Document:

Development Agreement

 Exhibit 10.1 
 DEVELOPMENT AGREEMENT 
 This Development Agreement (the
“Development Agreement”) by and among SandRidge Energy, Inc., a Delaware corporation, with offices at 123 Robert S. Kerr Avenue, Oklahoma City, OK 73102-6406 (“SandRidge Parent”), SandRidge Exploration and
Production, LLC, a Delaware limited liability company and wholly owned subsidiary of SandRidge Parent with offices at 123 Robert S. Kerr Avenue, Oklahoma City, OK 73102-6406 (“Assignor” and, together with SandRidge Parent,
“SandRidge”) and SandRidge Mississippian Trust I, a statutory trust formed under the laws of the State of Delaware (the “Trust”), is delivered to be effective as of 12:01 a.m., Central Time, January 1, 2011 (the
“Effective Time”). All capitalized terms not otherwise defined herein shall have the meanings ascribed to such terms in Article I below. 
 WHEREAS, Assignor and the Trust have entered into that certain Perpetual Overriding Royalty Interest Conveyance (PUD) to be effective as of the Effective Time (the “Perpetual PUD
Conveyance”); 
 WHEREAS, Assignor and Mistmada Oil Company, Inc., an Oklahoma corporation and wholly owned
subsidiary of SandRidge Parent (“SandRidge Sub”), have entered into that certain Term Overriding Royalty Interest Conveyance (PUD) to be effective as of the Effective Time (the “Term PUD Conveyance,” and together
with the Perpetual PUD Conveyance, collectively the “Conveyances”), which Term PUD Conveyance has been assigned as of the Effective Time by SandRidge Sub to the Trust; and 

WHEREAS, in connection with the Conveyances, SandRidge has agreed to undertake certain obligations with respect to the drilling
and completion of Development Wells. 
 NOW, THEREFORE, in consideration of the premises and the covenants hereinafter
contained and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intended to be legally bound hereby, it is agreed as follows: 

ARTICLE I 

DEFINITIONS 
 This Article I defines certain capitalized words, terms and phrases used in this Development Agreement. Certain other capitalized words, terms and phrases used in this Development Agreement are defined
elsewhere in this Development Agreement. 
 “Additional Interest” is defined in Section 3.01. 

“Additional Lease” is defined in Section 3.01. 

“Adjusted Development Well Amount” means the amount, for each Development Well, equal to the product of (a) the NRI
Factor for such well, multiplied by (b) the Lateral Distance Factor for such well. For example, in the case of a Development Well for which the NRI Factor is 1.5 and the Lateral Distance Factor is 1.0, the Adjusted Development Well
Amount would be equal to: NRI Factor (1.5) x Lateral Distance Factor (1.0) = 1.5. Therefore, such Development Well would have a 1.5 Adjusted Development Well Amount. The Adjusted 

 
Development Well Amount shall be rounded to the nearest ten thousandth (i.e., four decimal places to the right of the decimal point). 

“Affiliate” means, for any specified Person, another Person that controls, is controlled by, or is under common control
with, the specified Person. “Control,” in the preceding sentence, refers to the possession by one Person, directly or indirectly, of the right or power to direct or cause the direction of the management and policies of another Person,
whether through the ownership of voting securities, by contract or otherwise. 
 “AMI Area” means that area
described in Exhibit A to this Development Agreement. 
 “Assignee Minerals” means, collectively, the
“Assignee Minerals” as defined under each of the Conveyances. 
 “Assignor “ is defined in the
introductory paragraph to this Development Agreement. 
 “Assignor’s Net Revenue Interest” means the
interest, stated as a decimal fraction, in Subject Minerals production from a Development Well attributable to Subject Interests in that Development Well, net of Production Burdens. 

“Assignor’s Net Share of Minerals” means the share of Subject Minerals from each Development Well that is
attributable to Assignor’s Net Revenue Interest in that Development Well determined prior to giving effect to the Conveyances. 
 “Closing Time” means 12:01 a.m., Central Time, on April 12, 2011. 
 “Conveyances “ is defined in the recitals to this Development Agreement. 
 “Development Agreement” is defined in the introductory paragraph to this Development Agreement. 
 “Development Well” means any Mineral well located on the Subject Lands that is spud after December 31, 2010 and drilled horizontally to, and perforated for completion in, the Target
Formation, on or prior to the Drilling Obligation Completion Date. 
 “Drilling Obligation Completion Date”
means the date that the Total Drilling Target is reached; provided that the “Drilling Obligation Completion Date” shall not be deemed to have been achieved unless SandRidge Parent shall have delivered to Trustee, within a reasonable
time thereafter, (a) a certificate substantially in the form of Exhibit B to this Development Agreement, executed by its Chief Executive Officer, President or any Vice President, certifying that the Total Drilling Target was achieved as
of such date and identifying each Development Well and (b) such other documentation as Trustee may reasonably request to establish satisfaction of SandRidge’s drilling obligation hereunder. 

