LAMBERT, M. F.

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the TOM OCONNOR (5500 SAND) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 2590District 02Field 90534725OilCasinghead gasSave
Value, all time
$26.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$252 k
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
OilDisposition447,029 bbl$22,586,379
Casinghead gasProduction1,581,098 Mcf$4,164,977
Total$26,751,356

699,540 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 (50)

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 28.3404, -97.1797. A lease has no coordinate of its own — that point is the mean of its wells, and they span 2.6 miles.

28.34280, -97.18247 · 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
86.0%
43 of 50 wells
With a plug date
8.0%
4 of 50 wells
Median depth
5,901 ft
47 wells filed one
Completion to plug
18.2 years
median over 4 wells

What the state filed about each well

On the RRC proration schedule
4386.0%
A plug date is filed
48.0%
BothOn the schedule and plugged. Neither fact cancels the other.
48.0%
NeitherNo plug date, and not on the schedule.
714.0%

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

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

Total depth in feet, 47 of 50 wells. Median 5,901 ft, with the middle half between 5,840 and 5,935 ft; the shallowest is 5,157 ft and the deepest 8,288 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

70s
80s
90s
00s
10s
20s

Last completion by decade, 48 of 50 wells, Nov 1973 – Oct 2024. 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 1973 – Oct 2024
48 of 50 wells; 2 filed none
Plug dates filed
May 2001 – May 2025
4 of 50 wells; 46 filed none

Last completion to plug: a median of 18.2 years across the 4 wells that filed both dates, with the middle half between 13.8 years and 23.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

50 wells

42-3910123996 U
42-3910149298
42-39101423365,912 ftOct 2024Yes
42-391327001596,215 ftOct 2023Yes
42-391014421015,850 ftSep 2023Yes
42-39101381435,905 ftSep 2023Yes
42-391013961075,840 ftSep 2023Yes
42-391014441035,840 ftMay 2023Yes
42-391326962128,288 ftJan 2023Yes
42-391013981095,835 ftDec 2022Yes
42-391325901546,200 ftAug 2022Yes
42-391013951065,825 ftAug 2022Yes
42-39101427425,910 ftMar 2021Yes
42-391305991426,032 ftMar 2021Yes
42-39101422255,901 ftMar 2021
42-391014411006,000 ftJun 2020Yes
42-39101380395,904 ftDec 2019Yes
42-391013941055,845 ftNov 2019Yes
42-39101401123 U5,865 ftDec 2018Yes
42-39101440995,835 ftOct 2018Yes
42-3910134563 U5,915 ftMar 2018Yes
42-39101491345,915 ftMay 2017Yes
42-39101445119 U5,825 ftMay 2017Yes
42-391318882016,200 ftJun 2015Yes
42-39101490325,912 ftJun 2015Yes
42-391326831586,500 ftSep 2013
42-39101397108 U5,965 ftMay 2012Yes
42-391013991205,840 ftAug 2011Yes
42-391013551115,825 ftApr 2011May 2025Yes
42-391013931045,820 ftFeb 2011Yes
42-391013591265,845 ftJul 2010Yes
42-391303951406,025 ftJul 2009Yes
42-39101385475,919 ftJun 2009Yes
42-39101343585,915 ftJun 2009Yes
42-391014431025,855 ftSep 2008Yes
42-391013561125,850 ftSep 2008Yes
42-39101447125 U5,840 ftMar 2008Yes
42-391013541105,157 ftJul 2006Yes
42-39101382445,910 ftJan 2006
42-391014941185,835 ftDec 2005Yes
42-39101493116 U5,850 ftSep 2004Yes
42-39101236975,840 ftMar 2002Dec 2014Yes
42-391014001215,845 ftFeb 1986Yes
42-39101358124 U5,855 ftSep 1984Yes
42-39101357114Aug 1979Yes
42-391012371155,931 ftJun 1979Aug 2001Yes
42-39131265H1105,962 ftAug 1978
42-39131210H1075,972 ftMar 1978
42-391013311135,860 ftMay 1976Yes
42-3910138648 U5,938 ftNov 1973May 2001Yes

