Document:

Exhibit
10.6

 

Omnibus
Agreement Extension

 

This Omnibus Agreement Extension (“Agreement”)
is entered into on February 25, 2013, and is by and between EnerVest, Ltd., (f/k/a EnerVest Management Partners, Ltd.) a Texas
limited partnership (“EnerVest”) and EV Energy GP, LP, a Delaware limited partnership (the “General Partner”).

 

WHEREAS, the Omnibus Agreement (the “First
Omnibus Agreement”), was entered into on September 29, 2006, by and among EnerVest, EV Management LLC, a Delaware limited
liability company (“EV Management”), the General Partner, EV Energy Partners, LP, a Delaware limited partnership (the
“Partnership”), and EV Properties, L.P., a Delaware limited partnership (“OLP”). Any capitalized term not
defined herein shall have the meaning set forth therein;

 

WHEREAS, pursuant to Section 3.3 of the
First Omnibus Agreement, EnerVest and the General Partner determine the amount of general and administrative expenses that will
be properly allocated to the Partnership after December 31, 2008;

 

WHEREAS, the First Omnibus Agreement automatically
renews each year if it is not terminated by either EnerVest or the General Partner;

 

WHEREAS, the First Omnibus Agreement was
extended by the Omnibus Agreement Extensions entered into on December 17, 2008, December 10, 2009, December 21, 2010 and December
20, 2011;

 

WHEREAS, neither party has terminated the
First Omnibus Agreement.

 

In consideration of the premises and the
covenants, conditions, and agreements contained herein, and for other good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, EnerVest and the General Partner hereby agree as follows:

 

1.          The
First Omnibus Agreement shall continue in effect until December 31, 2013, subject to termination or automatic renewal on such date
as provided in the First Omnibus Agreement.

 

2.          The
Partnership shall pay EnerVest a fee of $833,333.33 per month, $10 million annually, for the services described in the First Omnibus
Agreement, subject to adjustment as provided in Section 3.3 therein.

 

    	 

    	 

    

 

IN WITNESS WHEREOF, the undersigned have
executed this Agreement on, and effective as of, the date first set forth above.

 

	 	ENERVEST, LTD.
	 	 	 
	 	By:	EnerVest Management GP, L.C.,
	 	 	its general partner
	 	 	 
	 	By: 	/s/ Mark A. Houser
	 	 	Mark A. Houser
	 	 	Executive Vice President and
	 	 	Chief Operating Officer
	 	 	 
	 	EV ENERGY GP, L.P.
	 	 	 
	 	By:	EV Management, L.L.C.,
	 	 	a Delaware limited liability company
	 	 	its General Partner
	 	 	 
	 	By:	/s/ Michael E. Mercer
	 	 	Michael E. Mercer
	 	 	Senior Vice President and Chief Financial OfficerExhibit 10.17

 

Amended
and Restated Assignment Agreement

 

THIS AMENDED AND RESTATED
ASSIGNMENT AGREEMENT (“Assignment”), dated as of October 1, 2012, is made and entered into by and among
M3 Ohio Gathering LLC, a Delaware limited liability company (“M3 Assignor”), Utica Gas Services, L.L.C.,
an Oklahoma limited liability company (“UGS Assignor”) on one hand (together the “Assignors”)
and CGAS Properties, L.P., a Delaware limited partnership (“CGAS Assignee”) and Utica East Ohio Midstream
L.L.C., a Delaware limited liability company (“Company Assignee”), on the other hand (together, the “Assignees”),
and for purposes of Section 4 below only, Evervest Energy Institutional Fund IX, L.P., Evervest Energy Institutional Fund IX-WI,
L.P., Evervest Energy Institutional Fund XI-A, L.P., Evervest Energy Institutional Fund XI-WI, L.P. and Belden and Blake Corporation
(collectively, the “EV Consent Parties”). Assignors and Assignees may be referred to individually as
a “Party” or collectively as the “Parties.”