“Effective Time” is defined in the introductory paragraph to this Development Agreement. 

“Exchange Acreage” is defined in Section 3.02. 

“Excluded Assets” means those Minerals wells that are described in Exhibit B to each of the Conveyances.

  
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 “Farmout Agreements” means any farmout agreement, participation agreement,
exploration agreement, development agreement or any similar agreement. 
 “Gas” means natural gas and all other
gaseous hydrocarbons or minerals, including helium, but specifically excluding any Gas Liquids. 
 “Gas
Liquids” means those natural gas liquids and other similar liquid hydrocarbons, including ethane, propane, butane and natural gasoline, and mixtures thereof, that are removed from a gas stream by the liquids extraction process of any field
facility or gas processing plant and delivered by the facility or plant as natural gas liquids. 
 “Lateral Distance
Factor” means, with respect to each Development Well, the fraction (not to exceed 1.0) obtained by dividing such well’s Perforated Length by 2,500 feet. For example, if the Perforated Length of a Development Well is 2,000 feet, the
computation would be: 2,000 feet / 2,500 feet = 0.8. Therefore, such Development Well would have a Lateral Distance Factor of 0.8. In no event shall the “Lateral Distance Factor” exceed 1.0. In the event that the Perforated Length of a
Development Well is greater than 2,500 feet, the Lateral Distance Factor shall nevertheless be deemed to be equal to 1.0. 

“Minerals “ means Oil, Gas and Gas Liquids. 
 “Mortgage” is defined in Section 2.05(b). 
 “NRI
Factor” means, with respect to each Development Well, the fraction obtained by dividing Assignor’s Net Revenue Interest for such well by 56.9828%. For example, if Assignor’s Net Revenue Interest in a Development Well is 80%, the
computation would be: 80% / 56.9828% = 1.4039. Therefore, such Development Well would have a NRI Factor of 1.4039. 

“Oil” means crude oil, condensate and other liquid hydrocarbons recovered by field equipment or facilities, excluding
Gas Liquids. 
 “Party,” when capitalized, refers to SandRidge Parent, Assignor or the Trust.
“Parties,” when capitalized, refers to SandRidge Parent, Assignor and the Trust. 
 “Perforated
Length” means the length (in feet) of a Development Well measured from the first perforation along the measured depth to the last perforation along the measured depth. 

“Perpetual PUD Conveyance” is defined in the recitals to this Development Agreement. 

“Person” means any natural person, corporation, partnership, trust, estate or other entity, organization or association.

 “Production Burdens” means, with respect to any Subject Lands, Subject Interests or Subject Minerals, all
royalty interests, overriding royalty interests, production payments, net profits interests and other similar interests that constitute a burden on, are measured by or are payable out of the production of Minerals or the proceeds realized from the
sale or other disposition thereof. 
 “Reasonably Prudent Operator Standard” means the standard of conduct of a
reasonably prudent oil and gas operator in the AMI Area under the same or similar 

  
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circumstances, acting with respect to its own property and disregarding the existence of the Royalty Interests as a burden on such property. 

“Royalty Interests” means, collectively, the royalty interests created under each of the Conveyances. 

“SandRidge” is defined in the introductory paragraph to this Development Agreement. 

“SandRidge Parent” is defined in the introductory paragraph to this Development Agreement. 

“SandRidge Sub” is defined in the recitals to this Development Agreement. 

