WELCH TRUST 12

Oil · District 7C · Lease #18906

Operator: PARSLEY ENERGY OPERATIONS, LLC

Cum Oil

43k BBL

Cum Gas

185k MCF

casinghead

Wells

2

Production

2014-10 — 2026-04

Peak Month

2014-12

Production History

Cum Oil: 42,646 BBL Cum Gas: 184,867 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,904 BBL/mo

Di (annual)

78.9%

b-factor

0.3

EUR

41,177 BBL

R-squared

0.520

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2017-06 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 91 mo
2014-10 — 2017-05 PARSLEY ENERGY OPERATIONS, LLC 32 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2DIAMONDBACK E&P LLC111,3002014-08-06
1DIAMONDBACK E&P LLC111,3002014-04-12