SOUTHWEST ANDREWS UNIT

Oil · District 08 · Lease #35543

Operator: UNION OIL COMPANY OF CALIFORNIA

Cum Oil

2.5M BBL

Cum Gas

3.9M MCF

casinghead

Wells

37

Production

1997-12 — 2026-04

Peak Month

1998-06

Production History

Cum Oil: 2,475,018 BBL Cum Gas: 3,871,040 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

18,629 BBL/mo

Di (annual)

14.8%

b-factor

0.5

EUR

2,383,826 BBL

R-squared

0.888

type

hyperbolic

Operator History (from monthly production reports)

2022-05 — 2026-07 MORNINGSTAR OPERATING LLC 51 mo
2022-01 — 2022-04 MORNINGSTAR PARTNERS, L.P. 4 mo
2006-04 — 2021-12 CHEVRON MIDCONTINENT, L.P. 189 mo
2000-06 — 2006-03 PURE RESOURCES, L.P. 70 mo
1997-12 — 2000-05 UNION OIL COMPANY OF CALIFORNIA 30 mo

Wells (37)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7818MORNINGSTAR OPERATING LLC111,0002022-10-04
8201AMORNINGSTAR OPERATING LLC312,7452022-07-26
4418NRMORNINGSTAR OPERATING LLC19,7502004-08-30
7301AMORNINGSTAR OPERATING LLC19,3001998-01-13
7718NMORNINGSTAR OPERATING LLC19,3001998-01-13
5518NMORNINGSTAR OPERATING LLC19,3001997-12-30
5718NMORNINGSTAR OPERATING LLC19,3001997-12-30
7518NMORNINGSTAR OPERATING LLC19,3001997-12-30
3318NMORNINGSTAR OPERATING LLC19,3001997-11-18
5318NMORNINGSTAR OPERATING LLC19,3001997-11-18
3518NMORNINGSTAR OPERATING LLC19,3001997-09-22
7318NMORNINGSTAR OPERATING LLC19,3001997-09-22
6218NMORNINGSTAR OPERATING LLC19,9001995-06-28
2201AMORNINGSTAR OPERATING LLC29,7501995-02-16
8218NMORNINGSTAR OPERATING LLC212,5621994-12-15
2818NMORNINGSTAR OPERATING LLC19,7801994-09-28
8418NMORNINGSTAR OPERATING LLC212,3881994-06-23
8401AMORNINGSTAR OPERATING LLC212,4421994-06-21
4201AMORNINGSTAR OPERATING LLC29,7301994-05-04
6618NMORNINGSTAR OPERATING LLC29,7201994-04-22
4618NMORNINGSTAR OPERATING LLC49,8001994-02-18
4418NMORNINGSTAR OPERATING LLC29,5701994-02-16
6201AMORNINGSTAR OPERATING LLC19,7201994-01-14
6401AMORNINGSTAR OPERATING LLC19,7501994-01-10
4818NMORNINGSTAR OPERATING LLC29,7301993-12-17
8818NMORNINGSTAR OPERATING LLC212,4981993-12-17
2618NMORNINGSTAR OPERATING LLC19,7801993-10-27
6818NMORNINGSTAR OPERATING LLC29,6501993-09-01
2418NMORNINGSTAR OPERATING LLC19,8001993-07-21
2218NMORNINGSTAR OPERATING LLC29,9601993-05-26
4218NMORNINGSTAR OPERATING LLC110,4501993-05-24
2401AMORNINGSTAR OPERATING LLC29,9001986-12-29
1MORNINGSTAR OPERATING LLC19,1501980-03-05
1542-003-11020MORNINGSTAR OPERATING LLC------
5 U42-003-04366MORNINGSTAR OPERATING LLC------
6418N42-003-02118MORNINGSTAR OPERATING LLC------
8618N42-003-07724MORNINGSTAR OPERATING LLC------