“Subject Interests” means Assignor’s undivided interests in the Subject Lands as described on Exhibit A to the
Conveyances, whether as lessee under leases, as an owner of the Subject Minerals (or the right to extract such Minerals) or otherwise, by virtue of which undivided interests Assignor has the right to conduct exploration, drilling, development and
Mineral production operations on the Subject Lands, or to cause such operations to be conducted, or to participate in such operations by paying and bearing all or any part of the costs, risks and liabilities of such operations, to drill, test,
complete, equip, operate and produce wells to exploit the Minerals. The “Subject Interests” (a) may be owned by Assignor pursuant to leases, deeds, operating, pooling or unitization agreements, orders or any other instruments,
agreements or documents, recorded or unrecorded, (b) include any and all extensions or renewals of leases covering the Subject Lands (or any portion thereof) obtained by Assignor, or any Affiliate thereof, within six (6) months after the
expiration or termination of any such lease, and (c) are subject to the Permitted Encumbrances (as defined in each of the Conveyances). For the avoidance of doubt, the “Subject Interests” do not include: (i) Assignor’s
interests in the Excluded Assets; (ii) Assignor’s rights to substances other than Minerals; (iii) Assignor’s rights to Minerals (other than Assignee Minerals) under contracts for the purchase, sale, transportation, storage,
processing or other handling or disposition of Minerals; (iv) Assignor’s interests in, or rights to Minerals (other than Assignee Minerals) held in pipelines, gathering systems, storage facilities, processing facilities or other equipment
or facilities; or (v) any additional or enlarged interests in the Development Wells, Subject Lands or Subject Minerals acquired by Assignor after the Closing Time, except (1) to the extent any such additional or enlarged interest becomes a
part of the Subject Interests by amendment to the Conveyances pursuant to Section 3.01 or Section 3.02, (2) as may result from the operation of the terms of the instruments creating the Subject Interests, or (3) as may be
reflected in extensions and renewals covered by the preceding sentence. 
 “Subject Lands” means the lands
subject to or covered by the oil and gas leases described in Exhibit A to each of the Conveyances, insofar and only insofar as they cover the Target Formation, subject to the exceptions, exclusions and reservations set forth on each such
Exhibit A. 
 “Subject Minerals” means all Minerals in and under, and that may be produced, saved and sold
from a Development Well, from and after the Effective Time, insofar and only insofar as such Minerals are produced from the Target Formation, subject to the following exclusions: Minerals that are (a) lost in the production, gathering or
marketing of Minerals; (b) used (i) in conformity with ordinary and prudent operations on the Subject Lands, including drilling and 

  
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production operations with respect to a Development Well or (ii) in connection with operations (whether on or off the Subject Lands) for processing or compressing the Subject Minerals;
(c) taken by a Third Person to recover costs, or some multiple of costs, paid or incurred by that Third Person under any operating agreement, unit agreement or other agreement in connection with nonconsent operations conducted (or participated
in) by that Third Person; and (d) retained by a Third Person for gathering, transportation, processing or marketing services related to the Subject Minerals in lieu of or in addition to cash payment for such services, to the extent such
agreement is permitted under the Conveyances. 
 “Target Formation” means (i) with respect to Alfalfa
County, Oklahoma, the “Target Formation” being defined as being the interval between the base of Pennsylvanian-aged Morrow or its stratigraphic equivalent at a depth of 4,833’ and the Devonian-aged Woodford Shale or its
stratigraphic equivalent at a depth of 5,344’ in the SandRidge Energy Dorado SWD 1-32 located in section 32, Township 29 North, Range 9 West (API No. 35003219830000), (ii) with respect to Garfield County, Oklahoma, the “Target
Formation” being defined as being the interval between the base of Pennsylvanian-aged Morrow or its stratigraphic equivalent at a depth of 6,475’ and the Devonian-aged Woodford Shale or its stratigraphic equivalent at a depth of
7,100’ in the Texas American Oil JC Nelson 1 located in section 27, Township 23 North, Range 8 West (API No. 35047223450000), (iii) with respect to Grant County, Oklahoma, the “Target Formation” being defined as
being the interval between the base of Pennsylvanian-aged Morrow or its stratigraphic equivalent at a depth of 5,395’ and the Devonian-aged Woodford Shale or its stratigraphic equivalent at a depth of 6,060’ in the SandRidge Energy Orion
1-22 SWD located in section 22, Township 25 North, Range 5 West (API No. 35053227710000), (iv) with respect to Major County, Oklahoma, the “Target Formation” being defined as being the interval between the base of
Pennsylvanian-aged Morrow or its stratigraphic equivalent at a depth of 6,474’ and the Devonian-aged Woodford Shale or its stratigraphic equivalent at a depth of 7,094’ in the Downey Oil Davis 1 located in section 24, Township 23 North,
Range 9 West (API No. 35093215620000) and (v) with respect to Woods County, Oklahoma, the “Target Formation” being defined as being the interval between the base of Pennsylvanian-aged Morrow or its stratigraphic equivalent
at a depth of 5,204’ and the Devonian-aged Woodford Shale or its stratigraphic equivalent at a depth of 5,704’ in the SandRidge Energy Koppitz SWD 1-31 located in section 31, Township 28 North, Range 13 West (API No. 35151232750000).

