RILEY, T. S. "B" TRACT "2"

Operated by OCCIDENTAL PERMIAN EOR, LLC (P-5 103962) in the CEDAR LAKE field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 579District 8AField 16580001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$41.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$643 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 19 leases and 500 wells, and the rule below applies to all of them.

Discovered
1939-08-24
as the register files it
Field class
Oil
the register's own label
Between wells
933 ft
minimum
From a lease line
660 ft
minimum

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

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: 20 ACRE OPT.

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA7none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition945,078 bbl$41,039,898
Casinghead gasProduction161,306 Mcf$611,664
Total$41,651,563

31,006 Mcf of this lease's gas, across 45 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 (17)

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 32.8496, -102.2726. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

32.84961, -102.27140 · 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
58.8%
10 of 17 wells
With a plug date
52.9%
9 of 17 wells
Median depth
4,839 ft
17 wells filed one
Completion to plug
2.8 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
1058.8%
A plug date is filed
952.9%
BothOn the schedule and plugged. Neither fact cancels the other.
952.9%
NeitherNo plug date, and not on the schedule.
741.2%

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, 17 of 17 wells. Median 4,839 ft, with the middle half between 4,822 and 4,862 ft; the shallowest is 4,784 ft and the deepest 4,923 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, 10 of 17 wells, Feb 1988 – Jan 2025. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Feb 1988 – Jan 2025
10 of 17 wells; 7 filed none
Plug dates filed
May 2005 – Jul 2026
9 of 17 wells; 8 filed none

Last completion to plug: a median of 2.8 years across the 3 wells that filed both dates, with the middle half between 19 months and 19.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

17 wells

42-16502105244,923 ftApr 2024Yes
42-16510106254,832 ftOct 2018Yes
42-16510281284,821 ftApr 2024Yes
42-16510284314,839 ftFeb 2023Yes
42-16510285334,871 ftMay 2005Yes
42-16510404324,830 ftApr 2016Yes
42-16510282294,816 ft
42-16510283304,863 ftJan 2025
42-16510150264,857 ftDec 2023Apr 2024Yes
42-16533803374,847 ftSep 2023Jul 2026Yes
42-16510155274,784 ftMar 2018Yes
42-16533801414,805 ftOct 2012
42-16533805394,867 ftMar 1988
42-16533802404,822 ftMar 1988
42-16533794364,853 ftFeb 1988
42-16533795354,862 ftFeb 1988
42-16533804384,825 ftFeb 1988Dec 2024Yes

