TUBB -D-

Oil · District 08 · Lease #25121

Operator: PHILLIPS PETROLEUM COMPANY

Cum Oil

124k BBL

Cum Gas

964k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

1997-10

Production History

Cum Oil: 123,892 BBL Cum Gas: 964,300 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

833 BBL/mo

Di (annual)

12.6%

b-factor

0.6

EUR

128,208 BBL

R-squared

0.761

type

hyperbolic

Operator History (from monthly production reports)

2007-10 — 2026-07 CAMBRIAN MANAGEMENT, LTD. 226 mo
2001-08 — 2007-09 CAMBRIAN MANAGEMENT LTD 74 mo
1994-11 — 2001-07 COASTAL MANAGEMENT CORPORATION 81 mo
1993-01 — 1994-10 PHILLIPS PETROLEUM COMPANY 22 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7CAMBRIAN MANAGEMENT, LTD.14,5501983-02-04
5CAMBRIAN MANAGEMENT, LTD.14,5001980-07-30
2CAMBRIAN MANAGEMENT, LTD.24,8791979-07-23