SPECK

Oil · District 7C · Lease #13325

Operator: GEOSURVEYS, INC.

Cum Oil

451k BBL

Cum Gas

212k MCF

casinghead

Wells

11

Production

1993-01 — 2026-04

Peak Month

1996-11

Production History

Cum Oil: 451,341 BBL Cum Gas: 211,767 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,260 BBL/mo

Di (annual)

24.1%

b-factor

0.6

EUR

400,591 BBL

R-squared

0.890

type

hyperbolic

Operator History (from monthly production reports)

2018-05 — 2026-07 FELDERHOFF PRODUCTION COMPANY 99 mo
1993-01 — 2018-04 GEOSURVEYS, INC. 304 mo

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10FELDERHOFF PRODUCTION COMPANY11,9002003-09-16
12FELDERHOFF PRODUCTION COMPANY11,4001994-06-03
13FELDERHOFF PRODUCTION COMPANY11,4001994-06-03
9FELDERHOFF PRODUCTION COMPANY11,4001994-06-03
6FELDERHOFF PRODUCTION COMPANY11,5001994-01-27
7FELDERHOFF PRODUCTION COMPANY11,5001994-01-27
8FELDERHOFF PRODUCTION COMPANY11,5001994-01-27
5FELDERHOFF PRODUCTION COMPANY11,5001993-11-09
4FELDERHOFF PRODUCTION COMPANY11,8001993-06-09
2FELDERHOFF PRODUCTION COMPANY11,8001993-02-23
1FELDERHOFF PRODUCTION COMPANY12,0001992-07-14