AMENDMENT NO. 4 dated as of December 22, 2011 to the AMENDED AND RESTATED CREDIT AGREEMENT dated as of April 22, 2010 among SANDRIDGE ENERGY, INC. as the Borrower, BANK OF AMERICA, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer and The Other Lenders Party Thereto AMENDMENT NO. 4

Exhibit 10.7.5

EXECUTION COPY

AMENDMENT NO. 4

dated as of December 22, 2011

to the

AMENDED AND RESTATED

CREDIT AGREEMENT

dated as of April 22, 2010

among

SANDRIDGE ENERGY, INC.

as the Borrower,

BANK OF AMERICA, N.A.,

as Administrative Agent, Swing Line Lender and L/C Issuer

and

The Other Lenders Party Thereto

AMENDMENT NO. 4

AMENDMENT NO. 4 (this “Amendment”) dated as of December 22, 2011 under the Amended and Restated Credit Agreement dated as of April 22, 2010 (as amended, restated, supplemented, or otherwise modified from time to time, the “Credit Agreement”) among SANDRIDGE ENERGY, INC., a Delaware corporation (the “Borrower”), each LENDER from time to time party thereto and BANK OF AMERICA, N.A., as Administrative Agent (the “Administrative Agent”), Swing Line Lender and L/C Issuer.

WHEREAS, the parties hereto desire to amend the Credit Agreement as set forth herein;

NOW, THEREFORE, the parties hereto agree as follows:

SECTION 1. Defined Terms. Unless otherwise specifically defined herein, each term used herein that is defined in the Credit Agreement has the meaning assigned to such term in the Credit Agreement. Each reference to “hereof”, “hereunder”, “herein” and “hereby” and each other similar reference and each reference to “this Agreement” and each other similar reference contained in the Credit Agreement shall, after this Amendment becomes effective, refer to the Credit Agreement as amended hereby.

SECTION 2. Amendments to the Credit Agreement. Section 7.11(a) of the Credit Agreement is hereby amended by changing the date of “March 31, 2012” referred to therein to “March 31, 2013”.

SECTION 3. Representations of the Borrower. The Borrower represents and warrants that, both before and immediately after giving effect to this Amendment pursuant to Section 6 hereof, (i) the representations and warranties set forth in Article 5 of the Credit Agreement will be true and correct in all material respects and (ii) no Default or Event of Default will have occurred and be continuing.

SECTION 4. Governing Law. This Amendment shall be governed by and construed in accordance with the laws of the State of New York.

SECTION 5. Counterparts. This Amendment may be signed in any number of counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. Delivery of an executed counterpart of a signature page of this Amendment by telecopy shall be effective as delivery of a manually executed counterpart of this Agreement.

SECTION 6. Effectiveness. This Amendment shall become effective on and as of the date hereof provided that:

(a) the Administrative Agent shall have received counterparts hereof signed by each of the Borrower and the Required Lenders; and

(b) the Administrative Agent shall have received, with respect to each Lender that shall have delivered a signed counterpart hereof to the Administrative Agent as set forth in clause (a) above at or prior to 5:00 p.m., New York City time, on December 21, 2011, an amendment fee payable by the Borrower for the account of each such Lender in an amount equal to 0.075% of such Lender’s Applicable Percentage of the Borrowing Base in effect on such date.

[Signature Pages Follow]

2

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