 “Term PUD Conveyance” is defined in the recitals to this Development Agreement. 

“Third Person” means a Person other than SandRidge or Trustee. 

“Total Drilling Target” means that number of Development Wells where the cumulative sum of all the Adjusted Development
Well Amounts for such Development Wells drilled or caused to be drilled by Assignor equals 123. 
 “Trust” is
defined in the introductory paragraph to this Development Agreement. 
 “Trust Agreement” means the Amended and
Restated Trust Agreement of the Trust, dated as of April 12, 2011 (as may be amended from time to time), among SandRidge Parent, the Trustee and Corporation Trust Company, as Delaware trustee. 

“Trustee” means The Bank of New York Mellon Trust Company, N.A., a national banking association organized under the laws
of the United States of America with its principal 

  
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place of business in New York, New York, as trustee, acting not in its individual capacity but solely as trustee of the Trust. 

ARTICLE II 

DEVELOPMENT OF THE SUBJECT LANDS 
 Section 2.01 Drilling Program. 
 (a) Obligation to Drill.
SandRidge shall, subject to the terms of Section 2.01(b) and the rest of this Article II, drill or cause to be drilled such number of Development Wells that is necessary to achieve the Total Drilling Target on or prior to December 31,
2014. 
 (b) Extension of Obligation to Drill. If SandRidge has not reached the Total Drilling Target by
December 31, 2014, SandRidge shall, subject to the terms of this Article II, drill or cause to be drilled such number of Development Wells that is necessary to achieve the Total Drilling Target on or prior to December 31, 2015.

 (c) Drilling Standard. SandRidge shall drill or caused to be drilled, at SandRidge’s sole cost and expense, each
of the Development Wells in a diligent manner in accordance with the Reasonably Prudent Operator Standard. 
 Section 2.02
Obligation to Complete and Equip. SandRidge shall, at SandRidge’s sole cost and expense, (a) attempt to complete in the Target Formation each Development Well that reasonably appears to SandRidge, acting in accordance with the
Reasonably Prudent Operator Standard, to be capable of producing Minerals in quantities sufficient to pay completion, equipping and operating costs, (b) equip for production each Development Well that is successfully completed and, when it is
equipped and connected to a gathering line, pipeline or other storage or marketing facility, shall commence production, and (c) plug and abandon all Development Wells that are unsuccessful to the extent required by applicable law. 

Section 2.03 Costs and Expenses of Development Wells. All costs and expense associated with or paid or incurred in connection
with the spudding, drilling, testing, completing and equipping for production, operating and/or plugging and abandoning of the Development Wells shall be borne solely by SandRidge, but SandRidge may use any Subject Minerals in such operations
without any duty to account to Trustee or the Trust. 
 Section 2.04 Title Due Diligence. Prior to commencing the
drilling of any Development Well, SandRidge shall perform such title due diligence and such title curative work as would be performed by an oil and gas operator drilling a well and acting in accordance with the Reasonably Prudent Operator Standard.

 Section 2.05 Wells. 
 (a) Prior to the Drilling Obligation Completion Date, SandRidge shall not, and shall cause its Affiliates not to, drill and/or complete any well to the Target Formation in the AMI Area other than
Development Wells in furtherance of its drilling obligation in Section 2.01 above. 
 (b) Assignor hereby covenants and
agrees to enter into a Mortgage (the “Mortgage”) by which Assignor will grant a mortgage lien in and to any of the undeveloped portions of the 

