WILLIAMS, MAUDE, ETAL -A-

Oil · District 02 · Lease #820

Operator: QUINTANA PET. CORP.

Cum Oil

466k BBL

Cum Gas

1.3M MCF

casinghead

Wells

15

Production

1993-01 — 2026-04

Peak Month

2004-11

Production History

Cum Oil: 465,764 BBL Cum Gas: 1,270,472 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,433 BBL/mo

Di (annual)

25.4%

b-factor

0.6

EUR

398,588 BBL

R-squared

0.730

type

hyperbolic

Operator History (from monthly production reports)

2000-12 — 2026-07 HILCORP ENERGY COMPANY 308 mo
1993-01 — 2000-11 QUINTANA PET. CORP. 95 mo

Wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
D 3HILCORP ENERGY COMPANY25,9672024-12-09
D 22HILCORP ENERGY COMPANY36,2002023-01-09
D 88HILCORP ENERGY COMPANY158,0002022-08-19
D 21 LHILCORP ENERGY COMPANY66,2002022-04-27
D131HILCORP ENERGY COMPANY66,1002017-06-29
D 12HILCORP ENERGY COMPANY75,7602017-04-24
D 12AHILCORP ENERGY COMPANY75,7602017-04-24
D 16HILCORP ENERGY COMPANY35,9802017-04-24
D 9HILCORP ENERGY COMPANY65,7632017-04-21
D201RHILCORP ENERGY COMPANY68,2502017-03-15
D 5HILCORP ENERGY COMPANY85,7642015-08-19
D196HILCORP ENERGY COMPANY56,5002012-09-06
D 3GHILCORP ENERGY COMPANY76,1062010-05-26
D 72HILCORP ENERGY COMPANY67,7582008-03-06
D 77HILCORP ENERGY COMPANY57,1472006-12-15