OCONNOR, THOMAS, -C-

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the TOM OCONNOR (4500 GRETA MASS.) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 2566District 02Field 90534350OilCasinghead gasSaveExport
Value, all time
$31.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$410 k
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 12 leases and 120 wells, and the rule below applies to all of them.

Discovered
1959-08-11
as the register files it
Field class
Oil
the register's own label
Between wells
0 ft
minimum
From a lease line
150 ft
minimum

A drilling unit in this field needs at least 10 acres. The field rule took effect on 2019-09-11.

The Commission's schedule remark for this field reads: SPECIAL HORIZ. LANGUAGE (TAKE POINTS)

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
OilDisposition647,965 bbl$30,332,919
Casinghead gasProduction277,997 Mcf$1,189,047
Total$31,521,966

49,644 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 (27)

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 28.3677, -97.1571. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles. 2 wells have no surveyed location and are left out of it.

28.36620, -97.15686 · centre of 25 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
70.4%
19 of 27 wells
With a plug date
14.8%
4 of 27 wells
Median depth
4,515 ft
24 wells filed one
Completion to plug
10.4 years
median over 4 wells

What the state filed about each well

On the RRC proration schedule
1970.4%
A plug date is filed
414.8%
BothOn the schedule and plugged. Neither fact cancels the other.
414.8%
NeitherNo plug date, and not on the schedule.
829.6%

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, 24 of 27 wells. Median 4,515 ft, with the middle half between 4,500 and 5,925 ft; the shallowest is 4,500 ft and the deepest 6,116 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, 24 of 27 wells, Apr 1984 – Aug 2023. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Apr 1984 – Aug 2023
24 of 27 wells; 3 filed none
Plug dates filed
Aug 1994 – Feb 2019
4 of 27 wells; 23 filed none

Last completion to plug: a median of 10.4 years across the 4 wells that filed both dates, with the middle half between 4.5 years and 19.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

27 wells

42-3918077055Yes
42-3918077168Yes
42-3910115559
42-39131609816,116 ftAug 2023
42-39130066764,500 ftSep 2020
42-391011581G5,898 ftMar 2019
42-3910116795,925 ftMar 2018
42-391011327G6,000 ftDec 2017
42-39130067774,500 ftMar 2013
42-39101179654,515 ftMay 2012Yes
42-39131612846,100 ftAug 2011
42-39103804614,515 ftMar 2011Yes
42-39101180664,515 ftMar 2011Yes
42-39103998635,945 ftNov 2010Yes
42-39101135225,925 ftJan 2010Jan 2015Yes
42-39101129195,925 ftMar 2008Yes
42-39130050714,500 ftMay 2003Feb 2019Yes
42-39101177624,515 ftNov 2002Yes
42-39101139584,500 ftDec 1999Yes
42-39101156604,515 ftDec 1996Yes
42-39130055694,500 ftDec 1995Yes
42-39101178644,522 ftJul 1991Aug 1994Yes
42-39130051704,500 ftOct 1985Yes
42-39130071754,500 ftAug 1985Apr 2015Yes
42-39130065744,500 ftAug 1985Yes
42-39130064734,500 ftMay 1984Yes
42-39101157674,515 ftApr 1984Yes