  
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Subject Lands (including, by amendment to the Mortgage, any Additional Lease, Additional Interest or Exchange Acreage that becomes part of the Subject Lands) located in the AMI Area in order to
secure the performance of SandRidge’s drilling obligation under Section 2.01 above. 
 (c) If SandRidge fails to
achieve the Total Drilling Target by December 31, 2015, SandRidge shall be in default of its obligations under this Development Agreement and the Trust shall be entitled to pursue, in its sole discretion, any and all remedies available pursuant
to Article III of the Mortgage. 
 (d) Notwithstanding the preceding, the maximum amount recoverable upon a failure by SandRidge
to satisfy its obligations under Section 2.01 shall be $166,050,000, and such amount shall automatically be reduced by an amount that is equal to the product of $1,350,000 multiplied by the cumulative total of all Adjusted Development Well
Amounts for all Development Wells drilled or caused to be drilled by SandRidge under this Development Agreement. In addition, upon Assignor’s request and at Assignor’s expense, the lien and security interest evidenced by the Mortgage shall
be released as to each Development Well as the same is completed (including completion as a dry hole) in accordance with this Development Agreement. 
 ARTICLE III 
 AMI AREA 

Section 3.01 Additional Leases and Additional Interests. In the event that, after the Closing Time and prior to the Drilling
Obligation Completion Date, Assignor (a) acquires additional leases covering lands lying within the AMI Area (each, an “Additional Lease”) or (b) acquires through forced pooling or otherwise by operation of law or pursuant
to any applicable contract any rights or interests that increase Assignor’s Net Revenue Interest in any Development Well, whether before or after the drilling of such well (each such increase in Assignor’s Net Revenue Interest, an
“Additional Interest”), at Assignor’s option and subject to Section 3.03, Assignor and the Trust shall execute, acknowledge and deliver (i) an instrument that amends the Conveyances so that each such Additional Lease
or Additional Interest will be subject to the Royalty Interest and be part of the Subject Interests and Subject Lands, and (ii) an instrument that amends the Mortgage so that each such Additional Lease will be subject to the Mortgage.

 Section 3.02 Exchange of Subject Lands. At Assignor’s option and subject to Section 3.03, at any time
prior to the Drilling Obligation Completion Date, Assignor may cause the Trust to execute, acknowledge and deliver to Assignor a recordable instrument (reasonably acceptable to Assignor) that releases from the Royalty Interest undeveloped portions
of the Subject Interests in connection with Assignor’s exchange of such Subject Interests for other undeveloped acreage within the AMI Area (the “Exchange Acreage”). Concurrently with such release, Assignor and the Trust shall
execute, acknowledge and deliver (a) an instrument that amends the Conveyances so that such Exchange Acreage will be subject to the Royalty Interest and be part of the Subject Interests and Subject Lands, and (b) an instrument that amends
the Mortgage so that such Exchange Acreage will be subject to the Mortgage. In no event shall Assignor extend any well into any Exchange Acreage unless and until the Conveyances are amended to include such Exchange Acreage as part of the Subject
Interests. 

  
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 Section 3.03 Limitations. In no event may (i) any Additional Lease or
Additional Interest be made subject to the Royalty Interest pursuant to Section 3.01 or (ii) any exchange involving Exchange Acreage be effected pursuant to Section 3.02, unless Assignor certifies to the Trust that: 

(a) the aggregate acreage attributable to all Additional Leases, Additional Interests and Exchange Acreage will not exceed 5% of the
Subject Interests as such exist as of the Closing Time; 
 (b) in the case of an Additional Lease only, the reserve profile of
such Additional Lease is consistent with reserve profiles of other portions of the Subject Interests that would, but for the acquisition of the Additional Lease, be tapped from a Development Well having the entire length of all of its perforated
laterals located within the Subject Interests; 
 (c) in the case of Exchange Acreage only, the reasonably projected quantity of
proved undeveloped reserves attributable to the Exchange Acreage does not significantly differ from the reasonably projected quantity of proved undeveloped reserves attributable to the portion of the Subject Interests to be given in exchange
therefor; and 
 (d) the addition of any Additional Leases, Additional interests, or Exchange Acreage, as applicable, to the
Conveyance will not cause any adverse federal income tax consequence to any Unitholder of the Trust. 
 The Trustee is hereby
authorized and directed to rely on any such certification from Assignor, and shall have no authority or responsibility to exercise any discretion in connection with any transaction authorized by this Article III. 

