ZIFFLE, ARNOLD

Oil · District 08 · Lease #34793

Operator: COSTILLA PETROLEUM CORPORATION

Cum Oil

16k BBL

Cum Gas

218k MCF

casinghead

Wells

2

Production

1995-12 — 1999-08

Peak Month

1996-10

Production History

Cum Oil: 16,305 BBL Cum Gas: 218,281 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,059 BBL/mo

Di (annual)

469.2%

b-factor

0.2

EUR

9,864 BBL

R-squared

0.831

type

hyperbolic

Operator History (from monthly production reports)

1997-02 — 2000-03 COSTILLA ENERGY, INC. 38 mo
1995-12 — 1997-01 COSTILLA PETROLEUM CORPORATION 14 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1OVINTIV USA INC.59,9502020-11-04
2COSTILLA ENERGY INC.19,0001996-02-06