MCELROY RANCH CO. -F-

Operated by DIAMONDBACK E&P LLC (P-5 217012) in the BLOCK 42 (PENN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 2590District 7CField 09450200OilCasinghead gasSaveExport
Value, all time
$31.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$517 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 25 leases and 57 wells, and the rule below applies to all of them.

Discovered
1956-12-15
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 160 acres.

The Commission's schedule remark for this field reads: CONS BLOCK 42 (STRAWN)&BLOCK 42 (STRAWN, LO.) PER DOC 94259 4-1-90

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
OilDisposition372,257 bbl$11,053,135
Casinghead gasProduction5,391,824 Mcf$20,753,019
Total$31,806,154

798,032 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 (26)

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 31.5190, -102.2864. A lease has no coordinate of its own — that point is the mean of its wells, and they span 3.2 miles.

31.51720, -102.28588 · 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
80.8%
21 of 26 wells
With a plug date
61.5%
16 of 26 wells
Median depth
9,720 ft
25 wells filed one
Completion to plug
22.4 years
median over 11 wells

What the state filed about each well

On the RRC proration schedule
2180.8%
A plug date is filed
1661.5%
BothOn the schedule and plugged. Neither fact cancels the other.
1661.5%
NeitherNo plug date, and not on the schedule.
519.2%

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, 25 of 26 wells. Median 9,720 ft, with the middle half between 9,604 and 9,907 ft; the shallowest is 990 ft and the deepest 12,697 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, 20 of 26 wells, Oct 1962 – Feb 2018. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1962 – Feb 2018
20 of 26 wells; 6 filed none
Plug dates filed
Mar 1985 – Sep 2019
16 of 26 wells; 10 filed none

Last completion to plug: a median of 22.4 years across the 11 wells that filed both dates, with the middle half between 17.6 years and 45.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

26 wells

42-46100684112,697 ftApr 1994Yes
42-46110032149,600 ftMay 2017Yes
42-4611009169,604 ftOct 1997Yes
42-461100957 LYes
42-4611019218 L9,592 ftApr 2017Yes
42-461102391910,036 ftMar 1985Yes
42-46110158139,981 ftFeb 2018Yes
42-4613868631D5,500 ftSep 2016
42-46110323219,486 ftOct 2015Sep 2019Yes
42-4613876830H9,696 ftJan 2014
42-46110159159,720 ftJul 2000Yes
42-46110160169,950 ftSep 1998Dec 2010Yes
42-46133933279,650 ftJul 1998Apr 2017Yes
42-46133929269,700 ftJun 1998
42-46133871259,700 ftJan 1998
42-461100551011,021 ftOct 1997Mar 2014Yes
42-4611007659,738 ftApr 1994Apr 2014Yes
42-4610068639,827 ftApr 1990Sep 2012Yes
42-4611000999,980 ftApr 1990
42-46131585229,745 ftDec 1981Yes
42-461006852D9,654 ftOct 1974Apr 2013Yes
42-4611025329,495 ftJun 1972Yes
42-46110240209,782 ftApr 1965Dec 2002Yes
42-4611003912990 ftNov 1963Apr 2017Yes
42-4611010589,720 ftJun 1963Apr 2017Yes
42-4610068749,907 ftOct 1962Mar 2014Yes

