O'BRIEN "A"

Operated by CHAP OPERATING, INC. (P-5 144416) in the OBRIEN, WEST (STRAWN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 25599District 7BField 66641500OilCasinghead gasSaveExport
Value, all time
$1.3 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The Railroad Commission's own record for the field this lease produces from, including the spacing rule that governs how close together its wells may be drilled.

These are facts about the field, not about this lease. The field holds 5 leases and 22 wells, and the rule below applies to all of them.

Discovered
1954-03-10
as the register files it
Field class
Oil
the register's own label
Between wells
933 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 40 acres.

What this lease produced, and what it was worth

Oil and condensate are valued on the volume the state records as disposed of; gas and casinghead gas on the volume produced. They are different columns of different files, and the difference is not cosmetic.

StreamBasisVolumeValue
OilDisposition29,396 bbl$1,296,274
Casinghead gasProduction35 Mcf$0
Total$1,296,274

35 Mcf of this lease's gas, across 35 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.

Wells on this lease (1)

Every wellbore the Railroad Commission records against this lease key, with the depth, the last completion and the plug date exactly as filed. A well with no plug date is not stated to be producing — the state files no such flag.

These wells centre on 33.3803, -99.8504. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

33.38030, -99.85035 · centre of the wells drawn, derived

What these wells add up to

Every figure below is counted over all of this lease's wells, not over the rows listed above. The Railroad Commission files two facts about a well's state — a plug date and a proration-schedule flag — and a well can carry both, so they are published as separate counts and never merged into a status.

On the schedule
0.0%
0 of 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
no depth filed
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
1100.0%

A plug date is the date the Commission recorded the wellbore as sealed with cement and abandoned. It is the only end-of-life fact Texas files. There is no "active" flag on a well, so this page does not print one — a well with no plug date is not stated to be producing.

1 well

42-207805501401

The API number is the state's, prefixed 42 for Texas. A well is matched to this lease by the lease key the Commission files on the wellbore record, so a well that has moved between leases appears under each one it was filed against.

Every month this lease reported (401)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

