Document:

Supplemental Indenture, dated as of May 7, 2012

 Exhibit 4.3 
 SUPPLEMENTAL INDENTURE 
 This Supplemental Indenture is entered into as of
May 7, 2012 (this “Supplemental Indenture”), by and among CES Mid-Continent Hamm, LLC, a Delaware limited liability company, CES Rockies, Inc., a Delaware corporation, Complete Energy, LLC, a Delaware limited liability company,
Stride Well Service Company, Inc., a Delaware corporation, and Turner Energy Services, LLC, a Delaware limited liability company (the “New Guarantors”), all of which are subsidiaries of SESI, L.L.C., a Delaware limited liability
company (the “Issuer”), Superior Energy Services, Inc., a Delaware corporation (“Superior Energy”), the guarantors named therein (the “Existing Guarantors”) and The Bank of New York Mellon Trust
Company, N.A., a national banking association (the “Trustee”), as Trustee, registrar, authentication agent and paying agent under the Indenture referred to below. 

W I T N E S S E T H: 
 WHEREAS, Superior Energy, Issuer, the Existing Guarantors and the Trustee have heretofore executed and delivered an Indenture dated as of December 6, 2011 (as supplemented, waived or otherwise
modified, the “Indenture”), providing for the issuance of an aggregate principal amount of $800.0 million of 7.125% Senior Notes due 2021 of the Issuer (the “Notes”); 

WHEREAS, the Indenture provides that under certain circumstances the New Guarantors shall execute and deliver to the Trustee a
supplemental indenture pursuant to which the New Guarantors shall unconditionally guarantee all of the Issuer’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein and under the Indenture (the
“Note Guarantee”); and 
 WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to
execute and deliver this Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and
valuable consideration, the receipt of which is hereby acknowledged, the parties mutually covenant and agree for the equal and ratable benefit of the Holders as follows: 
 ARTICLE I 
 DEFINITIONS 

1. Defined Terms. As used in this Supplemental Indenture, terms defined in the Indenture or in the preamble or recital hereto are
used herein as therein defined. The words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular
section hereof. 

  
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 ARTICLE II 
 REPRESENTATIONS; AGREEMENT TO BE BOUND; GUARANTEE 
 1.
Representations. Each New Guarantor represents and warrants to the Trustee as follows: 
 (a) It is duly organized,
validly existing and in good standing under the laws of its jurisdiction of organization. 
 (b) The execution, delivery and
performance by it of this Supplemental Indenture have been authorized and approved by all necessary corporate or limited liability company action on its part. 
 2. Agreement to be Bound. Each New Guarantor hereby becomes a party to the Indenture as a Guarantor and as such shall have all of the rights and be subject to all of the obligations and agreements
of a Guarantor under the Indenture. Each New Guarantor agrees to be bound by all of the provisions of the Indenture applicable to a Guarantor and to perform all of the obligations and agreements of a Guarantor under the Indenture. 

3. Guarantee. Each New Guarantor agrees, on a joint and several basis with all the existing Guarantors, to fully, unconditionally
and irrevocably Guarantee to each Holder of the Notes and the Trustee the Obligations pursuant to Article 10 of the Indenture on a senior unsecured basis. 
 ARTICLE III 
 MISCELLANEOUS 

1. Notices. All notices and other communications to the New Guarantors shall be given as provided in the Indenture to the New
Guarantors, at their address set forth below, with a copy to the Issuer as provided in the Indenture for notices to the Issuer. 

2. Parties. Nothing expressed or mentioned herein is intended or shall be construed to give any Person, firm or corporation, other
than the Holders and the Trustee, any legal or equitable right, remedy or claim under or in respect of this Supplemental Indenture or the Indenture or any provision herein or therein contained. 

3. Governing Law. This Supplemental Indenture shall be governed by, and construed in accordance with, the laws of the State of New
York. 
 4. Severability Clause. In case any provision in this Supplemental Indenture shall be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability.