 

RECITALS

 

WHEREAS, the Assignors
and CGAS Assignee are parties (“Members”) to that certain LLC Agreement of Utica East Ohio Midstream
LLC dated as of March 9, 2012 (“LLC Agreement”);

 

WHEREAS, the Assignors
desire to convey to CGAS Assignee and CGAS Assignee desires to assume from Assignors, the Membership Interests owned by M3 Assignor
representing a 3.3% Sharing Ratio (as that term is defined in the LLC Agreement of the Company) in the Company and the Membership
Interests owned by UGS Assignor representing a 9.7% Sharing Ratio in the Company (“Assigned Membership Interests”);

 

WHEREAS, the M3 Assignor
is party to a gas gathering, processing, fractionation, and storage agreement with certain Affiliates of the CGAS Assignee (“Gas
Contract”), and it desires to assign all of the Gas Contract (which includes all rights, titles, and interests in
the Gas Contract and all equipment, facilities and contracts ancillary thereto) to the Company Assignee and Company Assignee desires
to assume the same from the M3 Assignor;

 

WHEREAS, the M3 Assignor
is party to a gas gathering services agreement with The East Ohio Gas Company d/b/a Dominion East Ohio, dated effective as of October
1, 2012 (“Gathering Contract”), and it desires to assign all of the Gathering Contract (which includes
all rights, titles, and interests in the Gathering Contract and all equipment, facilities and contracts ancillary thereto) to the
Company Assignee and Company Assignee desires to assume the same from the M3 Assignor;

 

WHEREAS, the Parties
previously entered into an assignment agreement to govern the assignment of the Gas Contract and the Assigned Membership Interests
as of October 1, 2012 (the “Prior Assignment”);

 

WHEREAS, the Parties
desire that the Prior Agreement be amended and restated in its entirety and replaced by the terms of this Assignment; and

 

    	 

    	 

    

 

WHEREAS, each of, the
EV Consent Parties has executed this assignment below to evidence its consent to the assignment of the Gas Contract, pursuant to
Section 13.1 of the General Terms and Conditions thereof.

 

AGREEMENT

 

NOW, THEREFORE, for
good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties agree as follows:

 

1.   Definitions.
Capitalized terms used in this Assignment Agreement and not otherwise defined in the text of this Assignment shall have the meanings
attributed to them in the LLC Agreement.

 

2.   Condition
Precedent. Each of the assignment of the Assigned Membership Interests, the assignment the Gas Contract and the assignment
of the Gathering Contract shall be effective and enforceable among the Parties, their successors and assigns, only upon the occurrence
of any one or any combination of Access Midstream Partners, L.P.(or its affiliate), or Global Infrastructure Management, LLC (on
behalf of one or more of its managed funds or related entities), or Chesapeake Energy Corporation (or its affiliate) entering into
a transaction, on or before March 1, 2013, and the closing of such transaction to purchase in whole or in part the midstream gathering
system(s) and associated infrastructure assets of Chesapeake Midstream Operating, L.L.C. or Chesapeake Midstream Development, L.L.C.
or Utica Gas Services, L.L.C. whether by equity interest purchase, asset purchase, merger, consolidation, or otherwise (“Condition
Precedent”).

 

3.   Assignment
of Assigned Membership Interests. The Assignors transfer, assign, convey and deliver to the CGAS Assignee all of such Assignors’
rights, title, and interests in and to the Assigned Membership Interests by this instrument, and without the requirement of any
further action of the Parties, simultaneously with, and upon the occurrence of the Condition Precedent. The percentage share of
the Assigned Membership Interests to be assigned, conveyed, and delivered by Assignors to CGAS Assignee, and the resulting Sharing
Ratios of the Members, are set forth on Schedule I to this Assignment.

