THREE SISTERS 01

Oil · District 02 · Lease #11430

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

2.4M BBL

Cum Gas

9.8M MCF

casinghead

Wells

12

Production

2017-09 — 2026-04

Peak Month

2022-10

Production History

Cum Oil: 2,403,136 BBL Cum Gas: 9,818,471 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

262,224 BBL/mo

Di (annual)

712.9%

b-factor

0.7

EUR

1,346,071 BBL

R-squared

0.869

type

hyperbolic

Operator History (from monthly production reports)

2023-03 — 2026-07 MARATHON OIL EF LLC 41 mo
2019-10 — 2023-02 ENSIGN OPERATING LLC 41 mo
2017-09 — 2019-09 PIONEER NATURAL RES. USA, INC. 25 mo

Wells (12)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
58HMARATHON OIL EF LLC123,0002022-02-18
59HMARATHON OIL EF LLC125,0002022-02-18
60HMARATHON OIL EF LLC125,0002022-02-18
61HMARATHON OIL EF LLC125,0002022-02-18
62HMARATHON OIL EF LLC125,0002022-02-18
51HMARATHON OIL EF LLC125,0002020-04-15
52HMARATHON OIL EF LLC125,0002020-04-15
53HMARATHON OIL EF LLC125,0002020-04-15
54HMARATHON OIL EF LLC125,0002020-04-15
44HMARATHON OIL EF LLC326,0002018-09-30
36HMARATHON OIL EF LLC325,0002015-09-18
09HMARATHON OIL EF LLC121,0002012-04-21