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 20263363106.413.05$35,763
Apr 2026130398.932.87$12,870
Mar 2026257389.753.15$23,075
Feb 2026321363.503.75$20,395
Jan 2026347759.138.00$20,574
Dec 2025326356.664.41$18,484
Nov 2025328058.593.93$19,218
Oct 2025419059.383.30$24,880
Sep 2025391262.743.08$24,537
Aug 2025453463.933.01$28,972
Jul 2025342966.743.32$22,855
Jun 20250066.483.13$0
May 20250160.553.23$3
Apr 2025286862.363.54$17,863
Mar 20254281167.704.27$29,023
Feb 2025421670.884.34$29,867
Jan 202525912074.324.28$19,762
Dec 202447512868.993.12$33,170
Nov 20244381369.052.20$30,272
Oct 20244821471.372.28$34,432
Sep 2024393069.612.36$27,357
Aug 20243991175.632.06$30,199
Jul 2024400379.932.15$31,978
Jun 20243671678.082.63$28,698
May 20243963878.812.20$31,292
Apr 20243482184.451.66$29,423
Mar 20243915780.301.55$31,485
Feb 20243547176.091.78$27,063
Jan 202439622273.023.30$29,648
Dec 202339128371.262.61$28,601
Nov 202337224177.892.81$29,652
Oct 2023218085.443.09$18,626
Sep 202323219789.042.74$21,196
Aug 202330621080.522.67$25,200
Jul 202324659074.852.64$19,972
Jun 202326731268.962.26$19,117
May 202333444370.622.23$24,574
Apr 20233609078.122.24$28,325
Mar 20233884572.852.39$28,373
Feb 202338391275.112.47$31,016
Jan 202355243276.533.39$43,708
Dec 202238647276.415.73$32,198
Nov 202253952485.005.65$48,774
Oct 202251231087.185.86$46,454
Sep 202250156684.888.16$47,146
Aug 202245743094.529.13$47,120
Jul 2022429337101.587.54$46,120
Jun 202219661115.097.98$23,044
May 2022459117109.378.43$51,188
Apr 20225950104.226.84$62,011
Mar 20226140108.885.08$66,852
Feb 2022585091.054.86$53,264
Jan 20226923181.844.54$56,774
Dec 2021654071.323.90$46,643
Nov 20215812477.435.24$45,113
Oct 20215417279.795.71$43,578
Sep 2021496069.865.35$34,651
Aug 20215115066.024.22$33,947
Jul 20215137070.783.98$36,589
Jun 2021439069.493.38$30,506
May 2021373063.483.02$23,678
Apr 20212352460.362.76$14,251
Mar 20214623761.302.72$28,421
Feb 20213876857.805.55$22,746
Jan 202169961750.412.81$36,971
Dec 2020755044.642.68$33,703
Nov 2020737038.772.71$28,573
Oct 2020578036.972.48$21,369
Sep 2020541037.091.99$20,066
Aug 2020687039.982.39$27,466
Jul 2020801038.371.83$30,734
Jun 2020974034.901.69$33,993
May 20207462116.921.81$12,660
Apr 2020690014.751.80$10,178
Mar 2020855030.341.86$25,941
Feb 20209148249.881.98$45,753
Jan 20209646857.252.09$55,331
Dec 201985338459.012.30$51,220
Nov 201961510155.302.75$34,287
Oct 201972423953.472.42$39,290
Sep 201982820255.052.66$46,118
Aug 20197645353.112.30$40,698
Jul 20197176256.272.46$40,498
Jun 2019622452.782.49$32,839
May 20199534558.482.74$55,855
Apr 201981517262.632.75$51,517
Mar 201979790556.803.06$48,041
Feb 201983220750.852.79$42,885
Jan 20191,01253446.033.23$48,306
Dec 201895740446.594.19$46,278
Nov 20181,085052.934.24$57,429
Oct 20181,16919561.443.40$72,486
Sep 2018947059.543.11$56,384
Aug 201898725459.403.07$59,407
Jul 20181,0063,54765.142.93$75,930
Jun 20189441,91260.183.08$62,693
May 201887942365.382.90$58,696
Apr 201878385663.842.90$52,470
Mar 20181,0151,94161.222.79$67,548
Feb 20189701,75561.782.77$64,781
Jan 20181,0502,20562.874.01$74,854
Dec 20178184,39157.272.92$59,675
Nov 201798924355.423.12$55,568
Oct 20171,0761,35849.292.98$57,088
Sep 2017305047.523.09$14,494
Aug 201780150445.373.00$37,856
Jul 201784737043.873.09$38,300
Jun 201759143242.493.09$26,445
May 20176621,37945.373.26$34,535
Apr 20177391,43847.933.21$40,039