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 20262826,166106.413.05$48,788
Apr 20262905,83298.932.87$45,426
Mar 20262834,96089.753.15$41,020
Feb 20261415,55363.503.75$29,779
Jan 20262515,97459.138.00$62,621
Dec 20252595,98656.664.41$41,093
Nov 20253966,10058.593.93$47,153
Oct 20252436,14059.383.30$34,721
Sep 20252436,49762.743.08$35,237
Aug 20252546,86163.933.01$36,922
Jul 20254197,31966.743.32$52,228
Jun 20252927,21566.483.13$41,986
May 20255439,47760.553.23$63,511
Apr 20252544,87562.363.54$33,112
Mar 20251242,18167.704.27$17,704
Feb 20251181,72270.884.34$15,839
Jan 20251282,82774.324.28$21,609
Dec 2024942,82568.993.12$15,303
Nov 20242241,59069.052.20$18,963
Oct 202402,52271.372.28$5,754
Sep 20242072,13269.612.36$19,450
Aug 202402,06275.632.06$4,255
Jul 20241013,32479.932.15$15,208
Jun 20241013,17878.082.63$16,257
May 202403,21278.812.20$7,061
Apr 20241072,94784.451.66$13,926
Mar 20241112,80080.301.55$13,240
Feb 20241183,07276.091.78$14,458
Jan 202403,17573.023.30$10,470
Dec 20231313,43971.262.61$18,313
Nov 20231293,31577.892.81$19,355
Oct 20231423,40085.443.09$22,629
Sep 20231433,07089.042.74$21,129
Aug 20231453,82580.522.67$21,899
Jul 20232874,10874.852.64$32,334
Jun 20233104,31668.962.26$31,125
May 20231614,79870.622.23$22,057
Apr 20232274,33478.122.24$27,432
Mar 20231404,55372.852.39$21,095
Feb 2023124,22275.112.47$11,311
Jan 20231254,51876.533.39$24,872
Dec 20221084,46776.415.73$33,844
Nov 202203,34385.005.65$18,875
Oct 2022703,52187.185.86$26,749
Sep 202203,39584.888.16$27,716
Aug 202203,49094.529.13$31,854
Jul 2022773,484101.587.54$34,098
Jun 2022802,338115.097.98$27,858
May 20221733,325109.378.43$46,961
Apr 20221023,302104.226.84$33,208
Mar 20222013,398108.885.08$39,134
Feb 2022953,06691.054.86$23,547
Jan 20221943,41181.844.54$31,355
Dec 20212213,38571.323.90$28,960
Nov 20211073,23777.435.24$25,237
Oct 20211053,37279.795.71$27,645
Sep 20211183,21369.865.35$25,436
Aug 20212613,47666.024.22$31,902
Jul 20211593,42470.783.98$24,889
Jun 20211513,46869.493.38$22,217
May 20212883,23463.483.02$28,041
Apr 20211243,98360.362.76$18,471
Mar 20211604,79361.302.72$22,830
Feb 20212334,41057.805.55$37,934
Jan 20211434,04650.412.81$18,579
Dec 20202143,78744.642.68$19,685
Nov 20201063,73238.772.71$14,211
Oct 20202173,85436.972.48$17,574
Sep 2020953,68837.091.99$10,867
Aug 20201863,94539.982.39$16,846
Jul 20201724,50338.371.83$14,818
Jun 20202864,10534.901.69$16,920
May 202004,28816.921.81$7,782
Apr 20201204,56914.751.80$10,014
Mar 20201284,59930.341.86$12,420
Feb 20201814,27949.881.98$17,504
Jan 20202604,23557.252.09$23,756
Dec 20193104,47859.012.30$28,612
Nov 20191814,41155.302.75$22,143
Oct 20191514,49553.472.42$18,945
Sep 20191964,42955.052.66$22,559
Aug 20191964,37753.112.30$20,496
Jul 20194674,71856.272.46$37,885
Jun 20191794,63052.782.49$20,982
May 20191924,59658.482.74$23,823
Apr 20191964,52862.632.75$24,731
Mar 20191014,69056.803.06$20,098
Feb 20191074,27550.852.79$17,378
Jan 20192833,25546.033.23$23,534
Dec 201853,32446.594.19$14,145
Nov 20182523,48552.934.24$28,105
Oct 2018443,62461.443.40$15,018
Sep 20181683,91659.543.11$22,174
Aug 20181043,26959.403.07$16,202
Jul 20181853,94665.142.93$23,620
Jun 2018181,98460.183.08$7,188
May 20183213,78365.382.90$31,961
Apr 201803,53363.842.90$10,249
Mar 20181323,66061.222.79$18,281
Feb 2018292,12161.782.77$7,659
Jan 20183314,13862.874.01$37,401
Dec 20172913,64257.272.92$27,306
Nov 2017203,56855.423.12$12,235
Oct 20173124,04649.292.98$27,450
Sep 2017673,85447.523.09$15,082
