EL NEGRO RANCH

Oil · District 04 · Lease #10718

Operator: MADDUX, ELIZABETH H.

Cum Oil

10k BBL

Cum Gas

179k MCF

casinghead

Wells

5

Production

1993-01 — 1997-06

Peak Month

1993-10

Production History

Cum Oil: 10,185 BBL Cum Gas: 178,785 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

470 BBL/mo

Di (annual)

68.1%

b-factor

0.0

EUR

8,261 BBL

R-squared

0.857

type

exponential

Operator History (from monthly production reports)

1995-12 — 1997-08 COATES ENERGY INTERESTS, LTD. 21 mo
1993-01 — 1995-11 MADDUX, ELIZABETH H. 35 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6COATES ENERGY INTERESTS LTD.14,0001987-09-30
5COATES ENERGY INTERESTS LTD.14,0001987-02-09
4COATES ENERGY INTERESTS LTD.14,0001986-10-03
2COATES ENERGY INTERESTS LTD.14,2001985-05-09
1COATES ENERGY INTERESTS LTD.14,2001984-11-27