UNIVERSITY CONS. V

Operated by CRESCENT ENERGY OPERATING, LLC (P-5 103575) in the FULLERTON field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18727District 08Field 33230001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$35.9 M
Jan 1993 – May 2026
Value, last 12 filed months
$1.2 M
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 165 leases and 2,135 wells, and the rule below applies to all of them.

Discovered
1941-12-23
as the register files it
Field class
Oil
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 10 acres. The field rule took effect on 2010-06-09.

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: BLANCO-FULLERTON D WELLS 13 D, 15D, 16D & 17D. 08/3/21

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
NGPA3none

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
OilDisposition554,550 bbl$32,779,015
Casinghead gasProduction961,573 Mcf$3,169,339
Total$35,948,354

45,109 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 (31)

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 32.3719, -102.7887. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.0 miles.

32.37175, -102.78857 · 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
22.6%
7 of 31 wells
With a plug date
22.6%
7 of 31 wells
Median depth
7,318 ft
31 wells filed one
Completion to plug
13.7 years
median over 7 wells

What the state filed about each well

On the RRC proration schedule
722.6%
A plug date is filed
722.6%
BothOn the schedule and plugged. Neither fact cancels the other.
722.6%
NeitherNo plug date, and not on the schedule.
2477.4%

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, 31 of 31 wells. Median 7,318 ft, with the middle half between 7,272 and 8,544 ft; the shallowest is 7,133 ft and the deepest 10,617 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, 30 of 31 wells, Jul 1964 – May 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
Jul 1964 – May 2025
30 of 31 wells; 1 filed none
Plug dates filed
Nov 1984 – Aug 2016
7 of 31 wells; 24 filed none

Last completion to plug: a median of 13.7 years across the 7 wells that filed both dates, with the middle half between 6.5 years and 25.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

31 wells

42-0033543427W7,133 ft
42-00335153167,350 ftMay 2025
42-00310331117,149 ftJul 2024
42-0034371920117,302 ftJun 2024
42-0034560420168,731 ftMar 2024
42-0034291020067,315 ftOct 2023
42-00338917298,620 ftNov 2014
42-00334323147,175 ftNov 2014
42-0034625120218,900 ftOct 2014
42-0034337720088,350 ftOct 2014
42-0034427320147,289 ftAug 2012
42-0034372020127,304 ftMay 2012
42-0034371820107,310 ftApr 2012
42-0034354920097,311 ftJan 2012
42-0034290920058,560 ftSep 2011
42-0034290720038,538 ftAug 2011
42-0034290820047,309 ftAug 2011
42-0034290620027,318 ftJul 2011
42-0034280220078,508 ftJun 2011
42-0034227020017,331 ftFeb 2011
42-00335433267,136 ftDec 2002Aug 2016Yes
42-00334322157,419 ftSep 1993
42-0033587528W7,137 ftOct 1987Mar 2008Yes
42-0033543225W7,141 ftSep 1987
42-0030616778,540 ftApr 1986Aug 2016Yes
42-0030616628,547 ftNov 1985Jul 2015Yes
42-0030619438,589 ftJul 1985Mar 1986Yes
42-00306198910,617 ftSep 1983May 1992Yes
42-0030613818,550 ftAug 1980Nov 1984Yes
42-00310330107,159 ftAug 1964
42-0031045387,254 ftJul 1964