Aug 20173053,84745.373.00$25,396
Jul 20172564,03343.873.09$23,682
Jun 20171124,08042.493.09$17,355
May 20173384,92845.373.26$31,417
Apr 20172394,96947.933.21$27,414
Mar 2017454,83446.772.98$16,528
Feb 20175282,70350.452.95$34,618
Jan 2017933,28349.413.42$15,819
Dec 20161045,06348.763.72$23,920
Nov 20162005,03842.492.64$21,820
Oct 201624190246.193.09$13,919
Sep 2016571,87941.553.10$8,194
Aug 20161551,41341.442.92$10,555
Jul 20161561,39941.622.92$10,584
Jun 20162991,34545.352.69$17,172
May 20161391,57642.521.99$9,048
Apr 20162021,51736.561.99$10,406
Mar 20162571,49433.011.79$11,164
Feb 20161551,36126.472.06$6,911
Jan 20162651,35727.352.36$10,456
Dec 20152821,56132.362.00$12,250
Nov 2015241,49838.792.17$4,178
Oct 20151991,51743.552.43$12,348
Sep 2015171,29442.992.76$4,300
Aug 20151531,51040.162.87$10,482
Jul 2015971,75948.152.95$9,851
Jun 201517096056.152.88$12,313
May 2015843,10155.212.96$13,802
Apr 20151826,11149.822.71$25,607
Mar 20151716,07942.892.93$25,174
Feb 20152193,11844.662.98$19,060
Jan 20152122,83043.433.10$17,982
Dec 20142443,27754.693.59$25,113
Nov 20142405,73470.464.25$41,290
Oct 20142982,97178.303.90$34,923
Sep 20143152,57486.164.05$37,553
Aug 20142183,26789.394.04$32,670
Jul 20142684,66496.564.18$45,372
Jun 20145776,07398.164.74$85,405
May 20144214,95294.734.73$63,287
Apr 20144515,83295.944.81$71,316
Mar 20147677,22495.895.06$110,078
Feb 20146144,69997.406.19$88,900
Jan 20143997,15890.404.86$70,863
Dec 20131104,87991.824.35$31,346
Nov 20133284,23388.853.74$44,967
Oct 20131694,57897.423.78$33,766
Sep 2013864,554104.113.72$25,884
Aug 20132844,631104.253.52$45,920
Jul 2013523,617102.523.72$18,778
Jun 2013733,16694.403.93$19,344
May 201316311,45094.834.15$62,964
Apr 20131466,14093.964.28$40,013
Mar 20131816,31393.623.91$41,647
Feb 20133307,51291.233.42$55,796
Jan 20132816,57091.603.42$48,208
Dec 20122686,77686.773.42$46,429
Nov 20122603,33386.953.62$34,689
Oct 20121753,69089.383.40$28,186
Sep 20121503,66994.672.92$24,908
Aug 2012553,52892.662.91$15,356
Jul 20122303,70085.133.02$30,757
Jun 20124327,65679.822.52$53,768
May 20124269,33691.612.49$62,257
Apr 20124308,994101.652.00$61,669
Mar 20123298,904105.052.22$54,347
Feb 20125477,843101.102.57$75,460
Jan 20125129,39798.092.73$75,914
Dec 20113889,19296.873.24$67,365
Nov 20114759,35195.723.31$76,431
Oct 201117610,26484.983.65$52,405
Sep 201150810,18183.623.99$83,058
Aug 20115369,55983.404.15$84,366
Jul 20113839,89694.144.52$80,758
Jun 20116339,33292.904.64$102,105
May 20112169,66298.134.40$63,755
Apr 201146213,863105.964.33$109,026
Mar 201147515,52696.364.06$108,765
Feb 20113167,10385.644.18$56,753
Jan 201154213,36386.504.59$108,203
Dec 201037912,87185.734.35$88,452
Nov 201042813,29180.843.80$85,043
Oct 201033913,32978.103.51$73,246
Sep 201047413,52672.633.98$88,253
Aug 201036514,46173.684.42$90,802
Jul 201037415,11872.554.74$98,740
Jun 201059814,32470.364.91$112,412
May 201047314,85471.124.24$96,550
Apr 201045513,25581.694.12$91,815
Mar 2010558078.394.39$43,742
Feb 201063413,38773.585.44$119,507
Jan 201055314,74874.365.96$129,079
Dec 200944212,86471.445.48$102,119
Nov 200951211,95574.593.75$83,039
Oct 200936512,62472.544.11$78,365
Sep 200935712,58165.543.06$61,955
Aug 200936312,06967.423.22$63,318
Jul 200948513,37661.133.46$75,989
Jun 200939813,03266.163.90$77,091
May 200939514,61154.743.93$78,981
Apr 200959016,18546.773.59$85,658
Mar 200958016,95842.144.06$93,274
Feb 200980315,19332.814.63$96,736
Jan 200976116,73135.865.37$117,152
Dec 200874617,71337.105.98$133,550
Nov 200838917,12855.496.86$139,090
