STALEY-MANGOLD UNIT

Oil · District 09 · Lease #12565

Operator: STEPHENS & JOHNSON OPERATING CO.

Fields: K-M-A

Cum Oil

2.0M BBL

Cum Gas

19 MCF

casinghead

Wells

91

Production

1993-01 — 2026-04

Peak Month

1994-01

Production History

Cum Oil: 1,985,410 BBL Cum Gas: 19 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

10,602 BBL/mo

Di (annual)

7.9%

b-factor

0.6

EUR

2,233,835 BBL

R-squared

0.973

type

hyperbolic

Operator History (from monthly production reports)

1993-09 — 2026-07 STEPHENS & JOHNSON OPERATING CO. 395 mo
1993-01 — 1993-08 S & J OPERATING CO. 8 mo

Wells (91)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
126STEPHENS & JOHNSON OPERATING CO.24,1002024-07-11
127STEPHENS & JOHNSON OPERATING CO.14,0001993-07-19
124STEPHENS & JOHNSON OPERATING CO.14,0001992-05-21
121STEPHENS & JOHNSON OPERATING CO.13,9501984-09-14
122STEPHENS & JOHNSON OPERATING CO.13,9501984-04-30
120STEPHENS & JOHNSON OPERATING CO.14,0001983-09-26
119STEPHENS & JOHNSON OPERATING CO.13,9751983-08-25
118STEPHENS & JOHNSON OPERATING CO.13,9501981-11-05
1042-009-85389STEPHENS & JOHNSON OPERATING CO.------
10042-485-14664STEPHENS & JOHNSON OPERATING CO.------
10142-485-89275STEPHENS & JOHNSON OPERATING CO.------
10242-485-15873STEPHENS & JOHNSON OPERATING CO.------
10342-485-89277STEPHENS & JOHNSON OPERATING CO.------
10642-485-05349STEPHENS & JOHNSON OPERATING CO.------
10742-485-89280STEPHENS & JOHNSON OPERATING CO.------
10842-485-89281STEPHENS & JOHNSON OPERATING CO.------
1142-009-85390STEPHENS & JOHNSON OPERATING CO.------
11042-485-89283STEPHENS & JOHNSON OPERATING CO.------
11142-485-21305STEPHENS & JOHNSON OPERATING CO.------
11242-485-21304STEPHENS & JOHNSON OPERATING CO.------
11342-485-30368STEPHENS & JOHNSON OPERATING CO.------
11442-485-30377STEPHENS & JOHNSON OPERATING CO.------
11542-485-31018STEPHENS & JOHNSON OPERATING CO.------
11642-009-30901STEPHENS & JOHNSON OPERATING CO.------
11742-009-31972STEPHENS & JOHNSON OPERATING CO.------
1242-009-85391STEPHENS & JOHNSON OPERATING CO.------
1342-485-89231STEPHENS & JOHNSON OPERATING CO.------
1642-009-10541STEPHENS & JOHNSON OPERATING CO.------
242-009-85382STEPHENS & JOHNSON OPERATING CO.------
2342-009-85393STEPHENS & JOHNSON OPERATING CO.------
2442-009-85394STEPHENS & JOHNSON OPERATING CO.------
2542-485-89233STEPHENS & JOHNSON OPERATING CO.------
2642-009-85395STEPHENS & JOHNSON OPERATING CO.------
2742-009-10528STEPHENS & JOHNSON OPERATING CO.------
2842-485-89234STEPHENS & JOHNSON OPERATING CO.------
342-009-85383STEPHENS & JOHNSON OPERATING CO.------
3042-485-89235STEPHENS & JOHNSON OPERATING CO.------
3142-009-03215STEPHENS & JOHNSON OPERATING CO.------
3242-009-85398STEPHENS & JOHNSON OPERATING CO.------
3342-009-85399STEPHENS & JOHNSON OPERATING CO.------
3642-009-03219STEPHENS & JOHNSON OPERATING CO.------
3742-009-03218STEPHENS & JOHNSON OPERATING CO.------
3842-009-85402STEPHENS & JOHNSON OPERATING CO.------
3942-485-13809STEPHENS & JOHNSON OPERATING CO.------
442-009-85384STEPHENS & JOHNSON OPERATING CO.------
4042-485-89236STEPHENS & JOHNSON OPERATING CO.------
4242-485-89238STEPHENS & JOHNSON OPERATING CO.------
4342-485-89239STEPHENS & JOHNSON OPERATING CO.------
4442-485-89240STEPHENS & JOHNSON OPERATING CO.------
4542-485-89241STEPHENS & JOHNSON OPERATING CO.------
4642-485-89242STEPHENS & JOHNSON OPERATING CO.------
4742-485-89243STEPHENS & JOHNSON OPERATING CO.------
4942-009-85404STEPHENS & JOHNSON OPERATING CO.------
542-009-85385STEPHENS & JOHNSON OPERATING CO.------
5042-009-10222STEPHENS & JOHNSON OPERATING CO.------
5242-485-15859STEPHENS & JOHNSON OPERATING CO.------
5442-485-89246STEPHENS & JOHNSON OPERATING CO.------
5542-485-89247STEPHENS & JOHNSON OPERATING CO.------
5642-485-89248STEPHENS & JOHNSON OPERATING CO.------
5842-485-89250STEPHENS & JOHNSON OPERATING CO.------
5942-009-03216STEPHENS & JOHNSON OPERATING CO.------
642-009-85386STEPHENS & JOHNSON OPERATING CO.------
6042-009-85407STEPHENS & JOHNSON OPERATING CO.------
6142-009-09423STEPHENS & JOHNSON OPERATING CO.------
6542-485-89252STEPHENS & JOHNSON OPERATING CO.------
6642-485-15747STEPHENS & JOHNSON OPERATING CO.------
6742-485-89254STEPHENS & JOHNSON OPERATING CO.------
6842-485-89255STEPHENS & JOHNSON OPERATING CO.------
6942-485-89256STEPHENS & JOHNSON OPERATING CO.------
7342-009-85409STEPHENS & JOHNSON OPERATING CO.------
7442-485-89257STEPHENS & JOHNSON OPERATING CO.------
7542-485-15867STEPHENS & JOHNSON OPERATING CO.------
7642-485-15866STEPHENS & JOHNSON OPERATING CO.------
7842-485-89261STEPHENS & JOHNSON OPERATING CO.------
7942-485-89262STEPHENS & JOHNSON OPERATING CO.------
842-009-85387STEPHENS & JOHNSON OPERATING CO.------
8142-485-89264STEPHENS & JOHNSON OPERATING CO.------
8242-485-89265STEPHENS & JOHNSON OPERATING CO.------
8342-485-89266STEPHENS & JOHNSON OPERATING CO.------
8442-009-85410STEPHENS & JOHNSON OPERATING CO.------
8542-009-85411STEPHENS & JOHNSON OPERATING CO.------
8642-485-14661STEPHENS & JOHNSON OPERATING CO.------
8742-009-85412STEPHENS & JOHNSON OPERATING CO.------
942-009-85388STEPHENS & JOHNSON OPERATING CO.------
9142-485-89270STEPHENS & JOHNSON OPERATING CO.------
9242-485-89271STEPHENS & JOHNSON OPERATING CO.------
9342-485-89272STEPHENS & JOHNSON OPERATING CO.------
9542-009-85413STEPHENS & JOHNSON OPERATING CO.------
9642-009-85414STEPHENS & JOHNSON OPERATING CO.------
9742-009-85415STEPHENS & JOHNSON OPERATING CO.------
9942-485-89273STEPHENS & JOHNSON OPERATING CO.------