ORSBORN

Oil · District 7B · Lease #20334

Operator: WESTPORT OIL AND GAS COMPANY, LP

Fields: KATZ

Cum Oil

154k BBL

Cum Gas

23k MCF

casinghead

Wells

18

Production

1993-01 — 2009-10

Peak Month

1993-03

Production History

Cum Oil: 154,312 BBL Cum Gas: 22,821 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,599 BBL/mo

Di (annual)

30.5%

b-factor

0.3

EUR

143,318 BBL

R-squared

0.910

type

hyperbolic

Operator History (from monthly production reports)

2007-04 — 2010-05 APACHE CORPORATION 38 mo
2006-03 — 2007-03 KERR-MCGEE OIL & GAS ONSHORE LP 13 mo
2002-03 — 2006-02 WESTPORT OIL AND GAS COMPANY, LP 48 mo
1998-09 — 2002-02 BELCO ENERGY CORP. 42 mo
1998-03 — 1998-08 CODA ENERGY, INC. 6 mo
1996-02 — 1998-02 ENERVEST OPERATING, L.L.C. 25 mo
1993-01 — 1996-01 CONOCO INC. 37 mo

Wells (18)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
26GREAT AMERICAN RESOURCES INC.25,2801990-11-16
29CHOLLA PETROLEUM INC.25,2701990-11-16
41GREAT AMERICAN RESOURCES INC.15,3001990-06-13
4CONOCO INC.15,3001989-10-10
6CHOLLA PETROLEUM INC.15,2001989-10-06
40CHOLLA PETROLEUM INC.25,3001989-05-30
36GREAT AMERICAN RESOURCES INC.15,3001989-03-24
38GREAT AMERICAN RESOURCES INC.15,3001988-02-16
63GREAT AMERICAN RESOURCES INC.15,3001988-02-16
37CHOLLA PETROLEUM INC.25,3001988-01-18
2APACHE CORPORATION15,1051986-07-07
17CONOCO INC.15,1331985-06-10
28GREAT AMERICAN RESOURCES INC.15,2801985-01-22
30CHOLLA PETROLEUM INC.15,2901985-01-22
27CHOLLA PETROLEUM INC.15,2801985-01-15
1GREAT AMERICAN RESOURCES INC.15,1001984-12-07
22APACHE CORPORATION15,2501984-08-21
742-269-00108CONOCO INC.------