MASTEN, F. O. "D"

Oil · District 8A · Lease #3749

Operator: WALSH PETROLEUM, INC.

Fields: LEVELLAND

Cum Oil

234k BBL

Cum Gas

652k MCF

casinghead

Wells

15

Production

1993-01 — 2026-04

Peak Month

1994-03

Production History

Cum Oil: 234,429 BBL Cum Gas: 652,421 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,110 BBL/mo

Di (annual)

15.6%

b-factor

0.0

EUR

162,441 BBL

R-squared

0.924

type

exponential

Operator History (from monthly production reports)

2023-01 — 2026-07 EXTEX OPERATING COMPANY 43 mo
1997-11 — 2022-12 WALSH PETROLEUM, INC. 302 mo
1993-02 — 1997-10 PARKER & PARSLEY, WPI AGENT 57 mo
1993-01 — 1993-01 WALSH PETROLEUM, INC. 1 mo

Wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4EXTEX OPERATING COMPANY25,1001997-03-18
15EXTEX OPERATING COMPANY15,1001996-11-15
9EXTEX OPERATING COMPANY15,0001996-07-02
10EXTEX OPERATING COMPANY15,1001993-05-19
12EXTEX OPERATING COMPANY15,1001993-05-19
13EXTEX OPERATING COMPANY15,1001993-05-19
11EXTEX OPERATING COMPANY15,1001993-05-17
14EXTEX OPERATING COMPANY15,1001993-05-05
5EXTEX OPERATING COMPANY15,1001993-03-02
8EXTEX OPERATING COMPANY15,1001993-02-24
6EXTEX OPERATING COMPANY15,1001993-02-23
2 XEXTEX OPERATING COMPANY15,1001993-02-04
7EXTEX OPERATING COMPANY15,1001993-02-04
142-079-02174EXTEX OPERATING COMPANY------
2W42-079-01928EXTEX OPERATING COMPANY------