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 20269181,94498.932.87$96,396
Mar 20269122,04489.753.15$88,289
Feb 20261,6522,61663.503.75$114,713
Jan 20261,2512,19559.138.00$91,527
Dec 20251,6192,77756.664.41$103,988
Nov 20251,4362,84658.593.93$95,310
Oct 20251,8303,00959.383.30$118,610
Sep 20251,6423,02962.743.08$112,339
Aug 20251,6143,18863.933.01$112,794
Jul 20251,8183,18566.743.32$131,892
Jun 20251,9583,07966.483.13$139,801
May 20251,4653,02660.553.23$98,487
Apr 20251,8022,93362.363.54$122,765
Mar 20251,6443,18067.704.27$124,872
Feb 20251,2732,60970.884.34$101,555
Jan 20251,4682,98374.324.28$121,865
Dec 20241,8313,02768.993.12$135,769
Nov 20241,6493,05269.052.20$120,573
Oct 20241,4643,07971.372.28$111,510
Sep 20241,6513,13469.612.36$122,336
Aug 20241,4533,13375.632.06$116,356
Jul 20241,6123,59179.932.15$136,556
Jun 20241,6043,57578.082.63$134,657
May 20242,0163,74878.812.20$167,121
Apr 20241,7083,73784.451.66$150,441
Mar 20242,1673,84380.301.55$179,948
Feb 20241,6893,49876.091.78$134,755
Jan 20242,0453,73573.023.30$161,643
Dec 20232,0203,96371.262.61$154,291
Nov 20232,6233,75877.892.81$214,856
Oct 20232,0063,94785.443.09$183,578
Sep 20232,3543,99989.042.74$220,538
Aug 20232,1984,31680.522.67$188,519
Jul 20232,4854,41574.852.64$197,666
Jun 20231,9964,20068.962.26$147,130
May 20232,3224,33070.622.23$173,624
Apr 20232,2564,17478.122.24$185,579
Mar 20232,5624,41372.852.39$197,203
Feb 20232,3953,79175.112.47$189,236
Jan 20232,3144,19076.533.39$191,285
Dec 20222,1474,23476.415.73$188,309
Nov 20222,6584,35185.005.65$250,497
Oct 20222,4284,47487.185.86$237,908
Sep 20222,3324,43184.888.16$234,113
Aug 20223,0194,68194.529.13$328,080
Jul 20222,3154,652101.587.54$270,243
Jun 20222,3674,603115.097.98$309,137
May 20222,9134,551109.378.43$356,974
Apr 20222,3494,618104.226.84$276,389
Mar 20223,0534,484108.885.08$355,173
Feb 20222,4454,01991.054.86$242,145
Jan 20223,0104,53181.844.54$266,899
Dec 20216,4082,82471.323.90$468,030
Nov 202103,09877.435.24$16,224
Oct 202101,85379.795.71$10,588
Sep 202101,54569.865.35$8,267
Aug 202101,07566.024.22$4,537
Jul 202103,11470.783.98$12,400
Jun 202103,95169.493.38$13,357
May 202101,26063.483.02$3,802
Apr 202102,99060.362.76$8,248
Mar 202103,99961.302.72$10,865
Feb 202102,08357.805.55$11,556
Jan 202105,37650.412.81$15,108
Dec 202006,71044.642.68$17,952
Nov 202005,36138.772.71$14,510
Oct 202005,81036.972.48$14,400
Sep 202005,65837.091.99$11,265
Aug 202005,55539.982.39$13,249
Jul 202005,81438.371.83$10,611
Jun 202004,60134.901.69$7,777
May 202004,13116.921.81$7,497
Apr 20203756,65614.751.80$17,541
Mar 20203,8185,95730.341.86$126,896
Feb 20203,5344,84249.881.98$185,866
Jan 20204,7066,11057.252.09$282,217
Dec 20195,1916,06159.012.30$320,288
Nov 20194,3015,47355.302.75$252,900
Oct 20194,4224,77553.472.42$247,993
Sep 20193,2284,01355.052.66$188,365
Aug 20192,6075,06053.112.30$150,118
Jul 20192,5034,96056.272.46$153,046
Jun 20192,3555,16352.782.49$137,159
May 20192,5055,37758.482.74$161,227
Apr 20192,0944,08062.632.75$142,370
Mar 20192,5375,33556.803.06$160,438
Feb 20192,2875,28150.852.79$131,040
Jan 20192,7855,18246.033.23$144,922
Dec 20182,3685,13046.594.19$131,796
Nov 20182,2945,77052.934.24$145,870
Oct 20182,8515,03861.443.40$192,285
Sep 20182,2953,60559.543.11$147,849
Aug 20182,3774,81659.403.07$155,962
Jul 20182,5705,93765.142.93$184,816
Jun 20182,3386,13460.183.08$159,575
