COBLE "B"

Operated by EXTEX OPERATING COMPANY (P-5 257062) in the LEVELLAND field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 60439District 8AField 53411001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$22.3 M
Jan 1993 – May 2026
Value, last 12 filed months
$356 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 568 leases and 7,034 wells, and the rule below applies to all of them.

Discovered
1945-01-17
as the register files it
Field class
Oil
the register's own label
Between wells
880 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 21.25 acres.

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: ASSOCIATED GAS FIELD LEVELLAND (SAN ANDRES)

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
NGPA7none

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
OilDisposition551,865 bbl$22,071,542
Casinghead gasProduction98,033 Mcf$191,613
Total$22,263,155

44,942 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 (42)

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 33.5728, -102.5233. A lease has no coordinate of its own — that point is the mean of its wells, and they span 5.3 miles.

33.55879, -102.48865 · 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
47.6%
20 of 42 wells
With a plug date
45.2%
19 of 42 wells
Median depth
5,000 ft
35 wells filed one
Completion to plug
32.0 years
median over 11 wells

What the state filed about each well

On the RRC proration schedule
2047.6%
A plug date is filed
1945.2%
BothOn the schedule and plugged. Neither fact cancels the other.
1945.2%
NeitherNo plug date, and not on the schedule.
2252.4%

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, 35 of 42 wells. Median 5,000 ft, with the middle half between 4,943 and 5,018 ft; the shallowest is 4,913 ft and the deepest 5,050 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, 27 of 42 wells, Apr 1970 – Dec 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
Apr 1970 – Dec 2018
27 of 42 wells; 15 filed none
Plug dates filed
Feb 1975 – Aug 2025
19 of 42 wells; 23 filed none

Last completion to plug: a median of 32.0 years across the 11 wells that filed both dates, with the middle half between 26.4 years and 37.7 years. A further 1 well is excluded, because the last completion the Commission holds for it is dated after the plug date. Both dates are the latest of their kind on the wellbore record and they are filed separately, so the two need not run in order. The gap is the distance between two filed dates — it is not a statement of how long the well produced.

42 wells

42-2190018934,943 ftOct 1988Yes
42-2190097984,930 ftFeb 1975Yes
42-21900985344,935 ftMar 2005Yes
42-2193104735WI5,000 ftMay 2025Yes
42-2193187953W5,050 ftMar 2005Yes
42-2193188545W5,035 ftDec 1997Yes
42-21981676314,913 ftOct 2005Yes
42-219821001Yes
42-219009652
42-21931854415,030 ft
42-2193186740W
42-2193188152W5,035 ft
42-219816694
42-2198167413
42-2198167514
42-2193185742W5,015 ftDec 2018
42-2193187038W5,015 ftApr 2018
42-2193185643W5,020 ftMar 2002
42-2193430235A4,950 ftJun 1993Apr 2019Yes
42-21931550365,000 ftMay 1993Jul 2020Yes
42-2190097764,929 ftJun 1990
42-219350967A5,000 ftJul 1987Jul 2014Yes
42-21902201104,922 ftDec 1985Jul 2020Yes
42-2193188051W5,020 ftMay 1985May 2006Yes
42-2193186839W5,020 ftMar 1985Jul 2021Yes
42-2190220094,942 ftOct 1984
42-21931042355,000 ftSep 1984Apr 1984Yes
42-2193188350W5,010 ftFeb 1984
42-21981673124,925 ftNov 1983
42-21933598594,980 ftJan 1983
42-2193359958W4,950 ftDec 1982
42-21981677324,923 ftOct 1980
42-2193186644W5,030 ftSep 1980
42-21932751575,000 ftNov 1979
42-21932752565,000 ftNov 1979Oct 2018Yes
42-2190097874,915 ftAug 1979Aug 1986Yes
42-2193188249W5,035 ftAug 1979
42-2193186937W5,005 ftAug 1977
42-2193188448W5,015 ftJul 1977Jul 2020Yes
42-2193185547W5,010 ftJun 1977Aug 2025Yes
42-2193188646W5,005 ftJun 1977Jun 2009Yes
42-219021995Apr 1970

