ROBERTSON (SAN ANDRES) UNIT

Oil · District 8A · Lease #66037

Operator: SHELL WESTERN E&P INC.

Cum Oil

4.7M BBL

Cum Gas

1.7M MCF

casinghead

Wells

73

Production

1993-01 — 2026-04

Peak Month

2001-07

Production History

Cum Oil: 4,684,141 BBL Cum Gas: 1,653,822 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

33,709 BBL/mo

Di (annual)

11.4%

b-factor

0.0

EUR

3,530,347 BBL

R-squared

0.817

type

exponential

Operator History (from monthly production reports)

2026-05 — 2026-07 OCCIDENTAL PERMIAN EOR, LLC 3 mo
2000-05 — 2026-04 OCCIDENTAL PERMIAN LTD. 312 mo
1997-03 — 2000-04 ALTURA ENERGY LTD. 38 mo
1993-01 — 1997-02 SHELL WESTERN E&P INC. 50 mo

Wells (73)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1261OCCIDENTAL PERMIAN LTD.37,2502016-04-20
412OCCIDENTAL PERMIAN LTD.25,0002014-12-11
512OCCIDENTAL PERMIAN LTD.15,0002014-12-11
1061OCCIDENTAL PERMIAN LTD.14,9002007-02-10
1071OCCIDENTAL PERMIAN LTD.14,9002007-02-10
1101OCCIDENTAL PERMIAN LTD.14,9002007-02-10
1131OCCIDENTAL PERMIAN LTD.14,9002007-02-10
1141OCCIDENTAL PERMIAN LTD.14,9002007-02-10
1171OCCIDENTAL PERMIAN LTD.14,9002007-02-10
1081OCCIDENTAL PERMIAN LTD.25,4002005-03-01
1091OCCIDENTAL PERMIAN LTD.14,9002005-02-28
1151OCCIDENTAL PERMIAN LTD.14,9002005-02-28
1161OCCIDENTAL PERMIAN LTD.14,9002005-02-28
111OCCIDENTAL PERMIAN LTD.14,9002001-06-27
131OCCIDENTAL PERMIAN LTD.14,9002001-04-13
102OCCIDENTAL PERMIAN LTD.14,9002001-03-20
191OCCIDENTAL PERMIAN LTD.14,9002001-03-20
212OCCIDENTAL PERMIAN LTD.14,9002001-03-20
312OCCIDENTAL PERMIAN LTD.14,9002001-03-20
192OCCIDENTAL PERMIAN LTD.24,9002001-02-09
222OCCIDENTAL PERMIAN LTD.24,9002001-02-09
232OCCIDENTAL PERMIAN LTD.14,9002001-02-09
101OCCIDENTAL PERMIAN LTD.15,0001999-12-10
181OCCIDENTAL PERMIAN LTD.15,0001999-12-10
241OCCIDENTAL PERMIAN LTD.15,0001999-12-10
231OCCIDENTAL PERMIAN LTD.15,0001999-11-15
221OCCIDENTAL PERMIAN LTD.15,0001999-05-12
71OCCIDENTAL PERMIAN LTD.15,0001999-05-12
171OCCIDENTAL PERMIAN LTD.15,0001998-04-15
141OCCIDENTAL PERMIAN LTD.15,0001997-11-07
201OCCIDENTAL PERMIAN LTD.15,0001997-11-07
211OCCIDENTAL PERMIAN LTD.15,0001997-11-07
81OCCIDENTAL PERMIAN LTD.15,0001997-01-23
151OCCIDENTAL PERMIAN LTD.15,0001996-12-12
161OCCIDENTAL PERMIAN LTD.15,0001996-12-12
91OCCIDENTAL PERMIAN LTD.15,0001996-12-12
26OCCIDENTAL PERMIAN LTD.15,3001995-03-22
2OCCIDENTAL PERMIAN LTD.14,8501992-05-15
2WOCCIDENTAL PERMIAN LTD.14,8501992-05-15
19OCCIDENTAL PERMIAN LTD.112,1201989-10-24
5SOCCIDENTAL PERMIAN LTD.17,1451989-05-03
12WOCCIDENTAL PERMIAN LTD.14,7801979-03-07
14WOCCIDENTAL PERMIAN LTD.14,7801979-03-07
3WOCCIDENTAL PERMIAN LTD.14,7901979-03-07
6OCCIDENTAL PERMIAN LTD.16,8001978-10-23
6WOCCIDENTAL PERMIAN LTD.16,8001978-10-23
11OCCIDENTAL PERMIAN LTD.27,3001978-09-28
11WOCCIDENTAL PERMIAN LTD.27,3001978-09-28
1WOCCIDENTAL PERMIAN LTD.14,9001978-09-13
7OCCIDENTAL PERMIAN LTD.14,7001978-01-30
10OCCIDENTAL PERMIAN LTD.14,8001977-07-08
10WOCCIDENTAL PERMIAN LTD.14,8001977-07-08
15OCCIDENTAL PERMIAN LTD.14,8001977-07-05
15WOCCIDENTAL PERMIAN LTD.14,8001977-07-05
23OCCIDENTAL PERMIAN LTD.14,8001977-07-05
25OCCIDENTAL PERMIAN LTD.14,8001977-07-05
1342-165-02502OCCIDENTAL PERMIAN LTD.------
16W42-165-30687OCCIDENTAL PERMIAN LTD.------
1742-165-30618OCCIDENTAL PERMIAN LTD.------
17W42-165-30618OCCIDENTAL PERMIAN LTD.------
18W42-165-30656OCCIDENTAL PERMIAN LTD.------
2042-165-02504OCCIDENTAL PERMIAN LTD.------
2142-165-02503OCCIDENTAL PERMIAN LTD.------
2242-165-30619OCCIDENTAL PERMIAN LTD.------
2442-165-30681OCCIDENTAL PERMIAN LTD.------
24W42-165-30681OCCIDENTAL PERMIAN LTD.------
442-165-30625OCCIDENTAL PERMIAN LTD.------
4W42-165-30625OCCIDENTAL PERMIAN LTD.------
5W42-165-30684OCCIDENTAL PERMIAN LTD.------
842-165-30685OCCIDENTAL PERMIAN LTD.------
8W42-165-30685OCCIDENTAL PERMIAN LTD.------
942-165-30626OCCIDENTAL PERMIAN LTD.------
9W42-165-30626OCCIDENTAL PERMIAN LTD.------