ECHOLS

Oil · District 09 · Lease #21159

Operator: SHERLEY & CUBA

Cum Oil

27k BBL

Cum Gas

0 MCF

Wells

10

Production

1993-01 — 2026-04

Peak Month

2003-03

Production History

Cum Oil: 27,409 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

122 BBL/mo

Di (annual)

4.2%

b-factor

0.0

EUR

30,864 BBL

R-squared

0.435

type

exponential

Operator History (from monthly production reports)

2001-01 — 2026-07 CUBA, JOHN H. 307 mo
1997-01 — 2000-12 SHERLEY & CUBA 48 mo
1993-01 — 1996-12 SCOTT & TATUM 48 mo

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7CUBA, JOHN H.11,5002012-12-13
6CUBA, JOHN H.11,5002008-01-15
2CUBA, JOHN H.21,5001982-07-19
18CUBA, JOHN H.11,4001981-09-09
4CUBA, JOHN H.11,5001981-07-22
17CUBA, JOHN H.11,4001981-07-20
3CUBA, JOHN H.11,5001981-05-07
1CUBA, JOHN H.11,5001981-04-17
1442-009-81501CUBA, JOHN H.------
842-009-81500CUBA, JOHN H.------