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 20264191106.413.05$44,589
Apr 2026281098.932.87$27,799
Mar 2026479089.753.15$42,990
Feb 2026350063.503.75$22,225
Jan 20263551759.138.00$21,127
Dec 20253423456.664.41$19,528
Nov 20254443058.593.93$26,132
Oct 20253353459.383.30$20,005
Sep 20255404962.743.08$34,030
Aug 20254205463.933.01$27,013
Jul 20255504566.743.32$36,856
Jun 20255091466.483.13$33,882
May 20255254260.553.23$31,925
Apr 20255453662.363.54$34,114
Mar 20254153267.704.27$28,232
Feb 20254712170.884.34$33,476
Jan 2025457874.324.28$33,998
Dec 20245614468.993.12$38,841
Nov 20244316069.052.20$29,892
Oct 20245216271.372.28$37,325
Sep 20244774469.612.36$33,308
Aug 20244703475.632.06$35,616
Jul 20246475479.932.15$51,831
Jun 20243225578.082.63$25,287
May 20246344578.812.20$50,064
Apr 20245175384.451.66$43,749
Mar 20245266880.301.55$42,343
Feb 20246665276.091.78$50,769
Jan 20245376973.023.30$39,439
Dec 20235547671.262.61$39,676
Nov 20235508577.892.81$43,078
Oct 20235327785.443.09$45,692
Sep 20235676489.042.74$50,661
Aug 20234266080.522.67$34,462
Jul 20234906774.852.64$36,854
Jun 20236086968.962.26$42,084
May 20235307970.622.23$37,605
Apr 20236787978.122.24$53,142
Mar 20234905272.852.39$35,821
Feb 20235024675.112.47$37,819
Jan 20235556676.533.39$42,698
Dec 20225334976.415.73$41,007
Nov 20224386585.005.65$37,597
Oct 20226205987.185.86$54,398
Sep 20223466084.888.16$29,858
Aug 20225828894.529.13$55,814
Jul 2022648110101.587.54$66,653
Jun 202259452115.097.98$68,778
May 202242352109.378.43$46,702
Apr 202258852104.226.84$61,637
Mar 202278035108.885.08$85,104
Feb 2022440691.054.86$40,091
Jan 2022615481.844.54$50,350
Dec 20215983071.323.90$42,766
Nov 20217405277.435.24$57,571
Oct 20218075879.795.71$64,722
Sep 20214646269.865.35$32,747
Aug 20215294666.024.22$35,119
Jul 20214384170.783.98$31,165
Jun 20215463369.493.38$38,053
May 20214403563.483.02$28,037
Apr 20213321460.362.76$20,078
Mar 20213814261.302.72$23,469
Feb 20211862857.805.55$10,906
Jan 20214092150.412.81$20,677
Dec 2020569244.642.68$25,406
Nov 2020300038.772.71$11,631
Oct 2020134036.972.48$4,954
Sep 20203051137.091.99$11,334
Aug 202025939.982.39$1,021
Jul 20201291338.371.83$4,973
Jun 2020144634.901.69$5,036
May 20201591616.921.81$2,719
Apr 20201642114.751.80$2,457
Mar 20208727030.341.86$26,586
Feb 20207428049.881.98$37,169
Jan 20208336257.252.09$47,819
Dec 20191,0354959.012.30$61,188
Nov 20196449555.302.75$35,875
Oct 201977612253.472.42$41,788
Sep 201960911955.052.66$33,842
Aug 20198227553.112.30$43,829
Jul 201973916756.272.46$41,994
Jun 20196569452.782.49$34,858
May 20196753158.482.74$39,559
Apr 20195833462.632.75$36,607
Mar 2019729056.803.06$41,407
Feb 2019550250.852.79$27,973
Jan 20197642046.033.23$35,231
Dec 20187497346.594.19$35,201
Nov 20188914952.934.24$47,368
Oct 201871413361.443.40$44,320
Sep 201886114759.543.11$51,721
Aug 201884315359.403.07$50,543
Jul 201895215565.142.93$62,468
Jun 201865713660.183.08$39,957
May 201881112765.382.90$53,392
Apr 201882111463.842.90$52,743
Mar 201884661561.222.79$53,506
Feb 201887912461.782.77$54,648
Jan 201885313362.874.01$54,161
Dec 201788210457.272.92$50,816
Nov 201789616655.423.12$50,174
Oct 201787220149.292.98$43,581
Sep 201794119147.523.09$45,306
Aug 201775013345.373.00$34,427
Jul 201764713443.873.09$28,798