 

4.   Assignment
of the Gas Contract. The M3 Assignor transfers, assigns, conveys, and delivers to the Company Assignee all of the Gas Contract
(which includes all rights, titles, and interests in and to the Gas Contract and all equipment, facilities or contracts ancillary
thereto) by this instrument, and without the requirement of any further action of the Parties, simultaneously with, and upon the
occurrence of the Condition Precedent. The Company Assignee accepts the transfer, assignment, conveyance and delivery of the M3
Assignor’s interest in the Gas Contract and all of the right, title and interest of the M3 Assignor in and to the Gas Contract
and all equipment, facilities or contracts ancillary thereto and assumes all of the obligations of the M3 Assignor under the same,
by this instrument, and without the requirement of any further action of the Parties, simultaneous with, and upon the occurrence
of the Condition Precedent. The EV Consent Parties hereby consent to the transfer, assignment, conveyance and delivery of the M3
Assignor’s interest in the Gas Contract and all of the right, title and interest of the M3 Assignor in and to the Gas Contract
and all equipment, facilities or contracts ancillary thereto to Company Assignee by this instrument, and without the requirement
of any further action of the Parties, simultaneous with, and upon the occurrence of the Condition Precedent.

 

    	 

    	 

    

 

5.   Assignment
of the Gathering Contract. The M3 Assignor transfers, assigns, conveys, and delivers to the Company Assignee all of the Gathering
Contract (which includes all rights, titles, and interests in and to the Gathering Contract and all equipment, facilities or contracts
ancillary thereto) by this instrument, and without the requirement of any further action of the Parties, simultaneously with, and
upon the occurrence of the Condition Precedent. The Company Assignee accepts the transfer, assignment, conveyance and delivery
of the M3 Assignor’s interest in the Gathering Contract and all of the right, title and interest of the M3 Assignor in and
to the Gathering Contract and all equipment, facilities or contracts ancillary thereto and assumes all of the obligations of the
M3 Assignor under the same, by this instrument, and without the requirement of any further action of the Parties, simultaneous
with, and upon the occurrence of the Condition Precedent.

 

6.   Title.
Each of the Assignors hereby represents and warrants to CGAS Assignee that it owns, and will own upon the occurrence of the Condition
Precedent, good and valid title to the Assigned Membership Interests assigned by it hereunder, free and clear of all liens, claims
and encumbrances of any kind. The M3 Assignor hereby represents and warrants to Company Assignee that it owns, and will own upon
the occurrence of the Condition Precedent, all of and good and valid title to the interests of (a) “Processor” under
the Gas Contract and (b) “Customer” under the Gathering Contract, in each case, free and clear of all liens, claims
and encumbrances of any kind.

 

7.   Successors
and Assigns. This Assignment is binding upon, inures to the benefit of and is enforceable by the Parties and their respective
successors and assigns; provided, however, that no Member shall assign this Assignment except in conjunction with an assignment
of all of its Membership Interests and Company shall not assign this Assignment except in conjunction with an assignment of all
or substantially all of its assets.

 

8.   No Third
Party Beneficiaries. Except as may be specifically set forth in this Assignment, nothing in this Assignment, whether express
or implied, is intended to confer any rights or remedies under or by reason of this Assignment on any persons other than the Parties
and their respective permitted successors and assigns, nor is anything in this Assignment intended to relieve or discharge the
obligation or liability of any third persons to any Party, nor give any third persons any right of subrogation or action against
any Party.

 

9.   Governing
Law. This Assignment and the transactions contemplated hereby will be governed by and interpreted in accordance with the laws
of the State of Texas, without regard to principles of conflicts of laws.

 

    	 

    	 

    

 

10.  Further
Assurances. The Parties agree to execute all instruments and to take all actions that are reasonably necessary to effect, or
more fully document, the transactions contemplated hereby.

 

11.  Counterparts.
This Assignment may be signed in any number of counterparts, each of which will be deemed an original, but all of which together
will constitute one and the same instrument.

