< leases

DECK "A"

Oil · District 7C · Lease #11299

Operator: TSF OPERATING

Fields: SPRABERRY (TREND AREA)

Cum Oil

31k BBL

Cum Gas

447k MCF

casinghead

Wells

2

Production

1993-01 — 2018-11

Peak Month

1993-08

Production History

Cum Oil: 30,555 BBL Cum Gas: 446,839 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

402 BBL/mo

Di (annual)

39.0%

b-factor

0.3

EUR

17,431 BBL

R-squared

0.793

type

hyperbolic

Operator History (from monthly production reports)

2018-03 — 2020-03 PIONEER NATURAL RES. USA, INC. 25 mo
2017-05 — 2018-02 PARSLEY ENERGY OPERATIONS, LLC 10 mo
2016-05 — 2017-04 DE OPERATING LLC 12 mo
2007-06 — 2016-04 LEGACY RESERVES OPERATING LP 107 mo
2001-12 — 2007-05 TSF OPERATING 66 mo
1993-01 — 2001-11 KEYSTONE ENERGY OIL & GAS, INC. 107 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-461-32296PIONEER NATURAL RES. USA INC.18,4191984-11-06
142-461-32290PIONEER NATURAL RES. USA INC.18,4191984-10-31