401 months

May 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 2025107060.553.23$6,479
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 2023104071.262.61$7,411
Nov 20230077.892.81$0
Oct 2023111085.443.09$9,484
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 2023109074.852.64$8,159
Jun 20230068.962.26$0
May 2023114070.622.23$8,051
Apr 20230078.122.24$0
Mar 2023108072.852.39$7,868
Feb 20230075.112.47$0
Jan 2023100076.533.39$7,653
Dec 20220076.415.73$0
Nov 202299085.005.65$8,415
Oct 20220087.185.86$0
Sep 202288084.888.16$7,469
Aug 20220094.529.13$0
Jul 20221030101.587.54$10,463
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 2022980104.226.84$10,214
Mar 202200108.885.08$0
Feb 202287091.054.86$7,921
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 202198079.795.71$7,819
Sep 20210069.865.35$0
Aug 202196066.024.22$6,338
Jul 20210070.783.98$0
Jun 2021103069.493.38$7,157
May 20210063.483.02$0
Apr 2021103060.362.76$6,217
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 202194050.412.81$4,739
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 202096036.972.48$3,549
Sep 20200037.091.99$0
Aug 202095039.982.39$3,798
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 202088014.751.80$1,298
Mar 20200030.341.86$0
Feb 202096049.881.98$4,788
Jan 20200057.252.09$0
Dec 2019117059.012.30$6,904
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 2019102055.052.66$5,615
Aug 20190053.112.30$0
Jul 201996056.272.46$5,402
Jun 20190052.782.49$0
May 201995058.482.74$5,556
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 2019100050.852.79$5,085
Jan 20190046.033.23$0
Dec 2018104046.594.19$4,845
Nov 20180052.934.24$0
Oct 201898061.443.40$6,021
Sep 20180059.543.11$0
Aug 2018103059.403.07$6,118
Jul 20180065.142.93$0
Jun 201898060.183.08$5,898
May 20180065.382.90$0
Apr 2018105063.842.90$6,703
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 2018104062.874.01$6,538
Dec 20170057.272.92$0
Nov 2017103055.423.12$5,708
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 2017103045.373.00$4,673
Jul 20170043.873.09$0
Jun 201796042.493.09$4,079
May 20170045.373.26$0
Apr 2017103047.933.21$4,937
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 2017105049.413.42$5,188
Dec 20160048.763.72$0
Nov 2016104042.492.64$4,419
Oct 20160046.193.09$0
Sep 2016108041.553.10$4,487
Aug 20160041.442.92$0
Jul 201660041.622.92$2,497
Jun 20160045.352.69$0
May 2016109042.521.99$4,635
Apr 20160036.561.99$0
Mar 2016111033.011.79$3,664
Feb 20160026.472.06$0
Jan 2016104027.352.36$2,844
Dec 20150032.362.00$0
Nov 2015111038.792.17$4,306
Oct 20150043.552.43$0
Sep 2015109042.992.76$4,686
Aug 20150040.162.87$0
Jul 2015103048.152.95$4,959
Jun 20150056.152.88$0
May 2015104055.212.96$5,742
Apr 2015107049.822.71$5,331
Mar 20150042.892.93$0
Feb 2015110044.662.98$4,913
Jan 20150043.433.10$0
Dec 201497054.693.59$5,305
Nov 20140070.464.25$0
Oct 2014105078.303.90$8,222
Sep 20140086.164.05$0
Aug 201497089.394.04$8,671
Jul 2014109096.564.18$10,525
Jun 20140098.164.74$0
May 2014115094.734.73$10,894
Apr 2014107095.944.81$10,266
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 2014107090.404.86$9,673
Dec 201399091.824.35$9,090
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 20131050104.113.72$10,932
Aug 2013840104.253.52$8,757
Jul 201300102.523.72$0
Jun 2013105094.403.93$9,912
May 2013104094.834.15$9,862
Apr 20130093.964.28$0
Mar 2013108093.623.91$10,111
Feb 2013110091.233.42$10,035
Jan 2013100091.603.42$9,160
Dec 20120086.773.42$0
Nov 2012106086.953.62$9,217
Oct 20120089.383.40$0
Sep 2012105094.672.92$9,940
Aug 2012104092.662.91$9,637
Jul 20120085.133.02$0
Jun 2012115079.822.52$9,179
May 2012115091.612.49$10,535
