UNIVERSITY "13"

Oil · District 7C · Lease #9876

Operator: VISTA RESOURCES, INC. (A)

Cum Oil

273k BBL

Cum Gas

947k MCF

casinghead

Wells

8

Production

1993-01 — 2026-04

Peak Month

2008-11

Production History

Cum Oil: 273,385 BBL Cum Gas: 947,473 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,363 BBL/mo

Di (annual)

9.2%

b-factor

0.0

EUR

176,424 BBL

R-squared

0.517

type

exponential

Operator History (from monthly production reports)

2006-05 — 2026-07 PIONEER NATURAL RES. USA, INC. 243 mo
2001-02 — 2006-04 SCYTHIAN, LTD. 63 mo
2000-03 — 2001-01 PRIZE OPERATING COMPANY 11 mo
1998-11 — 2000-02 VISTA RESOURCES, INC. (A) 16 mo
1994-04 — 1998-10 MIDLAND RES. OPER. CO., INC. 55 mo
1993-01 — 1994-03 MIRESCO, INC. 15 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11PIONEER NATURAL RES. USA, INC.110,0002010-02-17
10PIONEER NATURAL RES. USA, INC.110,0002007-12-15
6PIONEER NATURAL RES. USA, INC.211,5001999-01-13
5PIONEER NATURAL RES. USA, INC.17,8001991-06-03
1PIONEER NATURAL RES. USA, INC.17,9001982-10-18
2PIONEER NATURAL RES. USA, INC.17,9001982-10-18
3PIONEER NATURAL RES. USA, INC.17,9001982-10-18
4PIONEER NATURAL RES. USA, INC.17,9001982-10-14