COBB, TOM "A"

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

Oil lease lease 64143District 8AField 99343001OilCasinghead gasSave
Value, all time
$21.6 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

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
OilDisposition445,004 bbl$21,349,093
Casinghead gasProduction104,284 Mcf$260,595
Total$21,609,688

41,307 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 (11)

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 33.6402, -102.4193. A lease has no coordinate of its own — that point is the mean of its wells, and they span 80.7 miles, so treat it as the lease's centre and not as its location.

33.16940, -102.14708 · 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
72.7%
8 of 11 wells
With a plug date
72.7%
8 of 11 wells
Median depth
4,700 ft
11 wells filed one
Completion to plug
5.2 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
872.7%
A plug date is filed
872.7%
BothOn the schedule and plugged. Neither fact cancels the other.
872.7%
NeitherNo plug date, and not on the schedule.
327.3%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 11 of 11 wells. Median 4,700 ft, with the middle half between 4,683 and 4,700 ft; the shallowest is 4,668 ft and the deepest 8,641 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

80s
90s
00s
10s
20s

Last completion by decade, 11 of 11 wells, Nov 1982 – Sep 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
Nov 1982 – Sep 2025
11 of 11 wells
Plug dates filed
Mar 1986 – Nov 2024
8 of 11 wells; 3 filed none

Last completion to plug: a median of 5.2 years across the 8 wells that filed both dates, with the middle half between 2.8 years and 17.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