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 20267540106.413.05$80,233
Apr 202674024198.932.87$73,900
Mar 202673920489.753.15$66,968
Feb 202670017763.503.75$45,114
Jan 202674527659.138.00$46,259
Dec 202571228456.664.41$41,595
Nov 202564029758.593.93$38,664
Oct 202576032759.383.30$46,209
Sep 202567032262.743.08$43,027
Aug 202567634663.933.01$44,260
Jul 202585843066.743.32$58,688
Jun 202585934766.483.13$58,192
May 202583734860.553.23$51,805
Apr 202580429362.363.54$51,176
Mar 202587110067.704.27$59,394
Feb 20257829370.884.34$55,832
Jan 202594111874.324.28$70,440
Dec 20249209668.993.12$63,770
Nov 20247979069.052.20$55,231
Oct 20248616971.372.28$61,607
Sep 20249288869.612.36$64,806
Aug 202480210375.632.06$60,868
Jul 20249496379.932.15$75,989
Jun 20249823678.082.63$76,769
May 202492723278.812.20$73,567
Apr 202497223884.451.66$82,480
Mar 20241,04820980.301.55$84,477
Feb 202493121376.091.78$71,220
Jan 202492821673.023.30$68,475
Dec 202392320671.262.61$66,311
Nov 20231,09823777.892.81$86,189
Oct 20231,16431585.443.09$100,425
Sep 202383920589.042.74$75,265
Aug 202368323680.522.67$55,626
Jul 202371319974.852.64$53,894
Jun 20239519968.962.26$65,805
May 20239344670.622.23$66,062
Apr 20235155678.122.24$40,357
Mar 20234456572.852.39$32,574
Feb 20234586375.112.47$34,556
Jan 20235503876.533.39$42,220
Dec 20223592376.415.73$27,563
Nov 20222923385.005.65$25,006
Oct 20221405287.185.86$12,510
Sep 202235010184.888.16$30,533
Aug 202295914794.529.13$91,986
Jul 2022870154101.587.54$89,536
Jun 202273699115.097.98$85,496
May 2022537119109.378.43$59,735
Apr 2022515125104.226.84$54,528
Mar 20221,0470108.885.08$113,997
Feb 202296415591.054.86$88,525
Jan 202292919181.844.54$76,896
Dec 20211,16921971.323.90$84,227
Nov 20211,08321377.435.24$84,972
Oct 202163220979.795.71$51,621
Sep 202190119569.865.35$63,987
Aug 202198321366.024.22$65,797
Jul 20211,08116770.783.98$77,178
Jun 20211,05119869.493.38$73,703
May 20211,02117463.483.02$65,338
Apr 202191720260.362.76$55,907
Mar 20211,43119661.302.72$88,253
Feb 202199621057.805.55$58,734
Jan 20211,11420250.412.81$56,724
Dec 20201,13216844.642.68$50,982
Nov 20201,36215738.772.71$53,230
Oct 20201,11917036.972.48$41,791
Sep 20201,45518437.091.99$54,332
Aug 20201,54619839.982.39$62,281
Jul 20201,36817038.371.83$52,800
Jun 20201,15316034.901.69$40,510
May 20201,55219216.921.81$26,608
Apr 20201,67921314.751.80$25,150
Mar 20201,26617930.341.86$38,743
Feb 20201,31518949.881.98$65,967
Jan 20201,44919157.252.09$83,355
Dec 20191,48519459.012.30$88,077
Nov 20191,53220955.302.75$85,295
Oct 20191,57021353.472.42$84,463
Sep 20191,42216055.052.66$78,706
Aug 20191,53218853.112.30$81,798
Jul 20191,46016456.272.46$82,558
Jun 20191,35014452.782.49$71,612
May 20191,59315258.482.74$93,575
Apr 20191,42613462.632.75$89,679
Mar 20191,38413756.803.06$79,031
Feb 20191,2217750.852.79$62,303
Jan 20191,5835646.033.23$73,046
Dec 20181,249046.594.19$58,191
Nov 20181,3322852.934.24$70,621
Oct 20181,41515761.443.40$87,471
Sep 20181,18916159.543.11$71,293
Aug 20181,37818159.403.07$82,408
Jul 20181,45519565.142.93$95,350
Jun 20181,59712460.183.08$96,489
May 20181,78915565.382.90$117,414
Apr 20181,85711663.842.90$118,887
Mar 20181,83010861.222.79$112,334
Feb 20181,835061.782.77$113,366
Jan 20181,87013762.874.01$118,116
Dec 20171,94715657.272.92$111,960
Nov 20171,94115255.423.12$108,044