Jun 201788415342.493.09$38,034
May 201789314845.373.26$40,998
Apr 201780512347.933.21$38,979
Mar 201795413746.772.98$45,027
Feb 201791210850.452.95$46,329
Jan 20171,20414949.413.42$59,999
Dec 201697517448.763.72$48,189
Nov 201646714542.492.64$20,226
Oct 20161,08821946.193.09$50,931
Sep 201688417441.553.10$37,270
Aug 201693622041.442.92$39,431
Jul 20161,31626541.622.92$55,547
Jun 201689916945.352.69$41,224
May 2016349342.521.99$14,845
Apr 20169606736.561.99$35,231
Mar 20161,02813633.011.79$34,178
Feb 201661012726.472.06$16,409
Jan 20161,02514927.352.36$28,386
Dec 201570116732.362.00$23,019
Nov 201588815038.792.17$34,771
Oct 20151,05120143.552.43$46,259
Sep 20151,04421442.992.76$45,472
Aug 201578218740.162.87$31,942
Jul 201598919648.152.95$48,198
Jun 20151,04721056.152.88$59,394
May 20151,06720455.212.96$59,512
Apr 20151,04418249.822.71$52,505
Mar 20151,04623742.892.93$45,558
Feb 201596542344.662.98$44,356
Jan 20151,21647643.433.10$54,287
Dec 20141,32952654.693.59$74,572
Nov 20141,10840170.464.25$79,775
Oct 20141,16719678.303.90$92,141
Sep 20141,19625186.164.05$104,063
Aug 20141,32029189.394.04$119,169
Jul 20141,13728096.564.18$110,959
Jun 20141,25525598.164.74$124,399
May 20141,05726894.734.73$101,396
Apr 20141,30824595.944.81$126,668
Mar 20141,26125895.895.06$122,222
Feb 20141,13925497.406.19$112,511
Jan 20141,22426490.404.86$111,933
Dec 20131,31414991.824.35$121,300
Nov 20139464588.853.74$84,220
Oct 20131,3352197.423.78$130,135
Sep 20131,0979104.113.72$114,242
Aug 20131,3002104.253.52$135,532
Jul 20139881102.523.72$101,293
Jun 20131,119194.403.93$105,638
May 20131,2093894.834.15$114,807
Apr 20131,28716993.964.28$121,650
Mar 20131,10924993.623.91$104,799
Feb 201390321091.233.42$83,099
Jan 20131,15523891.603.42$106,612
Dec 20121,28127886.773.42$112,103
Nov 20121,38328186.953.62$121,270
Oct 20121,28926489.383.40$116,108
Sep 20121,16425794.672.92$110,946
Aug 20121,43728792.662.91$133,987
Jul 20121,29030885.133.02$110,748
Jun 20121,27327379.822.52$102,299
May 20121,28316991.612.49$117,956
Apr 20121,684208101.652.00$171,594
Mar 20121,531227105.052.22$161,336
Feb 20121,027190101.102.57$104,318
Jan 20121,38524598.092.73$136,525
Dec 20111,37625896.873.24$134,129
Nov 20111,29427495.723.31$124,769
Oct 20111,19822584.983.65$102,627
Sep 20111,53710683.623.99$128,946
Aug 201120711783.404.15$17,749
Jul 201196912394.144.52$91,777
Jun 201180011592.904.64$74,854
May 201194515498.134.40$93,411
Apr 2011989211105.964.33$105,709
Mar 201199218996.364.06$96,356
Feb 20111,01613285.644.18$87,562
Jan 201198911686.504.59$86,081
Dec 201095911085.734.35$82,693
Nov 201093912380.843.80$76,376
Oct 201092031778.103.51$72,964
Sep 201096134572.633.98$71,170
Aug 20101,02936473.684.42$77,425
Jul 201096634872.554.74$71,732
Jun 20101,25144370.364.91$90,196
May 20101,06245371.124.24$77,448
Apr 201095523681.694.12$78,987
Mar 20101,1643678.394.39$91,404
Feb 20107322473.585.44$53,991
Jan 20101,0975274.365.96$81,883
Dec 20099826871.445.48$70,527
Nov 20091,0275974.593.75$76,825
Oct 20091,0705772.544.11$77,852
Sep 20098935165.543.06$58,684
Aug 20091,1235767.423.22$75,896
Jul 20091,0063761.133.46$61,625
Jun 20099754466.163.90$64,677
May 20099955254.743.93$54,670
Apr 20091,0715746.773.59$50,295
Mar 20091,0862042.144.06$45,845
