CHADBOURNE, W. FT. /GRAY SD./UN.

Oil // district 9 // lease#5917

op: VANGUARD PERMIAN, LLC

cum_oil

218k BBL

cum_gas

0 MCF

wells

8

production

1993-01 — 2018-05

peak_month

1996-10

-- production_history

cum_oil: 217,830 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,551 BBL/mo

Di (annual)

313.1%

b-factor

0.7

EUR

105,984 BBL

R-squared

0.720

type

hyperbolic

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
25PITTENCRIEFF AMERICA, INC.56,0002024-04-26
19PITTENCRIEFF AMERICA, INC.65,7002024-04-19
5ENERVEST OPERATING, L.L.C.15,4002008-02-20
33PITTENCRIEFF AMERICA, INC.25,9001997-05-30
21PITTENCRIEFF AMERICA, INC.25,8001996-10-22
27PITTENCRIEFF AMERICA, INC.16,0001996-10-22
17W42-081-01475--------
1D42-081-00495--------
EOF // data source: Texas Railroad Commission // 2026