Mar 20178351,07746.772.98$42,266
Feb 20177861,10150.452.95$42,905
Jan 201790037349.413.42$45,744
Dec 20169249848.763.72$45,419
Nov 20161,08110342.492.64$46,204
Oct 20161,12160246.193.09$53,639
Sep 20161,0741,19541.553.10$48,330
Aug 20161,0711,30441.442.92$48,196
Jul 20161,03169441.622.92$44,940
Jun 201679394045.352.69$38,487
May 20167841,07942.521.99$35,484
Apr 20169832,44636.561.99$40,809
Mar 20161,00868033.011.79$34,494
Feb 20161,04992426.472.06$29,674
Jan 20161,5241,78327.352.36$45,897
Dec 20151,5592,27432.362.00$55,000
Nov 20159891,06038.792.17$40,661
Oct 20151,1424,44443.552.43$60,518
Sep 20151,2375,13242.992.76$67,335
Aug 20151,1923,66540.162.87$58,398
Jul 20151,6973,45748.152.95$91,892
Jun 20151,3774,95656.152.88$91,606
May 20151,6364,75255.212.96$104,368
Apr 20151,6786,19449.822.71$100,362
Mar 20151,1674,65242.892.93$63,705
Feb 20151,1333,11344.662.98$59,865
Jan 20151,2484,00243.433.10$66,609
Dec 20141,2864,37854.693.59$86,054
Nov 20141,4132,85570.464.25$111,699
Oct 20141,8372,34078.303.90$152,965
Sep 20141,3672,58086.164.05$128,218
Aug 20147692,44089.394.04$78,587
Jul 20147943,00096.564.18$89,207
Jun 20147512,29698.164.74$84,594
May 20149013,60694.734.73$102,396
Apr 20149671,92495.944.81$102,027
Mar 20141,25312195.895.06$120,762
Feb 20141,3831,09997.406.19$141,509
Jan 20141,4532,08790.404.86$141,496
Dec 20131,4042,65391.824.35$140,468
Nov 20131,4842,14688.853.74$139,876
Oct 20131,6252,93497.423.78$169,396
Sep 20131,3592,917104.113.72$152,330
Aug 20137532,039104.253.52$85,683
Jul 20138011,526102.523.72$87,792
Jun 20137911,52894.403.93$80,681
May 20137952,09794.834.15$84,090
Apr 20138021,19593.964.28$80,474
Mar 201381858593.623.91$78,870
Feb 201366564791.233.42$62,881
Jan 201365492391.603.42$63,063
Dec 20127361,19286.773.42$67,940
Nov 201273480686.953.62$66,743
Oct 20121,13083389.383.40$103,831
Sep 20121,2441,56694.672.92$122,340
Aug 20121,25754692.662.91$118,061
Jul 20121,07471185.133.02$93,577
Jun 20121,0291,07379.822.52$84,838
May 20121,0781,32791.612.49$102,058
Apr 20121,1542,842101.652.00$122,979
Mar 20121,0501,750105.052.22$114,191
Feb 2012875996101.102.57$91,022
Jan 20121,03955998.092.73$103,444
Dec 20111,12653996.873.24$110,822
Nov 20111,1141,01395.723.31$109,986
Oct 20111,1841,26584.983.65$105,232
Sep 20111,3411,88783.623.99$119,656
Aug 20111,3621,44283.404.15$119,574
Jul 20111,1471,61494.144.52$115,269
Jun 20111,2611,57192.904.64$124,436
May 20111,42199998.134.40$143,843
Apr 2011717772105.964.33$79,319
Mar 201183459396.364.06$82,770
Feb 201167557485.644.18$60,206
Jan 201172679086.504.59$66,424
Dec 201076875085.734.35$69,101
Nov 201080045580.843.80$66,399
Oct 201081271778.103.51$65,933
Sep 201081493572.633.98$62,842
Aug 20101,0911,22073.684.42$85,777
Jul 20107961,87672.554.74$66,635
Jun 201083980470.364.91$62,980
May 201078593171.124.24$59,772
Apr 20108032,25381.694.12$74,885
Mar 20101,0674,45578.394.39$103,194
Feb 201081363573.585.44$63,276
Jan 20101,3381,76474.365.96$110,014
Dec 20091,0871,11471.445.48$83,764
Nov 20091,01369174.593.75$78,152
Oct 20091,0311,04472.544.11$79,080
Sep 200992261465.543.06$62,310
Aug 20091,02287067.423.22$71,703
Jul 20091,3721,01761.133.46$87,394
Jun 20091,01067766.163.90$69,459
May 20091,13757954.743.93$64,512
Apr 20091,19774146.773.59$58,642
Mar 20091,25783042.144.06$56,339
Feb 20091,1981,10632.814.63$44,430
Jan 20091,2241,11035.865.37$49,854
