SURFACE, R. O.

Oil · District 03 · Lease #5622

Operator: TRI-UNION DEVELOPMENT CORP.

Cum Oil

678k BBL

Cum Gas

612k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

2007-02

Production History

Cum Oil: 678,206 BBL Cum Gas: 612,242 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,377 BBL/mo

Di (annual)

8.4%

b-factor

0.0

EUR

476,346 BBL

R-squared

0.399

type

exponential

Operator History (from monthly production reports)

2009-02 — 2026-07 DENBURY ONSHORE, LLC 210 mo
2004-11 — 2009-01 TEXCAL ENERGY (GP) LLC 51 mo
1998-04 — 2004-10 TRI-UNION DEVELOPMENT CORP. 79 mo
1993-01 — 1998-03 MW PETROLEUM CORPORATION 63 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12DENBURY ONSHORE, LLC18,2001980-05-19
1142-039-30038DENBURY ONSHORE, LLC------