May 20182,6875,41965.382.90$191,396
Apr 20182,3216,08463.842.90$165,821
Mar 20182,8196,38461.222.79$190,370
Feb 20182,4265,09561.782.77$163,972
Jan 20182,7016,23462.874.01$194,806
Dec 20172,7476,41357.272.92$176,056
Nov 20172,8546,54755.423.12$178,585
Oct 20172,7396,39049.292.98$154,071
Sep 20172,6276,31747.523.09$144,337
Aug 20173,1726,83945.373.00$164,461
Jul 20173,0536,88143.873.09$155,179
Jun 20172,8086,85442.493.09$140,472
May 20173,0736,99345.373.26$162,243
Apr 20172,6755,49647.933.21$145,864
Mar 20172,7236,62546.772.98$147,122
Feb 20172,8656,05650.452.95$162,420
Jan 20172,9656,81449.413.42$169,796
Dec 20163,0596,81548.763.72$174,528
Nov 20162,8867,11542.492.64$141,441
Oct 20163,7027,84846.193.09$195,248
Sep 20163,2067,32541.553.10$155,921
Aug 20163,6308,09941.442.92$174,111
Jul 20163,1908,75141.622.92$158,359
Jun 20163,2657,95345.352.69$169,428
May 20163,1778,56042.521.99$152,129
Apr 20162,9298,33136.561.99$123,672
Mar 20163,2928,35033.011.79$123,649
Feb 20162,7657,93126.472.06$89,556
Jan 20163,7098,01127.352.36$120,382
Dec 20153,1108,61132.362.00$117,874
Nov 20153,3189,01238.792.17$148,237
Oct 20153,5648,71943.552.43$176,370
Sep 20153,8549,26542.992.76$191,240
Aug 20154,6988,61340.162.87$213,412
Jul 20154,80810,48648.152.95$262,387
Jun 20154,4519,51456.152.88$277,351
May 20154,2607,37755.212.96$256,997
Apr 20152,2876,72549.822.71$132,140
Mar 20153,1519,43142.892.93$162,824
Feb 20152,3446,40044.662.98$123,731
Jan 20152,7917,07943.433.10$143,162
Dec 20142,5964,69154.693.59$158,822
Nov 20143,0075,29270.464.25$234,374
Oct 20142,9897,16578.303.90$261,989
Sep 20142,1164,62386.164.05$201,017
Aug 20142,1624,91189.394.04$213,078
Jul 20142,6715,39096.564.18$280,440
Jun 20143,0062,58298.164.74$307,300
May 20143,0764,02394.734.73$310,404
Apr 20143,2934,11295.944.81$335,706
Mar 20143,5675,41695.895.06$369,427
Feb 20143,3095,14397.406.19$354,142
Jan 20143,3067,03890.404.86$333,072
Dec 20133,7195,61391.824.35$365,920
Nov 20133,2306,69788.853.74$312,021
Oct 20133,6435,60997.423.78$376,099
Sep 20132,8964,399104.113.72$317,857
Aug 20133,2065,781104.253.52$354,590
Jul 20133,7915,246102.523.72$408,157
Jun 20134,3549,53494.403.93$448,519
May 20134,7657,51394.834.15$483,037
Apr 20133,4362,40693.964.28$333,150
Mar 20134,2774,49593.623.91$418,001
Feb 20138249,68091.233.42$108,278
Jan 20138962,63891.603.42$91,095
Dec 20121,5102,66986.773.42$140,151
Nov 201282287186.953.62$74,630
Oct 20121,1592,80389.383.40$113,121
Sep 20121,4221,75594.672.92$139,743
Aug 20121,3131,51792.662.91$126,074
Jul 20121,6791,58185.133.02$147,709
Jun 20122,10233779.822.52$168,631
May 20121,86219891.612.49$171,071
Apr 20121,885247101.652.00$192,103
Mar 20121,359656105.052.22$144,221
Feb 20121,3361,020101.102.57$137,691
Jan 20121,6881,19698.092.73$168,846
Dec 201160530096.873.24$59,578
Nov 20111,13819395.723.31$109,568
Oct 2011427084.983.65$36,286
Sep 20111,69417883.623.99$142,362
Aug 20111,29511383.404.15$108,472
Jul 201171634794.144.52$68,972
Jun 201173633092.904.64$69,906
May 201168028298.134.40$67,971
Apr 2011636223105.964.33$68,357
Mar 201163422996.364.06$62,021
Feb 201183326385.644.18$72,437
Jan 201169136486.504.59$61,442
Dec 201028738185.734.35$26,261
Nov 201048736880.843.80$40,766
Oct 201057942978.103.51$46,725
Sep 201042442572.633.98$32,486
Aug 201052340773.684.42$40,333
Jul 201027528872.554.74$21,315
Jun 201046528170.364.91$34,097
May 201064444271.124.24$47,673
