< leases

RILEY, D.

Oil · District 08 · Lease #33837

Operator: WESTPORT OIL AND GAS COMPANY, LP

Fields: SPRABERRY (TREND AREA)

Cum Oil

132k BBL

Cum Gas

137k MCF

casinghead

Wells

2

Production

1993-05 — 2026-04

Peak Month

2012-05

Production History

Cum Oil: 132,280 BBL Cum Gas: 137,399 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,693 BBL/mo

Di (annual)

83.7%

b-factor

0.6

EUR

85,618 BBL

R-squared

0.858

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2023-05 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 20 mo
2021-06 — 2023-04 PIONEER NATURAL RES. USA, INC. 23 mo
2018-09 — 2021-05 DE3 OPERATING LLC 33 mo
2002-06 — 2018-08 PITTS ENERGY CO. 195 mo
2002-03 — 2002-05 WESTPORT OIL AND GAS COMPANY, LP 3 mo
1998-09 — 2002-02 BELCO ENERGY CORP. 42 mo
1995-10 — 1998-08 CODA ENERGY, INC. 35 mo
1993-05 — 1995-09 SNYDER OIL CORPORATION 29 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-317-36731DIAMONDBACK E&P LLC210,9002011-03-18
142-317-32290DIAMONDBACK E&P LLC211,5001993-04-05