Warburg Pincus X GP Form 4 Change in insider ownership

Exhibit 99.1

WARBURG PINCUS PRIVATE EQUITY X O&G, L.P.
By:		Warburg Pincus X, L.P., its general partner
By:		Warburg Pincus X GP L.P., its general partner
By:		WPP GP LLC, its general partner
By:		Warburg Pincus Partners, L.P., its managing member
By:		Warburg Pincus Partners GP LLC, its general partner
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WARBURG PINCUS X PARTNERS, L.P.
By:		Warburg Pincus X, L.P., its general partner
By:		Warburg Pincus X GP L.P., its general partner
By:		WPP GP LLC, its general partner
By:		Warburg Pincus Partners, L.P., its managing member
By:		Warburg Pincus Partners GP LLC, its general partner
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WARBURG PINCUS X, L.P.
By:		Warburg Pincus X GP L.P., its general partner
By:		WPP GP LLC, its general partner
By:		Warburg Pincus Partners, L.P., its managing member
By:		Warburg Pincus Partners GP LLC, its general partner
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WARBURG PINCUS X GP L.P.
By:		WPP GP LLC, its general partner
By:		Warburg Pincus Partners, L.P., its managing member
By:		Warburg Pincus Partners GP LLC, its general partner
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WPP GP LLC
By:		Warburg Pincus Partners, L.P., its managing member
By:		Warburg Pincus Partners GP LLC, its general partner
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WARBURG PINCUS PARTNERS, L.P.
By:		Warburg Pincus Partners GP LLC, its general partner
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WARBURG PINCUS PARTNERS GP LLC
By:		Warburg Pincus & Co., its managing member
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
WARBURG PINCUS & CO.
By:	/s/ Robert B. Knauss
	Name:	Robert B. Knauss
	Title:	Partner
			Date September 6, 2019