Feb 20091,0024332.814.63$33,075
Jan 20099903635.865.37$35,695
Dec 20081,0259337.105.98$38,583
Nov 20081,0769355.496.86$60,345
Oct 200896212375.246.92$73,232
Sep 20081,03487101.767.88$105,905
Aug 20081,02672114.228.48$117,801
Jul 200897434131.0811.39$128,059
Jun 20081,066127131.3313.03$141,653
May 200885791123.1711.57$106,610
Apr 20081,16366110.3110.45$128,981
Mar 200895715101.909.66$97,663
Feb 20081,031292.538.77$95,416
Jan 20081,0771790.388.21$97,479
Dec 20077952288.337.30$70,383
Nov 200792521291.677.29$86,341
Oct 20071,0806582.856.92$89,928
Sep 20071,0837375.846.24$82,591
Aug 20079657669.066.39$67,128
Jul 20071,0688270.906.39$76,245
Jun 20071,0779962.007.55$67,521
May 20071,17117858.747.85$70,181
Apr 200780522559.617.81$49,742
Mar 20071,09323056.927.30$63,893
Feb 20071,08215455.108.22$60,883
Jan 20071,00122950.306.73$51,891
Dec 20061,10324456.656.92$64,173
Nov 20061,100054.207.62$59,620
Oct 20061,13011654.906.01$62,735
Sep 20061,14810160.085.04$69,481
Aug 20061,105068.717.34$75,925
Jul 20061,25317469.376.34$88,024
Jun 20061,11712566.286.38$74,833
May 20061,180066.016.42$77,892
Apr 20061,064064.397.36$68,511
Mar 20061,2398156.707.08$70,825
Feb 20061,100057.597.75$63,349
Jan 20061,0747560.598.93$65,744
Dec 20051,1861854.9413.42$65,400
Nov 20059105654.6910.59$50,361
Oct 20051,0762958.3413.80$63,174
Sep 20051,13313461.4512.08$71,241
Aug 20051,02914361.519.80$64,695
Jul 20051,1398755.697.84$64,113
Jun 200586617552.337.38$46,609
May 20051,02511045.226.65$47,082
Apr 20056762449.207.36$33,436
Mar 20057965650.377.15$40,495
Feb 20059755345.226.31$44,424
Jan 200594914643.166.32$41,882
Dec 20041,008039.866.75$40,179
Nov 20041,057045.286.33$47,861
Oct 20041,058049.706.52$52,583
Sep 2004937043.245.28$40,516
Aug 20041,366042.375.55$57,877
Jul 20041,151038.286.08$44,060
Jun 20041,118036.106.43$40,360
May 20041,139037.486.49$42,690
Apr 20041,212034.475.86$41,778
Mar 20041,225034.365.53$42,091
Feb 20041,210032.455.51$39,265
Jan 20041,308032.036.30$41,895
Dec 20031,390030.266.30$42,061
Nov 20031,349028.804.60$38,851
Oct 20031,345028.174.76$37,889
Sep 20031,133026.314.75$29,809
Aug 20031,438029.765.13$42,795
Jul 20031,261029.415.17$37,086
Jun 20031,328028.565.98$37,928
May 20031,290026.595.97$34,301
Apr 20031,243026.675.41$33,151
Mar 20031,282031.146.10$39,921
Feb 20031,268033.487.93$42,453
Jan 20031,352030.315.58$40,979
Dec 20021,406026.914.85$37,835
Nov 20021,367024.664.14$33,710
Oct 20021,58126326.464.23$42,946
Sep 20021,42334027.443.64$40,283
Aug 20021,41236025.963.16$37,795
Jul 20021,67539924.583.06$42,393
Jun 20021,12228823.733.34$27,586
May 20021,46127824.663.58$37,025
Apr 20021,46818523.653.51$35,368
Mar 20021,55825222.003.10$35,058
Feb 20021,30322518.222.38$24,275
Jan 20021,4249417.172.38$24,673
Dec 20011,57712116.932.36$26,985
Nov 20011,43017418.072.41$26,259
Oct 20011,31930319.782.53$26,856
Sep 20011,69827024.262.25$41,801
Aug 20011,6929324.873.05$42,364
Jul 20011,72228623.933.20$42,122
Jun 20011,70938624.563.82$43,449
May 20011,75936125.524.31$46,445
Apr 20011,62427524.685.34$41,548
Mar 20011,69720924.545.38$42,768
Feb 20011,58210127.755.77$44,483
Jan 20011,83610227.478.40$51,292
Dec 20001,69616626.889.12$47,103
Nov 20001,70122032.215.66$56,034
Oct 20001,78534131.235.15$57,500
Sep 20001,53530131.875.19$50,482
