GILLIS, J. H.

Operated by SEITZ, J. R. & ADAM, LTD. (P-5 764665) in the COOKE COUNTY REGULAR field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12490District 09Field 20350001OilCasinghead gasSaveExport
Value, all time
$7.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$120 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 805 leases and 4,250 wells, and the rule below applies to all of them.

Discovered
1926-12-31
as the register files it
Field class
Oil and gas
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

The Commission's schedule remark for this field reads: 6001 - 8000 DAILY 99

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
OilDisposition192,524 bbl$7,536,133
Casinghead gasProduction21 Mcf$0
Total$7,536,133

21 Mcf of this lease's gas, across 21 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 (6)

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 33.6028, -96.9850. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

33.60273, -96.98466 · 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
83.3%
5 of 6 wells
With a plug date
33.3%
2 of 6 wells
Median depth
4,455 ft
6 wells filed one
Completion to plug
27.2 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
583.3%
A plug date is filed
233.3%
BothOn the schedule and plugged. Neither fact cancels the other.
233.3%
NeitherNo plug date, and not on the schedule.
116.7%

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 4,280 and 4,677 ft, median 4,455 ft, over the 6 wells that filed a depth.

Completions filed
Jun 1978 – Aug 2005
6 of 6 wells
Plug dates filed
Sep 2021 – Nov 2021
2 of 6 wells; 4 filed none

Last completion to plug: a median of 27.2 years across the 2 wells that filed both dates, with the middle half between 24.3 years and 30.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

6 wells

42-0973368864,400 ftAug 2005
42-0973289844,488 ftJul 2000Nov 2021Yes
42-0973294254,280 ftSep 1988Sep 2021Yes
42-0973176934,451 ftMay 1986Yes
42-0978310024,459 ftJun 1978Yes
42-0970196114,677 ftJun 1978Yes

