Supplemental Indenture



 Exhibit 4.3 
 Execution Version 
 SUPPLEMENTAL INDENTURE 

Dated as of April 17, 2012 
 among 
 SANDRIDGE ENERGY, INC. 

the Guarantors Party Hereto 
 and 
 WELLS FARGO BANK, NATIONAL ASSOCIATION 

as Trustee 
  

 
 SENIOR FLOATING
RATE NOTES DUE 2014 
 SENIOR NOTES DUE 2018 
 SENIOR NOTES DUE 2016 
 SENIOR NOTES DUE 2020 

SENIOR NOTES DUE 2021 and 
 SENIOR NOTES DUE 2022 







 THIS SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), entered into
as of April 17, 2012, among SANDRIDGE ENERGY, INC., a Delaware corporation (the “Company”), DYNAMIC OFFSHORE RESOURCES, LLC, a Delaware limited liability company, DBH, LLC, a Delaware limited liability company, BANDON OIL AND
GAS GP, LLC, a Delaware limited liability company, BANDON OIL AND GAS, LP, a Delaware limited partnership, DYNAMIC OFFSHORE RESOURCES NS ACQUISITION, INC., a Delaware corporation, DYNAMIC OFFSHORE RESOURCES NS PARENT, INC., a Delaware corporation,
DYNAMIC OFFSHORE RESOURCES NS, LLC, a Texas limited liability company, SPN RESOURCES, LLC, a Louisiana limited liability company (each an “Undersigned”) and WELLS FARGO BANK, NATIONAL ASSOCIATION, as trustee (the
“Trustee”). 
 RECITALS 
 WHEREAS, the Company, the Guarantors party thereto and the Trustee entered into Indentures, dated as of May 1, 2008, May 20, 2008, May 14, 2009, December 16,
2009, March 15, 2011 and April 17, 2012 (each an “Indenture” and, together, the “Indentures”), relating, respectively, to the Company’s Senior Floating Rate Notes Due 2014, 8% Senior Notes Due
2018, 9.875% Senior Notes due 2016, 8.750% Senior Notes due 2020, 7.5% Senior Notes Due 2021, and 8.125% Senior Notes Due 2022 (together, the “Notes”); 
 WHEREAS, as a condition to the Trustee entering into each Indenture and the purchase of each of the Notes by the Holders, the Company agreed pursuant to each Indenture to cause any newly acquired or
created Restricted Subsidiaries (other than Foreign Subsidiaries and Immaterial Subsidiaries) to provide Guarantees. 

AGREEMENT 

NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained and intending to be legally bound, the parties to
this Supplemental Indenture hereby agree as follows: 
 Section 1. Capitalized terms used herein and not otherwise defined
herein are used as defined in each Indenture. 
 Section 2. Each Undersigned, by its execution of this Supplemental
Indenture, agrees to be a Guarantor under each Indenture and to be bound by the terms of each Indenture applicable to Guarantors, including, but not limited to, Article 11 thereof, subject to any limitations therein. 

Section 3. This Supplemental Indenture shall be governed by and construed in accordance with the laws of the State of New York.

 Section 4. This Supplemental Indenture may be signed in various counterparts which together will constitute one and the
same instrument. 
 Section 5. The recitals contained herein shall be taken as the statements of the Undersigned, and the
Trustee assumes no responsibility for their correctness. The Trustee makes no representations as to the validity or sufficiency of this Supplemental Indenture or the proper authorization or the due execution hereof or thereof by the Undersigned.








 Section 6. This Supplemental Indenture is an amendment supplemental to each Indenture
and each Indenture and this Supplemental Indenture will henceforth be read together. 
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blank] 







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

			
	SANDRIDGE ENERGY, INC., as Issuer
		
	By:	 	/s/ Matthew K. Grubb
		 	  

		 	Name: Matthew K. Grubb
		
		 	Title: President and Chief Operating Officer
	
	DYNAMIC OFFSHORE RESOURCES, LLC
		
	By:	 	/s/ Philip T. Warman
		 	  

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President
	
	DBH, LLC
		
	By:	 	/s/ Philip T. Warman
		 	  

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President
	
	BANDON OIL AND GAS GP, LLC
		
	By:	 	/s/ Philip T. Warman
		 	  

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President
	
	BANDON OIL AND GAS, LP
		
	By:	 	/s/ Philip T. Warman
		 	  

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President









 
			
	DYNAMIC OFFSHORE RESOURCES NS
ACQUISITION, INC.
		
	By:	 	 /s/ Philip T. Warman

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President


  

			
	DYNAMIC OFFSHORE RESOURCES NS
PARENT, INC.
		
	By:	 	 /s/ Philip T. Warman

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President


  

			
	DYNAMIC OFFSHORE RESOURCES NS, LLC
		
	By:	 	 /s/ Philip T. Warman

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President


  

			
	SPN RESOURCES, LLC
		
	By:	 	 /s/ Philip T. Warman

		 	Name: Philip T. Warman
		
		 	Title: Senior Vice President


  

			
	WELLS FARGO BANK, NATIONAL
ASSOCIATION, as Trustee
		
	By:	 	 /s/ John C. Stohlmann

		 	Name: John C. Stohlmann
		
		 	Title: Vice President