COOK, I. J.

Operated by SIXESS ENERGY, LLC (P-5 785291) in the YELLOWHOUSE, S. (SAN ANDRES) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 65700District 8AField 99347500OilCasinghead gasSave
Value, all time
$14.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$279 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
OilDisposition336,800 bbl$14,213,687
Casinghead gasProduction107,753 Mcf$308,527
Total$14,522,215

37,941 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 (7)

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 33.7140, -102.4530. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

33.71363, -102.45322 · 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
28.6%
2 of 7 wells
With a plug date
28.6%
2 of 7 wells
Median depth
4,725 ft
7 wells filed one
Completion to plug
21.3 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
228.6%
A plug date is filed
228.6%
BothOn the schedule and plugged. Neither fact cancels the other.
228.6%
NeitherNo plug date, and not on the schedule.
571.4%

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

Between 4,704 and 4,750 ft, median 4,725 ft, over the 7 wells that filed a depth.

Completions filed
Mar 1985 – Jul 1991
7 of 7 wells
Plug dates filed
Nov 2002 – Mar 2022
2 of 7 wells; 5 filed none

Last completion to plug: a median of 21.3 years across the 2 wells that filed both dates, with the middle half between 16.3 years and 26.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

7 wells

42-2193573174,706 ftJul 1991Nov 2002Yes
42-2193490214,750 ftNov 1990Mar 2022Yes
42-2193561224,708 ftOct 1990
42-2193560864,704 ftSep 1990
42-2193497834,750 ftFeb 1987
42-2193499744,735 ftJan 1987
42-2193426254,725 ftMar 1985