ARTICLE IV 

OTHER PROVISIONS 
 Section 4.01 Successors and Assigns. Subject to the limitation and restrictions on the assignment or delegation by the Parties of their rights and interests under this Development Agreement,
all of the covenants and agreements of SandRidge Parent, Assignor and the Trust contained herein shall be deemed to be covenants running with the land and shall be binding upon the successors and assigns of SandRidge Parent’s and
Assignor’s interests in the Subject Interests or this Development Agreement and SandRidge Sub’s and the Trust’s interest in the Royalty Interests and shall inure to the benefit of SandRidge Sub and the Trust and their respective
successors and permitted assigns. The foregoing notwithstanding, nothing herein is intended to modify or shall have the effect of modifying the restrictions on assignment set forth in the Conveyances regarding assignments, transfer or pooling of
SandRidge Parent’s and Assignor’s interests in the Subject Interests; and the preceding sentence shall not be deemed to permit any assignment or other transfer of the interest of SandRidge Parent or Assignor in any of the Subject Interests
that is not specifically permitted by the provisions of the Conveyances. Nothing contained in this Development Agreement or in the Conveyances shall in any way limit or restrict the right of the Trust, or the Trust’s respective successors and
assigns, to sell, convey, assign or mortgage the Royalty Interests in whole or in part. If the Trust, or the Trust’s successors and assigns, at any time shall execute a mortgage, pledge or deed of trust covering all or any part of the Royalty
Interests as security for any obligation, the mortgagee, the pledgee or 

  
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the trustee therein named or the holder of the obligation secured thereby shall be entitled, to the extent such mortgage, pledge or deed of trust so provides and upon the occurrence or existence
of the event or condition therein stated, if so conditioned, to exercise all of the rights, remedies, powers and privileges herein conferred upon the Trust, and to give or withhold all consents herein required or permitted to be obtained from the
Trust. 
 Section 4.02 Governing Law. THIS DEVELOPMENT AGREEMENT SHALL BE CONSTRUED UNDER AND GOVERNED BY THE LAWS
OF THE STATE OF OKLAHOMA WITHOUT GIVING EFFECT TO ANY CHOICE OR CONFLICT OF LAW PRINCIPLES THAT WOULD CAUSE THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION. 
 Section 4.03 Construction of Development Agreement. In construing this Development Agreement, the following principles shall be followed: 

(a) no consideration shall be given to the captions of the articles, sections, subsections or clauses, which are inserted for convenience
in locating the provisions of this Development Agreement and not as an aid in its construction; 
 (b) no consideration shall be
given to the fact or presumption that one Party had a greater or lesser hand in drafting this Development Agreement; 
 (c) the
word “includes” and its syntactical variants mean “includes, but is not limited to” and corresponding syntactical variant expressions; 
 (d) a defined term has its defined meaning throughout this Development Agreement, regardless of whether it appears before or after the place in this Development Agreement where it is defined; 

(e) unless the context clearly indicates to the contrary, references to any Party shall be construed to include all permitted successors
and assigns of such Party and references to Trustee shall be construed to include all successor and substitute trustees under the Trust Agreement; 
 (f) the plural shall be deemed to include the singular, and vice versa; and 
 (g)
each exhibit, attachment and schedule to this Development Agreement is a part of this Development Agreement, but if there is any conflict or inconsistency between the main body of this Development Agreement and any exhibit, attachment or schedule,
the provisions of the main body of this Development Agreement shall prevail. 
 Section 4.04 No Waiver. Failure of
any Party to require performance of any provision of this Development Agreement shall not affect any Party’s right to require full performance thereof at any time thereafter, and the waiver by any Party of a breach of any provision hereof shall
not constitute a waiver of a similar breach in the future or of any other breach or nullify the effectiveness of such provision. 
 Section 4.05 Relationship of Parties. This Development Agreement does not create a partnership, mining partnership, joint venture or relationship of trust or agency between the Parties.

  
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 Section 4.06 Further Assurances. Each Party shall execute, acknowledge and
deliver to the other Parties all additional instruments and other documents reasonably required to evidence or effect any transaction contemplated by this Development Agreement. 

Section 4.07 The 12:01 A.M. Convention. Except as otherwise provided in this Development Agreement, each calendar day, month,
quarter, and year shall be deemed to begin at 12:01 a.m. Central Time on the stated day or on the first day of the stated month, quarter, or year, and to end at 12:00 a.m. Central Time on the next day or on first day of the next month, quarter or
year, respectively. 
 Section 4.08 Counterpart Execution. This Development Agreement may be executed in any number
of counterparts with the same effect as if all the Parties had signed the same document. All counterparts shall be construed together and shall constitute one and the same instrument. 

