COX, D. A.

Oil · District 09 · Lease #2483

Operator: VASTAR RESOURCES, INC.

Cum Oil

232k BBL

Cum Gas

49k MCF

casinghead

Wells

7

Production

1993-01 — 2026-04

Peak Month

1993-07

Production History

Cum Oil: 231,640 BBL Cum Gas: 48,900 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,796 BBL/mo

Di (annual)

23.1%

b-factor

1.1

EUR

250,826 BBL

R-squared

0.382

type

hyperbolic

Operator History (from monthly production reports)

2021-07 — 2026-07 SYDRI OPERATING, LLC 61 mo
2020-12 — 2021-06 TEAM OPERATING, L.L.C. 7 mo
2013-01 — 2020-11 MERIT ENERGY COMPANY 95 mo
2006-05 — 2012-12 CIMAREX ENERGY CO. OF COLORADO 80 mo
1999-06 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 83 mo
1994-03 — 1999-05 VASTAR RESOURCES, INC. 63 mo
1993-01 — 1994-02 ARCO OIL & GAS CO. 14 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
33SYDRI OPERATING, LLC35,5022022-07-21
8SYDRI OPERATING, LLC34,9062010-08-31
35 USYDRI OPERATING, LLC15,5502007-07-06
A 62SYDRI OPERATING, LLC35,6501991-03-14
25SYDRI OPERATING, LLC25,5321982-05-19
242-097-82330SYDRI OPERATING, LLC------
2242-097-82331SYDRI OPERATING, LLC------