KIRBY

Oil · District 10 · Lease #4970

Operator: TOMBSTONE PRODUCTION, INC.

Cum Oil

5k BBL

Cum Gas

385k MCF

casinghead

Wells

2

Production

1993-01 — 2017-03

Peak Month

1999-07

Production History

Cum Oil: 5,139 BBL Cum Gas: 384,576 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

63 BBL/mo

Di (annual)

302.4%

b-factor

1.2

EUR

1,609 BBL

R-squared

0.328

type

hyperbolic

Operator History (from monthly production reports)

2018-05 — 2026-07 BORGER RESOURCES 4 LLC 99 mo
2016-10 — 2018-04 PONDEROSA TX OPERATING LLC 19 mo
2007-05 — 2016-09 TOMBSTONE PRODUCTION INC. 113 mo
2005-12 — 2007-04 TOMBSTONE PRODUCTION, INC. 17 mo
1993-01 — 2005-11 G. T. OIL & GAS CO. 155 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1BORGER RESOURCES 4 LLC13,4501981-10-20
2BORGER RESOURCES 4 LLC13,4501981-10-20