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 20261260106.413.05$13,408
Apr 2026132098.932.87$13,059
Mar 2026196089.753.15$17,591
Feb 2026128063.503.75$8,128
Jan 202665059.138.00$3,843
Dec 2025130056.664.41$7,366
Nov 2025195058.593.93$11,425
Oct 2025134059.383.30$7,957
Sep 2025127062.743.08$7,968
Aug 2025128063.933.01$8,183
Jul 2025130066.743.32$8,676
Jun 2025186066.483.13$12,365
May 2025128060.553.23$7,750
Apr 2025195062.363.54$12,160
Mar 2025128067.704.27$8,666
Feb 2025191070.884.34$13,538
Jan 2025126074.324.28$9,364
Dec 2024192068.993.12$13,246
Nov 202463069.052.20$4,350
Oct 2024188071.372.28$13,418
Sep 2024192069.612.36$13,365
Aug 202464075.632.06$4,840
Jul 2024187079.932.15$14,947
Jun 2024140078.082.63$10,931
May 2024189078.812.20$14,895
Apr 2024131084.451.66$11,063
Mar 2024132080.301.55$10,600
Feb 2024128076.091.78$9,740
Jan 2024201073.023.30$14,677
Dec 2023135071.262.61$9,620
Nov 2023191077.892.81$14,877
Oct 2023130085.443.09$11,107
Sep 2023194089.042.74$17,274
Aug 2023190080.522.67$15,299
Jul 2023128074.852.64$9,581
Jun 2023190068.962.26$13,102
May 2023189070.622.23$13,347
Apr 2023126078.122.24$9,843
Mar 2023126072.852.39$9,179
Feb 2023125075.112.47$9,389
Jan 2023251076.533.39$19,209
Dec 2022130076.415.73$9,933
Nov 2022192085.005.65$16,320
Oct 2022194087.185.86$16,913
Sep 2022176084.888.16$14,939
Aug 2022185094.529.13$17,486
Jul 20221860101.587.54$18,894
Jun 20221890115.097.98$21,752
May 20222570109.378.43$28,108
Apr 20221210104.226.84$12,611
Mar 20221890108.885.08$20,578
Feb 202274091.054.86$6,738
Jan 202274081.844.54$6,056
Dec 202193071.323.90$6,633
Nov 202147077.435.24$3,639
Oct 202125079.795.71$1,995
Sep 202148069.865.35$3,353
Aug 202148066.024.22$3,169
Jul 202148070.783.98$3,397
Jun 202148069.493.38$3,336
May 202148063.483.02$3,047
Apr 202124060.362.76$1,449
Mar 2021209061.302.72$12,812
Feb 2021209057.805.55$12,080
Jan 2021215050.412.81$10,838
Dec 2020102044.642.68$4,553
Nov 2020206038.772.71$7,987
Oct 2020212036.972.48$7,838
Sep 2020207037.091.99$7,678
Aug 2020211039.982.39$8,436
Jul 2020209038.371.83$8,019
Jun 2020225034.901.69$7,853
May 20200016.921.81$0
Apr 2020241014.751.80$3,555
Mar 2020213030.341.86$6,462
Feb 2020206049.881.98$10,275
Jan 2020101057.252.09$5,782
Dec 2019212059.012.30$12,510
Nov 2019214055.302.75$11,834
Oct 2019209053.472.42$11,175
Sep 2019205055.052.66$11,285
Aug 2019204053.112.30$10,834
Jul 2019312056.272.46$17,556
Jun 2019205052.782.49$10,820
May 2019205058.482.74$11,988
Apr 2019210062.632.75$13,152
Mar 2019307056.803.06$17,438
Feb 2019100050.852.79$5,085
Jan 2019206046.033.23$9,482
Dec 2018207046.594.19$9,644
Nov 2018309052.934.24$16,355
Oct 2018208061.443.40$12,780
Sep 2018208059.543.11$12,384
Aug 2018209059.403.07$12,415
Jul 2018312065.142.93$20,324
Jun 2018214060.183.08$12,879
May 2018212065.382.90$13,861
Apr 2018101063.842.90$6,448
Mar 2018208061.222.79$12,734
Feb 20180061.782.77$0
Jan 2018198062.874.01$12,448
Dec 2017107057.272.92$6,128
Nov 2017213055.423.12$11,804
Oct 2017312049.292.98$15,378
Sep 2017206047.523.09$9,789
Aug 2017207045.373.00$9,392
Jul 2017203043.873.09$8,906
Jun 2017206042.493.09$8,753
May 2017316045.373.26$14,337
Apr 2017204047.933.21$9,778
Mar 2017199046.772.98$9,307
Feb 2017202050.452.95$10,191
Jan 2017204049.413.42$10,080
Dec 2016204048.763.72$9,947
Nov 2016209042.492.64$8,880
Oct 2016203046.193.09$9,377
Sep 2016100041.553.10$4,155
Aug 2016211041.442.92$8,744
Jul 2016212041.622.92$8,823
Jun 2016213045.352.69$9,660
May 2016211042.521.99$8,972
Apr 2016210036.561.99$7,678
Mar 2016207033.011.79$6,833
Feb 2016107026.472.06$2,832
Jan 2016210027.352.36$5,744
Dec 2015312032.362.00$10,096
Nov 2015102038.792.17$3,957
Oct 2015213043.552.43$9,276
Sep 2015205042.992.76$8,813
Aug 2015324040.162.87$13,012
Jul 2015319048.152.95$15,360
Jun 2015100056.152.88$5,615
May 2015319055.212.96$17,612
Apr 2015207049.822.71$10,313
Mar 2015211042.892.93$9,050
Feb 2015106044.662.98$4,734
Jan 2015207043.433.10$8,990
Dec 2014211054.693.59$11,540
Nov 2014111070.464.25$7,821
Oct 2014217078.303.90$16,991
Sep 2014217086.164.05$18,697
Aug 2014213089.394.04$19,040
Jul 2014318096.564.18$30,706
Jun 2014209098.164.74$20,515
May 2014216094.734.73$20,462
Apr 2014212095.944.81$20,339
Mar 2014214095.895.06$20,520
Feb 2014297097.406.19$28,928
Jan 2014102090.404.86$9,221
Dec 2013200091.824.35$18,364
Nov 2013291088.853.74$25,855
Oct 2013202097.423.78$19,679
Sep 20133010104.113.72$31,337
Aug 20131970104.253.52$20,537
Jul 20132960102.523.72$30,346
Jun 2013204094.403.93$19,258
May 2013198094.834.15$18,776
Apr 2013305093.964.28$28,658
Mar 2013191093.623.91$17,881