Oct 20171,97110749.292.98$97,470
Sep 20171,80016447.523.09$86,042
Aug 20171,95118745.373.00$89,079
Jul 20172,00916443.873.09$88,641
Jun 20171,89812642.493.09$81,035
May 20172,1348245.373.26$97,087
Apr 20172,1074847.933.21$101,143
Mar 20171,9454046.772.98$91,087
Feb 20171,9707450.452.95$99,605
Jan 20171,8237649.413.42$90,334
Dec 20162,0892348.763.72$101,945
Nov 20162,103242.492.64$89,362
Oct 20162,092146.193.09$96,633
Sep 20162,030041.553.10$84,347
Aug 20162,2381441.442.92$92,784
Jul 20162,3342141.622.92$97,202
Jun 20162,166845.352.69$98,250
May 20162,024842.521.99$86,076
Apr 20162,0371336.561.99$74,499
Mar 20161,8591833.011.79$61,398
Feb 20161,8711126.472.06$49,548
Jan 20161,4321327.352.36$39,196
Dec 20151,7531932.362.00$56,765
Nov 20151,9291838.792.17$74,865
Oct 20151,9461643.552.43$84,787
Sep 20152,0553842.992.76$88,449
Aug 20152,0969740.162.87$84,454
Jul 20151,9566048.152.95$94,358
Jun 20151,9723056.152.88$110,814
May 20152,0831555.212.96$115,047
Apr 20151,8391749.822.71$91,665
Mar 20151,7292242.892.93$74,221
Feb 20151,5501844.662.98$69,277
Jan 20151,6254143.433.10$70,701
Dec 20141,7002954.693.59$93,077
Nov 20142,0266270.464.25$143,016
Oct 20142,2738578.303.90$178,307
Sep 20142,2858386.164.05$197,211
Aug 20142,60511989.394.04$233,341
Jul 20142,66611296.564.18$257,897
Jun 20141,9178898.164.74$188,590
May 20141,7884894.734.73$169,604
Apr 20141,942395.944.81$186,330
Mar 20142,041295.895.06$195,722
Feb 20142,180797.406.19$212,375
Jan 20142,6312190.404.86$237,944
Dec 20132,5153991.824.35$231,097
Nov 20132,0747888.853.74$184,566
Oct 20132,26912297.423.78$221,507
Sep 20132,382110104.113.72$248,399
Aug 20132,27575104.253.52$237,433
Jul 20131,969115102.523.72$202,289
Jun 20132,1929394.403.93$207,291
May 20132,3499094.834.15$223,129
Apr 20131,81510293.964.28$170,974
Mar 20132,31611193.623.91$217,258
Feb 20132,0319891.233.42$185,623
Jan 20132,1844891.603.42$200,219
Dec 20122,329086.773.42$202,087
Nov 20122,309086.953.62$200,768
Oct 20122,139089.383.40$191,184
Sep 20122,586094.672.92$244,817
Aug 20122,389092.662.91$221,365
Jul 20122,6557185.133.02$226,235
Jun 20122,2963779.822.52$183,360
May 20122,584091.612.49$236,720
Apr 20122,1350101.652.00$217,023
Mar 20121,9590105.052.22$205,793
Feb 20121,9890101.102.57$201,088
Jan 20122,481098.092.73$243,361
Dec 20112,360096.873.24$228,613
Nov 20112,205095.723.31$211,063
Oct 20111,979084.983.65$168,175
Sep 20111,655083.623.99$138,391
Aug 20112,590083.404.15$216,006
Jul 20112,674194.144.52$251,735
Jun 20112,632092.904.64$244,513
May 20112,368298.134.40$232,381
Apr 20112,15413105.964.33$228,294
Mar 20111,4061296.364.06$135,531
Feb 20119953785.644.18$85,366
Jan 20111,0692186.504.59$92,565
Dec 20109621785.734.35$82,546
Nov 20101,4593180.843.80$118,063
Oct 20101,1554478.103.51$90,360
Sep 20101,238372.633.98$89,928
Aug 20107574573.684.42$55,975
Jul 20101,06619372.554.74$78,252
Jun 20101,23720070.364.91$88,017
May 20101,30924971.124.24$94,151
Apr 20101,28720481.694.12$105,976
Mar 20101,46219478.394.39$115,458
Feb 20101,17417773.585.44$87,346
Jan 20101,70521974.365.96$128,090
Dec 20091,57118971.445.48$113,269
Nov 200992517674.593.75$69,656
Oct 200969622272.544.11$51,400
Sep 200960518165.543.06$40,206
Aug 200978615967.423.22$53,504
Jul 20091,02717461.133.46$63,383
Jun 20091,05419266.163.90$70,480
May 20091,30420354.743.93$72,178