 

12.  Effective
Date. This Assignment shall be effective on the date of the occurrence of the Condition Precedent (“Effective Date”).

 

13.  Supersession.
This Assignment amend, restates, replaces and supersedes in its entirety the Prior Assignment, which shall no longer be of any
force or effect.

 

Remainder of Page
Intentionally Left Blank. 

Signature Page Follows.

 

    	 

    	 

    

 

IN WITNESS WHEREOF, the Parties have executed
this Assignment as of the date first written above, to be effective as of the Effective Date.

 

	 	ASSIGNORS:
	 	 
	 	M3
    Ohio Gathering LLC, a Delaware limited liability company
	 	 
	 	By: 	/s/FRANK D. TSURU
	 	Name: 	Frank D. Tsuru
	 	Title: 	Manager
	 	 	 
	 	Utica
    Gas Services L.L.C., an Oklahoma limited liability company
	 	 
	 	By: 	/s/J. MIKE STICE
	 	Name: 	J. Mike Stice
	 	Title: 	President
	 	 	 
	 	ASSIGNEES:
	 	 
	 	CGAS
    PROPERTIES, L.P. a Delaware limited partnership
	 	 	 
	 	By: EVCG GP, LLC, its general partner
	 	 
	 	By: 	/s/MARK A. HOUSER
	 	Name: 	Mark A. Houser
	 	Title: 	President and CEO
	 	 	 
	 	Utica
    East Ohio Midstream LLC, a Delaware limited liability company
	 	 	 
	 	By: 	/s/FRANK D. TSURU
	 	Name: 	Frank D. Tsuru
	 	Title: 	Manager/Attorney–in–Fact

 

Signature Page to Assignment of M3 Membership
Interests

 

    	 

    	 

    

 

 Exhibit 10.17

  

	 	EV Consent Parties:
	 	 
	 	ENERVEST ENERGY INSTITUTIONAL FUND IX, L.P.
	 	ENERVEST ENERGY INSTITUTIONAL FUND IX-WI, L.P.
	 	ENERVEST ENERGY INSTITUTIONAL FUND XI-A, L.P.
	 	ENERVEST ENERGY INSTITUTIONAL FUND XI-WI, L.P.
	 	each a Delaware limited partnership
	 	 
	 	By: EnerVest, Ltd., general partner of each of the above named entities
	 	 
	 	By: EnerVest Management GP, L.C., its general partner
	 	 
	 	By: 	/s/MARK A. HOUSER
	 	Name:	Mark A. Houser
	 	Title: 	Executive Vice President and COO
	 	 	 
	 	BELDEN
    AND BLAKE CORPORATION, an Ohio corporation
	 	 	 
	 	By:	/s/JAMES M. VANDERHIDER
	 	Name:	James M. Vanderhider
	 	Title:	President and CEO

  

    	 

    	 

    

  

SCHEDULE I

 

TO

 

ASSIGNMENT OF M3 AND UGS MEMBERSHIP
INTERESTS

  

	Assignor	 	Assignee(s)	 	Percentage of
 Assignor’s
 Membership Interest
 Assigned	 
	 	 	 	 	 	 
	M3 Ohio Gathering LLC	 	CGAS Properties, L.P.	 	 	9.9099	%
	 	 	 	 	 	 	 
	Utica Gas Services, L.L.C.	 	CGAS Properties, L.P.	 	 	16.5247	%

 

SHARING RATIOS UPON ASSIGNMENT OF
M3 AND UGS MEMBERSHIP INTERESTS

 

	Member	 	Sharing Ratio	 
	 	 	 	 	 
	M3 Ohio Gathering LLC	 	 	30	%
	 	 	 	 	 
	Utica Gas Services, L.L.C. (or its successor or assign)	 	 	49	%
	 	 	 	 	 
	CGAS Properties, L.P.	 	 	21	%
	 	 	 	 	 
	TOTAL	 	 	100	%

 

    	Schedule 1

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