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 20265356106.413.05$56,948
Apr 2026492498.932.87$48,685
Mar 2026711289.753.15$63,819
Feb 2026413263.503.75$26,233
Jan 2026367259.138.00$21,717
Dec 2025426156.664.41$24,142
Nov 2025407458.593.93$23,862
Oct 2025468059.383.30$27,790
Sep 2025411662.743.08$25,805
Aug 2025481763.933.01$30,771
Jul 20254291366.743.32$28,675
Jun 20254698766.483.13$31,451
May 2025476860.553.23$28,848
Apr 2025491662.363.54$30,640
Mar 20254771767.704.27$32,365
Feb 20254041470.884.34$28,696
Jan 202542318674.324.28$32,233
Dec 202442519468.993.12$29,926
Nov 20243154169.052.20$21,841
Oct 20242833971.372.28$20,287
Sep 2024247069.612.36$17,194
Aug 20243272675.632.06$24,785
Jul 2024333979.932.15$26,636
Jun 20243126078.082.63$24,519
May 202437018578.812.20$29,566
Apr 202439712684.451.66$33,736
Mar 202444130680.301.55$35,885
Feb 202436323876.091.78$28,045
Jan 202438669473.023.30$30,474
Dec 202338636371.262.61$28,454
Nov 202345241077.892.81$36,357
Oct 202342614085.443.09$36,830
Sep 202335425089.042.74$32,204
Aug 20234451280.522.67$35,863
Jul 2023530074.852.64$39,671
Jun 2023524068.962.26$36,135
May 2023752070.622.23$53,106
Apr 2023624078.122.24$48,747
Mar 2023417072.852.39$30,378
Feb 2023521075.112.47$39,132
Jan 2023554076.533.39$42,398
Dec 2022520076.415.73$39,733
Nov 2022566085.005.65$48,110
Oct 2022626587.185.86$54,604
Sep 2022532084.888.16$45,156
Aug 2022599094.529.13$56,617
Jul 20228460101.587.54$85,937
Jun 20221,2120115.097.98$139,489
May 20221,5126109.378.43$165,418
Apr 20221,5530104.226.84$161,854
Mar 20221,5830108.885.08$172,357
Feb 20221,435091.054.86$130,657
Jan 20221,4452681.844.54$118,377
Dec 20211,5629871.323.90$111,784
Nov 20211,6115177.435.24$125,007
Oct 20211,599179.795.71$127,590
Sep 20211,5854269.865.35$110,953
Aug 20211,391066.024.22$91,834
Jul 20211,590170.783.98$112,544
Jun 20211,61954669.493.38$114,350
May 20211,69898363.483.02$110,755
Apr 20211,60798360.362.76$99,710
Mar 20211,6371261.302.72$100,381
Feb 20211,066057.805.55$61,615
Jan 20211,75327450.412.81$89,139
Dec 20201,50818144.642.68$67,801
Nov 20201,54370638.772.71$61,733
Oct 20201,58655836.972.48$60,017
Sep 20201,41714537.091.99$52,845
Aug 20201,52223439.982.39$61,408
Jul 20201,55127938.371.83$60,021
Jun 20201,46234934.901.69$51,614
May 20201,13132716.921.81$19,730
Apr 20201,33016214.751.80$19,910
Mar 20201,23911730.341.86$37,808
Feb 20201,48222049.881.98$74,358
Jan 20201,508057.252.09$86,333
Dec 20191,072059.012.30$63,259
Nov 20191,30726755.302.75$73,012
Oct 20191,30521753.472.42$70,303
Sep 20191,44663755.052.66$81,295
Aug 20191,59787553.112.30$86,833
Jul 20191,3781,03356.272.46$80,081
Jun 201992464552.782.49$50,376
May 20191,46565058.482.74$87,454
Apr 20191,69418562.632.75$106,604
Mar 20191,91927056.803.06$109,826
Feb 20191,87523750.852.79$96,006
Jan 20192,02345546.033.23$94,588
Dec 20182,0621,05846.594.19$100,497
Nov 20182,17872252.934.24$118,341
Oct 20182,25993961.443.40$141,984
Sep 20182,240059.543.11$133,370
Aug 20182,16369259.403.07$130,604
Jul 20182,21777165.142.93$146,676
Jun 20182,20380760.183.08$135,060
May 20182,42783265.382.90$161,091
Apr 20182,25350163.842.90$145,285
Mar 20182,39048361.222.79$147,662
Feb 20182,28516661.782.77$141,626
Jan 20182,22410962.874.01$140,260
Dec 20172,2682357.272.92$129,956
Nov 20172,14250255.423.12$120,275
Oct 20172,3062249.292.98$113,728
Sep 2017957047.523.09$45,477
Aug 20171,35536845.373.00$62,582
