PIERSON, WILLIAM ESTATE

Oil · District 8A · Lease #5195

Operator: XTO ENERGY INC.

Cum Oil

180k BBL

Cum Gas

101k MCF

casinghead

Wells

8

Production

1993-01 — 2026-04

Peak Month

2010-06

Production History

Cum Oil: 179,877 BBL Cum Gas: 100,890 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,974 BBL/mo

Di (annual)

14.8%

b-factor

0.1

EUR

176,274 BBL

R-squared

0.518

type

hyperbolic

Operator History (from monthly production reports)

2025-07 — 2026-07 HILCORP ENERGY COMPANY 13 mo
2001-06 — 2025-06 XTO ENERGY INC. 289 mo
1993-05 — 2001-05 CROSS TIMBERS OPERATING COMPANY 97 mo
1993-01 — 1993-04 SHELL WESTERN E&P INC. 4 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12HILCORP ENERGY COMPANY111,0902014-03-13
15HILCORP ENERGY COMPANY411,0662013-07-09
15HHILCORP ENERGY COMPANY411,0662013-07-09
14HILCORP ENERGY COMPANY310,8002008-06-16
14HHILCORP ENERGY COMPANY310,8002008-06-16
10HHILCORP ENERGY COMPANY210,9002007-07-27
16HILCORP ENERGY COMPANY16,2901995-08-11
13HILCORP ENERGY COMPANY19881994-08-09