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WILSON -B-

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

Oil lease lease 31066District 08Field 33230300Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$44.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$36 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The FULLERTON ( DEVONIAN ) field

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 14 leases and 27 wells, and the rule below applies to all of them.

Discovered
1987-01-24
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 80 acres. The field rule took effect on 1989-02-01.

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: “OPTIONAL 80 ACRES DIAG. 3250”

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
NGPA5none——

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
OilDisposition1,099,279 bbl$40,481,015
Casinghead gasProduction1,386,079 Mcf$4,291,487
Total$44,772,503

336,524 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 (5)

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 32.4228, -102.8346. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.7 miles.

32.42165, -102.83600 · 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
0.0%
0 of 5 wells
With a plug date
0.0%
0 of 5 wells
Median depth
8,835 ft
5 wells filed one
Completion to plug
—
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
5100.0%

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

Between 8,600 and 10,400 ft, median 8,835 ft, over the 5 wells that filed a depth.

Completions filed
Jan 1987 – Apr 1994
4 of 5 wells; 1 filed none

5 wells

42-00335757198,788 ft———
42-003335741710,400 ftApr 1994——
42-00335948218,600 ftFeb 1988——
42-00335833208,850 ftSep 1987——
42-00335677188,835 ftJan 1987——

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 20260774106.413.05$2,357
Apr 2026075998.932.87$2,178
Mar 2026077189.753.15$2,428
Feb 2026069063.503.75$2,588
Jan 2026079459.138.00$6,350
Dec 2025086256.664.41$3,804
Nov 2025051058.593.93$2,002
Oct 2025085759.383.30$2,832
Sep 2025088062.743.08$2,708
Aug 2025093163.933.01$2,807
Jul 2025082566.743.32$2,735
Jun 2025095266.483.13$2,979
May 2025031560.553.23$1,018
Apr 202561171262.363.54$40,625
Mar 2025077167.704.27$3,291
Feb 2025097970.884.34$4,250
Jan 2025091874.324.28$3,928
Dec 202401,11168.993.12$3,468
Nov 202401,13169.052.20$2,486
Oct 202401,17271.372.28$2,674
Sep 202401,29169.612.36$3,052
Aug 202401,24475.632.06$2,567
Jul 202401,13079.932.15$2,426
Jun 202401,17678.082.63$3,098
May 20241671,23978.812.20$15,885
Apr 202401,20084.451.66$1,991
Mar 202401,30580.301.55$2,016
Feb 20241481,50376.091.78$13,942
Jan 20244071,71373.023.30$35,368
Dec 20234912,00071.262.61$40,210
Nov 20232321,42177.892.81$22,060
Oct 20237441,80785.443.09$69,146
Sep 20236261,79489.042.74$60,646
Aug 20238371,74280.522.67$72,051
Jul 20234961,42374.852.64$40,885
Jun 20235321,38968.962.26$39,824
May 20231,1432,11270.622.23$85,423
Apr 20234621,74678.122.24$39,999
Mar 20239101,60672.852.39$70,137
Feb 20238541,59975.112.47$68,087
Jan 20231,1602,38176.533.39$96,841
Dec 20221,0672,19576.415.73$94,105
Nov 20225902,34385.005.65$63,379
Oct 20221,2852,27187.185.86$125,343
Sep 20221,0111,92784.888.16$101,545
Aug 20221,1302,32294.529.13$128,001