 5. Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the
Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder
heretofore or 

  
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hereafter authenticated and delivered shall be bound hereby. The Trustee makes no representation or warranty as to the validity or sufficiency of this Supplemental Indenture or with respect to
the recitals contained herein, all of which recitals are made solely by the other parties hereto. 
 6. Counterparts. The
parties hereto may sign one or more copies of this Supplemental Indenture in counterparts, all of which together shall constitute one and the same agreement. 
 7. Headings. The headings of the Articles and the sections in this Supplemental Indenture are for convenience of reference only and shall not be deemed to alter or affect the meaning or
interpretation of any provisions hereof. 
 [Signature pages follow.] 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed as of the date first above written. 
  

			
	CES MID-CONTINENT HAMM, LLC
	CES ROCKIES, INC.
	COMPLETE ENERGY, LLC
	STRIDE WELL SERVICE COMPANY, INC.
	TURNER ENERGY SERVICES, LLC
		
	By:	 	 /s/ William B. Masters

		 	Name: William B. Masters
		 	Title: Authorized Representative
		
		 	 Address: 601 Poydras Street, Suite 2400
 New Orleans, Louisiana 70130

	
	SESI, L.L.C.
	By:	 	Superior Energy Services, Inc.,
		 	its managing member
		
	By:	 	 /s/ William B. Masters

		 	Name: William B. Masters
		 	 Title: Executive Vice President
           and General Counsel

	
	SUPERIOR ENERGY SERVICES, INC.
		
	By:	 	 /s/ William B. Masters

		 	Name: William B. Masters
		 	Title: Executive Vice President
		 	         and General Counsel

 
			
	1105 PETERS ROAD, L.L.C.
	ADVANCED OILWELL SERVICES, INC.
	A&W WATER SERVICE, INC.
	AWS, INC.
	BLOWOUT TOOLS, INC.
	CONCENTRIC PIPE AND TOOL RENTALS, L.L.C.
	CONNECTION TECHNOLOGY, L.L.C.
	CSI TECHNOLOGIES, LLC
	DRILLING LOGISTICS, L.L.C.
	FASTORQ, L.L.C.
	HAMM & PHILLIPS SERVICE COMPANY, INC.
	H.B. RENTALS, L.C.
	INTEGRATED PRODUCTION SERVICES, INC.
	INTERNATIONAL SNUBBING SERVICES, L.L.C.
	LEED TOOL CORPORATION
	MONUMENT WELL SERVICE CO.
	NON-MAGNETIC RENTAL TOOLS, L.L.C.
	PRODUCTION MANAGEMENT INDUSTRIES, L.L.C.
	PUMPCO ENERGY SERVICES, INC.
	RISING STAR SERVICES, L.P.
	SEMO, L.L.C.
	SEMSE, L.L.C.
	SPN FAIRWAY ACQUISITION, INC.
	STABIL DRILL SPECIALTIES, L.L.C.
	SUB-SURFACE TOOLS, L.L.C.
	SUPERIOR HOLDING, INC.
	SUPERIOR ENERGY SERVICES, L.L.C.
	SUPERIOR ENERGY SERVICES COLOMBIA, L.L.C.
	SUPERIOR INSPECTION SERVICES, L.L.C.
	TEXAS CES, INC
	WARRIOR ENERGY SERVICES CORPORATION
	WILD WELL CONTROL, INC.
	WORKSTRINGS INTERNATIONAL, L.L.C.
		
	By:	 	 /s/ William B. Masters

		 	Name: William B. Masters
		 	Title:Authorized Representative

 
			
	 THE BANK OF NEW YORK MELLON
TRUST COMPANY, N.A., as Trustee

		
	By:	 	 /s/ Craig Kaye

		 	Name: Craig Kaye
		 	Title: Vice PresidentEquity Transfer Agreement

 Exhibit 4.1 
 Harbin Yew Science and Technology Development Co., Ltd. 
 Equity Transfer
Agreement 
 This Agreement is executed by and between the following parties as of February 23, 2010 in Harbin. 

