or referred to in Schedule 2-S and (b) (i) the certificates or instruments, if any,
representing such capital stock and interests, (ii) all dividends (cash, capital stock or otherwise), cash, instruments, rights to subscribe, purchase or sell and all other rights and Property
from time to time received, receivable or otherwise distributed in respect of or in exchange for any or all of such securities and interests (iii) all replacements, additions to and
substitutions for any of the Property referred to in this definition, including, without limitation, claims against third parties, (iv) the proceeds, interest, profits and other income of or on
any of the Property referred to in this definition, (v) all security entitlements in respect of any of the foregoing, if any, (vi) all books and records relating to any of the Property
referred to in this definition and (vii) all proceeds of any of the foregoing (collectively, the "Collateral"). Upon execution of this
Supplement, such securities will constitute "Pledged Securities" for purposes of the Pledge and Security Agreement with the same force and effect as if originally listed on Schedule 2 thereto.
The information set forth in Schedule 2-S hereto is hereby added to the information set forth in Schedule 2 to the Pledge and
Security Agreement. The Pledgor hereby represents and warrants that each of the representations and warranties contained in Article 3 of the Pledge and Security Agreement is true and correct on
and as the date hereof (after giving effect to this Supplement) as if made on and as of such date. 

        2.    Governing Law.    This Supplement shall be governed by, and construed in accordance with, the laws of the State
of Texas. 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK—

SIGNATURE PAGE FOLLOWS]  

1

 

        IN WITNESS WHEREOF, the undersigned has caused this Supplement to be duly executed and delivered as of the date first above written. 

	 	 	UNIVERSAL COMPRESSION INTERNATIONAL, INC.
	

 	
 	

By:	

/s/  J. MICHAEL ANDERSON      

	 	 	Name:	J. Michael Anderson
	 	 	Title:	Senior Vice President and Chief Financial Officer
	

 	
 	

 	

 
	

 	
 	

UNIVERSAL COMPRESSION SERVICES, LLC
	

 	
 	

By:	

/s/  J. MICHAEL ANDERSON      

	 	 	Name:	J. Michael Anderson
	 	 	Title:	Senior Vice President and Chief Financial Officer
	

 	
 	

 	

 
	

 	
 	

 	

 
	

 	
 	

 	

 

2

 
 
 

Schedule 2-S    
    
    DESCRIPTION OF PLEDGED SECURITIES    
    

	Issuer
 
	 	Owner
	 	Stock

Cert.

No.
	 	No. of

Shares

Pledged
	 	Percentage

of Issued

Stock

Pledged
	 
	PT Universal Compression Indonesia	 	Universal Compression International, Inc.	 	1	 	162	 	64.8	%
	

Universal Compression (Thailand) Limited	
 	

Universal Compression Services, LLC	
 	

36	
 	

390,000	
 	

65	
%

3

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Exhibit 10.14

Schedule 2-S DESCRIPTION OF PLEDGED SECURITIESQuickLinks
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Exhibit 10.15    
    

Supplement  

 to Pledge Agreement  

        SUPPLEMENT, dated as of February 15, 2005, made by Universal Compression Services, LLC, a Delaware limited liability company (the
"Pledgor"), in favor of Wachovia Bank, National Association as administrative agent (in such capacity, the "Administrative
Agent") for the financial institutions (the "Lenders") parties to the Credit Agreement referred to below. All capitalized terms
not defined herein shall have the meaning ascribed to them in such Credit Agreement. 

W
I T N E S S E T H: 

        WHEREAS,
Universal Compression Inc., a Texas corporation ("UCI"), Universal Compression Holdings, Inc., a Delaware
corporation ("Holdings", and together with UCI, the "US Borrowers"), UC Canadian Partnership Holdings
Company (the "Canadian Borrower", and together with the US Borrowers, the "Borrowers"), the
Administrative Agent, the other Agents party thereto, and the Lenders have entered into a Senior Secured Credit Agreement, dated as of January 14, 2005 (as amended, supplemented or otherwise
modified from time to time, the "Credit Agreement"); 

        WHEREAS,
in connection with the Credit Agreement, the Pledgor has entered into the Pledge and Security Agreement, dated as of January 14, 2005 (as amended, supplemented or
otherwise modified from time to time, the "Pledge and Security Agreement") in favor of the Administrative Agent for the benefit of the Secured
Creditors; 

        WHEREAS,
the Credit Agreement requires the Pledgor to pledge the capital stock described hereto on Schedule 2-S owned
by it; and 

        WHEREAS,
the Pledgor has agreed to execute and deliver this Supplement in order to pledge such capital stock; 

        NOW,
THEREFORE, IT IS AGREED: 

        1.    Pledge and Security Agreement.    By executing and delivering this Supplement, the Pledgor, as provided in  Section 7.11
of the Pledge and Security Agreement, hereby pledges and grants a security interest in (a) the capital stock and certificated
membership interests described or referred to in Schedule 2-S and (b) (i) the certificates or instruments, if any,
representing such capital stock and interests, (ii) all dividends (cash, capital stock or otherwise), cash, instruments, rights to subscribe, purchase or sell and all other rights and Property
from time to time received, receivable or otherwise distributed in respect of or in exchange for any or all of such securities and interests (iii) all replacements, additions to and
substitutions for any of the Property referred to in this definition, including, without limitation, claims against third parties, (iv) the proceeds, interest, profits and other income of or on
any of the Property referred to in this definition, (v) all security entitlements in respect of any of the foregoing, if any, (vi) all books and records relating to any of the Property
referred to in this definition and (vii) all proceeds of any of the foregoing (collectively, the "Collateral"). Upon execution of this
Supplement, such securities will constitute "Pledged Securities" for purposes of the Pledge and Security Agreement with the same force and effect as if originally listed on Schedule 2 thereto.
The information set forth in Schedule 2-S hereto is hereby added to the information set forth in Schedule 2 to the Pledge and
Security Agreement. The Pledgor hereby represents and warrants that each of the representations and warranties contained in Article 3 of the Pledge and Security Agreement is true and correct on
and as the date hereof (after giving effect to this Supplement) as if made on and as of such date. 

        2.    Governing Law.    This Supplement shall be governed by, and construed in accordance with, the laws of the State
of Texas. 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK—

SIGNATURE PAGE FOLLOWS]  

        IN WITNESS WHEREOF, the undersigned has caused this Supplement to be duly executed and delivered as of the date first above written. 

	 	 	UNIVERSAL COMPRESSION SERVICES, LLC
	

 	
 	

By:	

/s/  J. MICHAEL ANDERSON      

	 	 	Name:	J. Michael Anderson
	 	 	Title:	Senior Vice President and Chief Financial Officer
	

 	
 	

 	

 
	

 	
 	

 	

 
	

 	
 	

 	

 

 
 

Schedule 2-S    
    
    DESCRIPTION OF PLEDGED SECURITIES    
    

	Issuer
 
	 	Owner
	 	Stock

Cert.

No.
	 	No. of

Shares

Pledged
	 	Percentage

of Issued

Stock

Pledged
	 
	Universal Compression (Australia) Pty Ltd	 	Universal Compression Services, LLC (successor by merger to Universal Compression Services, L.P.)	 	7	 	1,894,440	 	*64.9978	%

	*
	together
with Stock Certificate No. 2 for 65 shares previously pledged equal 65% total pledged stock 

QuickLinks

Exhibit 10.15

Schedule 2-S DESCRIPTION OF PLEDGED SECURITIES

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