WILLIAMS, MAUDE, ETAL -A-

Oil // district 2 // lease#2527

op: QUINTANA PET. CORP.

cum_oil

379k BBL

cum_gas

0 MCF

wells

12

production

1993-01 — 2026-03

peak_month

1993-06

-- production_history

cum_oil: 378,653 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

7,831 BBL/mo

Di (annual)

46.6%

b-factor

0.4

EUR

325,854 BBL

R-squared

0.919

type

hyperbolic

-- wells (12)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
D 49 UHILCORP ENERGY COMPANY25,7502024-10-14
D 4QUINTANA PET. CORP.75,7662024-01-31
D 4 UQUINTANA PET. CORP.75,7662024-01-31
D158QUINTANA PET. CORP.66,0002023-02-01
D 87HILCORP ENERGY COMPANY75,8602022-06-21
D 87AHILCORP ENERGY COMPANY75,8602022-06-21
D 87 UHILCORP ENERGY COMPANY75,8602022-06-21
D148QUINTANA PET. CORP.146,1002016-01-06
D 23 UQUINTANA PET. CORP.46,2002016-01-06
D 57QUINTANA PET. CORP.65,6002008-05-07
D 77QUINTANA PET. CORP.57,1472006-12-15
D103 DQUINTANA PET. CORP.75,9042002-06-13
EOF // data source: Texas Railroad Commission // 2026