CHALK, OTIS

Oil · District 08 · Lease #2792

Operator: UNION OIL COMPANY OF CALIFORNIA

Cum Oil

410k BBL

Cum Gas

226k MCF

casinghead

Wells

50

Production

1993-01 — 2011-11

Peak Month

1993-04

Production History

Cum Oil: 410,123 BBL Cum Gas: 226,240 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,801 BBL/mo

Di (annual)

6.4%

b-factor

0.0

EUR

506,290 BBL

R-squared

0.426

type

exponential

Operator History (from monthly production reports)

2014-02 — 2014-02 TRADITION RESOURCES OPER, LLC 1 mo
2011-01 — 2014-01 TRADITION RESOURCES LLC 37 mo
2006-04 — 2010-12 CHEVRON MIDCONTINENT, L.P. 57 mo
2000-06 — 2006-03 PURE RESOURCES, L.P. 70 mo
1993-01 — 2000-05 UNION OIL COMPANY OF CALIFORNIA 89 mo

Wells (50)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12UNITEX OIL & GAS, L.L.C.12,3752008-10-17
22RUNITEX OIL & GAS, L.L.C.22,4332008-10-17
34UNITEX OIL & GAS, L.L.C.15,2001998-09-17
34WSUNITEX OIL & GAS, L.L.C.15,2001998-09-17
21UNITEX OIL & GAS, L.L.C.12,6001994-10-18
U 11WRUNITEX OIL & GAS, L.L.C.13,2501993-06-25
U 9WRUNITEX OIL & GAS, L.L.C.13,2501993-06-25
14UNITEX OIL & GAS, L.L.C.12,4001993-05-24
14WUNITEX OIL & GAS, L.L.C.12,4001993-05-24
9WUNITEX OIL & GAS, L.L.C.12,4001993-05-24
9WUUNITEX OIL & GAS, L.L.C.12,4001993-05-24
41UNITEX OIL & GAS, L.L.C.12,3751992-09-22
43UNITEX OIL & GAS, L.L.C.13,2001992-09-22
44UNITEX OIL & GAS, L.L.C.13,2001992-09-22
6RUNITEX OIL & GAS, L.L.C.13,2001992-09-22
39UNITEX OIL & GAS, L.L.C.13,1001984-11-19
13W42-227-02708UNITEX OIL & GAS, L.L.C.------
1542-227-02710TRADITION RESOURCES OPER LLC------
1842-227-02713UNITEX OIL & GAS, L.L.C.------
1W42-227-30296TRADITION RESOURCES LLC------
242-227-02700TRADITION RESOURCES OPER LLC------
220242-227-10173TRADITION RESOURCES LLC------
220342-227-10173TRADITION RESOURCES LLC------
230242-227-10174TRADITION RESOURCES LLC------
230342-227-10174TRADITION RESOURCES LLC------
250242-227-10176TRADITION RESOURCES LLC------
250342-227-10176TRADITION RESOURCES LLC------
260242-227-10177TRADITION RESOURCES OPER LLC------
260342-227-10177TRADITION RESOURCES OPER LLC------
27 L42-227-10819TRADITION RESOURCES OPER LLC------
27 U42-227-10819TRADITION RESOURCES OPER LLC------
28 L42-227-10871TRADITION RESOURCES OPER LLC------
28 U42-227-10871TRADITION RESOURCES OPER LLC------
2W42-227-30358UNITEX OIL & GAS, L.L.C.------
342-227-02701TRADITION RESOURCES OPER LLC------
30LW42-227-10872TRADITION RESOURCES OPER LLC------
32 L42-227-10820TRADITION RESOURCES OPER LLC------
32 U42-227-10820TRADITION RESOURCES OPER LLC------
3342-227-30386UNITEX OIL & GAS, L.L.C.------
3542-227-30493TRADITION RESOURCES OPER LLC------
3642-227-30589UNITEX OIL & GAS, L.L.C.------
3742-227-30588UNITEX OIL & GAS, L.L.C.------
3842-227-30815UNITEX OIL & GAS, L.L.C.------
3W42-227-30307TRADITION RESOURCES OPER LLC------
442-227-02702UNITEX OIL & GAS, L.L.C.------
4W42-227-30308UNITEX OIL & GAS, L.L.C.------
5W42-227-30309UNITEX OIL & GAS, L.L.C.------
6W42-227-30310UNITEX OIL & GAS, L.L.C.------
7W42-227-30295UNITEX OIL & GAS, L.L.C.------
8W42-227-30340TRADITION RESOURCES LLC------