Apr 201048029481.694.12$40,423
Mar 201067441378.394.39$54,647
Feb 201051936673.585.44$40,180
Jan 201056548374.365.96$44,894
Dec 200943146771.445.48$33,352
Nov 200944537474.593.75$34,596
Oct 200934712772.544.11$25,693
Sep 200942530865.543.06$28,798
Aug 200929928067.423.22$21,060
Jul 200933223761.133.46$21,116
Jun 200929722566.163.90$20,526
May 200938325054.743.93$21,947
Apr 200931928946.773.59$15,956
Mar 200940228542.144.06$18,097
Feb 200927628332.814.63$10,367
Jan 200948835735.865.37$19,417
Dec 200860338737.105.98$24,684
Nov 200850345055.496.86$30,999
Oct 200861560275.246.92$50,440
Sep 2008711501101.767.88$76,298
Aug 2008580511114.228.48$70,582
Jul 2008430463131.0811.39$61,638
Jun 2008703480131.3313.03$98,581
May 2008549554123.1711.57$74,032
Apr 2008478480110.3110.45$57,747
Mar 2008618535101.909.66$68,144
Feb 200865146792.538.77$64,333
Jan 200853051690.388.21$52,136
Dec 200754051788.337.30$51,473
Nov 200757350291.677.29$56,187
Oct 200762558582.856.92$55,831
Sep 200744360975.846.24$37,400
Aug 200762266469.066.39$47,197
Jul 200770448770.906.39$53,025
Jun 200755258762.007.55$38,655
May 200745659158.747.85$31,423
Apr 200759959059.617.81$40,311
Mar 200744464056.927.30$29,946
Feb 200754243655.108.22$33,446
Jan 200762549550.306.73$34,767
Dec 200666354856.656.92$41,350
Nov 200655156254.207.62$34,145
Oct 200694862054.906.01$55,774
Sep 200668558560.085.04$44,102
Aug 200661157468.717.34$46,195
Jul 200668768369.376.34$51,989
Jun 200659259466.286.38$43,030
May 200679264966.016.42$56,450
Apr 200678064964.397.36$55,001
Mar 200690562656.707.08$55,747
Feb 200698554657.597.75$60,958
Jan 20061,00264660.598.93$66,482
Dec 200579862354.9413.42$52,200
Nov 200575057054.6910.59$47,053
Oct 200582958458.3413.80$56,421
Sep 200576546861.4512.08$52,662
Aug 200576360061.519.80$52,810
Jul 200587474855.697.84$54,540
Jun 20051,14368752.337.38$64,884
May 200582768845.226.65$41,973
Apr 20051,12450749.207.36$59,033
Mar 20051,14179050.377.15$63,125
Feb 200563554645.226.31$32,161
Jan 200575347143.166.32$35,477
Dec 200450747339.866.75$23,402
Nov 200472054145.286.33$36,026
Oct 200473243449.706.52$39,208
Sep 200445923243.245.28$21,073
Aug 200425336842.375.55$12,762
Jul 200473653038.286.08$31,399
Jun 200474553736.106.43$30,349
May 200469647337.486.49$29,158
Apr 200453443534.475.86$20,955
Mar 200472639134.365.53$27,108
Feb 200428839532.455.51$11,522
Jan 200453841832.036.30$19,865
Dec 200334336430.266.30$12,673
Nov 200344635128.804.60$14,458
Oct 200339941328.174.76$13,206
Sep 200364848726.314.75$19,362
Aug 200370250329.765.13$23,472
Jul 200348828829.415.17$15,841
Jun 200361148028.565.98$20,322
May 200346935126.595.97$14,567
Apr 200347247826.675.41$15,173
Mar 200351148031.146.10$18,839
Feb 200347532433.487.93$18,471
Jan 200352032530.315.58$17,575
Dec 200237532326.914.85$11,659
Nov 200238433724.664.14$10,864
Oct 200244538326.464.23$13,394
Sep 200213137327.443.64$4,951
Aug 200238740725.963.16$11,334
Jul 200248844924.583.06$13,370
Jun 200236848423.733.34$10,348
May 200262658624.663.58$17,537
Apr 200248337123.653.51$12,726
Mar 200257454422.003.10$14,316
Feb 200247248518.222.38$9,752
Jan 200296152317.172.38$17,743
Dec 200175245816.932.36$13,814
Nov 200175350518.072.41$14,822
Oct 20011,09654119.782.53$23,047
Sep 200177442724.262.25$19,739
Aug 200188347624.873.05$23,414
Jul 200182650623.933.20$21,384
Jun 200153444924.563.82$14,832
May 200181748325.524.31$22,930
