CALVIN, O. -B-

Oil · District 09 · Lease #1338

Operator: YAZELL OIL & GAS

Cum Oil

38k BBL

Cum Gas

54 MCF

casinghead

Wells

24

Production

1993-01 — 2025-05

Peak Month

1997-01

Production History

Cum Oil: 37,888 BBL Cum Gas: 54 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

202 BBL/mo

Di (annual)

8.5%

b-factor

0.0

EUR

28,166 BBL

R-squared

0.419

type

exponential

Operator History (from monthly production reports)

2023-07 — 2026-07 PORTANA PROPERTIES LLC 37 mo
2004-11 — 2023-06 L-R PRODUCTION 224 mo
2002-08 — 2004-10 BEISCH, RUSTY 27 mo
1999-07 — 2002-07 CARLORAN PRODUCTION CORP 37 mo
1994-08 — 1999-06 LEGACY PETROLEUM CORPORATION 59 mo
1993-01 — 1994-07 YAZELL OIL & GAS 19 mo

Wells (24)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
15BPORTANA PROPERTIES LLC11,2002008-10-17
11BPORTANA PROPERTIES LLC11,2001997-01-27
12BPORTANA PROPERTIES LLC11,2001997-01-27
10BPORTANA PROPERTIES LLC11,2001996-09-30
3BPORTANA PROPERTIES LLC11,2001996-05-23
6BPORTANA PROPERTIES LLC11,2001996-05-23
9PORTANA PROPERTIES LLC11,2001981-12-04
7APORTANA PROPERTIES LLC11,2001981-02-19
9APORTANA PROPERTIES LLC11,2001980-09-17
142-009-83840PORTANA PROPERTIES LLC------
1042-009-83838PORTANA PROPERTIES LLC------
1142-009-83839PORTANA PROPERTIES LLC------
1242-009-83827PORTANA PROPERTIES LLC------
1A42-009-83828PORTANA PROPERTIES LLC------
2A42-009-83830PORTANA PROPERTIES LLC------
2B42-009-83829PORTANA PROPERTIES LLC------
342-009-83831PORTANA PROPERTIES LLC------
4A42-009-83832PORTANA PROPERTIES LLC------
542-009-83843PORTANA PROPERTIES LLC------
5A42-009-83833PORTANA PROPERTIES LLC------
642-009-83834PORTANA PROPERTIES LLC------
742-009-83844PORTANA PROPERTIES LLC------
842-009-83845PORTANA PROPERTIES LLC------
8A42-009-83836PORTANA PROPERTIES LLC------