KEYSTONE SILURIAN UNIT

Oil · District 08 · Lease #51896

Operator: XTO ENERGY INC.

Cum Oil

72k BBL

Cum Gas

63k MCF

casinghead

Wells

27

Production

2019-03 — 2026-04

Peak Month

2022-10

Production History

Cum Oil: 71,892 BBL Cum Gas: 62,690 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,414 BBL/mo

Di (annual)

44.9%

b-factor

0.0

EUR

37,763 BBL

R-squared

0.375

type

exponential

Operator History (from monthly production reports)

2025-04 — 2026-07 HILCORP ENERGY COMPANY 16 mo
2019-03 — 2025-03 XTO ENERGY INC. 73 mo

Wells (27)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
30HILCORP ENERGY COMPANY19,9202019-07-12
31HILCORP ENERGY COMPANY17,7301998-02-05
37HILCORP ENERGY COMPANY17,9001998-01-02
20HILCORP ENERGY COMPANY19,7491980-12-30
1342-495-10896HILCORP ENERGY COMPANY------
1542-495-01148HILCORP ENERGY COMPANY------
1742-495-01270HILCORP ENERGY COMPANY------
19W42-495-10170HILCORP ENERGY COMPANY------
242-495-03900HILCORP ENERGY COMPANY------
21W42-495-01301HILCORP ENERGY COMPANY------
2242-495-01281HILCORP ENERGY COMPANY------
2342-495-01269HILCORP ENERGY COMPANY------
2642-495-10169HILCORP ENERGY COMPANY------
2742-495-10154HILCORP ENERGY COMPANY------
28W42-495-30045HILCORP ENERGY COMPANY------
3442-495-01272HILCORP ENERGY COMPANY------
3542-495-04131HILCORP ENERGY COMPANY------
3942-495-01291HILCORP ENERGY COMPANY------
41W42-495-02266HILCORP ENERGY COMPANY------
4242-495-02256HILCORP ENERGY COMPANY------
4342-495-02268HILCORP ENERGY COMPANY------
4442-495-02273HILCORP ENERGY COMPANY------
4542-495-01242HILCORP ENERGY COMPANY------
5142-495-01259HILCORP ENERGY COMPANY------
5242-495-01163HILCORP ENERGY COMPANY------
5342-495-01189HILCORP ENERGY COMPANY------
6W42-495-01280HILCORP ENERGY COMPANY------