Jul 20171,71724043.873.09$76,066
Jun 20171,68416842.493.09$72,072
May 20171,67738445.373.26$77,339
Apr 20171,713047.933.21$82,104
Mar 20171,792046.772.98$83,812
Feb 20171,7029750.452.95$86,152
Jan 20171,70624849.413.42$85,141
Dec 20161,84922648.763.72$90,999
Nov 20161,56534742.492.64$67,414
Oct 20161,60635746.193.09$75,284
Sep 20161,42951641.553.10$60,975
Aug 20161,38549041.442.92$58,827
Jul 20161,51549541.622.92$64,502
Jun 20161,37652945.352.69$63,822
May 20161,55480942.521.99$67,687
Apr 20161,81756836.561.99$67,560
Mar 20162,07775333.011.79$69,913
Feb 20161,65026526.472.06$44,222
Jan 20161,83417327.352.36$50,569
Dec 20151,81912932.362.00$59,121
Nov 20151,99822438.792.17$77,988
Oct 20151,90520943.552.43$83,470
Sep 20152,05431842.992.76$89,179
Aug 20152,00553240.162.87$82,049
Jul 20152,15799748.152.95$106,796
Jun 20152,16163556.152.88$123,171
May 20152,20468755.212.96$123,713
Apr 20152,15915649.822.71$107,984
Mar 20151,95413942.892.93$84,215
Feb 20151,72924244.662.98$77,937
Jan 20151,85118143.433.10$80,950
Dec 20142,1872054.693.59$119,679
Nov 20142,29016470.464.25$162,051
Oct 20142,60964978.303.90$206,816
Sep 20142,05544586.164.05$178,859
Aug 20141,58536189.394.04$143,140
Jul 20142,06534896.564.18$200,851
Jun 20142,1408098.164.74$210,441
May 20141,55840994.734.73$149,523
Apr 20141,52224195.944.81$147,180
Mar 20142,01949995.895.06$196,125
Feb 20142,52944597.406.19$249,080
Jan 20142,9721,47490.404.86$275,834
Dec 20133,17547791.824.35$293,606
Nov 20133,2491,33388.853.74$293,657
Oct 20133,15959697.423.78$310,002
Sep 2013864272104.113.72$90,962
Aug 2013842476104.253.52$89,455
Jul 2013832309102.523.72$86,445
Jun 201371562194.403.93$69,939
May 20136621,71694.834.15$69,897
Apr 201374286893.964.28$73,436
Mar 201395130093.623.91$90,206
Feb 20131,00025791.233.42$92,109
Jan 201384840491.603.42$79,058
Dec 201287933586.773.42$77,417
Nov 20121,08822986.953.62$95,432
Oct 20121,13044889.383.40$102,522
Sep 201297258594.672.92$93,727
Aug 201297885292.662.91$93,099
Jul 201291932385.133.02$79,210
Jun 20121,0187479.822.52$81,443
May 20121,2085891.612.49$110,809
Apr 20121,730283101.652.00$176,420
Mar 20121,963452105.052.22$207,218
Feb 20121,725778101.102.57$176,397
Jan 20121,55236398.092.73$153,228
Dec 20111,19327896.873.24$116,467
Nov 20111,14631795.723.31$110,745
Oct 20111,16180684.983.65$101,603
Sep 20111,13647783.623.99$96,894
Aug 20111,40426183.404.15$118,177
Jul 20111,80244894.144.52$171,664
Jun 20111,93446892.904.64$181,840
May 20111,86539698.134.40$184,757
Apr 20111,783368105.964.33$190,521
Mar 20112,01040596.364.06$195,327
Feb 20111,87647085.644.18$162,625
Jan 20112,08349586.504.59$182,451
Dec 20101,99434685.734.35$172,450
Nov 20101,99636780.843.80$162,750
Oct 20102,28791978.103.51$181,839
Sep 20102,25691672.633.98$167,498
Aug 20102,18716973.684.42$161,885
Jul 20102,1447972.554.74$155,921
Jun 20102,024070.364.91$142,409
May 20102,12983271.124.24$154,938
Apr 20102,19167081.694.12$181,745
Mar 20102,1021,31978.394.39$170,564
Feb 20101,89236373.585.44$141,189
Jan 20101,7861,03174.365.96$138,956
Dec 20091,7601,60671.445.48$134,541
Nov 20091,7231,42374.593.75$133,857
Oct 20091,7471,49072.544.11$132,852
Sep 20091,7901,35365.543.06$121,463
Aug 20091,6791,40367.423.22$117,714
Jul 20091,5211,36461.133.46$97,704
Jun 20091,4461,22466.163.90$100,435
May 20093,5551,52554.743.93$200,587
Apr 20091,2771,38146.773.59$64,680
Mar 20091,2881,45842.144.06$60,194
