Brazos Valley Longhorn, L.L.C. SC 13G WildHorse Resource Development Corp

EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) of the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including any and all amendments thereto) with respect to the common stock, par value $0.01 per share, of WildHorse Resource Development Corporation and further agree that this Joint Filing Agreement shall be included as an Exhibit to such joint filing. In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of February 5, 2018.

EIGF AGGREGATOR LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
TE DRILLING AGGREGATOR LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
AURORA C-I HOLDING L.P.
By: Aurora Holding GP LLC, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR ENERGY INCOME AND GROWTH FUND I L.P.
By: KKR Associates EIGF L.P., its general partner
By: KKR EIGF LLC, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR ASSOCIATES EIGF L.P.
By: KKR EIGF LLC, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory

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KKR EIGF LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR ENERGY INCOME AND GROWTH FUND I-TE L.P.
By: KKR Associates EIGF TE L.P., its general partner
By: KKR EIGF LLC, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR ASSOCIATES EIGF TE L.P.
By: KKR EIGF LLC, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
AURORA HOLDING GP LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR UPSTREAM ASSOCIATES LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR FUND HOLDINGS L.P.
By: KKR Group Holdings L.P., its general partner
By: KKR Group Limited, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Director

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KKR UPSTREAM LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Authorized Signatory
KKR FUND HOLDINGS GP LIMITED
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Director
KKR GROUP HOLDINGS L.P.
By: KKR Group Limited, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Director
KKR GROUP LIMITED
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Director
KKR & CO. L.P.
By: KKR Management LLC, its general partner
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Chief Financial Officer
KKR MANAGEMENT LLC
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact for William J. Janetschek,
	Chief Financial Officer

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HENRY R. KRAVIS
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact
GEORGE R. ROBERTS
By:	/s/ Terence Gallagher
Name:	Terence Gallagher
Title:	Attorney-in-fact

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