Apr 201200101.652.00$0
Mar 20121130105.052.22$11,871
Feb 201200101.102.57$0
Jan 2012104098.092.73$10,201
Dec 2011117096.873.24$11,334
Nov 20110095.723.31$0
Oct 2011102084.983.65$8,668
Sep 2011113083.623.99$9,449
Aug 2011115083.404.15$9,591
Jul 20110094.144.52$0
Jun 2011112092.904.64$10,405
May 20110098.134.40$0
Apr 20111080105.964.33$11,444
Mar 2011111096.364.06$10,696
Feb 20110085.644.18$0
Jan 2011109086.504.59$9,429
Dec 2010103085.734.35$8,830
Nov 20100080.843.80$0
Oct 2010117078.103.51$9,138
Sep 20100072.633.98$0
Aug 2010113073.684.42$8,326
Jul 20100072.554.74$0
Jun 2010114070.364.91$8,021
May 2010113071.124.24$8,037
Apr 20100081.694.12$0
Mar 2010111078.394.39$8,701
Feb 20100073.585.44$0
Jan 201097074.365.96$7,213
Dec 2009112071.445.48$8,001
Nov 20090074.593.75$0
Oct 2009116072.544.11$8,415
Sep 2009108065.543.06$7,078
Aug 20090067.423.22$0
Jul 2009117061.133.46$7,152
Jun 2009110066.163.90$7,278
May 20090054.743.93$0
Apr 2009104046.773.59$4,864
Mar 2009114042.144.06$4,804
Feb 20090032.814.63$0
Jan 2009107035.865.37$3,837
Dec 2008110037.105.98$4,081
Nov 20080055.496.86$0
Oct 2008108075.246.92$8,126
Sep 20081110101.767.88$11,295
Aug 20081120114.228.48$12,793
Jul 200800131.0811.39$0
Jun 20081120131.3313.03$14,709
May 20081090123.1711.57$13,426
Apr 20081090110.3110.45$12,024
Mar 20081040101.909.66$10,598
Feb 20080092.538.77$0
Jan 2008100090.388.21$9,038
Dec 2007110088.337.30$9,716
Nov 200799091.677.29$9,075
Oct 20070082.856.92$0
Sep 2007107075.846.24$8,115
Aug 2007110069.066.39$7,597
Jul 20070070.906.39$0
Jun 2007107062.007.55$6,634
May 2007102058.747.85$5,991
Apr 2007108059.617.81$6,438
Mar 2007208056.927.30$11,839
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 2006102056.656.92$5,778
Nov 2006112054.207.62$6,070
Oct 2006113054.906.01$6,204
Sep 2006116060.085.04$6,969
Aug 200696068.717.34$6,596
Jul 20060069.376.34$0
Jun 2006112066.286.38$7,423
May 2006107066.016.42$7,063
Apr 2006109064.397.36$7,019
Mar 2006109056.707.08$6,180
Feb 2006116057.597.75$6,680
Jan 2006111060.598.93$6,725
Dec 20050054.9413.42$0
Nov 2005116054.6910.59$6,344
Oct 2005110058.3413.80$6,417
Sep 2005110061.4512.08$6,760
Aug 20050061.519.80$0
Jul 2005111055.697.84$6,182
Jun 2005103052.337.38$5,390
May 200598045.226.65$4,432
Apr 2005109049.207.36$5,363
Mar 2005117050.377.15$5,893
Feb 2005114045.226.31$5,155
Jan 2005112043.166.32$4,834
Dec 2004107039.866.75$4,265
Nov 2004107045.286.33$4,845
Oct 2004101049.706.52$5,020
Sep 20040043.245.28$0
Aug 2004198042.375.55$8,389
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 200491037.486.49$3,411
Apr 200484034.475.86$2,895
Mar 200498034.365.53$3,367
Feb 2004108032.455.51$3,505
Jan 2004108032.036.30$3,459
Dec 2003111030.266.30$3,359
Nov 2003112028.804.60$3,226
Oct 20030028.174.76$0
Sep 2003111026.314.75$2,920
Aug 2003112029.765.13$3,333
Jul 20030029.415.17$0
Jun 2003114028.565.98$3,256
May 2003114026.595.97$3,031
Apr 2003110026.675.41$2,934
Mar 2003113031.146.10$3,519
Feb 2003112033.487.93$3,750
Jan 20030030.315.58$0
Dec 2002116026.914.85$3,122
Nov 2002111024.664.14$2,737
Oct 20020026.464.23$0
Sep 2002112027.443.64$3,073
Aug 2002104025.963.16$2,700
Jul 20020024.583.06$0
Jun 200293023.733.34$2,207
May 2002107024.663.58$2,639
Apr 2002107023.653.51$2,531
Mar 20020022.003.10$0
Feb 2002108018.222.38$1,968
Jan 2002110017.172.38$1,889
Dec 200163016.932.36$1,067
Nov 20010018.072.41$0
Oct 2001112019.782.53$2,215
Sep 2001117024.262.25$2,838
Aug 20010024.873.05$0
Jul 2001100023.933.20$2,393
Jun 2001109024.563.82$2,677
May 2001101025.524.31$2,578
Apr 20010024.685.34$0
Mar 200187024.545.38$2,135
Feb 2001115027.755.77$3,191
Jan 2001113027.478.40$3,104
Dec 2000102026.889.12$2,742
Nov 20000032.215.66$0