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 20263340106.413.05$35,541
Apr 2026683098.932.87$67,569
Mar 2026334089.753.15$29,977
Feb 2026530063.503.75$33,655
Jan 20260059.138.00$0
Dec 2025667056.664.41$37,792
Nov 2025509058.593.93$29,822
Oct 2025345059.383.30$20,486
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 2025363066.483.13$24,132
May 2025335060.553.23$20,284
Apr 2025469062.363.54$29,247
Mar 2025506067.704.27$34,256
Feb 2025322070.884.34$22,823
Jan 2025329074.324.28$24,451
Dec 2024511068.993.12$35,254
Nov 2024527069.052.20$36,389
Oct 2024550071.372.28$39,254
Sep 2024360069.612.36$25,060
Aug 2024631075.632.06$47,723
Jul 2024495079.932.15$39,565
Jun 2024355078.082.63$27,718
May 2024515078.812.20$40,587
Apr 2024648084.451.66$54,724
Mar 2024527080.301.55$42,318
Feb 2024166076.091.78$12,631
Jan 2024339073.023.30$24,754
Dec 2023709071.262.61$50,523
Nov 2023387077.892.81$30,143
Oct 2023657085.443.09$56,134
Sep 2023514089.042.74$45,767
Aug 2023488080.522.67$39,294
Jul 2023519074.852.64$38,847
Jun 2023528068.962.26$36,411
May 2023499070.622.23$35,239
Apr 2023485078.122.24$37,888
Mar 2023494072.852.39$35,988
Feb 2023328075.112.47$24,636
Jan 2023373076.533.39$28,546
Dec 2022364076.415.73$27,813
Nov 2022880085.005.65$74,800
Oct 2022531087.185.86$46,293
Sep 2022876084.888.16$74,355
Aug 2022348094.529.13$32,893
Jul 20223540101.587.54$35,959
Jun 20225210115.097.98$59,962
May 20223320109.378.43$36,311
Apr 20227010104.226.84$73,058
Mar 20225400108.885.08$58,795
Feb 2022692091.054.86$63,007
Jan 2022686081.844.54$56,142
Dec 2021529071.323.90$37,728
Nov 2021348077.435.24$26,946
Oct 2021349079.795.71$27,847
Sep 2021350069.865.35$24,451
Aug 2021528066.024.22$34,859
Jul 2021691070.783.98$48,909
Jun 2021520069.493.38$36,135
May 202170922763.483.02$45,692
Apr 202171418860.362.76$43,616
Mar 202172217961.302.72$44,745
Feb 20211698157.805.55$10,218
Jan 202135214450.412.81$18,149
Dec 202052511244.642.68$23,736
Nov 202017912438.772.71$7,275
Oct 202052218536.972.48$19,757
Sep 202052925737.091.99$20,132
Aug 202086932539.982.39$35,518
Jul 202053627038.371.83$21,059
Jun 202007734.901.69$130
May 2020013616.921.81$247
Apr 202052213514.751.80$7,943
Mar 202069823630.341.86$21,615
Feb 202069717349.881.98$35,109
Jan 202052512457.252.09$30,316
Dec 20191696559.012.30$10,122
Nov 201951423355.302.75$29,065
Oct 201968320253.472.42$37,009
Sep 201932512855.052.66$18,231
Aug 201986316253.112.30$46,207
Jul 201934116356.272.46$19,589
Jun 201951420952.782.49$27,650
May 201951411858.482.74$30,382
Apr 201967414362.632.75$42,606
Mar 201951421456.803.06$29,850
Feb 201969015050.852.79$35,505
Jan 201934010846.033.23$15,999
Dec 2018515046.594.19$23,994
Nov 2018343052.934.24$18,155
Oct 2018324061.443.40$19,907
Sep 20183224759.543.11$19,318
Aug 2018502059.403.07$29,819
Jul 2018509065.142.93$33,156
Jun 2018513060.183.08$30,872
May 201817010965.382.90$11,431
Apr 20185136963.842.90$32,950
Mar 2018513061.222.79$31,406
Feb 2018342061.782.77$21,129
Jan 2018515062.874.01$32,378
Dec 2017857057.272.92$49,080
Nov 2017512055.423.12$28,375
Oct 2017681049.292.98$33,566
Sep 2017513047.523.09$24,378
Aug 2017681045.373.00$30,897
Jul 201751613543.873.09$23,054
Jun 201751632842.493.09$22,937
May 201769658545.373.26$33,487
Apr 201768930647.933.21$34,007
Mar 2017689046.772.98$32,225
Feb 2017522050.452.95$26,335
Jan 20175124049.413.42$25,435
Dec 20166911548.763.72$33,749
Nov 2016518042.492.64$22,010
Oct 2016170046.193.09$7,852
Sep 2016343041.553.10$14,252
Aug 2016688441.442.92$28,522
Jul 20164994141.622.92$20,888
Jun 2016514045.352.69$23,310
May 2016511042.521.99$21,728
Apr 20166842436.561.99$25,055
Mar 2016670033.011.79$22,117
Feb 2016509026.472.06$13,473
Jan 2016340027.352.36$9,299
Dec 2015517032.362.00$16,730
Nov 2015513038.792.17$19,899
Oct 20153421643.552.43$14,933
Sep 201568520742.992.76$30,019
Aug 201551218340.162.87$21,088
Jul 201585531448.152.95$42,093
Jun 201532628856.152.88$19,135
May 201567831155.212.96$38,352
Apr 201567927149.822.71$34,561
Mar 201566225642.892.93$29,144
Feb 201549020244.662.98$22,485
Jan 201568818743.433.10$30,460
Dec 201468924654.693.59$38,565
Nov 201449324270.464.25$35,766
Oct 201449016078.303.90$38,991
Sep 201450819986.164.05$44,574
