OBRIEN, J. M.

Operated by SOUTH TEXAS OPERATING COMPANY (P-5 802845) in the GRETA (4400) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 3984District 02Field 36867780OilCasinghead gasSaveExport
Value, all time
$4.2 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 63 leases and 296 wells, and the rule below applies to all of them.

Discovered
1963-05-22
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 25 acres. The field rule took effect on 2020-12-08.

The Commission's schedule remark for this field reads: CHANGED MIN. ACRES FROM 25 TO 40, AND ADDED OPTIONAL 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
OilDisposition100,860 bbl$3,871,090
Casinghead gasProduction122,593 Mcf$374,269
Total$4,245,360

39,434 Mcf of this lease's gas, across 44 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 (8)

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 28.3990, -97.1899. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.3 miles.

28.39805, -97.18590 · 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
87.5%
7 of 8 wells
With a plug date
75.0%
6 of 8 wells
Median depth
4,396 ft
7 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
787.5%
A plug date is filed
675.0%
BothOn the schedule and plugged. Neither fact cancels the other.
675.0%
NeitherNo plug date, and not on the schedule.
112.5%

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

Total depth in feet, 7 of 8 wells. Median 4,396 ft, with the middle half between 4,395 and 4,400 ft; the shallowest is 4,389 ft and the deepest 4,400 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 1 of 8 wells, Jan 1991. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jan 1991
1 of 8 wells; 7 filed none
Plug dates filed
Nov 1983 – May 2014
6 of 8 wells; 2 filed none

8 wells

42-39100963104,395 ftDec 1983Yes
42-3910103314,396 ftMay 2014Yes
42-3910103424,400 ftSep 2004Yes
42-3910103644,400 ftSep 2012Yes
42-391010375Yes
42-3910103864,400 ftNov 1983Yes
42-3910103974,389 ftSep 2004Yes
42-3910096294,395 ftJan 1991

