UNIVERSITY -15-

Oil · District 7C · Lease #5646

Operator: SCYTHIAN, LTD.

Cum Oil

87k BBL

Cum Gas

223k MCF

casinghead

Wells

5

Production

1993-01 — 2022-03

Peak Month

2011-11

Production History

Cum Oil: 86,726 BBL Cum Gas: 222,713 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,475 BBL/mo

Di (annual)

74.2%

b-factor

0.6

EUR

52,293 BBL

R-squared

0.548

type

hyperbolic

Operator History (from monthly production reports)

2006-05 — 2023-06 PIONEER NATURAL RES. USA, INC. 206 mo
1998-10 — 2006-04 SCYTHIAN, LTD. 91 mo
1998-02 — 1998-09 RAM OPERATING, INC. 8 mo
1993-01 — 1998-01 OKLAHOMA RB OPERATING COMPANY 61 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6PIONEER NATURAL RES. USA INC.110,5002010-01-13
4PIONEER NATURAL RES. USA INC.18,4001985-05-15
3PIONEER NATURAL RES. USA INC.18,4001984-05-23
142-383-11432PIONEER NATURAL RES. USA INC.------
242-383-30193PIONEER NATURAL RES. USA INC.------