TXL "A"

Oil · District 08 · Lease #16600

Operator: SOUTHWEST ROYALTIES, INC.

Cum Oil

356k BBL

Cum Gas

21 MCF

casinghead

Wells

8

Production

1993-01 — 2026-03

Peak Month

1993-03

Production History

Cum Oil: 355,660 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,876 BBL/mo

Di (annual)

9.5%

b-factor

0.0

EUR

360,129 BBL

R-squared

0.695

type

exponential

Operator History (from monthly production reports)

2020-01 — 2026-07 BLACK RIVER OPERATING LLC 79 mo
2009-06 — 2019-12 APACHE CORPORATION 127 mo
1998-08 — 2009-05 MARATHON OIL COMPANY 130 mo
1993-01 — 1998-07 SOUTHWEST ROYALTIES, INC. 67 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
16BLACK RIVER OPERATING LLC11,7001988-02-02
12WBLACK RIVER OPERATING LLC11,6001988-02-01
13WBLACK RIVER OPERATING LLC11,6001988-02-01
14WBLACK RIVER OPERATING LLC11,6001988-02-01
142-431-00190BLACK RIVER OPERATING LLC------
242-431-00191BLACK RIVER OPERATING LLC------
342-431-00192BLACK RIVER OPERATING LLC------
442-431-00193BLACK RIVER OPERATING LLC------