Dec 20081,6291,34637.105.98$68,481
Nov 20081,6021,42955.496.86$98,698
Oct 20081,5911,52275.246.92$130,242
Sep 20081,1651,525101.767.88$130,563
Aug 20081,4131,921114.228.48$177,689
Jul 20081,8002,175131.0811.39$260,716
Jun 20081,8051,825131.3313.03$260,835
May 20082,0012,204123.1711.57$271,973
Apr 20082,1543,979110.3110.45$279,208
Mar 20081,9183,832101.909.66$232,477
Feb 20081,6843,19692.538.77$183,851
Jan 20082,3352,68290.388.21$233,045
Dec 20072,2051,90788.337.30$208,693
Nov 20072,2072,46091.677.29$220,253
Oct 20072,5783,28982.856.92$236,354
Sep 20072,4953,87875.846.24$213,436
Aug 20072,4283,66469.066.39$191,083
Jul 20072,3793,35970.906.39$190,128
Jun 20072,5563,53962.007.55$185,186
May 20072,3493,44158.747.85$164,979
Apr 20072,0254,02059.617.81$152,087
Mar 20071,8315,73556.927.30$146,097
Feb 20072,0974,84455.108.22$155,343
Jan 20072,6054,96050.306.73$164,397
Dec 20062,9474,86156.656.92$200,578
Nov 20062,5566,06054.207.62$184,697
Oct 20062,7157,67654.906.01$195,215
Sep 20062,6866,00060.085.04$191,598
Aug 20063,1586,08268.717.34$261,628
Jul 20063,9558,16869.376.34$326,166
Jun 20061,3927,77066.286.38$141,865
May 20061,3938,64466.016.42$147,490
Apr 20061,8278,22064.397.36$178,144
Mar 20062,04212,47256.707.08$204,120
Feb 20061,7117,67357.597.75$158,011
Jan 20061,7487,48860.598.93$172,804
Dec 20051,7106,26254.9413.42$177,955
Nov 20051,85913,89054.6910.59$248,742
Oct 20051,9193,00158.3413.80$153,356
Sep 20051,23320,75461.4512.08$326,455
Aug 20051,8523,77861.519.80$150,929
Jul 20051,3862,96055.697.84$100,404
Jun 20051,7961,98252.337.38$108,614
May 20052,5783,13145.226.65$137,402
Apr 20052,3652,87949.207.36$137,549
Mar 20052,3122,85350.377.15$136,868
Feb 20052,1193,50045.226.31$117,913
Jan 20052,2053,31743.166.32$116,139
Dec 20042,1783,22539.866.75$108,587
Nov 20042,6422,35145.286.33$134,513
Oct 20043,7267,84149.706.52$236,267
Sep 20046,2873,79543.245.28$291,902
Aug 200411,6624,77442.375.55$520,618
Jul 20048,0754,09338.286.08$334,014
Jun 20041,1674,45636.106.43$70,794
May 20049441,20937.486.49$43,233
Apr 20049621,16934.475.86$40,009
Mar 20049881,20934.365.53$40,634
Feb 20049861,17932.455.51$38,492
Jan 20041,2271,30232.036.30$47,503
Dec 20031,2921,36530.266.30$47,698
Nov 20031,2601,47128.804.60$43,047
Oct 20039391,20928.174.76$32,206
Sep 200392174926.314.75$27,789
Aug 200390765129.765.13$30,332
Jul 200342258829.415.17$15,451
Jun 200351978328.565.98$19,507
May 200350658926.595.97$16,972
Apr 200351959826.675.41$17,075
Mar 200373399231.146.10$28,873
Feb 200360592633.487.93$27,595
Jan 20039432,25130.315.58$41,148
Dec 20021,1043,55026.914.85$46,939
Nov 20025643,55024.664.14$28,594
Oct 2002341026.464.23$9,023
Sep 20025542,24927.443.64$23,377
Aug 200231793025.963.16$11,172
Jul 2002105024.583.06$2,581
Jun 2002190023.733.34$4,509
May 200216410024.663.58$4,403
Apr 200217023.653.51$402
Mar 200277022.003.10$1,694
Feb 2002192018.222.38$3,498
Jan 2002238017.172.38$4,086
Dec 20012255,98016.932.36$17,948
Nov 20012503,74618.072.41$13,529
Oct 200133654619.782.53$8,027
Sep 200123043324.262.25$6,555
Aug 20012561,50324.873.05$10,956
Jul 20012525,19523.933.20$22,639
Jun 20014032,61424.563.82$19,894
May 20015714,48525.524.31$33,890
Apr 20013442,64824.685.34$22,618
Mar 20012263,90924.545.38$26,563
Feb 20012573,92427.755.77$29,762
Jan 20013744,26627.478.40$46,103
Dec 2000844,04026.889.12$39,113
Nov 20005483,74832.215.66$38,857
Oct 200054911,68431.235.15$77,265
