OCONNOR, THOMAS -B-

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the MARY ELLEN OCONNOR (FQ-35 SD.) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 957District 02Field 57911286OilCasinghead gasSaveExport
Value, all time
$1.1 M
Jan 1993 – Jan 2022
Value, last 12 filed months
$0
at the published price for each month
Months reported
349
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 1 leases and 4 wells, and the rule below applies to all of them.

Discovered
1955-04-16
as the register files it
Field class
Oil
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres.

The Commission's schedule remark for this field reads: 150 FT. MINIMUM BETWEEN WELLS IRRESPECTIVE OF RESERVOIR

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
OilDisposition27,193 bbl$887,052
Casinghead gasProduction45,135 Mcf$180,752
Total$1,067,804

10,429 Mcf of this lease's gas, across 48 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 (4)

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 28.2287, -97.1244. A lease has no coordinate of its own — that point is the mean of its wells, and they span 9.7 miles.

28.23201, -97.12502 · 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
100.0%
4 of 4 wells
With a plug date
100.0%
4 of 4 wells
Median depth
6,595 ft
4 wells filed one
Completion to plug
17.8 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
4100.0%
A plug date is filed
4100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
4100.0%
NeitherNo plug date, and not on the schedule.
00.0%

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.

How deep they were drilled

Between 6,005 and 7,005 ft, median 6,595 ft, over the 4 wells that filed a depth.

Completions filed
Apr 1976 – Oct 1999
2 of 4 wells; 2 filed none
Plug dates filed
Oct 1989 – Oct 2021
4 of 4 wells

Last completion to plug: a median of 17.8 years across the 2 wells that filed both dates, with the middle half between 15.7 years and 19.9 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-3910374436,990 ftSep 1993Yes
42-391037454 L7,005 ftMay 1995Yes
42-3910181644 F6,005 ftOct 1999Oct 2021Yes
42-39101833216,200 ftApr 1976Oct 1989Yes

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 (349)

