QUINTANILLA NO. 6

Oil // district 1 // lease#14225

op: WELHAUSEN OPERATING COMPANY, LP

cum_oil

80k BBL

cum_gas

0 MCF

wells

2

production

1998-09 — 2026-03

peak_month

2014-12

-- production_history

cum_oil: 79,691 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

296 BBL/mo

Di (annual)

13.9%

b-factor

0.0

EUR

25,537 BBL

R-squared

0.334

type

exponential

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7WAPITI OPERATING, LLC111,5002014-03-08
6PENTAD DEVELOPMENT CORP. (A)19,9001985-12-30
EOF // data source: Texas Railroad Commission // 2026