< leases

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

Oil · District 7C · Lease #5917

Operator: VANGUARD PERMIAN, LLC

Fields: FORT CHADBOURNE, WEST

Cum Oil

218k BBL

Cum Gas

175k MCF

casinghead

Wells

8

Production

1993-01 — 2016-09

Peak Month

1996-10

Production History

Cum Oil: 217,830 BBL Cum Gas: 175,444 MCF

RRC production reported through Apr 2026 · recent months incomplete

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

Operator History (from monthly production reports)

2015-05 — 2018-05 VANGUARD OPERATING, LLC 37 mo
2011-08 — 2015-04 VANGUARD PERMIAN, LLC 45 mo
2006-08 — 2011-07 ENERVEST OPERATING, L.L.C. 60 mo
2003-11 — 2006-07 MAK-J ENERGY PARTNERS(TX),LTD. 33 mo
2001-10 — 2003-10 ST. MARY ENERGY COMPANY 25 mo
1993-03 — 2001-09 PITTENCRIEFF AMERICA, INC. 103 mo
1993-01 — 1993-02 EXXON CORP. 2 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2542-081-31630VANGUARD OPERATING, LLC56,0002024-04-26
1942-081-31361VANGUARD OPERATING, LLC65,7002024-04-19
542-081-00440VANGUARD OPERATING LLC15,4002008-02-20
3342-081-31743VANGUARD OPERATING LLC25,9001997-05-30
2142-081-31445PITTENCRIEFF AMERICA INC.25,8001996-10-22
2742-081-31725VANGUARD OPERATING LLC16,0001996-10-22
17W42-081-01475VANGUARD OPERATING LLC------
1D42-081-00495VANGUARD OPERATING LLC------