EL CID "B"

Oil · District 01 · Lease #5393

Operator: SANCHEZ-O'BRIEN OIL & GAS CORP.

Cum Oil

18k BBL

Cum Gas

15k MCF

casinghead

Wells

2

Production

1993-01 — 2000-02

Peak Month

1998-06

Production History

Cum Oil: 18,288 BBL Cum Gas: 15,084 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,590 BBL/mo

Di (annual)

753.0%

b-factor

0.4

EUR

4,255 BBL

R-squared

0.555

type

hyperbolic

Operator History (from monthly production reports)

1994-11 — 2001-12 FIRST ROCK, INC. 86 mo
1993-01 — 1994-10 SANCHEZ-O'BRIEN OIL & GAS CORP. 22 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7FIRST ROCK INC.39,0001998-05-01
3FIRST ROCK INC.17,3001977-07-20