WILLIAMS, MAUDE, ETAL -A-

Oil // district 2 // lease#820

op: QUINTANA PET. CORP.

cum_oil

463k BBL

cum_gas

0 MCF

wells

15

production

1993-01 — 2026-03

peak_month

1993-03

-- production_history

cum_oil: 462,821 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

3,727 BBL/mo

Di (annual)

18.5%

b-factor

0.5

EUR

397,848 BBL

R-squared

0.744

type

hyperbolic

-- wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
D 3QUINTANA PET. CORP.25,9672024-12-09
D 22QUINTANA PET. CORP.36,2002023-01-09
D 88QUINTANA PET. CORP.158,0002022-08-19
D 21 LHILCORP ENERGY COMPANY66,2002022-04-27
D131QUINTANA PET. CORP.66,1002017-06-29
D 12QUINTANA PET. CORP.75,7602017-04-24
D 12AQUINTANA PET. CORP.75,7602017-04-24
D 16HILCORP ENERGY COMPANY35,9802017-04-24
D 9QUINTANA PET. CORP.65,7632017-04-21
D201RHILCORP ENERGY COMPANY68,2502017-03-15
D 5QUINTANA PET. CORP.85,7642015-08-19
D196HILCORP ENERGY COMPANY56,5002012-09-06
D 3GQUINTANA PET. CORP.76,1062010-05-26
D 72QUINTANA PET. CORP.67,7582008-03-06
D 77QUINTANA PET. CORP.57,1472006-12-15
EOF // data source: Texas Railroad Commission // 2026