Oct 2000108031.235.15$3,373
Sep 2000113031.875.19$3,601
Aug 2000112029.644.54$3,320
Jul 2000112028.534.09$3,195
Jun 20000029.304.40$0
May 2000112027.263.68$3,053
Apr 2000114024.513.12$2,794
Mar 2000112028.422.86$3,183
Feb 2000114027.622.73$3,149
Jan 2000114025.272.48$2,881
Dec 1999119024.282.42$2,889
Nov 1999117023.192.43$2,713
Oct 1999112020.982.80$2,350
Sep 1999109021.752.62$2,371
Aug 1999109019.262.88$2,099
Jul 19990017.892.37$0
Jun 1999111015.942.36$1,769
May 1999108015.792.32$1,705
Apr 1999218015.102.21$3,292
Mar 1999111012.471.84$1,384
Feb 199910509.981.82$1,048
Jan 1999108010.381.90$1,121
Dec 199811509.201.77$1,058
Nov 1998108010.892.19$1,176
Oct 1998216012.421.97$2,683
Sep 19980012.592.08$0
Aug 1998105011.301.91$1,187
Jul 1998216011.742.24$2,536
Jun 19980011.242.24$0
May 1998203012.622.21$2,562
Apr 1998105013.042.51$1,369
Mar 1998103012.802.31$1,318
Feb 1998104013.952.30$1,451
Jan 1998215014.702.15$3,161
Dec 19970016.322.41$0
Nov 1997112018.193.09$2,037
Oct 1997111019.253.15$2,137
Sep 1997112017.742.95$1,987
Aug 1997221017.862.55$3,947
Jul 1997120017.582.25$2,110
Jun 19970017.242.26$0
May 199759018.972.31$1,119
Apr 199757017.882.08$1,019
Mar 1997112018.951.94$2,122
Feb 1997111020.492.21$2,274
Jan 1997223023.483.54$5,236
Dec 1996116023.32$2,705
Nov 199662021.97$1,362
Oct 1996115023.31$2,681
Sep 1996114022.22$2,533
Aug 1996114020.26$2,310
Jul 1996117019.55$2,287
Jun 1996114018.73$2,135
May 1996111019.43$2,157
Apr 1996120021.51$2,581
Mar 1996116019.38$2,248
Feb 1996227016.98$3,854
Jan 19960017.07$0
Dec 1995233017.19$4,005
Nov 1995116116.00$1,856
Oct 1995112115.43$1,728
Sep 19950116.18$0
Aug 1995111115.92$1,767
Jul 1995223115.24$3,399
Jun 1995109116.41$1,789
May 1995113117.56$1,984
Apr 1995113117.73$2,003
Mar 1995109116.44$1,792
Feb 1995218116.58$3,614
Jan 1995115115.92$1,831
Dec 1994108115.03$1,623
Nov 1994114115.90$1,813
Oct 1994111115.58$1,729
Sep 1994115115.29$1,758
Aug 1994113116.13$1,823
Jul 1994113117.56$1,984
Jun 1994228117.09$3,897
May 19940115.88$0
Apr 1994112114.14$1,584
Mar 1994226112.46$2,816
Feb 1994116112.50$1,450
Jan 1994116112.66$1,469
Dec 1993226112.33$2,787
Nov 1993116114.49$1,681
Oct 1993110115.85$1,744
Sep 1993105115.03$1,578
Aug 1993119115.66$1,864
Jul 1993202115.46$3,123
Jun 1993110116.79$1,847
May 1993220117.68$3,890
Apr 1993111118.05$2,004
Mar 1993195118.14$3,537
Feb 1993218117.90$3,902
Jan 1993175116.93$2,963

How to read this page

The arithmetic is one multiplication per stream per month. Here it is, worked, on a real row from the table above.

May 2025 — as filed, then multipliedworked
Oil                  107 bbl  × $ 60.55 =     $6,479
Casinghead gas         0 Mcf  × $  3.23 =         $0

────────────────────────────────────────────────────
Month total                                   $6,479

The volumes are the state's, unchanged

Every barrel and every Mcf on this page is a number the Railroad Commission of Texas published in its monthly production query. Nothing is modelled, estimated or filled in.

The dollars are a multiplication, not a valuation

Volume × a published monthly price. It is not what the operator was paid: it takes no account of a contract, a differential, a transportation deduction, or the share any one owner holds.

Oil and gas are priced differently

Oil is a Texas realisation — the crude oil first purchase price. Gas is a benchmark, because no free Texas wellhead gas series exists at any date. The prices page publishes the difference rather than correcting it away.

A lease is not a well

The state reports oil on lease and gas on well, and this page is the lease grain. 7B/O/25599 is the state's own key, not one this site invented.