PEGASUS SAN ANDRES ROYALTY UNIT

Oil · District 7C · Lease #5637

Operator: MOBIL PRODUCING TX. & N.M. INC.

Cum Oil

1.0M BBL

Cum Gas

154k MCF

casinghead

Wells

24

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 1,028,390 BBL Cum Gas: 154,440 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,703 BBL/mo

Di (annual)

16.1%

b-factor

0.6

EUR

606,449 BBL

R-squared

0.915

type

hyperbolic

Operator History (from monthly production reports)

2009-01 — 2026-07 COG OPERATING LLC 211 mo
2001-04 — 2008-12 HENRY PETROLEUM LP 93 mo
1998-04 — 2001-03 HENRY PETROLEUM CORP. 36 mo
1993-01 — 1998-03 MOBIL PRODUCING TX. & N.M. INC. 63 mo

Wells (24)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
30COG OPERATING LLC16,0002004-07-19
18COG OPERATING LLC110,1001994-07-07
28COG OPERATING LLC15,8001990-01-31
29COG OPERATING LLC15,8001990-01-31
27COG OPERATING LLC25,6601977-06-30
142-329-01033COG OPERATING LLC------
11W42-329-01013COG OPERATING LLC------
1342-329-01011COG OPERATING LLC------
1542-329-00898COG OPERATING LLC------
1642-329-00996COG OPERATING LLC------
1742-329-01005COG OPERATING LLC------
1942-329-30025COG OPERATING LLC------
2142-329-30120COG OPERATING LLC------
2242-329-30119COG OPERATING LLC------
2342-329-30118COG OPERATING LLC------
24W42-329-30133COG OPERATING LLC------
2W42-329-01016COG OPERATING LLC------
342-329-01020COG OPERATING LLC------
442-329-01017COG OPERATING LLC------
542-329-01010COG OPERATING LLC------
642-329-01014COG OPERATING LLC------
742-329-01012COG OPERATING LLC------
8W42-329-01019COG OPERATING LLC------
9W42-329-01018COG OPERATING LLC------