MCMASTER

Oil · District 7C · Lease #13967

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

21k BBL

Cum Gas

398k MCF

casinghead

Wells

3

Production

1995-11 — 2026-03

Peak Month

1995-12

Production History

Cum Oil: 21,300 BBL Cum Gas: 398,428 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

159 BBL/mo

Di (annual)

16.3%

b-factor

0.4

EUR

17,244 BBL

R-squared

0.687

type

hyperbolic

Operator History (from monthly production reports)

2021-06 — 2026-07 PIONEER NATURAL RES. USA, INC. 62 mo
2018-09 — 2021-05 DE3 OPERATING LLC 33 mo
2003-10 — 2018-08 JM COX RESOURCES, L.P. 179 mo
1995-11 — 2003-09 COX, JOHN L. 95 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4PIONEER NATURAL RES. USA, INC.18,5001984-10-18
142-383-20018PIONEER NATURAL RES. USA, INC.------
342-383-20016PIONEER NATURAL RES. USA, INC.------