CALVERLEY 26

Oil · District 08 · Lease #23456

Operator: RSP PERMIAN, LLC

Cum Oil

122k BBL

Cum Gas

482k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

2015-04

Production History

Cum Oil: 122,457 BBL Cum Gas: 481,907 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,064 BBL/mo

Di (annual)

18.2%

b-factor

0.0

EUR

70,217 BBL

R-squared

0.338

type

exponential

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2019-02 — 2021-05 DE3 OPERATING LLC 28 mo
2018-08 — 2019-01 COG OPERATING LLC 6 mo
2014-09 — 2018-07 RSP PERMIAN, LLC 47 mo
2003-10 — 2014-08 JM COX RESOURCES, L.P. 131 mo
1993-01 — 2003-09 COX, JOHN L. 129 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2APIONEER NATURAL RES. USA, INC.112,0002014-10-08
1APIONEER NATURAL RES. USA, INC.112,0002014-07-16
142-173-30127PIONEER NATURAL RES. USA, INC.------
242-173-30197PIONEER NATURAL RES. USA, INC.------