Transferor: Zhiguo WANG (hereinafter referred to as “Party A”) 
 Address: No. 234, Gexin Street, Nangang District, Harbin 
 Transferee: Heilongjiang
Jinshangjing Bio-Technology Development Co., Limited 

                     (hereinafter referred to as
“Party B”) 
 Address: 5F, Section B, #18, Hengshan Street, Xiangfang District, Harbin 

The registered capital of Harbin Yew Science and Technology Development Co., Ltd (hereinafter referred to as the “Target
Company”) is RMB 45,000,000, among which, Party A’s capital contribution is RMB 28,260,000 and accounts for 62.8% of the total share capital. In accordance with relevant laws and regulations, the Parties reach the following agreement
through negotiation in good faith: 
 Article 1 Subject of Equity Transfer 

1.1 Party A shall transfer 62.8% of the equity interest of the Target Company held by it to Party B. 

1.2 All other rights attached to the equity interest shall be transferred along the transfer of the equity interest. 

Article 2 Representations and Warranties 
 2.1 Party A’s Representations and Warranties 
 2.1.1 Other shareholders have
explicitly given up their rights of first refusal. 
 2.1.2 Before the execution of this Agreement, Party A did not execute any
contract, agreement or other documents which contain any clause prohibiting or restricting the transfer of the target equity interest. 
 2.1.3 As of the execution of this Agreement, Party A has full, valid and sufficient ownership and right of disposal with respect to the equity interest transferred to Party B under Article 1. 

2.1.4 Party A represents to assume all economic and legal responsibilities arising from its breach of the above representations and
warranties and compensate Party B against all losses may occur. 

  
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 2.2 Party B’s Representations and Warranties 

2.2.1 Party B is a legal entity organized and existing under the laws of the PRC. 

2.2.2 Party B represents to assume all economic and legal responsibilities arising from its breach of the above representations and
warranties and compensate Party A against all losses may occur. 
 Article 3 Liability for Breach 

3.1 In the event either Party breaches its obligations under this Agreement and causes this Agreement could not be performed or could not
be fully performed, the defaulting Party shall be liable for such breach (including liabilities for damages). 
 3.2 In the
event any breach stipulated under this Agreement occurs, including breach of obligations, representations and warranties, the non-defaulting Party shall have the right to terminate this Agreement and shall have the right to require the other Party
to assume liabilities for breach. 
 3.3 Neither party to this Agreement shall be liable for failure to perform this Agreement
if the failure is attributable to force majeure. 
 Article 4 Resolution of Dispute 

4.1 The execution, effectiveness, construction, performance and the resolution of disputes hereunder shall be governed by the laws of
PRC. 
 4.2 In the event that any dispute arises with respect to the content and performance of this Agreement and the Parties
cannot settle such dispute through negotiations, either Party shall have the right to submit the relevant dispute to the people’s court at the place where this Agreement is performed. Unless otherwise provided by the court, the costs of
lawsuits and other lawsuits related expenses shall be assumed by the party loosing the lawsuits. 
 Article 5 Alternation and
Amendment 
 5.1 Any alteration and amendments to this Agreement shall be made by the Parties through negotiation and shall be
in writing. 
 5.2 Alteration and amendments to this Agreement are an integral part of this Agreement. 

Article 6 Effectiveness and Copies 
 6.1 This Agreement shall become effective as of the date of being executed by the Parties. 

  
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 6.2 This Agreement shall be executed in four original copies, each Party having one copy and
the rest shall be used for completing relevant procedures. 
  

					
			
	Party A: (Sign)	  	Party B (Seal)	  	
			
	/s/ Zhiguo Wang	  	Legal Representative to Sign:	  	/s/ Guifang Qi
			
		  	February 23, 2010	  	

  
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