Aug 201468919889.394.04$62,389
Jul 201467824796.564.18$66,500
Jun 201416920398.164.74$17,551
May 20145047794.734.73$48,108
Apr 201464518895.944.81$62,785
Mar 20146628195.895.06$63,889
Feb 2014511097.406.19$49,771
Jan 2014515090.404.86$46,556
Dec 2013505091.824.35$46,369
Nov 2013841088.853.74$74,723
Oct 20133452097.423.78$33,685
Sep 2013516302104.113.72$54,844
Aug 2013696267104.253.52$73,499
Jul 2013689243102.523.72$71,540
Jun 201316817094.403.93$16,528
May 201366918894.834.15$64,221
Apr 201351320793.964.28$49,088
Mar 201334718993.623.91$33,226
Feb 201352011391.233.42$47,826
Jan 201351520191.603.42$47,861
Dec 201287025786.773.42$76,369
Nov 201251625586.953.62$45,791
Oct 201285229389.383.40$77,148
Sep 201268330394.672.92$65,544
Aug 201251531392.662.91$48,630
Jul 201253220385.133.02$45,902
Jun 201268524679.822.52$55,296
May 201268822791.612.49$63,593
Apr 2012691239101.652.00$70,717
Mar 2012683229105.052.22$72,258
Feb 2012513169101.102.57$52,299
Jan 201234421398.092.73$34,325
Dec 201151613896.873.24$50,432
Nov 201170016395.723.31$67,544
Oct 201169617884.983.65$59,796
Sep 201169121983.623.99$58,654
Aug 201169229583.404.15$58,937
Jul 201153129994.144.52$51,339
Jun 201169128192.904.64$65,498
May 201168827498.134.40$68,720
Apr 2011697297105.964.33$75,141
Mar 201169921296.364.06$68,216
Feb 201152021185.644.18$45,415
Jan 201169623386.504.59$61,273
Dec 201070327785.734.35$61,473
Nov 201077928580.843.80$64,056
Oct 201063423178.103.51$50,326
Sep 201070020372.633.98$51,649
Aug 201069630073.684.42$52,607
Jul 201070327072.554.74$52,282
Jun 201070324870.364.91$50,681
May 201069626371.124.24$50,613
Apr 201052425481.694.12$43,853
Mar 201068623578.394.39$54,807
Feb 201069921673.585.44$52,608
Jan 201069627074.365.96$53,365
Dec 200986619571.445.48$62,936
Nov 200969931874.593.75$53,331
Oct 200970428572.544.11$52,240
Sep 200970129865.543.06$46,857
Aug 200986826967.423.22$59,386
Jul 200986834361.133.46$54,249
Jun 200953032466.163.90$36,327
May 200987626954.743.93$49,008
Apr 200969429246.773.59$33,506
Mar 200985324042.144.06$36,920
Feb 200952816132.814.63$18,070
Jan 200970220235.865.37$26,259
Dec 200886522337.105.98$33,424
Nov 200886121855.496.86$49,272
Oct 200869223075.246.92$53,658
Sep 2008882227101.767.88$91,540
Aug 2008878209114.228.48$102,058
Jul 2008709237131.0811.39$95,635
Jun 2008521217131.3313.03$71,251
May 2008689203123.1711.57$87,214
Apr 2008705196110.3110.45$79,818
Mar 2008703159101.909.66$73,172
Feb 200868717592.538.77$65,103
Jan 20081,02912790.388.21$94,043
Dec 200767512488.337.30$60,528
Nov 200772611991.677.29$67,420
Oct 200771113882.856.92$59,862
Sep 200770112275.846.24$53,926
Aug 20071,05720769.066.39$74,319
Jul 200788226470.906.39$64,220
Jun 200770928762.007.55$46,124
May 200789434058.747.85$55,181
Apr 200771030859.617.81$44,727
Mar 200789120456.927.30$52,205
Feb 200788622655.108.22$50,675
Jan 200788325050.306.73$46,097
Dec 200671123756.656.92$41,918
Nov 200669722154.207.62$39,461
Oct 200672325154.906.01$41,202
Sep 200672025060.085.04$44,517
Aug 200654421068.717.34$38,920
Jul 200672325469.376.34$51,766
Jun 200689924866.286.38$61,169
May 200672627766.016.42$49,703
Apr 20061,08823264.397.36$71,764
Mar 200654319756.707.08$32,183
Feb 200673921957.597.75$44,257
Jan 200689229660.598.93$56,691
Dec 20051,11535654.9413.42$66,034
Nov 200571628554.6910.59$42,176
Oct 200553123358.3413.80$34,193
Sep 200590823761.4512.08$58,659
Aug 200572428161.519.80$47,286
Jul 200590226255.697.84$52,287
Jun 200572232752.337.38$40,196
May 20051,06730245.226.65$50,258
Apr 200569729249.207.36$36,442
Mar 200589634550.377.15$47,600
Feb 20051,03835145.226.31$49,154
Jan 200589832343.166.32$40,800
Dec 200489536439.866.75$38,132
Nov 20041,06428745.286.33$49,995
Oct 200472231749.706.52$37,949
Sep 20041,09040943.245.28$49,293
Aug 20041,08346442.375.55$48,462
Jul 200490043338.286.08$37,086
Jun 200490243236.106.43$35,341
May 20041,09944837.486.49$44,100
Apr 200473635134.475.86$27,426
Mar 200492739334.365.53$34,025
Feb 200471830732.455.51$24,991
Jan 20041,04134032.036.30$35,485
Dec 200390430930.266.30$29,302
Nov 200391731228.804.60$27,843
Oct 200393041128.174.76$28,154
Sep 200391534926.314.75$25,731
Aug 200391736429.765.13$29,157
Jul 200391134729.415.17$28,587