11 wells

42-115340556H8,641 ftSep 2025
42-21934890114,671 ftJul 2014Nov 2024Yes
42-2193370154,683 ftFeb 2012
42-21934989124,688 ftOct 1986Jul 1989Yes
42-21934830104,700 ftSep 1985Oct 2024Yes
42-2193432594,700 ftNov 1984Jun 1988Yes
42-2193432474,700 ftJun 1984Mar 1986Yes
42-2193369744,710 ftMay 1983Mar 1986Yes
42-2193368124,682 ftFeb 1983Sep 2022Yes
42-2193370034,668 ftFeb 1983
42-2193365014,700 ftNov 1982Jul 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 (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 2022336162101.587.54$35,353
Jun 2022353147115.097.98$41,799
May 2022170119109.378.43$19,596
Apr 2022360137104.226.84$38,456
Mar 2022176134108.885.08$19,843
Feb 20221818991.054.86$16,912
Jan 202252118281.844.54$43,465
Dec 202133822071.323.90$24,964
Nov 202151619777.435.24$40,986
Oct 202106079.795.71$343
Sep 2021173069.865.35$12,086
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 2021172057.805.55$9,942
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 2020351038.772.71$13,608
Oct 2020349036.972.48$12,903
Sep 2020350037.091.99$12,982
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 2020352034.901.69$12,285
May 2020347016.921.81$5,871
Apr 20201,368014.751.80$20,178
Mar 20201,028030.341.86$31,190
Feb 2020853049.881.98$42,548
Jan 20201,011057.252.09$57,880
Dec 2019678059.012.30$40,009
Nov 20191,0151555.302.75$56,171
Oct 20191,3641553.472.42$72,969
Sep 20191,007855.052.66$55,457
Aug 2019677053.112.30$35,955
Jul 2019508056.272.46$28,585
Jun 20191,194152.782.49$63,022
May 2019683058.482.74$39,942
Apr 20191,347062.632.75$84,363
Mar 20191,191056.803.06$67,649
Feb 20191,0173550.852.79$51,812
Jan 20191,1916046.033.23$55,015
Dec 201885516246.594.19$40,512
Nov 20181,35720652.934.24$72,699
Oct 20181,17625061.443.40$73,103
Sep 201899614859.543.11$59,762
Aug 20181,35812559.403.07$81,049
Jul 20181,19912165.142.93$78,458
Jun 20181,37125460.183.08$83,288
May 20181,02911465.382.90$67,607
Apr 20181,360063.842.90$86,822
Mar 20181,187061.222.79$72,668
Feb 20181,191061.782.77$73,580
Jan 20181,19511862.874.01$75,603
Dec 20171,1889457.272.92$68,311
Nov 20171,36615155.423.12$76,175
Oct 20171,53723749.292.98$76,466
Sep 20171,02515747.523.09$49,193
Aug 20171,53426445.373.00$70,391
Jul 20171,53529343.873.09$68,245
Jun 20171,00111042.493.09$42,872
May 20172,05518145.373.26$93,826
Apr 201784911947.933.21$41,075
Mar 20171,36220746.772.98$64,318
Feb 20171,02010050.452.95$51,754
Jan 20171,36310949.413.42$67,718
Dec 20161,70816048.763.72$83,878
Nov 20161,18916642.492.64$50,960
Oct 20161,54222646.193.09$71,923
Sep 20161,1957141.553.10$49,872
Aug 20161,36325441.442.92$57,226
Jul 20161,36818541.622.92$57,477
Jun 20161,53019045.352.69$69,896
May 20161,02327042.521.99$44,036
Apr 20161,19528336.561.99$44,253
Mar 20161,53218433.011.79$50,901
Feb 201667918826.472.06$18,361
Jan 20161,18520427.352.36$32,892
Dec 201584917232.362.00$27,818
Nov 20151,53218638.792.17$59,829
Oct 20151,0149543.552.43$44,390
Sep 20151,1768942.992.76$50,802
Aug 20151,34825140.162.87$54,857
Jul 20151,18822648.152.95$57,868
Jun 20151,35124056.152.88$76,551
May 20151,01621055.212.96$56,714
Apr 20151,35427949.822.71$68,211
Mar 20151,52624042.892.93$66,154
Feb 20151,18218044.662.98$53,324
Jan 20151,69715243.433.10$74,172
Dec 20141,19616154.693.59$65,987
Nov 20141,35919470.464.25$96,580
Oct 20141,68732978.303.90$133,376
Sep 20141,01611386.164.05$87,996
Aug 20141,1864289.394.04$106,186
Jul 20145072896.564.18$49,073
Jun 201467210098.164.74$66,437
May 20141,18622194.734.73$113,394
Apr 201483913395.944.81$81,133
Mar 20141,18017295.895.06$114,020
Feb 20141,19712097.406.19$117,331
Jan 20141,36014590.404.86$123,649
Dec 20131,88222591.824.35$173,785
Nov 201383920588.853.74$75,312
Oct 20131,53027797.423.78$150,099
Sep 20131,360258104.113.72$142,549
Aug 20131,523316104.253.52$159,886
Jul 20131,714470102.523.72$177,467
Jun 201384516894.403.93$80,429
May 20131,01420194.834.15$96,992
Apr 20131,19223693.964.28$113,011
Mar 20131,3464193.623.91$126,173
Feb 201368513391.233.42$62,947
Jan 20131,54821491.603.42$142,529
Dec 20121,54623386.773.42$134,943