Sep 200054111,42531.875.19$76,497
Aug 200051613,60429.644.54$77,067
Jul 200051215,32828.534.09$77,295
Jun 200052113,54129.304.40$74,808
May 200051315,36527.263.68$70,524
Apr 200053112,27424.513.12$51,261
Mar 20001,09410,47628.422.86$61,050
Feb 200077117,60727.622.73$69,301
Jan 20005355,86325.272.48$28,063
Dec 19998722,10324.282.42$26,269
Nov 19994153,47423.192.43$18,080
Oct 19991944,23720.982.80$15,949
Sep 19991428,19321.752.62$24,545
Aug 199918610,99019.262.88$35,185
Jul 199916510,18417.892.37$27,112
Jun 199918213,89315.942.36$35,718
May 199912411,54915.792.32$28,763
Apr 199915111,21215.102.21$27,037
Mar 19992009,75612.471.84$20,429
Feb 19991345,6169.981.82$11,546
Jan 19991205,86710.381.90$12,393
Dec 19981175,4859.201.77$10,803
Nov 19981226,93910.892.19$16,495
Oct 19981326,48112.421.97$14,402
Sep 19982579,26612.592.08$22,533
Aug 199844615,83111.301.91$35,235
Jul 199834211,69611.742.24$30,182
Jun 19982728,51111.242.24$22,099
May 199843313,33712.622.21$34,890
Apr 19984438,84813.042.51$27,944
Mar 19984022,20312.802.31$10,233
Feb 19982821,49713.952.30$7,376
Jan 19984231,72214.702.15$9,929
Dec 19974941,43616.322.41$11,524
Nov 19974402,43618.193.09$15,527
Oct 19974962,25319.253.15$16,645
Sep 19975382,29717.742.95$16,331
Aug 19975902,44717.862.55$16,789
Jul 19976662,94117.582.25$18,317
Jun 19976152,97017.242.26$17,306
May 19976332,62118.972.31$18,059
Apr 19977702,38917.882.08$18,743
Mar 19975272,40818.951.94$14,656
Feb 199745784620.492.21$11,230
Jan 199748162123.483.54$13,492
Dec 19967621,06223.32$17,770
Nov 19967811,15321.97$17,159
Oct 19969024,55423.31$21,026
Sep 19967633,94022.22$16,954
Aug 19968534,26020.26$17,282
Jul 19969615,31919.55$18,788
Jun 19961,0645,85218.73$19,929
May 19969945,86519.43$19,313
Apr 19961,1817,77221.51$25,403
Mar 19961,3929,01919.38$26,977
Feb 19961,5119,73916.98$25,657
Jan 19961,4159,61817.07$24,154
Dec 19951,1097,51617.19$19,064
Nov 19951,55910,76416.00$24,944
Oct 19951,57013,07215.43$24,225
Sep 19951,6823,40916.18$27,215
Aug 19952,0795,06915.92$33,098
Jul 19952,0335,29515.24$30,983
Jun 19952,2738,62616.41$37,300
May 19952,24811,11317.56$39,475
Apr 19952,53213,18217.73$44,892
Mar 19952,61413,50416.44$42,974
Feb 19952,11712,93816.58$35,100
Jan 19952,20713,41015.92$35,135
Dec 19942,46313,79915.03$37,019
Nov 19942,34016,16515.90$37,206
Oct 19942,26016,50315.58$35,211
Sep 19942,17512,04615.29$33,256
Aug 19942,30413,07816.13$37,164
Jul 19942,53213,33917.56$44,462
Jun 19942,52813,15317.09$43,204
May 19942,56117,90515.88$40,669
Apr 19942,26916,73014.14$32,084
Mar 19942,42214,54512.46$30,178
Feb 19942,35712,67912.50$29,463
Jan 19942,45213,29512.66$31,042
Dec 19932,68115,02412.33$33,057
Nov 19932,75726,65414.49$39,949
Oct 19932,66424,79215.85$42,224
Sep 19933,05829,95315.03$45,962
Aug 19932,97341,58215.66$46,557
Jul 19933,10436,35815.46$47,988
Jun 19932,70436,65316.79$45,400
May 19933,25925,35517.68$57,619
Apr 19933,08922,50818.05$55,756
Mar 19932,77230,77018.14$50,284
Feb 19932,17324,18217.90$38,897
Jan 19932,40926,42116.93$40,784

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                  336 bbl  × $106.41 =    $35,754
Casinghead gas         3 Mcf  × $  3.05 =         $9

────────────────────────────────────────────────────
Month total                                  $35,763

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/2590 is the state's own key, not one this site invented.