Apr 200191236724.685.34$24,466
Mar 200186340424.545.38$23,350
Feb 200177437327.755.77$23,630
Jan 200177437227.478.40$24,386
Dec 200077237926.889.12$24,209
Nov 200096939032.215.66$33,418
Oct 200089634531.235.15$29,757
Sep 200072344131.875.19$25,329
Aug 200092238829.644.54$29,090
Jul 200075943028.534.09$23,413
Jun 20001,02345029.304.40$31,953
May 20001,04547427.263.68$30,231
Apr 200060351124.513.12$16,372
Mar 200064848428.422.86$19,800
Feb 200065847327.622.73$19,464
Jan 200060441725.272.48$16,297
Dec 199967642124.282.42$17,434
Nov 199964746423.192.43$16,133
Oct 199964647420.982.80$14,882
Sep 199963849221.752.62$15,165
Aug 199960346219.262.88$12,942
Jul 199965458017.892.37$13,076
Jun 199968355115.942.36$12,189
May 199966556215.792.32$11,805
Apr 199972356015.102.21$12,154
Mar 199976654912.471.84$10,561
Feb 19996773799.981.82$7,445
Jan 199970334210.381.90$7,947
Dec 19986592979.201.77$6,589
Nov 199867227810.892.19$7,926
Oct 199864339012.421.97$8,754
Sep 199865445312.592.08$9,177
Aug 199872141711.301.91$8,943
Jul 199860243711.742.24$8,045
Jun 199857544511.242.24$7,459
May 199864748312.622.21$9,231
Apr 199865849413.042.51$9,818
Mar 199872050812.802.31$10,389
Feb 199870038913.952.30$10,659
Jan 199871042614.702.15$11,355
Dec 199771940816.322.41$12,718
Nov 199789840918.193.09$17,598
Oct 199788744019.253.15$18,461
Sep 199786844617.742.95$16,716
Aug 199791457717.862.55$17,798
Jul 199791758017.582.25$17,424
Jun 199791956217.242.26$17,112
May 199788862518.972.31$18,288
Apr 199798863917.882.08$18,996
Mar 199795567018.951.94$19,396
Feb 19971,08381920.492.21$23,997
Jan 199789837123.483.54$22,398
Dec 199656618923.32$13,199
Nov 199641618621.97$9,140
Oct 199636222523.31$8,438
Sep 199641356822.22$9,177
Aug 199649458320.26$10,008
Jul 199663660719.55$12,434
Jun 199659966618.73$11,219
May 199651947719.43$10,084
Apr 199653940821.51$11,594
Mar 199667853219.38$13,140
Feb 199693358716.98$15,842
Jan 199675760717.07$12,922
Dec 199566364417.19$11,397
Nov 199568357616.00$10,928
Oct 199581679815.43$12,591
Sep 199566968516.18$10,824
Aug 199556671715.92$9,011
Jul 199557073515.24$8,687
Jun 199564266316.41$10,535
May 199563162717.56$11,080
Apr 199562058417.73$10,993
Mar 199569264616.44$11,376
Feb 199552061416.58$8,622
Jan 199562660615.92$9,966
Dec 199460848515.03$9,138
Nov 199466360615.90$10,542
Oct 199482064415.58$12,776
Sep 19941,02959515.29$15,733
Aug 19941,05374916.13$16,985
Jul 19941,07469317.56$18,859
Jun 19941,03841217.09$17,739
May 19946604115.88$10,481
Apr 199476643214.14$10,831
Mar 19949961,23812.46$12,410
Feb 19949161,04812.50$11,450
Jan 19949871,26012.66$12,495
Dec 19938521,21312.33$10,505
Nov 19931,2111,22514.49$17,547
Oct 19931,1511,31915.85$18,243
Sep 19931,1591,41715.03$17,420
Aug 19931,0782,36915.66$16,881
Jul 19931,1992,44815.46$18,537
Jun 19931,1162,35116.79$18,738
May 19939402,19017.68$16,619
Apr 19931,0902,29218.05$19,675
Mar 19931,0532,09518.14$19,101
Feb 19931,0421,93017.90$18,652
Jan 19931,1412,52716.93$19,317

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.

Apr 2026 — as filed, then multipliedworked
Oil                  918 bbl  × $ 98.93 =    $90,818
Casinghead gas     1,944 Mcf  × $  2.87 =     $5,579

────────────────────────────────────────────────────
Month total                                  $96,396

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. 08/O/18727 is the state's own key, not one this site invented.