Oct 200832814,88075.246.92$127,678
Sep 200865716,365101.767.88$195,765
Aug 200839318,000114.228.48$197,583
Jul 200880819,198131.0811.39$324,567
Jun 200846217,456131.3313.03$288,172
May 200863218,411123.1711.57$290,938
Apr 200863619,052110.3110.45$269,343
Mar 200865619,708101.909.66$257,306
Feb 200865119,43892.538.77$230,720
Jan 200880020,80890.388.21$243,049
Dec 200763918,96788.337.30$194,939
Nov 200771216,31791.677.29$184,248
Oct 200750317,19682.856.92$160,704
Sep 200751616,47775.846.24$142,018
Aug 200748216,83369.066.39$140,815
Jul 200775817,30870.906.39$164,305
Jun 200737211,94662.007.55$113,238
May 200764718,24158.747.85$181,129
Apr 200767117,33359.617.81$175,286
Mar 200750017,61756.927.30$157,099
Feb 200763218,33655.108.22$185,472
Jan 200772115,26450.306.73$138,945
Dec 200668919,84656.656.92$176,335
Nov 200669319,79654.207.62$188,356
Oct 200657619,93454.906.01$151,501
Sep 200650919,17460.085.04$127,164
Aug 200666120,90168.717.34$198,829
Jul 200648821,01569.376.34$167,146
Jun 200638519,24866.286.38$148,395
May 200642420,35966.016.42$158,795
Apr 200661220,54164.397.36$190,598
Mar 200682522,17056.707.08$203,806
Feb 200666720,01957.597.75$193,582
Jan 200676120,81360.598.93$232,038
Dec 200559717,74354.9413.42$270,829
Nov 200559917,31554.6910.59$216,097
Oct 200573618,83758.3413.80$302,809
Sep 200555418,01561.4512.08$251,646
Aug 200563520,18461.519.80$236,798
Jul 200561720,24355.697.84$193,140
Jun 200556720,81252.337.38$183,285
May 200559720,66545.226.65$164,443
Apr 200563218,68649.207.36$168,632
Mar 200583221,28850.377.15$194,221
Feb 200563319,02645.226.31$148,715
Jan 200573522,22443.166.32$172,227
Dec 200486820,89639.866.75$175,669
Nov 200467321,32445.286.33$165,463
Oct 200486022,59849.706.52$189,970
Sep 200480222,23043.245.28$152,140
Aug 200468023,45142.375.55$158,980
Jul 200499424,95938.286.08$189,905
Jun 200459124,59236.106.43$179,536
May 20041,17926,44737.486.49$215,951
Apr 20041,13224,71834.475.86$183,829
Mar 20041,28525,94634.365.53$187,638
Feb 20041,21524,53032.455.51$174,578
Jan 20041,47026,27632.036.30$212,613
Dec 20031,20626,08030.266.30$200,840
Nov 20031,18424,15428.804.60$145,091
Oct 20031,13625,58128.174.76$153,757
Sep 20031,04625,33226.314.75$147,831
Aug 20031,12425,44929.765.13$163,996
Jul 200388225,94329.415.17$160,087
Jun 20031,07326,36628.565.98$188,392
May 20031,11226,57626.595.97$188,298
Apr 20031,05026,38026.675.41$170,648
Mar 20031,07827,23831.146.10$199,613
Feb 200388323,37733.487.93$214,846
Jan 20031,19527,38230.315.58$189,068
Dec 20021,23927,84626.914.85$168,499
Nov 20021,38626,03524.664.14$141,885
Oct 200286427,48026.464.23$139,078
Sep 200295927,49627.443.64$126,268
Aug 20021,01928,45425.963.16$116,486
Jul 200285226,89824.583.06$103,297
Jun 20021,04128,46523.733.34$119,726
May 20021,06129,35024.663.58$131,355
Apr 20021,30617,64223.653.51$92,851
Mar 200287212,54322.003.10$58,101
Feb 200281213,71618.222.38$47,379
Jan 20021,10615,51017.172.38$55,837
Dec 20011,20915,48016.932.36$57,069
Nov 20011,03610,94818.072.41$45,056
Oct 200178012,12519.782.53$46,091
Sep 200191813,70724.262.25$53,130
Aug 20011,04717,18324.873.05$78,501
Jul 20011,25922,21023.933.20$101,135
Jun 20011,06615,42024.563.82$85,150
May 200171615,74525.524.31$86,091
Apr 200170020,20924.685.34$125,097
Mar 20011,17924,56524.545.38$161,005
Feb 20011,22621,38627.755.77$157,356
Jan 20011,40920,05127.478.40$207,109
Dec 20001,52319,77426.889.12$221,327
Nov 200092514,44632.215.66$111,530
Oct 20001,00212,63231.235.15$96,290
Sep 20001,10824,45931.875.19$162,169