Jun 200390239128.565.98$28,100
May 200372537826.595.97$21,535
Apr 200392036326.675.41$26,499
Mar 200393133831.146.10$31,052
Feb 20031,09526733.487.93$38,777
Jan 200392931430.315.58$29,911
Dec 200275933626.914.85$22,056
Nov 200274226224.664.14$19,382
Oct 200292630726.464.23$25,800
Sep 200275234927.443.64$21,904
Aug 200291736425.963.16$24,957
Jul 20021,12441024.583.06$28,883
Jun 200273631423.733.34$18,513
May 20021,08539724.663.58$28,179
Apr 200292234623.653.51$23,021
Mar 200273128922.003.10$16,979
Feb 200292429318.222.38$17,531
Jan 20021,10526217.172.38$19,595
Dec 200191532116.932.36$16,250
Nov 200190039818.072.41$17,220
Oct 20011,07640119.782.53$22,297
Sep 200187538224.262.25$22,088
Aug 20011,05738124.873.05$27,451
Jul 20011,05937823.933.20$26,550
Jun 200171933224.563.82$18,928
May 200186740925.524.31$23,888
Apr 20011,06136524.685.34$28,133
Mar 200190336624.545.38$24,127
Feb 20011,06531327.755.77$31,359
Jan 200190530627.478.40$27,430
Dec 200089634526.889.12$27,232
Nov 20001,08432932.215.66$36,777
Oct 200088034331.235.15$29,247
Sep 20001,05638231.875.19$35,636
Aug 20001,07243629.644.54$33,754
Jul 20001,03743228.534.09$31,352
Jun 200086242329.304.40$27,117
May 20001,25952527.263.68$36,252
Apr 200090239524.513.12$23,339
Mar 200090933928.422.86$26,803
Feb 200090034427.622.73$25,796
Jan 20001,08032725.272.48$28,103
Dec 19991,06231424.282.42$26,546
Nov 199991834723.192.43$22,133
Oct 19991,11634520.982.80$24,381
Sep 19991,09620421.752.62$24,372
Aug 199991913919.262.88$18,100
Jul 19991,08225217.892.37$19,955
Jun 19991,11248915.942.36$18,880
May 199990238715.792.32$15,141
Apr 19991,13938115.102.21$18,040
Mar 19991,26033812.471.84$16,334
Feb 19999312959.981.82$9,828
Jan 19991,28025910.381.90$13,778
Dec 19981,0922919.201.77$10,562
Nov 19981,08924710.892.19$12,399
Oct 199891223112.421.97$11,782
Sep 19981,04625612.592.08$13,702
Aug 19981,09030411.301.91$12,897
Jul 19981,26543611.742.24$15,827
Jun 19981,09638811.242.24$13,187
May 19981,25739712.622.21$16,739
Apr 19981,10629513.042.51$15,161
Mar 19981,31537612.802.31$17,700
Feb 19981,12433813.952.30$16,457
Jan 19981,11532114.702.15$17,082
Dec 19971,27932916.322.41$21,667
Nov 19971,26627318.193.09$23,872
Oct 19971,63233819.253.15$32,481
Sep 19971,09634217.742.95$20,454
Aug 19971,24033317.862.55$22,997
Jul 19971,29126817.582.25$23,298
Jun 19971,51448517.242.26$27,196
May 19971,27362218.972.31$25,585
Apr 19971,19624117.882.08$21,886
Mar 19971,41642618.951.94$27,659
Feb 19971,12745920.492.21$24,105
Jan 19971,45143923.483.54$35,623
Dec 19961,28060223.32$29,850
Nov 19961,42357021.97$31,263
Oct 19961,39745023.31$32,564
Sep 19961,25848922.22$27,953
Aug 19961,39652320.26$28,283
Jul 19961,38146819.55$26,999
Jun 19961,35549118.73$25,379
May 19961,39847619.43$27,163
Apr 19961,32124721.51$28,415
Mar 19961,73428619.38$33,605
Feb 19961,19343916.98$20,257
Jan 19961,52010117.07$25,946
Dec 19951,53140417.19$26,318
Nov 19951,72128616.00$27,536
Oct 19951,48869015.43$22,960
Sep 19951,59995316.18$25,872
Aug 19951,73598115.92$27,621
Jul 19951,7891,17615.24$27,264
Jun 19951,7951,18116.41$29,456
May 19952,0051,25217.56$35,208
Apr 19951,85989817.73$32,960
Mar 19952,50699316.44$41,199
Feb 19951,5991,04416.58$26,511
Jan 19951,62572615.92$25,870
Dec 19941,76589315.03$26,528
Nov 19941,79097715.90$28,461
Oct 19942,14096015.58$33,341
Sep 19941,61089915.29$24,617
Aug 19942,2881,15116.13$36,905
Jul 19941,73498017.56$30,449
Jun 19941,9221,32717.09$32,847
May 19941,93382815.88$30,696
Apr 19941,95777014.14$27,672
Mar 19942,46482812.46$30,701
Feb 19941,92371312.50$24,038
Jan 19942,12285612.66$26,865
Dec 19932,27661012.33$28,063
Nov 19932,10159414.49$30,443
Oct 19931,94187115.85$30,765
Sep 19932,14685515.03$32,254
Aug 19931,94891515.66$30,506
Jul 19932,1491,53515.46$33,224
Jun 19932,30353116.79$38,667
May 19932,1555017.68$38,100
Apr 19931,9761,37718.05$35,667
Mar 19932,4901,27818.14$45,169
Feb 19932,0061,26017.90$35,907
Jan 19932,4451,15716.93$41,394

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                  334 bbl  × $106.41 =    $35,541
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $35,541

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/65700 is the state's own key, not one this site invented.