Section 4.09 Notices. Any and all notices or demands permitted or required to be given under this Development Agreement shall
be in writing and shall be validly given or made if (a) personally delivered, (b) delivered and confirmed by facsimile or like instantaneous transmission service, or by Federal Express or other overnight courier delivery service, which
shall be effective as of confirmation of receipt by the courier at the address for notice hereinafter stated or (c) deposited in the United States mail, first class, postage prepaid, certified or registered, return receipt requested, addressed
as follows: 
 If to the Trust, to: 
 SandRidge Mississippian Trust I 
 c/o The Bank of New York Mellon Trust Company,
N.A. 
 Institutional Trust Services 
 919 Congress Avenue, Suite 500 
 Austin, Texas 78701 

Attention: Mike J. Ulrich 
 Facsimile No.: (512) 479-2253 
 With a copy to: 

Bracewell & Giuliani LLP 
 111 Congress Avenue 
 Suite 2300 

Austin, Texas 78701 
 Attention: Thomas W. Adkins 
 Facsimile No.: (512) 479-3940 

If to SandRidge, to: 
 123 Robert S. Kerr Avenue 
 Oklahoma City, OK 73102-6406 

Attention: Philip T. Warman 
 Facsimile No.: (405) 429-5983 

  
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 With a copy to: 
 Covington & Burling LLP 
 1201 Pennsylvania Avenue, N.W. 

Washington, D.C. 20004 
 Attention: David H. Engvall 
 Facsimile No. (202) 778 5307 

Section 4.10 Limitation of Liability. It is expressly understood and agreed by the Parties that (a) this Development
Agreement is executed and delivered by Trustee not individually or personally, but solely as Trustee in the exercise of the powers and authority conferred and vested in it and (b) under no circumstances shall Trustee be liable for the breach or
failure of any obligation, representation, warranty or covenant made or undertaken by the Trust under this Development Agreement. It is further expressly understood and agreed by the Parties that neither the Trust nor Trustee, in its capacity as
Trustee or individually, shall have any authority over, or responsibility or liability for, the drilling of the Development Wells or any of the other business or commercial activities contemplated by this Development Agreement, all of which are
hereby agreed to be the sole responsibility of SandRidge, and SandRidge hereby agrees to and hereby does indemnify and agree to hold harmless each of the Trust and Trustee, in its capacity as Trustee and individually, from and against any and all
damages, liabilities, expenses, fines, judgments, amounts paid in settlement, reasonable attorneys fees and costs of investigation, and other expenses reasonably incurred by any of them in connection with or as a result of any of the business or
commercial activities contemplated by this Development Agreement or any other matter arising out of this Development Agreement or any such matter. SandRidge further agrees to advance any such attorneys’ fees, costs of investigation and other
expenses described above as they are incurred. 
 Section 4.11 Severability. If any provision of this Development
Agreement or the application thereof to any Party or circumstance shall be held invalid or unenforceable to any extent, the remainder of this Development Agreement and the application of such provision to the other Parties or circumstances shall not
be affected thereby and shall be enforced to the greatest extent permitted by law. 
 Section 4.12 Termination. This
Development Agreement shall terminate and be deemed null and void as of and following the Drilling Obligation Completion Date. 

[Remainder of page intentionally left blank.] 

  
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 IN WITNESS WHEREOF, each Party has caused this Development Agreement to be executed in its
name and behalf and delivered on the date or dates stated in the acknowledgment certificates appended to this Development Agreement, to be effective as of the Effective Time. 

 

					
	SandRidge Energy, Inc.
		
	By:	  	 /s/ James D. Bennett

		  	   Name:      
	 	James D. Bennett
		  	   Title:         
	 	 Executive Vice President and Chief
 Financial Officer

 Signature Page to Development
Agreement 

 
					
	SandRidge Exploration and Production, LLC
		
	By:	  	 /s/ James D. Bennett

		  	   Name:      
	 	James D. Bennett
		  	   Title:         
	 	 Executive Vice President and
 Chief Financial Officer

 Signature Page to Development
Agreement 

 
					
	SandRidge Mississippian Trust I
		
	By:	 	The Bank of New York Mellon Trust Company, N.A., as Trustee
		
	By:	 	 /s/ Michael J. Ulrich

		 	   Name:      
	  	Michael J. Ulrich
		 	   Title:         
	  	Vice-President

 Signature Page to
Development Agreement 

			
	STATE OF OKLAHOMA	  	§
		  	§
	COUNTY OF OKLAHOMA	  	§

 This instrument was acknowledged
before me on April 1, 2011, by James D. Bennett as Executive Vice President and Chief Financial Officer of SandRidge Energy, Inc., a Delaware corporation, on behalf of said corporation. 