Nov 201281917586.953.62$71,846
Oct 20121,52825889.383.40$137,450
Sep 20121,20919294.672.92$115,016
Aug 20121,19019692.662.91$110,835
Jul 20121,54317985.133.02$131,896
Jun 20121,03115679.822.52$82,687
May 20121,20213191.612.49$110,441
Apr 20121,375212101.652.00$140,192
Mar 20121,197284105.052.22$126,376
Feb 2012849216101.102.57$86,389
Jan 20121,53019898.092.73$150,619
Dec 201186012596.873.24$83,713
Nov 20111,19210895.723.31$114,456
Oct 20111,53719884.983.65$131,337
Sep 20111,03218083.623.99$87,013
Aug 20111,00918983.404.15$84,935
Jul 20111,72019094.144.52$162,779
Jun 20111,38420192.904.64$129,506
May 20111,21721198.134.40$120,354
Apr 20111,393187105.964.33$148,413
Mar 20111,20324696.364.06$116,919
Feb 20111,38120585.644.18$119,126
Jan 20111,55522186.504.59$135,522
Dec 20101,38823685.734.35$120,019
Nov 20101,56529180.843.80$127,619
Oct 20101,39332178.103.51$109,920
Sep 20101,21829172.633.98$89,621
Aug 20101,744073.684.42$128,498
Jul 20101,21119672.554.74$88,786
Jun 20101,20325970.364.91$85,915
May 20101,37217571.124.24$98,318
Apr 20101,71915281.694.12$141,052
Mar 20101,19614278.394.39$94,378
Feb 20101,54515973.585.44$114,546
Jan 20101,19020274.365.96$89,693
Dec 20091,20915371.445.48$87,210
Nov 20091,56516874.593.75$117,364
Oct 20091,39524272.544.11$102,188
Sep 20091,22018565.543.06$80,526
Aug 20091,56823967.423.22$106,484
Jul 20091,38013361.133.46$84,820
Jun 20091,03321066.163.90$69,161
May 20091,73921054.743.93$96,017
Apr 20091,21518046.773.59$57,471
Mar 20091,39412942.144.06$59,267
Feb 20091,54712132.814.63$51,318
Jan 20091,54412135.865.37$56,018
Dec 20081,53417337.105.98$57,945
Nov 20081,20214555.496.86$67,694
Oct 20081,37213275.246.92$104,143
Sep 20081,209157101.767.88$124,265
Aug 20081,7460114.228.48$199,428
Jul 20081,555198131.0811.39$206,085
Jun 20081,553225131.3313.03$206,888
May 20081,739162123.1711.57$216,068
Apr 20081,552265110.3110.45$173,972
Mar 20081,562200101.909.66$161,101
Feb 20081,54411992.538.77$143,910
Jan 20081,88317790.388.21$171,638
Dec 20071,016088.337.30$89,743
Nov 20071,56120591.677.29$144,592
Oct 20071,57134782.856.92$132,559
Sep 20071,50928275.846.24$116,203
Aug 20071,72528669.066.39$120,955
Jul 20071,71227570.906.39$123,137
Jun 20071,71236662.007.55$108,907
May 20071,90124258.747.85$113,564
Apr 20071,90418759.617.81$114,957
Mar 20071,39020256.927.30$80,594
Feb 20071,91619355.108.22$107,157
Jan 20072,05914150.306.73$104,516
Dec 20061,38624956.656.92$80,240
Nov 20061,38720754.207.62$76,752
Oct 20061,92527054.906.01$107,306
Sep 20061,93021960.085.04$117,058
Aug 20061,74825668.717.34$121,984
Jul 20061,93526269.376.34$135,893
Jun 20061,38325766.286.38$93,306
May 20061,708066.016.42$112,745
Apr 20062,06529464.397.36$135,129
Mar 20061,74723256.707.08$100,698
Feb 20061,89225457.597.75$110,929
Jan 20061,88428060.598.93$116,653
Dec 20052,25644254.9413.42$129,874
Nov 20051,714054.6910.59$93,739
Oct 20051,41320958.3413.80$85,318
Sep 20051,40716861.4512.08$88,489
Aug 20051,55718761.519.80$97,603
Jul 20051,38121855.697.84$78,618
Jun 20051,39713752.337.38$74,116
May 20051,190045.226.65$53,812
Apr 20051,18913349.207.36$59,478
Mar 20050050.377.15$0
Feb 20058601745.226.31$38,997
Jan 20051,752843.166.32$75,667
Dec 20041,233439.866.75$49,174
Nov 20041,56217545.286.33$71,835
Oct 20041,97518749.706.52$99,376
Sep 20042,30421843.245.28$100,777
Aug 20041,41028442.375.55$61,318
Jul 20041,43721338.286.08$56,304
Jun 20041,61127436.106.43$59,920
May 20041,07614937.486.49$41,296
Apr 20041,44820034.475.86$51,084
Mar 20041,79426334.365.53$63,096
Feb 20041,42018232.455.51$47,082
Jan 20041,69025732.036.30$55,750
Dec 20031,43021030.266.30$44,595
Nov 20031,27219228.804.60$37,516
Oct 20031,99513828.174.76$56,856
Sep 20031,47510326.314.75$39,296
Aug 20031,46112029.765.13$44,095
Jul 20031,82816629.415.17$54,620
Jun 20031,25224028.565.98$37,193
May 20031,47229226.595.97$40,885
Apr 20031,81725926.675.41$49,860
Mar 20031,79925431.146.10$57,569
Feb 20031,08216233.487.93$37,509
Jan 200391415030.315.58$28,541
Dec 20026894426.914.85$18,755
Nov 20021,09814524.664.14$27,677
Oct 200255323126.464.23$15,609