Aug 20001,72232329.644.54$52,507
Jul 20001,82932128.534.09$53,494
Jun 20001,72330429.304.40$51,821
May 20001,77929227.263.68$49,570
Apr 20001,82328524.513.12$45,570
Mar 20001,76424328.422.86$50,828
Feb 20001,76217927.622.73$49,154
Jan 20002,04119425.272.48$52,057
Dec 19991,75926224.282.42$43,344
Nov 19991,93236223.192.43$45,684
Oct 19991,99340120.982.80$42,937
Sep 19991,85141221.752.62$41,338
Aug 19992,03844419.262.88$40,529
Jul 19992,03345317.892.37$37,445
Jun 19991,96237515.942.36$32,160
May 19992,09434715.792.32$33,870
Apr 19991,99231115.102.21$30,766
Mar 19992,08835412.471.84$26,688
Feb 19991,7392949.981.82$17,890
Jan 19992,23536210.381.90$23,887
Dec 19982,0493669.201.77$19,500
Nov 19981,99638410.892.19$22,576
Oct 19982,22050512.421.97$28,567
Sep 19982,16746112.592.08$28,243
Aug 19981,90046811.301.91$22,363
Jul 19982,19747211.742.24$26,849
Jun 19982,11144611.242.24$24,725
May 19982,09444812.622.21$27,415
Apr 19982,08542213.042.51$28,246
Mar 19982,23640612.802.31$29,558
Feb 19982,12340713.952.30$30,552
Jan 19982,23441914.702.15$33,743
Dec 19972,36338016.322.41$39,480
Nov 19972,35735418.193.09$43,967
Oct 19972,34239819.253.15$46,337
Sep 19972,39940317.742.95$43,749
Aug 19972,59843517.862.55$47,512
Jul 19972,56644617.582.25$46,112
Jun 19972,40841617.242.26$42,453
May 19972,52544018.972.31$48,915
Apr 19972,55948417.882.08$46,763
Mar 19972,53148418.951.94$48,901
Feb 19972,40938820.492.21$50,216
Jan 19972,56940623.483.54$61,757
Dec 19962,55340923.32$59,536
Nov 19962,53042321.97$55,584
Oct 19962,68746323.31$62,634
Sep 19962,61650722.22$58,128
Aug 19962,77756420.26$56,262
Jul 19962,86455019.55$55,991
Jun 19962,66952118.73$49,990
May 19962,91451119.43$56,619
Apr 19962,80444221.51$60,314
Mar 19962,93847819.38$56,938
Feb 19962,91642616.98$49,514
Jan 19963,12045117.07$53,258
Dec 19952,96743917.19$51,003
Nov 19952,75045416.00$44,000
Oct 19953,12266215.43$48,172
Sep 19953,02164316.18$48,880
Aug 19953,21678615.92$51,199
Jul 19953,13570915.24$47,777
Jun 19953,17961116.41$52,167
May 19953,25458917.56$57,140
Apr 19953,23278217.73$57,303
Mar 19953,36787916.44$55,353
Feb 19953,0241,23416.58$50,138
Jan 19953,4441,10615.92$54,828
Dec 19943,33791715.03$50,155
Nov 19943,21688015.90$51,134
Oct 19943,51489415.58$54,748
Sep 19943,5381,28715.29$54,096
Aug 19943,6201,35616.13$58,391
Jul 19943,4121,21517.56$59,915
Jun 19943,5251,41917.09$60,242
May 19943,58283915.88$56,882
Apr 19943,43484914.14$48,557
Mar 19943,6701,24212.46$45,728
Feb 19943,52187912.50$44,013
Jan 19943,7561,02312.66$47,551
Dec 19933,7071,05712.33$45,707
Nov 19933,8431,17814.49$55,685
Oct 19934,0571,19515.85$64,303
Sep 19934,0241,24215.03$60,481
Aug 19934,5071,91215.66$70,580
Jul 19934,5091,75615.46$69,709
Jun 19934,7631,95816.79$79,971
May 19934,7431,71417.68$83,856
Apr 19934,8941,31818.05$88,337
Mar 19934,9941,62318.14$90,591
Feb 19934,5641,51117.90$81,696
Jan 19934,6291,03916.93$78,369

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                  419 bbl  × $106.41 =    $44,586
Casinghead gas         1 Mcf  × $  3.05 =         $3

────────────────────────────────────────────────────
Month total                                  $44,589

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/60439 is the state's own key, not one this site invented.