BOYD MALLET UNIT

Oil · District 8A · Lease #18102

Operator: WESTPORT OIL AND GAS COMPANY, LP

Fields: SLAUGHTER

Cum Oil

1.4M BBL

Cum Gas

1.0M MCF

casinghead

Wells

88

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 1,426,923 BBL Cum Gas: 1,041,263 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

8,590 BBL/mo

Di (annual)

6.4%

b-factor

0.0

EUR

1,542,805 BBL

R-squared

0.898

type

exponential

Operator History (from monthly production reports)

2025-10 — 2026-07 EXTEX OPERATING COMPANY 10 mo
2022-01 — 2025-09 NEW HORIZON RESOURCES LLC 45 mo
2020-05 — 2021-12 EXTEX OPERATING COMPANY 20 mo
2019-09 — 2020-04 GRIZZLY OP OF DELAWARE, LLC 8 mo
2015-05 — 2019-08 VANGUARD OPERATING, LLC 52 mo
2012-04 — 2015-04 VANGUARD PERMIAN, LLC 37 mo
2009-09 — 2012-03 ENCORE ENERGY PARTNERS OPER LLC 31 mo
2005-12 — 2009-08 ENCORE OPERATING, L.P. 45 mo
2002-03 — 2005-11 WESTPORT OIL AND GAS COMPANY, LP 45 mo
1998-09 — 2002-02 BELCO ENERGY CORP. 42 mo
1995-01 — 1998-08 CODA ENERGY, INC. 44 mo
1993-01 — 1994-12 MOBIL PRODUCING TX. & N.M. INC. 24 mo

Wells (88)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
98EXTEX OPERATING COMPANY15,4001996-12-13
96EXTEX OPERATING COMPANY15,4001996-12-10
97EXTEX OPERATING COMPANY15,4001996-11-15
95EXTEX OPERATING COMPANY15,3001996-07-22
87EXTEX OPERATING COMPANY15,1501991-02-13
88EXTEX OPERATING COMPANY15,1501991-02-13
89EXTEX OPERATING COMPANY15,1501991-02-13
86EXTEX OPERATING COMPANY312,6001990-09-24
84EXTEX OPERATING COMPANY15,5001977-10-07
85EXTEX OPERATING COMPANY15,5001977-10-07
142-079-01359EXTEX OPERATING COMPANY------
1042-079-01802EXTEX OPERATING COMPANY------
11W42-079-00569EXTEX OPERATING COMPANY------
1242-079-00568EXTEX OPERATING COMPANY------
1342-079-02229EXTEX OPERATING COMPANY------
1442-079-01366EXTEX OPERATING COMPANY------
1542-079-01369EXTEX OPERATING COMPANY------
1642-079-01368EXTEX OPERATING COMPANY------
17W42-079-01360EXTEX OPERATING COMPANY------
1842-079-01361EXTEX OPERATING COMPANY------
19W42-079-00010EXTEX OPERATING COMPANY------
2042-079-01364EXTEX OPERATING COMPANY------
21W42-079-01356EXTEX OPERATING COMPANY------
2242-079-01807EXTEX OPERATING COMPANY------
23W42-079-01803EXTEX OPERATING COMPANY------
24W42-079-01805EXTEX OPERATING COMPANY------
2542-079-01800EXTEX OPERATING COMPANY------
26W42-079-01799EXTEX OPERATING COMPANY------
2742-079-00566EXTEX OPERATING COMPANY------
2842-079-00567EXTEX OPERATING COMPANY------
2942-079-01809EXTEX OPERATING COMPANY------
2W42-079-01358EXTEX OPERATING COMPANY------
342-079-01357EXTEX OPERATING COMPANY------
30W42-079-01810EXTEX OPERATING COMPANY------
32W42-079-00009EXTEX OPERATING COMPANY------
3342-079-01367EXTEX OPERATING COMPANY------
34W42-079-01354EXTEX OPERATING COMPANY------
3542-079-01456EXTEX OPERATING COMPANY------
3642-079-01460EXTEX OPERATING COMPANY------
37W42-079-01451EXTEX OPERATING COMPANY------
3842-079-01798EXTEX OPERATING COMPANY------
39W42-079-01147EXTEX OPERATING COMPANY------
4042-079-02020EXTEX OPERATING COMPANY------
4142-079-01148EXTEX OPERATING COMPANY------
42W42-079-01812EXTEX OPERATING COMPANY------
4342-079-01811EXTEX OPERATING COMPANY------
4442-079-01363EXTEX OPERATING COMPANY------
45W42-079-00288EXTEX OPERATING COMPANY------
4642-079-00008EXTEX OPERATING COMPANY------
47W42-079-00007EXTEX OPERATING COMPANY------
4842-079-01370EXTEX OPERATING COMPANY------
49W42-079-01463EXTEX OPERATING COMPANY------
4W42-079-01365EXTEX OPERATING COMPANY------
542-079-01355EXTEX OPERATING COMPANY------
5042-079-01474EXTEX OPERATING COMPANY------
51W42-079-02131EXTEX OPERATING COMPANY------
5242-079-01192EXTEX OPERATING COMPANY------
5342-079-01813EXTEX OPERATING COMPANY------
54W42-079-02021EXTEX OPERATING COMPANY------
55W42-079-00005EXTEX OPERATING COMPANY------
5742-079-00003EXTEX OPERATING COMPANY------
58W42-079-00006EXTEX OPERATING COMPANY------
5942-079-01471EXTEX OPERATING COMPANY------
60W42-079-01466EXTEX OPERATING COMPANY------
6142-079-01987EXTEX OPERATING COMPANY------
62W42-079-01986EXTEX OPERATING COMPANY------
63W42-079-02333EXTEX OPERATING COMPANY------
6442-079-02335EXTEX OPERATING COMPANY------
66W42-079-01491EXTEX OPERATING COMPANY------
6742-079-01895EXTEX OPERATING COMPANY------
6842-079-01893EXTEX OPERATING COMPANY------
6942-079-02336EXTEX OPERATING COMPANY------
6W42-079-01808EXTEX OPERATING COMPANY------
742-079-01804EXTEX OPERATING COMPANY------
70W42-079-02338EXTEX OPERATING COMPANY------
71W42-079-01894EXTEX OPERATING COMPANY------
72W42-079-02337EXTEX OPERATING COMPANY------
7342-079-10201EXTEX OPERATING COMPANY------
7442-079-10214EXTEX OPERATING COMPANY------
7542-079-10215EXTEX OPERATING COMPANY------
7642-079-10216EXTEX OPERATING COMPANY------
7742-079-10217EXTEX OPERATING COMPANY------
7842-079-30048EXTEX OPERATING COMPANY------
7942-079-30047EXTEX OPERATING COMPANY------
8142-079-30131EXTEX OPERATING COMPANY------
8242-079-30132EXTEX OPERATING COMPANY------
8W42-079-01806EXTEX OPERATING COMPANY------
942-079-01801EXTEX OPERATING COMPANY------