Jul 20221,1962,356101.587.54$139,259
Jun 20221,1972,343115.097.98$156,453
May 20229981,677109.378.43$123,293
Apr 20228962,051104.226.84$107,405
Mar 20221,4022,202108.885.08$163,828
Feb 20228501,58291.054.86$85,079
Jan 20221,4952,17981.844.54$132,238
Dec 20218331,98071.323.90$67,130
Nov 20211,0412,24577.435.24$92,361
Oct 20211,0852,35279.795.71$100,011
Sep 20211,2172,45769.865.35$98,167
Aug 20211,2162,53866.024.22$90,992
Jul 20211,3432,49970.783.98$105,009
Jun 20219602,54369.493.38$75,307
May 20211,1772,36663.483.02$81,856
Apr 20211,1932,47560.362.76$78,837
Mar 20211,2953,06961.302.72$87,722
Feb 20217001,22757.805.55$47,267
Jan 20211,3832,71250.412.81$77,338
Dec 20201,2172,72244.642.68$61,609
Nov 20201,6652,66038.772.71$71,752
Oct 20201,4162,78936.972.48$59,262
Sep 20201,3172,66137.091.99$54,146
Aug 20201,3092,84939.982.39$59,129
Jul 20201,6442,87938.371.83$68,335
Jun 20201,2542,72434.901.69$48,369
May 20201,5162,75116.921.81$30,643
Apr 20201,5202,68714.751.80$27,268
Mar 20201,2362,78030.341.86$42,661
Feb 20201,6832,54849.881.98$88,995
Jan 20201,3532,78757.252.09$83,297
Dec 20191,4522,81659.012.30$92,172
Nov 20191,2312,71255.302.75$75,534
Oct 20191,6082,90353.472.42$93,001
Sep 20191,3002,82655.052.66$79,074
Aug 20191,5032,92553.112.30$86,565
Jul 20191,4223,05556.272.46$87,531
Jun 20191,7512,73452.782.49$99,229
May 20191,2612,85258.482.74$81,559
Apr 20191,5962,93362.632.75$108,025
Mar 20191,5452,98156.803.06$96,884
Feb 20191,4672,74550.852.79$82,262
Jan 20191,6023,26546.033.23$84,280
Dec 20181,4212,87146.594.19$78,221
Nov 20181,5052,79252.934.24$91,490
Oct 20181,4282,75661.443.40$97,101
Sep 20181,4372,95159.543.11$94,731
Aug 20181,5823,11159.403.07$103,511
Jul 20181,7093,10665.142.93$120,431
Jun 20181,3523,01360.183.08$90,634
May 20181,7563,12665.382.90$123,875
Apr 20181,4272,93963.842.90$99,625
Mar 20181,4273,12461.222.79$96,067
Feb 20181,6872,80661.782.77$111,985
Jan 20181,5123,14462.874.01$107,665
Dec 20171,6453,08457.272.92$103,219
Nov 20171,7213,08755.423.12$105,004
Oct 20171,4513,22249.292.98$81,133
Sep 20171,6612,97847.523.09$88,125
Aug 20171,7803,16445.373.00$90,265
Jul 20171,6593,32043.873.09$83,030
Jun 20171,5113,36042.493.09$74,576
May 20171,8303,13945.373.26$93,271
Apr 20171,8262,99847.933.21$97,149
Mar 20171,1753,11646.772.98$64,252
Feb 20171,3712,59450.452.95$76,826
Jan 20172,1762,97349.413.42$117,680
Dec 20161,1783,23348.763.72$69,475
Nov 20161,9622,93442.492.64$91,124
Oct 20161,4292,56746.193.09$73,938
Sep 20161,5892,59441.553.10$74,066
Aug 20161,5232,44241.442.92$70,254
Jul 20161,5122,41341.622.92$69,986
Jun 20161,8332,27845.352.69$89,245
May 20161,3842,35342.521.99$63,533
Apr 20161,7982,27036.561.99$70,255
Mar 20161,7002,59833.011.79$60,778
Feb 20161,5762,57726.472.06$47,035
Jan 20161,9842,65227.352.36$60,533
Dec 20151,4922,68932.362.00$53,663
Nov 20151,5812,56238.792.17$66,880
Oct 20151,8832,67943.552.43$88,505
Sep 20151,6702,64742.992.76$79,095
Aug 20151,8572,74440.162.87$82,459
Jul 20151,4702,70748.152.95$78,753
Jun 20151,6132,57656.152.88$97,996
May 20151,7742,81755.212.96$106,268
Apr 20151,8242,64349.822.71$98,025
Mar 20151,9701,86542.892.93$89,967
Feb 20151,7142,55344.662.98$84,145
Jan 20151,9652,86743.433.10$94,229
Dec 20142,1183,05654.693.59$126,809