Aug 200088724,91029.644.54$139,401
Jul 200092225,22128.534.09$129,452
Jun 200098625,78429.304.40$142,268
May 20001,08927,29027.263.68$130,107
Apr 20001,21426,16624.513.12$111,288
Mar 20001,33227,78228.422.86$117,305
Feb 20001,18123,91627.622.73$97,826
Jan 20001,27517,63725.272.48$75,968
Dec 19991,49228,79224.282.42$106,010
Nov 19991,42332,14723.192.43$111,245
Oct 19991,19630,52320.982.80$110,670
Sep 19991,52437,87621.752.62$132,339
Aug 19991,50412,80819.262.88$65,798
Jul 19991,22441,97317.892.37$121,473
Jun 19991,71045,34515.942.36$134,367
May 19991,43746,08015.792.32$129,643
Apr 19991,66546,42815.102.21$127,657
Mar 19991,96449,56412.471.84$115,606
Feb 19991,92243,3999.981.82$98,072
Jan 19992,21636,98310.381.90$93,268
Dec 19982,74650,5289.201.77$114,866
Nov 19982,65250,10910.892.19$138,405
Oct 19983,60258,08212.421.97$159,113
Sep 19984,23758,38312.592.08$174,933
Aug 19985,00756,78211.301.91$164,882
Jul 19984,40752,01911.742.24$168,119
Jun 19983,80537,22011.242.24$126,039
May 19982,77336,86012.622.21$116,321
Apr 19982,93939,46013.042.51$137,185
Mar 19984,12644,45212.802.31$155,472
Feb 19984,49641,23213.952.30$157,517
Jan 19984,40527,02714.702.15$122,991
Dec 19971,72312,95116.322.41$59,346
Nov 19971,69413,50718.193.09$72,527
Oct 19971,96315,26319.253.15$85,863
Sep 19971,81516,23617.742.95$80,174
Aug 19972,01717,50617.862.55$80,747
Jul 19971,96119,45417.582.25$78,186
Jun 19972,42819,40017.242.26$85,648
May 19971,83113,12018.972.31$65,022
Apr 19971,84612,00717.882.08$58,014
Mar 19971,93512,58418.951.94$61,070
Feb 19971,87010,17520.492.21$60,761
Jan 19972,33011,11523.483.54$94,052
Dec 19962,29811,61723.32$53,589
Nov 19962,36511,30621.97$51,959
Oct 19962,62212,63123.31$61,119
Sep 19962,60012,64622.22$57,772
Aug 19962,35713,19820.26$47,753
Jul 19962,50313,53619.55$48,934
Jun 19962,33013,66318.73$43,641
May 19961,83012,94219.43$35,557
Apr 19962,08410,48721.51$44,827
Mar 19961,81611,09419.38$35,194
Feb 19962,06111,12016.98$34,996
Jan 19962,44812,02017.07$41,787
Dec 19952,67712,70617.19$46,018
Nov 19951,98314,70516.00$31,728
Oct 19951,69810,34015.43$26,200
Sep 19951,1799,11916.18$19,076
Aug 19951,1788,48615.92$18,754
Jul 19951,32710,54515.24$20,223
Jun 19951,96115,80016.41$32,180
May 19952,62118,59917.56$46,025
Apr 19952,72120,18917.73$48,243
Mar 19952,21517,14116.44$36,415
Feb 19952,86421,17816.58$47,485
Jan 19953,38325,60415.92$53,857
Dec 19943,88325,36715.03$58,361
Nov 19944,13624,91315.90$65,762
Oct 19943,44225,71615.58$53,626
Sep 19943,59519,16715.29$54,968
Aug 19943,97922,71116.13$64,181
Jul 19944,47721,60917.56$78,616
Jun 19944,39621,35017.09$75,128
May 19943,97216,37415.88$63,075
Apr 19944,92125,69114.14$69,583
Mar 19945,65223,22312.46$70,424
Feb 19944,32829,14612.50$54,100
Jan 19947,16435,09212.66$90,696
Dec 19936,16830,64012.33$76,051
Nov 19936,52029,75314.49$94,475
Oct 19934,71225,17515.85$74,685
Sep 19935,12625,41215.03$77,044
Aug 19935,59326,12215.66$87,586
Jul 19932,82116,33815.46$43,613
Jun 19932,25310,90716.79$37,828
May 19931273,94917.68$2,245
Apr 1993133,95718.05$235
Mar 1993572,43018.14$1,034
Feb 1993961,94817.90$1,718
Jan 199317737016.93$2,997

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                  282 bbl  × $106.41 =    $30,008
Casinghead gas     6,166 Mcf  × $  3.05 =    $18,781

────────────────────────────────────────────────────
Month total                                  $48,788

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. 7C/O/2590 is the state's own key, not one this site invented.