Feb 20091,3401,29032.814.63$49,942
Jan 20091,4571,48735.865.37$60,235
Dec 20081,5481,13637.105.98$64,221
Nov 20081,4141,02755.496.86$85,508
Oct 20081,4451,06375.246.92$116,080
Sep 20081,2451,231101.767.88$136,388
Aug 20081,3481,398114.228.48$165,828
Jul 20081,4261,588131.0811.39$205,006
Jun 20081,2271,463131.3313.03$180,209
May 20081,5281,484123.1711.57$205,380
Apr 20081,4191,424110.3110.45$171,418
Mar 20081,4361,412101.909.66$159,974
Feb 20081,2101,29592.538.77$123,319
Jan 20081,1731,51090.388.21$118,406
Dec 20071,2221,39088.337.30$118,089
Nov 20078131,16091.677.29$82,986
Oct 20071,0141,30782.856.92$93,057
Sep 20071,0681,25375.846.24$88,821
Aug 20071,1261,28169.066.39$85,945
Jul 20071,1501,34070.906.39$90,095
Jun 20071,1541,23962.007.55$80,901
May 20071,2181,55358.747.85$83,731
Apr 20071,1971,85159.617.81$85,801
Mar 20071,2043,30156.927.30$92,635
Feb 20071,1401,33155.108.22$73,750
Jan 20071,2881,48050.306.73$74,742
Dec 20061,02991956.656.92$64,651
Nov 20069241,72454.207.62$63,213
Oct 200696490454.906.01$58,360
Sep 200688980460.085.04$57,461
Aug 20069551,92968.717.34$79,777
Jul 20061,0585,03069.376.34$105,298
Jun 20061,2491,36966.286.38$91,523
May 20069121,04466.016.42$66,909
Apr 20069351,35364.397.36$70,163
Mar 200683686556.707.08$53,528
Feb 200696794157.597.75$62,983
Jan 20061,22144460.598.93$77,947
Dec 20051,18167054.9413.42$73,872
Nov 20051,52664354.6910.59$90,265
Oct 20051,8621,49158.3413.80$129,199
Sep 20051,7052,09861.4512.08$130,114
Aug 20051,5591,85861.519.80$114,097
Jul 20051,3661,20355.697.84$85,508
Jun 20051,4531,24452.337.38$85,218
May 20051,6611,32945.226.65$83,950
Apr 20051,6501,44649.207.36$91,823
Mar 20051,73093550.377.15$93,830
Feb 20051,81785645.226.31$87,568
Jan 20052,0261,13843.166.32$94,637
Dec 20042,1731,62639.866.75$97,593
Nov 20042,03851245.286.33$95,522
Oct 20042,6581,54549.706.52$142,168
Sep 20042,6942,15743.245.28$127,886
Aug 20042,8841,74142.375.55$131,859
Jul 20042,8765,62638.286.08$144,323
Jun 20042,7483,84236.106.43$123,918
May 20042,7822,76437.486.49$122,220
Apr 20043,1451,63734.475.86$117,998
Mar 20043,5632,69334.365.53$137,317
Feb 20043,3012,05832.455.51$118,456
Jan 20041,2032,76932.036.30$55,976
Dec 20031,2292,06230.266.30$50,184
Nov 20031,0121,84128.804.60$37,605
Oct 20031,1531,68228.174.76$40,486
Sep 20031,05091326.314.75$31,962
Aug 20031,0571,10929.765.13$37,145
Jul 20031,1121,23429.415.17$39,085
Jun 20031,1771,04928.565.98$39,891
May 20031,05836226.595.97$30,294
Apr 20031,05356326.675.41$31,128
Mar 20031,04576131.146.10$37,180
Feb 200393434433.487.93$33,997
Jan 20031,00434430.315.58$32,351
Dec 200299462026.914.85$29,758
Nov 20021,03648124.664.14$27,538
Oct 20021,12093526.464.23$33,589
Sep 20021,12612627.443.64$31,355
Aug 20021,31454725.963.16$35,842
Jul 20021,49785524.583.06$39,414
Jun 20021,37667223.733.34$34,896
May 20021,71279824.663.58$45,078
Apr 20021,30270623.653.51$33,272
Mar 20021,1295722.003.10$25,015
Feb 20021,11841718.222.38$21,361
Jan 20021,09657317.172.38$20,180
Dec 20011,0781,49116.932.36$21,776
Nov 20011,09547918.072.41$20,939
Oct 20011,12765519.782.53$23,948
Sep 20011,26720024.262.25$31,188
Aug 20011,52075824.873.05$40,117
Jul 20011,48147523.933.20$36,959
Jun 20011,11056624.563.82$29,426
May 20011,20751125.524.31$33,004
Apr 20011,13522124.685.34$29,191
Mar 20011,13738824.545.38$29,988
Feb 200193632327.755.77$27,837
Jan 200166333427.478.40$21,018
Dec 20001,0981,17726.889.12$40,251