Sep 20022,03223227.443.64$56,601
Aug 20021,36419925.963.16$36,039
Jul 20021,41922224.583.06$35,559
Jun 200288061423.733.34$22,932
May 20021,39925924.663.58$35,428
Apr 20021,57032023.653.51$38,254
Mar 20021,89641322.003.10$42,993
Feb 20021,05026518.222.38$19,761
Jan 20021,70225617.172.38$29,832
Dec 20011,53931716.932.36$26,805
Nov 20011,04538418.072.41$19,807
Oct 20011,92559819.782.53$39,589
Sep 20011,40174424.262.25$35,663
Aug 20011,75463624.873.05$45,564
Jul 20011,74954523.933.20$43,596
Jun 20011,23155924.563.82$32,371
May 200151918525.524.31$14,042
Apr 20011,04514424.685.34$26,559
Mar 20011,23020324.545.38$31,276
Feb 20011725127.755.77$5,067
Jan 20011,22511427.478.40$34,608
Dec 200017611526.889.12$5,780
Nov 20001,39210132.215.66$45,408
Oct 20001,04218931.235.15$33,514
Sep 20001,92324331.875.19$62,546
Aug 20001,75818629.644.54$52,952
Jul 20001,73524828.534.09$50,514
Jun 20001,2258729.304.40$36,275
May 20001,42225127.263.68$39,687
Apr 20001,76332924.513.12$44,236
Mar 200071039928.422.86$21,319
Feb 20001,41339427.622.73$40,101
Jan 20001,21930025.272.48$31,548
Dec 199987820424.282.42$21,812
Nov 19991,05426923.192.43$25,097
Oct 19991,40942420.982.80$30,750
Sep 19991,05638621.752.62$23,979
Aug 199987842019.262.88$18,118
Jul 19991,22445817.892.37$22,984
Jun 19991,23850315.942.36$20,922
May 19991,57541115.792.32$25,823
Apr 199987647115.102.21$14,268
Mar 19991,38945212.471.84$18,152
Feb 19991,3972159.981.82$14,333
Jan 19991,75216310.381.90$18,495
Dec 19988901799.201.77$8,505
Nov 19981,56516810.892.19$17,410
Oct 199853215612.421.97$6,915
Sep 19981,23820212.592.08$16,007
Aug 19981,22127611.301.91$14,324
Jul 19981,23266011.742.24$15,940
Jun 19981,38480011.242.24$17,346
May 199887881212.622.21$12,872
Apr 19981,39334313.042.51$19,024
Mar 199849837012.802.31$7,229
Feb 199834731713.952.30$5,569
Jan 199887836814.702.15$13,700
Dec 19971,02651216.322.41$17,979
Nov 199734638218.193.09$7,473
Oct 19971,56964519.253.15$32,235
Sep 199788162917.742.95$17,488
Aug 19971,05257617.862.55$20,260
Jul 19971,06048317.582.25$19,720
Jun 19971,57650317.242.26$28,306
May 19971,03243418.972.31$20,579
Apr 19971,75146817.882.08$32,283
Mar 19971,37948318.951.94$27,069
Feb 19971,04448920.492.21$22,470
Jan 19971,03264423.483.54$26,511
Dec 19962,08459723.32$48,599
Nov 199685750221.97$18,828
Oct 19961,22247523.31$28,485
Sep 19961,88240122.22$41,818
Aug 19961,04148020.26$21,091
Jul 19961,92851419.55$37,692
Jun 19961,05765918.73$19,798
May 19962,10962519.43$40,978
Apr 199687739321.51$18,864
Mar 19961,56846019.38$30,388
Feb 19961,04748716.98$17,778
Jan 19961,04350517.07$17,804
Dec 19951,39254817.19$23,928
Nov 19951,40761716.00$22,512
Oct 19951,72770115.43$26,648
Sep 19951,58289116.18$25,597
Aug 19951,4041,01315.92$22,352
Jul 19951,4101,28315.24$21,488
Jun 19951,7281,33416.41$28,356
May 19951,5671,48817.56$27,517
Apr 19951,3981,10417.73$24,787
Mar 19951,3631,03216.44$22,408
Feb 19951,1841,24916.58$19,631
Jan 19951,87579215.92$29,850
Dec 19941,83352915.03$27,550
Nov 199485273215.90$13,547
Oct 19941,87381715.58$29,181
Sep 19941,2011,22415.29$18,363
Aug 19941,7481,38116.13$28,195
Jul 19941,7241,31717.56$30,273
Jun 19941,3951,52217.09$23,841
May 19941,5261,05115.88$24,233
Apr 19941,05386314.14$14,889
Mar 19942,02693312.46$25,244
Feb 19941,04938212.50$13,113
Jan 19941,39950212.66$17,711
Dec 19931,74846412.33$21,553
Nov 19932,09093514.49$30,284
Oct 19931,05185815.85$16,658
Sep 19931,05185515.03$15,797
Aug 19931,7591,35215.66$27,546
Jul 19931,5781,40115.46$24,396
Jun 19931,9241,40316.79$32,304
May 19931,7591,12317.68$31,099
Apr 19931,05397518.05$19,007
Mar 19932,08695918.14$37,840
Feb 19931,04974617.90$18,777
Jan 19931,39483316.93$23,600

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.

Jul 2022 — as filed, then multipliedworked
Oil                  336 bbl  × $101.58 =    $34,131
Casinghead gas       162 Mcf  × $  7.54 =     $1,222

────────────────────────────────────────────────────
Month total                                  $35,353

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/64143 is the state's own key, not one this site invented.