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

349 months

Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 201004,85273.585.44$26,406
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20092074.593.75$149
Oct 200994972.544.11$6,856
Sep 20093411165.543.06$2,569
Aug 200982067.423.22$5,528
Jul 200908661.133.46$298
Jun 20091781,47966.163.90$17,537
May 20098527354.743.93$5,725
Apr 200912116646.773.59$6,255
Mar 200912426142.144.06$6,285
Feb 200913018632.814.63$5,127
Jan 200912618935.865.37$5,533
Dec 200812718137.105.98$5,794
Nov 200812815355.496.86$8,152
Oct 200813217375.246.92$11,129
Sep 2008126159101.767.88$14,074
Aug 2008119181114.228.48$15,128
Jul 200874176131.0811.39$11,704
Jun 2008143160131.3313.03$20,865
May 2008187188123.1711.57$25,209
Apr 20080255110.3110.45$2,666
Mar 2008379743101.909.66$45,801
Feb 2008075292.538.77$6,595
Jan 200837537390.388.21$36,953
Dec 2007012188.337.30$884
Nov 200719113391.677.29$18,479
Oct 200719217582.856.92$17,119
Sep 200719120975.846.24$15,790
Aug 200737819169.066.39$27,325
Jul 200719210970.906.39$14,309
Jun 20074127262.007.55$26,087
May 2007115658.747.85$1,086
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20069057.597.75$518
Jan 200678160.598.93$4,735
Dec 2005893954.9413.42$5,413
Nov 20055811854.6910.59$4,421
Oct 20055319058.3413.80$5,713
Sep 2005987461.4512.08$6,916
Aug 200512919861.519.80$9,875
Jul 200510212955.697.84$6,692
Jun 2005605152.337.38$3,516
May 200511414345.226.65$6,106
Apr 200518614649.207.36$10,226
Mar 20059226350.377.15$6,516
Feb 200513216045.226.31$6,979
Jan 20051517843.166.32$7,010
Dec 200423614039.866.75$10,352
Nov 200419627745.286.33$10,628
Oct 200414721049.706.52$8,674
Sep 200418217743.245.28$8,805
Aug 200418349242.375.55$10,485
Jul 200429321138.286.08$12,500
Jun 20043461,02936.106.43$19,110
May 200431289837.486.49$17,526
Apr 2004261,42934.475.86$9,268
Mar 20047440434.365.53$4,777
Feb 200413840332.455.51$6,698
Jan 200417214732.036.30$6,435
Dec 200325016630.266.30$8,611
Nov 20033419828.804.60$10,271
Oct 200329118728.174.76$9,088
Sep 20035117826.314.75$2,187
Aug 2003372429.765.13$1,224
Jul 2003361129.415.17$1,116
Jun 200325728.565.98$756
May 2003851226.595.97$2,332
Apr 2003182826.675.41$631
Mar 2003159331.146.10$4,970
Feb 20038832633.487.93$5,530
Jan 20036611630.315.58$2,648
Dec 2002409526.914.85$1,538
Nov 2002525724.664.14$1,518
Oct 2002487226.464.23$1,575
Sep 2002658927.443.64$2,107
Aug 200219721225.963.16$5,785
Jul 20021173524.583.06$2,983
Jun 2002878023.733.34$2,332
May 20021545924.663.58$4,009
Apr 20021796623.653.51$4,465
Mar 200208822.003.10$273
Feb 200217910318.222.38$3,506
Jan 200216013017.172.38$3,056
Dec 20011564516.932.36$2,747
Nov 200108818.072.41$212
Oct 20013508219.782.53$7,130
Sep 20012346624.262.25$5,825
Aug 200108924.873.05$272
Jul 20019321723.933.20$2,919
Jun 200127116124.563.82$7,271
May 200113114425.524.31$3,963
Apr 200115017724.685.34$4,646
Mar 200143022124.545.38$11,740
Feb 2001030127.755.77$1,736
Jan 200116359127.478.40$9,441
Dec 200016133426.889.12$7,375
Nov 200037635832.215.66$14,137
Oct 20008210431.235.15$3,096
Sep 200017119331.875.19$6,451
Aug 200020425429.644.54$7,200
Jul 200029241328.534.09$10,020
Jun 200014754329.304.40$6,695
May 200025416227.263.68$7,520
Apr 20000024.513.12$0
Mar 200004828.422.86$137
Feb 200007827.622.73$213
Jan 200044660825.272.48$12,779
Dec 1999044524.282.42$1,079
Nov 199915955023.192.43$5,026
Oct 199910255820.982.80$3,704
Sep 199910543921.752.62$3,433
Aug 199915921019.262.88$3,666
Jul 1999030517.892.37$724
Jun 19990015.942.36$0
May 19993617215.792.32$968
Apr 19997668615.102.21$2,662
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 199828212.592.08$357
Aug 1998129311.301.91$1,463
Jul 199810113611.742.24$1,490
Jun 19989095411.242.24$3,146
May 199811879412.622.21$3,241
Apr 19987747013.042.51$2,182
Mar 199823017112.802.31$3,339
Feb 199811811013.952.30$1,899
Jan 199812023514.702.15$2,270
Dec 199712233316.322.41$2,794
Nov 199714011518.193.09$2,902
Oct 19971099919.253.15$2,410
Sep 19971259517.742.95$2,498
Aug 19978511917.862.55$1,822
Jul 19976911217.582.25$1,465
Jun 19978011717.242.26$1,643
May 1997013718.972.31$316
Apr 19971699817.882.08$3,226
Mar 19971567718.951.94$3,106
Feb 19971163720.492.21$2,458
Jan 19971452923.483.54$3,507
Dec 19961567723.32$3,638
Nov 19961576221.97$3,449
Oct 19961809323.31$4,196
Sep 19961818722.22$4,022
Aug 19961988020.26$4,011
Jul 19961684919.55$3,284
Jun 19961791218.73$3,353
May 19962023419.43$3,925
Apr 19961984721.51$4,259
Mar 19961696419.38$3,275
Feb 199620014216.98$3,396
Jan 19962528917.07$4,302
Dec 199523611917.19$4,057
Nov 199520010216.00$3,200
Oct 19951059115.43$1,620
Sep 199511521616.18$1,861
Aug 199518135415.92$2,882
Jul 199517924515.24$2,728
Jun 199515738216.41$2,576
May 19951651,50817.56$2,897
Apr 199518345017.73$3,245
Mar 19951926116.44$3,156
Feb 19952362416.58$3,913
Jan 199514537715.92$2,308
Dec 19941117815.03$1,668
Nov 19941691815.90$2,687
Oct 19942271815.58$3,537
Sep 19942041115.29$3,119
Aug 1994174816.13$2,807
Jul 19941913017.56$3,354
Jun 1994611117.09$1,042
May 1994451315.88$715
Apr 199420414.14$283
Mar 1994651512.46$810
Feb 19942093112.50$2,613
Jan 199424214412.66$3,064
Dec 19932797012.33$3,440
Nov 199327535414.49$3,985
Oct 199326830615.85$4,248
Sep 199322281815.03$3,337
Aug 19932461,73515.66$3,852
Jul 199331323015.46$4,839
Jun 199335543416.79$5,960
May 199330954517.68$5,463
Apr 199330527618.05$5,505
Mar 199328512118.14$5,170
Feb 199323618117.90$4,224
Jan 199325921316.93$4,385

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.

Feb 2010 — as filed, then multipliedworked
Oil                    0 bbl  × $ 73.58 =         $0
Casinghead gas     4,852 Mcf  × $  5.44 =    $26,406

────────────────────────────────────────────────────
Month total                                  $26,406

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. 02/O/957 is the state's own key, not one this site invented.