PORTWOOD

Oil · District 09 · Lease #18862

Operator: SHAWVER & SHAWVER

Cum Oil

4k BBL

Cum Gas

42 MCF

casinghead

Wells

1

Production

1993-01 — 1998-03

Peak Month

1995-12

Production History

Cum Oil: 4,028 BBL Cum Gas: 42 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

315 BBL/mo

Di (annual)

564.8%

b-factor

0.6

EUR

1,517 BBL

R-squared

0.355

type

hyperbolic

Operator History (from monthly production reports)

1996-10 — 2001-05 PALMER TANK TRUCKS, INC. 56 mo
1995-11 — 1996-09 SHAWVER & SHAWVER 11 mo
1995-04 — 1995-10 HUGHES & SHAWVER 7 mo
1993-01 — 1995-03 NORTHLAND ROYALTY CO. 27 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PALMER TANK TRUCKS INC.15,6001978-02-23