Apr 20091,15019646.773.59$54,489
Mar 20091,53922742.144.06$65,775
Feb 20091,55919432.814.63$52,050
Jan 20091,7458535.865.37$63,032
Dec 20081,3528537.105.98$50,667
Nov 20081,46411655.496.86$82,033
Oct 20081,47822675.246.92$112,769
Sep 20081,412282101.767.88$145,906
Aug 20081,888269114.228.48$217,929
Jul 20081,934276131.0811.39$256,652
Jun 20082,356317131.3313.03$313,545
May 20081,841305123.1711.57$230,286
Apr 20081,847328110.3110.45$207,172
Mar 20082,303293101.909.66$237,507
Feb 20082,09729292.538.77$196,596
Jan 20082,35934290.388.21$216,013
Dec 20071,65227088.337.30$147,893
Nov 20071,75828691.677.29$163,241
Oct 20072,69934382.856.92$225,986
Sep 20072,033075.846.24$154,183
Aug 20072,2292,22969.066.39$168,173
Jul 20072,19723670.906.39$157,275
Jun 20072,34222562.007.55$146,902
May 20072,47625158.747.85$147,410
Apr 20072,86324659.617.81$172,584
Mar 20073,21327556.927.30$184,892
Feb 20073,00634455.108.22$168,457
Jan 20073,50032350.306.73$178,223
Dec 20063,06528856.656.92$175,625
Nov 20062,65421754.207.62$145,500
Oct 20062,99522054.906.01$165,749
Sep 20062,62620360.085.04$158,793
Aug 20062,42820068.717.34$168,296
Jul 20062,55426769.376.34$178,865
Jun 20063,16279166.286.38$214,627
May 20063,21180166.016.42$217,105
Apr 20063,47186864.397.36$229,887
Mar 20063,40085056.707.08$198,800
Feb 20063,29882557.597.75$196,326
Jan 20063,56189160.598.93$223,721
Dec 20053,85296354.9413.42$224,548
Nov 20053,64391054.6910.59$208,871
Oct 20053,38684758.3413.80$209,224
Sep 20053,13578561.4512.08$202,128
Aug 20053,89697561.519.80$249,195
Jul 20054,6801,17155.697.84$269,814
Jun 20054,2411,00252.337.38$229,327
May 20054,4631,11645.226.65$209,240
Apr 20054,7211,18149.207.36$240,966
Mar 20055,3052,65450.377.15$286,202
Feb 20054,9041,22645.226.31$229,497
Jan 20053,93198443.166.32$175,883
Dec 20044,6621,16639.866.75$193,699
Nov 20044,0491,01445.286.33$189,758
Oct 20042,79269849.706.52$143,310
Sep 20043,18779743.245.28$142,017
Aug 20043,31282842.375.55$144,925
Jul 20043,01175338.286.08$119,842
Jun 20042,73668536.106.43$103,176
May 20042,85171337.486.49$111,486
Apr 20042,72468234.475.86$97,892
Mar 20042,83470934.365.53$101,297
Feb 20042,84771832.455.51$96,341
Jan 20042,59364832.036.30$87,136
Dec 20032,90672630.266.30$92,511
Nov 20032,89072228.804.60$86,550
Oct 20032,95173828.174.76$86,642
Sep 20033,00375226.314.75$82,580
Aug 20032,86171629.765.13$88,816
Jul 20033,22780729.415.17$99,079
Jun 20033,19680028.565.98$96,064
May 20033,24481126.595.97$91,102
Apr 20032,95578026.675.41$83,028
Mar 20033,34283531.146.10$109,160
Feb 20032,82570733.487.93$100,185
Jan 20033,51687930.315.58$111,477
Dec 20023,4051,75226.914.85$100,132
Nov 20023,30382724.664.14$84,873
Oct 20023,230026.464.23$85,466
Sep 20023,14778627.443.64$89,211
Aug 20023,33083225.963.16$89,079
Jul 20023,39985024.583.06$86,150
Jun 20023,32683123.733.34$81,700
May 20023,15278824.663.58$80,553
Apr 20023,19079723.653.51$78,243
Mar 20023,25066322.003.10$73,557
Feb 20023,28782218.222.38$61,842
Jan 20023,46686717.172.38$61,571
Dec 20013,74088916.932.36$65,420
Nov 20013,69788518.072.41$68,934
Oct 20013,69389019.782.53$75,298
Sep 20013,58286024.262.25$88,835
Aug 20013,56589124.873.05$91,382
Jul 20012,86987523.933.20$71,453
Jun 20012,99785824.563.82$76,887
May 20013,44386125.524.31$91,574
Apr 20013,03575824.685.34$78,948
Mar 20013,19079824.545.38$82,573
