UNIVERSITY -2-

Oil · District 7C · Lease #11319

Operator: ROLLING HILLS OIL & GAS, INC

Cum Oil

42k BBL

Cum Gas

700k MCF

casinghead

Wells

7

Production

1993-01 — 2026-04

Peak Month

1993-07

Production History

Cum Oil: 42,338 BBL Cum Gas: 699,578 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

328 BBL/mo

Di (annual)

9.5%

b-factor

0.0

EUR

41,008 BBL

R-squared

0.752

type

exponential

Operator History (from monthly production reports)

2025-10 — 2026-07 ROLLING HILLS OIL & GAS, INC 10 mo
2021-02 — 2025-09 BUSTAMANTE OIL COMPANY 56 mo
2015-01 — 2021-01 BREITBURN OPERATING L.P. 73 mo
2006-12 — 2014-12 QUANTUM RESOURCES MANAGEMENT,LLC 97 mo
2006-05 — 2006-11 CIMAREX ENERGY CO. OF COLORADO 7 mo
2002-04 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 49 mo
1999-07 — 2002-03 PRIZE OPERATING COMPANY 33 mo
1997-09 — 1999-06 PIONEER NATURAL RES. USA, INC. 22 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7ROLLING HILLS OIL & GAS, INC18,2001985-02-28
6ROLLING HILLS OIL & GAS, INC18,2001985-02-20
5ROLLING HILLS OIL & GAS, INC18,2001984-12-13
3ROLLING HILLS OIL & GAS, INC18,2001984-10-09
4ROLLING HILLS OIL & GAS, INC18,2001984-10-04
2ROLLING HILLS OIL & GAS, INC18,2001984-09-04
1ROLLING HILLS OIL & GAS, INC18,2001984-06-15