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LANGLEY UNIT

Oil · District 06 · Lease #12341

Operator: S.E.D.I.

Fields: TEXARKANA, WEST (SMACKOVER)

Cum Oil

487k BBL

Cum Gas

183k MCF

casinghead

Wells

2

Production

1993-01 — 2026-03

Peak Month

1993-03

Production History

Cum Oil: 486,964 BBL Cum Gas: 183,174 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,608 BBL/mo

Di (annual)

9.5%

b-factor

0.0

EUR

325,316 BBL

R-squared

0.541

type

exponential

Operator History (from monthly production reports)

2015-10 — 2026-07 NECHES OIL & GAS COMPANY, INC. 130 mo
2015-05 — 2015-09 DALLAS PETROLEUM GROUP, LLC 5 mo
2003-11 — 2015-04 S.E.D.I. 138 mo
1996-09 — 2003-10 MERIT ENERGY COMPANY 86 mo
1993-02 — 1996-08 MURPHY EXPLORATION & PROD. CO. 43 mo
1993-01 — 1993-01 MURPHY OIL USA, INC. 1 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2ST42-037-30319NECHES OIL & GAS COMPANY, INC.28,5002007-05-17
142-037-30260NECHES OIL & GAS COMPANY, INC.28,0001987-12-28