ROBERTSON

Oil · District 08 · Lease #36200

Operator: SOUTHWEST ROYALTIES, INC.

Cum Oil

90k BBL

Cum Gas

1.5M MCF

casinghead

Wells

4

Production

1999-11 — 2026-04

Peak Month

2001-10

Production History

Cum Oil: 89,848 BBL Cum Gas: 1,476,157 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,185 BBL/mo

Di (annual)

27.2%

b-factor

0.3

EUR

73,028 BBL

R-squared

0.875

type

hyperbolic

Operator History (from monthly production reports)

2018-11 — 2026-07 HIGHPEAK ENERGY HOLDINGS, LLC 93 mo
2001-01 — 2018-10 SOUTHWEST ROYALTIES, INC. 214 mo
1999-11 — 2000-12 MILTEX OIL COMPANY 14 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HIGHPEAK ENERGY HOLDINGS, LLC18,0002001-07-03
3HIGHPEAK ENERGY HOLDINGS, LLC17,9002001-03-14
2HIGHPEAK ENERGY HOLDINGS, LLC28,0001999-09-20
1HIGHPEAK ENERGY HOLDINGS, LLC18,1001997-12-18