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 20250060.553.23$0
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 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
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 2012144086.773.42$12,495
Nov 201211623986.953.62$10,953
Oct 201211526189.383.40$11,166
Sep 201211217294.672.92$11,105
Aug 201216519092.662.91$15,841
Jul 201211021285.133.02$10,005
Jun 201216918979.822.52$13,966
May 201210815091.612.49$10,267
Apr 2012110182101.652.00$11,545
Mar 2012115147105.052.22$12,407
Feb 2012115148101.102.57$12,007
Jan 201211130498.092.73$11,719
Dec 201111729996.873.24$12,302
Nov 201110825495.723.31$11,179
Oct 201116330384.983.65$14,957
Sep 201116830183.623.99$15,248
Aug 201116937583.404.15$15,651
Jul 201117133794.144.52$17,620
Jun 201116429292.904.64$16,590
May 201116434698.134.40$17,617
Apr 2011221373105.964.33$25,033
Mar 201116539496.364.06$17,498
Feb 201111126085.644.18$10,593
Jan 201116529786.504.59$15,635
Dec 201016623885.734.35$15,266
Nov 201016416680.843.80$13,888
Oct 201016527878.103.51$13,862
Sep 201017128972.633.98$13,570
Aug 201016532373.684.42$13,585
Jul 201016233372.554.74$13,330
Jun 201016723270.364.91$12,889
May 201016627071.124.24$12,949
Apr 201016533981.694.12$14,876
Mar 201016542078.394.39$14,778
Feb 201017120173.585.44$13,676
Jan 201033627374.365.96$26,613
Dec 200925029971.445.48$19,500
Nov 200933533374.593.75$26,237
Oct 200941839272.544.11$31,933
Sep 200942042065.543.06$28,814
Aug 200942441667.423.22$29,925
Jul 200950344561.133.46$32,290
Jun 200941942466.163.90$29,373
May 200941649454.743.93$24,711
Apr 200941411946.773.59$19,790
Mar 200949719342.144.06$21,727
Feb 200941740832.814.63$15,572
Jan 200933147935.865.37$14,442
Dec 200833245337.105.98$15,025
Nov 200842241355.496.86$26,250
Oct 200847839175.246.92$38,671
Sep 2008500364101.767.88$53,747
Aug 2008419410114.228.48$51,336
Jul 2008420392131.0811.39$59,518
Jun 2008499382131.3313.03$70,512
May 2008494387123.1711.57$65,325
Apr 2008497463110.3110.45$59,665
Mar 2008427475101.909.66$48,102
Feb 200833825292.538.77$33,485
Jan 200852544990.388.21$51,134
Dec 200751453088.337.30$49,272
Nov 200752743191.677.29$51,453
Oct 200750951082.856.92$45,701
Sep 200743939075.846.24$35,729
Aug 200752341869.066.39$38,789
Jul 200727115070.906.39$20,172
Jun 200761023562.007.55$39,594
May 200742530058.747.85$27,318
Apr 200742329259.617.81$27,494
Mar 200753229956.927.30$32,465
Feb 200750633155.108.22$30,600
Jan 200742933250.306.73$23,812
Dec 200643726656.656.92$26,596
Nov 200650924254.207.62$29,431
Oct 200652022354.906.01$29,889
Sep 200644128460.085.04$27,926
Aug 200653331068.717.34$38,898
Jul 200652539269.376.34$38,906
Jun 200660552866.286.38$43,470
May 200660744566.016.42$42,927
Apr 200651951964.397.36$37,239
Mar 200642930356.707.08$26,470
Feb 200652242657.597.75$33,364
Jan 200653240360.598.93$35,834
Dec 200553345554.9413.42$35,387
Nov 200550532854.6910.59$31,091
Oct 200558343658.3413.80$40,027
Sep 200553244161.4512.08$38,018
Aug 200560051661.519.80$41,961
Jul 200535429755.697.84$22,044
Jun 200559551752.337.38$34,952
May 200558841445.226.65$29,343
Apr 200569439249.207.36$37,030
Mar 200543462450.377.15$26,325
Feb 200561440845.226.31$30,340
Jan 200562747343.166.32$30,052
Dec 200459144439.866.75$26,555
Nov 200452152645.286.33$26,921
Oct 200461157049.706.52$34,080
Sep 200452043143.245.28$24,762
Aug 200452066242.375.55$25,707
Jul 200459546838.286.08$25,624
Jun 200453529636.106.43$21,218
May 200451230637.486.49$21,177
Apr 200442315534.475.86$15,489
Mar 200450636034.365.53$19,377
Feb 200459132632.455.51$20,974
Jan 200460243332.036.30$22,010
Dec 200342124930.266.30$14,309
Nov 200367231328.804.60$20,792
Oct 200367741128.174.76$21,027
Sep 200358942026.314.75$17,491
Aug 200364635429.765.13$21,041
Jul 200349827729.415.17$16,079
Jun 200383921328.565.98$25,236
May 200366137826.595.97$19,834
Apr 200366937326.675.41$19,859
Mar 200358738631.146.10$20,632
Feb 200358735433.487.93$22,459
Jan 200367238730.315.58$22,529
Dec 200275646726.914.85$22,611
Nov 200275744124.664.14$20,492
Oct 200267438426.464.23$19,458
Sep 200268640727.443.64$20,303
Aug 200251635925.963.16$14,531
Jul 200286541624.583.06$22,535
Jun 200258641923.733.34$15,305
May 200285142324.663.58$22,502
Apr 200251237723.653.51$13,433
Mar 200252828322.003.10$12,494
Feb 200250828918.222.38$9,942
Jan 2002711017.172.38$12,208
Dec 2001745016.932.36$12,613
Nov 2001561018.072.41$10,137
Oct 2001991019.782.53$19,602
Sep 200149634324.262.25$12,805
Aug 200149340024.873.05$13,482
Jul 200144540823.933.20$11,953
Jun 20013818324.563.82$9,675
May 200111422825.524.31$3,891
Apr 20017024.685.34$173
Mar 200131024.545.38$761
Feb 20011612027.755.77$4,583
Jan 200154326627.478.40$17,150
Dec 200039722526.889.12$12,724
Nov 200045322132.215.66$15,842
Oct 200057427131.235.15$19,320
Sep 200047320431.875.19$16,133
Aug 20001775629.644.54$5,501
Jul 200047028.534.09$1,341
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
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 1998615012.592.08$7,743
Aug 19980011.301.91$0
Jul 19987032,88711.742.24$14,712
Jun 19985632,40611.242.24$11,711
May 19986852,87812.622.21$14,995
Apr 19985632,07913.042.51$12,550
Mar 19985312,39712.802.31$12,333
Feb 19986622,13813.952.30$14,150
Jan 19988372,08314.702.15$16,792
Dec 19971,2401,98616.322.41$25,025
Nov 19971,0321,44218.193.09$23,225
Oct 19971,0792,04719.253.15$27,218
Sep 19979282,49917.742.95$23,847
Aug 19971,3271,55317.862.55$27,668
Jul 199760874717.582.25$12,367
Jun 19976021,12517.242.26$12,918
May 19976231,02018.972.31$14,173
Apr 199776276117.882.08$15,210
Mar 199738797518.951.94$9,224
Feb 19973811,75220.492.21$11,671
Jan 19975441,80223.483.54$19,152
Dec 19966042,01623.32$14,085
Nov 19963271,55021.97$7,184
Oct 199668170423.31$15,874
Sep 199632778122.22$7,266
Aug 199670884220.26$14,344
Jul 19965631,56419.55$11,007
Jun 19963441,60418.73$6,443
May 19967751,38519.43$15,058
Apr 19963381,52521.51$7,270
Mar 19965981,65219.38$11,589
Feb 199673397216.98$12,446
Jan 199637877617.07$6,452
Dec 19955191,45517.19$8,922
Nov 19955671,60716.00$9,072
Oct 19956181,48515.43$9,536
Sep 19956761,34316.18$10,938
Aug 199521483415.92$3,407
Jul 199535987515.24$5,471
Jun 199571082116.41$11,651
May 199542290417.56$7,410
Apr 199577781017.73$13,776
Mar 199538281016.44$6,280
Feb 19957751,16716.58$12,850
Jan 19955031,60015.92$8,008
Dec 19946571,52715.03$9,875
Nov 199433595015.90$5,327
Oct 19947691,01115.58$11,981
Sep 199425774915.29$3,930
Aug 199481390516.13$13,114
Jul 19948091,01017.56$14,206
Jun 19940017.09$0
May 19940015.88$0
Apr 19940014.14$0
Mar 19940012.46$0
Feb 199457230012.50$7,150
Jan 1994030012.66$0
Dec 199357030012.33$7,028
Nov 19931,42430014.49$20,634
Oct 199343430015.85$6,879
Sep 19931,31130015.03$19,704
Aug 1993030015.66$0
Jul 199329530015.46$4,561
Jun 1993030016.79$0
May 199350830017.68$8,981
Apr 199355630018.05$10,036
Mar 199311130018.14$2,014
Feb 1993030017.90$0
Jan 199350530016.93$8,550

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.

Dec 2012 — as filed, then multipliedworked
Oil                  144 bbl  × $ 86.77 =    $12,495
Casinghead gas         0 Mcf  × $  3.42 =         $0

────────────────────────────────────────────────────
Month total                                  $12,495

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/3984 is the state's own key, not one this site invented.