Nov 20142,0963,42270.464.25$162,234
Oct 20141,8092,39178.303.90$150,972
Sep 20141,3491,58386.164.05$122,634
Aug 20141,3331,97389.394.04$127,118
Jul 20141,4491,96696.564.18$148,133
Jun 20141,4482,08498.164.74$152,007
May 20141,5792,12794.734.73$159,632
Apr 20141,6872,13595.944.81$172,118
Mar 20141,6922,01395.895.06$172,425
Feb 20141,4901,96697.406.19$157,299
Jan 20141,6552,20190.404.86$160,310
Dec 20131,5692,13791.824.35$153,371
Nov 20131,7452,40088.853.74$164,015
Oct 20131,7692,81497.423.78$182,971
Sep 20131,7812,807104.113.72$195,856
Aug 20131,9312,728104.253.52$210,916
Jul 20131,1741,406102.523.72$125,586
Jun 20131,7812,56194.403.93$178,200
May 20131,6482,10594.834.15$165,014
Apr 20131,4581,52693.964.28$143,529
Mar 20131,6562,58493.623.91$165,146
Feb 20131,7022,31591.233.42$163,191
Jan 20131,2042,51591.603.42$118,887
Dec 20121,8472,53186.773.42$168,921
Nov 20121,9022,51686.953.62$174,499
Oct 20122,2512,45489.383.40$209,537
Sep 20121,7212,62094.672.92$170,573
Aug 20121,9562,67092.662.91$189,008
Jul 20121,8332,70885.133.02$164,224
Jun 20121,6293,24979.822.52$138,211
May 20122,0143,50291.612.49$193,217
Apr 20121,6363,377101.652.00$173,043
Mar 20122,0693,365105.052.22$224,826
Feb 20121,9483,115101.102.57$204,949
Jan 20122,1023,39998.092.73$215,478
Dec 20111,8763,58996.873.24$193,356
Nov 20111,8983,54195.723.31$193,402
Oct 20112,1943,73184.983.65$200,059
Sep 20111,9363,67983.623.99$176,552
Aug 20112,0933,85583.404.15$190,552
Jul 20111,8893,90194.144.52$195,452
Jun 20112,2093,75992.904.64$222,657
May 20112,1963,86698.134.40$232,523
Apr 20111,8943,669105.964.33$216,587
Mar 20111,9783,30996.364.06$204,026
Feb 20111,7192,88785.644.18$159,283
Jan 20112,0233,44586.504.59$190,798
Dec 20102,0043,65485.734.35$187,690
Nov 20102,0453,48480.843.80$178,541
Oct 20102,2043,64378.103.51$184,915
Sep 20101,8593,36372.633.98$148,402
Aug 20101,8383,56673.684.42$151,183
Jul 20102,1123,63372.554.74$170,433
Jun 20102,0493,60570.364.91$161,870
May 20101,9613,61971.124.24$154,794
Apr 20101,7503,31381.694.12$156,616
Mar 20101,8433,07178.394.39$157,950
Feb 20101,7722,66473.585.44$144,882
Jan 20101,9232,91874.365.96$160,397
Dec 20091,9362,87171.445.48$154,052
Nov 20091,7883,00474.593.75$144,636
Oct 20092,0141,39372.544.11$151,821
Sep 20091,5923,28865.543.06$114,417
Aug 20091,8303,49467.423.22$134,624
Jul 20092,3453,49161.133.46$155,444
Jun 20091,9903,70366.163.90$146,082
May 20092,1273,70854.743.93$130,989
Apr 20091,8353,19346.773.59$97,278
Mar 20091,9723,03542.144.06$95,419
Feb 20092,0032,64432.814.63$77,968
Jan 20091,9863,03435.865.37$87,514
Dec 20082,7253,16737.105.98$120,027
Nov 20082,0323,16855.496.86$134,489
Oct 20082,1603,32175.246.92$185,506
Sep 20082,0422,434101.767.88$226,967
Aug 20081,9833,405114.228.48$255,383
Jul 20082,5173,687131.0811.39$371,921
Jun 20081,7303,144131.3313.03$268,175
May 20082,2673,528123.1711.57$320,060
Apr 20081,8793,220110.3110.45$240,937
Mar 20082,0712,950101.909.66$239,544
Feb 20081,9442,01392.538.77$197,534
Jan 20082,3292,09190.388.21$227,653
Dec 20072,1932,36688.337.30$210,984
Nov 20072,0242,35391.677.29$202,697
Oct 20072,2652,59082.856.92$205,583
Sep 20072,0822,56075.846.24$173,884
Aug 20072,1202,70869.066.39$163,706
Jul 20071,9432,70870.906.39$155,057
