COVINGTON, ELLA "B"

Oil · District 8A · Lease #65611

Operator: XTO ENERGY INC.

Cum Oil

243k BBL

Cum Gas

24k MCF

casinghead

Wells

1

Production

1993-01 — 2019-04

Peak Month

2011-07

Production History

Cum Oil: 243,139 BBL Cum Gas: 24,497 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,613 BBL/mo

Di (annual)

59.2%

b-factor

0.5

EUR

137,258 BBL

R-squared

0.861

type

hyperbolic

Operator History (from monthly production reports)

2001-06 — 2020-02 XTO ENERGY INC. 225 mo
1994-01 — 2001-05 CROSS TIMBERS OPERATING COMPANY 89 mo
1993-01 — 1993-12 AMOCO PRODUCTION COMPANY 12 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
17HIGHMARK ENERGY OPERATING, LLC28,6002019-08-15