Nov 20009015732.215.66$29,344
Oct 20001,08755531.235.15$36,803
Sep 20001,18924531.875.19$39,164
Aug 20001,1103129.644.54$33,041
Jul 20001,06633128.534.09$31,767
Jun 20001,23450529.304.40$38,377
May 20001,27081127.263.68$37,604
Apr 20001,2341,15724.513.12$33,851
Mar 20001,19534928.422.86$34,960
Feb 20001,15632427.622.73$32,812
Jan 20001,4611,02325.272.48$39,457
Dec 19991,67766124.282.42$42,320
Nov 19991,5425623.192.43$35,895
Oct 19991,48031920.982.80$31,945
Sep 19991,46024321.752.62$32,391
Aug 19991,33290119.262.88$28,245
Jul 19991,43781317.892.37$27,637
Jun 19991,27942515.942.36$21,391
May 19991,55448415.792.32$25,661
Apr 19991,4741,13215.102.21$24,757
Mar 19991,42725912.471.84$18,271
Feb 19991,3804859.981.82$14,654
Jan 19991,55029710.381.90$16,653
Dec 19981,4901039.201.77$13,891
Nov 19981,51721410.892.19$16,988
Oct 19981,44414612.421.97$18,222
Sep 19981,50118312.592.08$19,279
Aug 199896855311.301.91$11,993
Jul 19981,53042211.742.24$18,906
Jun 19981,61842511.242.24$19,137
May 19981,59649912.622.21$21,242
Apr 19982,13437513.042.51$28,767
Mar 19981,69140912.802.31$22,589
Feb 19981,5824213.952.30$22,165
Jan 19981,72444214.702.15$26,295
Dec 19971,85172016.322.41$31,944
Nov 19971,85561118.193.09$35,629
Oct 19971,93556019.253.15$39,013
Sep 19971,78494117.742.95$34,429
Aug 19971,9791,12217.862.55$38,211
Jul 19971,7741,44217.582.25$34,427
Jun 19971,72969117.242.26$31,368
May 19971,98481018.972.31$39,506
Apr 19971,94891617.882.08$36,738
Mar 19971,92589818.951.94$38,220
Feb 19971,68252020.492.21$35,611
Jan 19971,94140123.483.54$46,994
Dec 19962,05388123.32$47,876
Nov 19961,81758721.97$39,919
Oct 19961,98988523.31$46,364
Sep 19962,00089922.22$44,440
Aug 19962,21797620.26$44,916
Jul 19962,01685619.55$39,413
Jun 19961,82182318.73$34,107
May 19961,84954519.43$35,926
Apr 19961,85555821.51$39,901
Mar 19961,87575719.38$36,338
Feb 19962,11996016.98$35,981
Jan 19963,0741,27817.07$52,473
Dec 19952,3781,00417.19$40,878
Nov 19952,3771,07216.00$38,032
Oct 19952,52690315.43$38,976
Sep 19952,7182,44216.18$43,977
Aug 19952,10284215.92$33,464
Jul 19951,96997915.24$30,008
Jun 19953,93591316.41$64,573
May 19953,18793917.56$55,964
Apr 19952,60857117.73$46,240
Mar 19952,59955516.44$42,728
Feb 19953,16054616.58$52,393
Jan 19952,87514715.92$45,770
Dec 19943,03614115.03$45,631
Nov 19942,87111615.90$45,649
Oct 19943,35174415.58$52,209
Sep 19943,21248315.29$49,111
Aug 19943,70226816.13$59,713
Jul 19942,80824317.56$49,308
Jun 19943,56577517.09$60,926
May 19943,7201,11615.88$59,074
Apr 19943,4101,26214.14$48,217
Mar 19943,4741,67712.46$43,286
Feb 19943,3641,42312.50$42,050
Jan 19943,4041,34912.66$43,095
Dec 19933,9781,60812.33$49,049
Nov 19933,22489014.49$46,716
Oct 19933,66079515.85$58,011
Sep 19933,67687715.03$55,250
Aug 19933,95986715.66$61,998
Jul 19933,6961,37915.46$57,140
Jun 19933,8081,44616.79$63,936
May 19934,1841,65617.68$73,973
Apr 19934,03480518.05$72,814
Mar 19934,0611,64318.14$73,667
Feb 19932,8912,52617.90$51,749
Jan 19933,2064,63716.93$54,278

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 2026 — as filed, then multipliedworked
Oil                  535 bbl  × $106.41 =    $56,929
Casinghead gas         6 Mcf  × $  3.05 =        $18

────────────────────────────────────────────────────
Month total                                  $56,948

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/2566 is the state's own key, not one this site invented.