Jun 20072,2782,45662.007.55$159,775
May 20072,1872,49358.747.85$148,025
Apr 20072,1882,29459.617.81$148,332
Mar 20072,2212,28856.927.30$143,126
Feb 20072,1591,90155.108.22$134,580
Jan 20072,3482,25050.306.73$133,240
Dec 20062,1272,44456.656.92$137,403
Nov 20062,4272,52354.207.62$150,762
Oct 20062,2622,66754.906.01$140,223
Sep 20062,2332,71560.085.04$147,835
Aug 20062,0472,92668.717.34$162,126
Jul 20062,4402,92069.376.34$187,784
Jun 20062,0832,87666.286.38$156,421
May 20062,4272,90466.016.42$178,864
Apr 20062,0582,60064.397.36$151,652
Mar 20062,3182,75456.707.08$150,937
Feb 20062,3222,43257.597.75$152,575
Jan 20062,4082,72760.598.93$170,262
Dec 20052,4512,78254.9413.42$171,980
Nov 20052,4772,78554.6910.59$164,956
Oct 20052,1642,67858.3413.80$163,193
Sep 20052,2882,82861.4512.08$174,757
Aug 20052,1982,91961.519.80$163,796
Jul 20052,4862,68155.697.84$159,474
Jun 20052,1982,61252.337.38$134,301
May 20052,4972,80145.226.65$131,544
Apr 20052,2462,05949.207.36$125,658
Mar 20052,5152,77050.377.15$146,500
Feb 20052,3572,47045.226.31$122,174
Jan 20052,3602,73443.166.32$119,142
Dec 20042,5932,50039.866.75$120,235
Nov 20042,2622,50045.286.33$118,249
Oct 20042,5482,84249.706.52$145,152
Sep 20042,4152,68843.245.28$118,628
Aug 20042,3563,16842.375.55$117,408
Jul 20042,4393,25638.286.08$113,175
Jun 20042,6573,21636.106.43$116,606
May 20042,5593,04637.486.49$115,694
Apr 20042,1142,95434.475.86$90,175
Mar 20042,4852,98834.365.53$101,909
Feb 20042,6312,69932.455.51$100,246
Jan 20042,6322,92132.036.30$102,704
Dec 20033,1102,92430.266.30$112,535
Nov 20032,1592,99128.804.60$75,923
Oct 20032,6433,19228.174.76$89,646
Sep 20032,6433,25626.314.75$85,001
Aug 20032,8073,47029.765.13$101,336
Jul 20032,8993,27829.415.17$102,210
Jun 20032,5763,07128.565.98$91,944
May 20032,4093,30226.595.97$83,777
Apr 20032,5953,20426.675.41$86,534
Mar 20032,7993,24031.146.10$106,912
Feb 20032,2852,81933.487.93$98,845
Jan 20032,9043,15730.315.58$105,643
Dec 20022,8423,18626.914.85$91,942
Nov 20023,0093,15824.664.14$87,266
Oct 20022,7483,38226.464.23$87,015
Sep 20022,8873,44627.443.64$91,746
Aug 20022,8373,77225.963.16$85,584
Jul 20022,8723,82424.583.06$82,302
Jun 20023,0823,67623.733.34$85,407
May 20022,9933,94024.663.58$87,928
Apr 20022,9313,59323.653.51$81,938
Mar 20023,3073,81122.003.10$84,578
Feb 20023,1623,23518.222.38$65,297
Jan 20023,1973,29917.172.38$62,730
Dec 20013,6143,46416.932.36$69,375
Nov 20013,5323,86418.072.41$73,118
Oct 20013,1633,20219.782.53$70,662
Sep 20013,1693,63524.262.25$85,063
Aug 20013,3634,29724.873.05$96,757
Jul 20013,2724,51623.933.20$92,737
Jun 20013,1404,32824.563.82$93,669
May 20013,3524,01225.524.31$102,824
Apr 20013,1104,04224.685.34$98,320
Mar 20013,7053,95124.545.38$112,163
Feb 20012,9803,19927.755.77$101,144
Jan 20013,7243,48527.478.40$131,568
Dec 20003,5333,45626.889.12$126,494
Nov 20003,4943,51232.215.66$132,413
Oct 20003,6733,81331.235.15$134,328
Sep 20003,4124,10631.875.19$130,036
Aug 20003,5324,49829.644.54$125,113
Jul 20003,7034,62128.534.09$124,545
Jun 20003,5184,25329.304.40$121,779
May 20003,5184,40827.263.68$112,121
Apr 20003,3324,22124.513.12$94,820
Mar 20004,0574,23928.422.86$127,422
Feb 20003,4323,92527.622.73$105,493
Jan 20004,0533,99725.272.48$112,334