Feb 20012,95373827.755.77$86,202
Jan 20013,34483527.478.40$98,873
Dec 20003,66691726.889.12$106,907
Nov 20003,43986032.215.66$115,636
Oct 20003,51988031.235.15$114,426
Sep 20003,31082831.875.19$109,784
Aug 20003,38583429.644.54$104,118
Jul 20003,43786028.534.09$101,575
Jun 20003,6464229.304.40$107,012
May 20003,38389427.263.68$95,510
Apr 20003,44686624.513.12$87,160
Mar 20003,37784428.422.86$98,388
Feb 20003,62290427.622.73$102,504
Jan 20003,48387225.272.48$90,178
Dec 19993,44986224.282.42$85,831
Nov 19993,50987723.192.43$83,508
Oct 19993,74593520.982.80$81,192
Sep 19993,70392621.752.62$82,965
Aug 19993,78094519.262.88$75,520
Jul 19993,01275317.892.37$55,671
Jun 19992,98874715.942.36$49,393
May 19993,22181415.792.32$52,749
Apr 19993,35483915.102.21$52,498
Mar 19993,54588712.471.84$45,837
Feb 19993,1177829.981.82$32,529
Jan 19993,26181810.381.90$35,403
Dec 19982,6762259.201.77$25,018
Nov 19983,17780610.892.19$36,359
Oct 19983,24082212.421.97$41,859
Sep 19983,20981812.592.08$42,105
Aug 19983,04777611.301.91$35,911
Jul 19983,00676711.742.24$37,006
Jun 19982,96474811.242.24$34,989
May 19983,43886712.622.21$45,300
Apr 19983,11778613.042.51$42,615
Mar 19983,96399112.802.31$53,015
Feb 19983,07576813.952.30$44,662
Jan 19983,42485814.702.15$52,182
Dec 19973,55289516.322.41$60,127
Nov 19973,21382218.193.09$60,983
Oct 19972,96975819.253.15$59,541
Sep 19973,02679017.742.95$56,016
Aug 19972,98376717.862.55$55,236
Jul 19973,81597517.582.25$69,258
Jun 19973,16589617.242.26$56,587
May 19973,93995118.972.31$76,918
Apr 19973,00975617.882.08$55,376
Mar 19973,38985518.951.94$65,880
Feb 19973,13479120.492.21$65,961
Jan 19973,20780923.483.54$78,164
Dec 19963,67792123.32$85,748
Nov 19963,31082821.97$72,721
Oct 19963,68092023.31$85,781
Sep 19963,53688922.22$78,570
Aug 19963,91496920.26$79,298
Jul 19963,9261,28619.55$76,753
Jun 19963,8351,39518.73$71,830
May 19963,8351,28219.43$74,514
Apr 19964,0351,01521.51$86,793
Mar 19963,32586519.38$64,439
Feb 19964,2121,13116.98$71,520
Jan 19963,05176717.07$52,081
Dec 19954,016017.19$69,035
Nov 19953,509016.00$56,144
Oct 19953,284015.43$50,672
Sep 19953,48289716.18$56,339
Aug 19953,94562115.92$62,804
Jul 19952,79183815.24$42,535
Jun 19953,56075716.41$58,420
May 19953,85674117.56$67,711
Apr 19953,78575117.73$67,108
Mar 19953,58878316.44$58,987
Feb 19953,35573216.58$55,626
Jan 19953,96383715.92$63,091
Dec 19943,915115.03$58,842
Nov 19943,964115.90$63,028
Oct 19944,874115.58$75,937
Sep 19943,758115.29$57,460
Aug 19943,931116.13$63,407
Jul 19943,893117.56$68,361
Jun 19943,871117.09$66,155
May 19944,015115.88$63,758
Apr 19943,85574714.14$54,510
Mar 19944,12359612.46$51,373
Feb 19943,18665212.50$39,825
Jan 19943,65763612.66$46,298
Dec 19933,58265812.33$44,166
Nov 19933,70265814.49$53,642
Oct 19933,91671015.85$62,069
Sep 19933,93872715.03$59,188
Aug 19933,92779615.66$61,497
Jul 19933,91770215.46$60,557
Jun 19933,95777116.79$66,438
May 19934,26378117.68$75,370
Apr 19934,30272418.05$77,651
Mar 19934,22690518.14$76,660
Feb 19933,87290817.90$69,309
Jan 19934,17080216.93$70,598

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                  754 bbl  × $106.41 =    $80,233
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $80,233

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. 8A/O/579 is the state's own key, not one this site invented.