SANFORD, J. M. "E"

Oil · District 10 · Lease #4570

Operator: TOPPER OIL COMPANY

Cum Oil

48k BBL

Cum Gas

833k MCF

casinghead

Wells

9

Production

1993-01 — 2026-04

Peak Month

1993-07

Production History

Cum Oil: 47,823 BBL Cum Gas: 833,340 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

354 BBL/mo

Di (annual)

17.8%

b-factor

0.4

EUR

35,634 BBL

R-squared

0.842

type

hyperbolic

Operator History (from monthly production reports)

1994-07 — 2026-07 TOPPER OIL COMPANY 385 mo
1993-01 — 1994-06 BLADE OIL CO. 18 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
32TOPPER OIL COMPANY13,2501981-04-10
20TOPPER OIL COMPANY13,2501980-10-08
23TOPPER OIL COMPANY13,2001980-08-21
25TOPPER OIL COMPANY13,2501980-08-08
21TOPPER OIL COMPANY13,2501980-07-29
8TOPPER OIL COMPANY13,2501980-07-29
16TOPPER OIL COMPANY13,6001980-03-31
24TOPPER OIL COMPANY13,6001980-03-31
1TOPPER OIL COMPANY13,2001979-11-30