Dec 19993,9054,20224.282.42$104,998
Nov 19994,0054,32423.192.43$103,401
Oct 19994,3124,43220.982.80$102,892
Sep 19994,0344,52521.752.62$99,590
Aug 19994,4094,90119.262.88$99,011
Jul 19994,0634,75417.892.37$83,965
Jun 19994,1694,59715.942.36$77,312
May 19994,6164,66015.792.32$83,703
Apr 19993,7854,49615.102.21$67,081
Mar 19994,5494,61512.471.84$65,210
Feb 19994,3854,1659.981.82$51,333
Jan 19994,4944,52910.381.90$55,253
Dec 19984,7784,7249.201.77$52,335
Nov 19984,6793,82410.892.19$59,313
Oct 19984,8505,20512.421.97$70,487
Sep 19984,7605,29412.592.08$70,954
Aug 19984,8315,67511.301.91$65,415
Jul 19984,9836,34011.742.24$72,685
Jun 19985,4786,16111.242.24$75,357
May 19984,7165,73912.622.21$72,178
Apr 19984,4485,36113.042.51$71,433
Mar 19984,9765,51612.802.31$76,432
Feb 19984,8795,19913.952.30$80,015
Jan 19985,6845,88514.702.15$96,236
Dec 19975,1715,75416.322.41$98,264
Nov 19975,7665,78018.193.09$122,734
Oct 19975,2116,08019.253.15$119,463
Sep 19975,2356,20017.742.95$111,189
Aug 19975,8686,46417.862.55$121,316
Jul 19975,4236,43817.582.25$109,802
Jun 19975,6516,35217.242.26$111,761
May 19975,6635,96318.972.31$121,193
Apr 19975,8486,61217.882.08$118,334
Mar 19976,2076,58218.951.94$130,386
Feb 19975,7385,42320.492.21$129,534
Jan 19976,3936,02723.483.54$171,441
Dec 19966,2776,55723.32—$146,380
Nov 19966,3385,79221.97—$139,246
Oct 19966,3046,50923.31—$146,946
Sep 19966,3308,27722.22—$140,653
Aug 19967,1238,15020.26—$144,312
Jul 19966,1236,44519.55—$119,705
Jun 19965,7066,09318.73—$106,873
May 19966,0466,39019.43—$117,474
Apr 19966,7416,67921.51—$144,999
Mar 19966,0855,46019.38—$117,927
Feb 19965,8595,14016.98—$99,486
Jan 19965,2375,54017.07—$89,396
Dec 19955,7355,57617.19—$98,585
Nov 19955,9745,83316.00—$95,584
Oct 19955,8656,32615.43—$90,497
Sep 19956,1736,31416.18—$99,879
Aug 19955,9317,01415.92—$94,422
Jul 19956,4347,67615.24—$98,054
Jun 19955,5406,16816.41—$90,911
May 19956,1336,00017.56—$107,695
Apr 19956,0346,31017.73—$106,983
Mar 19956,6856,53316.44—$109,901
Feb 19955,5605,29216.58—$92,185
Jan 19956,7846,03615.92—$108,001
Dec 19947,4917,05715.03—$112,590
Nov 19946,3235,70315.90—$100,536
Oct 19946,5316,03615.58—$101,753
Sep 19945,3195,55015.29—$81,328
Aug 19946,5366,45516.13—$105,426
Jul 19946,2486,52817.56—$109,715
Jun 19947,1987,25017.09—$123,014
May 19947,3637,73615.88—$116,924
Apr 19947,8817,59914.14—$111,437
Mar 19948,5918,00412.46—$107,044
Feb 19947,9586,83112.50—$99,475
Jan 19948,8937,28012.66—$112,585
Dec 19939,5517,55212.33—$117,764
Nov 19938,1217,51214.49—$117,673
Oct 19939,4258,55915.85—$149,386
Sep 19939,1678,08915.03—$137,780
Aug 19939,4378,78015.66—$147,783
Jul 19939,7058,66215.46—$150,039
Jun 19939,9458,67916.79—$166,977
May 199310,1048,69517.68—$178,639
Apr 199310,7048,91418.05—$193,207
Mar 199310,4348,86318.14—$189,273
Feb 19939,9978,75317.90—$178,946
Jan 199311,2429,32716.93—$190,327

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                    0 bbl  × $106.41 =         $0
Casinghead gas       774 Mcf  × $  3.05 =     $2,357

────────────────────────────────────────────────────
Month total                                   $2,357

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/31066 is the state's own key, not one this site invented.