WITNESS my hand and official seal this 1st day of April, 2011. 

 

	
	 /s/ Janis L. Roberts

	 NOTARY PUBLIC,

	State of Oklahoma
	
	 Janis L. Roberts

	 (printed name)

 

			
	My commission expires:	 	  
	 May 22, 2012
	 	
	[SEAL]	 	

 Acknowledgment Page to Development Agreement 

			
	STATE OF OKLAHOMA	  	§
		  	§
	COUNTY OF OKLAHOMA	  	§

 This instrument was acknowledged
before me on April 1, 2011, by James D. Bennett as Executive Vice President and Chief Financial Officer of SandRidge Exploration and Production, LLC, a Delaware limited liability company, on behalf of said limited liability company.

 WITNESS my hand and official seal this 1st day of April, 2011. 

 

	
	 /s/ Janis L. Roberts

	 NOTARY PUBLIC,

	State of Oklahoma
	
	 Janis L. Roberts

	 (printed name)

 

			
	My commission expires:	 	  
	 May 22, 2012
	 	
	[SEAL]	 	

 Acknowledgment Page to Development Agreement 

			
	STATE OF TEXAS	  	§
		  	§
	COUNTY OF TRAVIS	  	§

 This instrument was acknowledged
before me on April 5, 2011, by Michael J. Ulrich as Vice-President of The Bank of New York Mellon Trust Company, N.A., a national banking association organized under the laws of the United States of America as Trustee of SandRidge
Mississippian Trust I, a Delaware statutory trust, on behalf of said national banking association and said trust. 
 WITNESS my hand and
official seal this 5th day of April, 2011. 
  

	
	 /s/ Sarah Newell

	 NOTARY PUBLIC,

	State of Texas
	
	 Sarah Newell

	 (printed name)

 

			
	My commission expires:	 	  
	 02-16-2014
	 	
	[SEAL]	 	

 Acknowledgment Page to Development Agreement 

 Exhibit A 
 (Description of AMI Area) 
 [See attached.] 

 Exhibit B 
 [Letterhead of SandRidge Energy, Inc.] 
 [Date] 

Reference is made to that certain Development Agreement (the “Development Agreement”), by and between SandRidge Energy,
Inc. (“SandRidge”), SandRidge Exploration and Production, LLC and SandRidge Mississippian Trust I, a Delaware statutory trust, delivered to be effective as of January 1, 2011. Capitalized terms used but not defined herein have
the meaning given them in the Development Agreement. 
 SandRidge hereby certifies to the Trust that SandRidge achieved the
Total Drilling Target on [insert date] and, therefore, such date shall be, for all purposes, established as the Drilling Obligation Completion Date. 
 The Development Wells drilled to achieve the Total Drilling Target are listed in the attachment to this letter. 
 Please sign and return an executed copy of this letter to certify that you require no additional documentation to establish SandRidge’s satisfaction of its drilling obligation under the Development
Agreement and that [insert date] shall be, for all purposes, established as the Drilling Obligation Completion Date. 
  

			
	SandRidge Energy, Inc.
		
	By:	 	  

		 	  Name:
		 	  Title:

  

									
	Acknowledged and agreed:	 	 
			
		 	 SandRidge Mississippian Trust I
	 	
				
		 	 By:
	 	 The Bank of New York Mellon Trust

Company, N.A., as Trustee
	 	
					
		 		 	 By:
	 	  
	 	
		 		 		 	  Name:	 	
		 		 		 	  Title:EXHIBIT 10(A)

 Exhibit 10(a) 
 Consent of Independent Registered Public Accounting Firm 

 Consent of Independent Registered Public Accounting Firm 

We consent to the reference to our firm under the caption “Independent Registered Public Accounting Firm” in the Statement of Additional
Information and to the use of our reports: (1) dated April 8, 2011, with respect to the statutory-basis financial statements and schedules of Transamerica Life Insurance Company, and (2) dated April 14, 2011, with respect to the
financial statements of the subaccounts of Separate Account VA X, included in Post-Effective Amendment No. 18 to the Registration Statement (Form N-4 No. 333-125817) under the Securities Act of 1933 and related Prospectus of Flexible
Premium Variable Annuity - I. 
  

	
	/s/ Ernst & Young LLP

 Des Moines, Iowa

 April 14, 2011

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