Feb 2013193091.233.42$17,607
Jan 2013296091.603.42$27,114
Dec 20120086.773.42$0
Nov 2012200086.953.62$17,390
Oct 2012296089.383.40$26,456
Sep 2012300094.672.92$28,401
Aug 2012300092.662.91$27,798
Jul 2012398085.133.02$33,882
Jun 2012199079.822.52$15,884
May 2012405091.612.49$37,102
Apr 20123010101.652.00$30,597
Mar 20123010105.052.22$31,620
Feb 20123020101.102.57$30,532
Jan 2012305098.092.73$29,917
Dec 2011401096.873.24$38,845
Nov 2011300095.723.31$28,716
Oct 2011394084.983.65$33,482
Sep 2011301083.623.99$25,170
Aug 2011399083.404.15$33,277
Jul 2011244094.144.52$22,970
Jun 2011400092.904.64$37,160
May 2011300098.134.40$29,439
Apr 20112010105.964.33$21,298
Mar 2011384096.364.06$37,002
Feb 2011197085.644.18$16,871
Jan 2011299086.504.59$25,864
Dec 2010399085.734.35$34,206
Nov 2010298080.843.80$24,090
Oct 2010397078.103.51$31,006
Sep 2010295072.633.98$21,426
Aug 2010298073.684.42$21,957
Jul 2010294072.554.74$21,330
Jun 2010398070.364.91$28,003
May 2010299071.124.24$21,265
Apr 2010301081.694.12$24,589
Mar 2010394078.394.39$30,886
Feb 2010398073.585.44$29,285
Jan 2010497074.365.96$36,957
Dec 2009399071.445.48$28,505
Nov 2009295074.593.75$22,004
Oct 2009493072.544.11$35,762
Sep 2009393065.543.06$25,757
Aug 2009384067.423.22$25,889
Jul 2009383061.133.46$23,413
Jun 2009394066.163.90$26,067
May 2009399054.743.93$21,841
Apr 2009301046.773.59$14,078
Mar 2009300042.144.06$12,642
Feb 2009296032.814.63$9,712
Jan 2009401035.865.37$14,380
Dec 2008292037.105.98$10,833
Nov 2008403055.496.86$22,362
Oct 2008400075.246.92$30,096
Sep 20085030101.767.88$51,185
Aug 20084030114.228.48$46,031
Jul 20084010131.0811.39$52,563
Jun 20084030131.3313.03$52,926
May 20085020123.1711.57$61,831
Apr 20084050110.3110.45$44,676
Mar 20085070101.909.66$51,663
Feb 2008502092.538.77$46,450
Jan 2008502090.388.21$45,371
Dec 2007404088.337.30$35,685
Nov 2007506091.677.29$46,385
Oct 2007501082.856.92$41,508
Sep 2007303075.846.24$22,980
Aug 2007403069.066.39$27,831
Jul 2007505070.906.39$35,805
Jun 2007504062.007.55$31,248
May 2007501058.747.85$29,429
Apr 2007504059.617.81$30,043
Mar 2007601056.927.30$34,209
Feb 2007598055.108.22$32,950
Jan 2007502050.306.73$25,251
Dec 2006703056.656.92$39,825
Nov 2006611054.207.62$33,116
Oct 2006707054.906.01$38,814
Sep 2006605060.085.04$36,348
Aug 2006809068.717.34$55,586
Jul 2006716069.376.34$49,669
Jun 2006808066.286.38$53,554
May 2006904066.016.42$59,673
Apr 2006998064.397.36$64,261
Mar 2006985056.707.08$55,850
Feb 20061,101057.597.75$63,407
Jan 20061,286060.598.93$77,919
Dec 20051,210054.9413.42$66,477
Nov 20051,494054.6910.59$81,707
Oct 20051,482058.3413.80$86,460
Sep 20051,377061.4512.08$84,617
Aug 2005703061.519.80$43,242
Jul 2005301055.697.84$16,763
Jun 2005399052.337.38$20,880
May 2005506045.226.65$22,881
Apr 2005403049.207.36$19,828
Mar 2005500050.377.15$25,185
Feb 2005506045.226.31$22,881
Jan 2005504043.166.32$21,753
Dec 2004398039.866.75$15,864
Nov 2004401045.286.33$18,157
Oct 2004500049.706.52$24,850
Sep 2004403043.245.28$17,426
Aug 2004505042.375.55$21,397
Jul 2004409038.286.08$15,657
Jun 2004607036.106.43$21,913
May 2004406037.486.49$15,217
Apr 2004507034.475.86$17,476
Mar 2004605034.365.53$20,788
Feb 2004400032.455.51$12,980
Jan 2004502032.036.30$16,079
Dec 2003609030.266.30$18,428
Nov 2003402028.804.60$11,578
Oct 2003608028.174.76$17,127
Sep 2003601026.314.75$15,812
Aug 2003408029.765.13$12,142
Jul 2003621029.415.17$18,264
Jun 2003522028.565.98$14,908
May 2003619026.595.97$16,459
Apr 2003717026.675.41$19,122
Mar 2003515031.146.10$16,037
Feb 2003615033.487.93$20,590
Jan 2003515030.315.58$15,610
Dec 2002615026.914.85$16,550
Nov 2002409024.664.14$10,086
Oct 2002509026.464.23$13,468
Sep 2002516027.443.64$14,159
Aug 2002615025.963.16$15,965
Jul 2002518024.583.06$12,732
Jun 2002531023.733.34$12,601
May 2002516024.663.58$12,725
Apr 2002628023.653.51$14,852
Mar 2002512022.003.10$11,264
Feb 2002515018.222.38$9,383
Jan 2002519017.172.38$8,911
Dec 2001413016.932.36$6,992
Nov 2001622018.072.41$11,240
Oct 2001522019.782.53$10,325
Sep 2001523024.262.25$12,688
Aug 2001620024.873.05$15,419
Jul 2001525023.933.20$12,563
Jun 2001618024.563.82$15,178
May 2001726025.524.31$18,528
Apr 2001620024.685.34$15,302
Mar 2001631024.545.38$15,485
Feb 2001762027.755.77$21,146
Jan 2001628027.478.40$17,251
Dec 2000602026.889.12$16,182
Nov 2000747032.215.66$24,061
Oct 2000641031.235.15$20,018
Sep 2000714031.875.19$22,755
Aug 2000582029.644.54$17,250
Jul 2000582028.534.09$16,604
Jun 2000692029.304.40$20,276
May 2000553027.263.68$15,075
Apr 2000447024.513.12$10,956
Mar 2000597028.422.86$16,967
Feb 2000595027.622.73$16,434
Jan 2000609025.272.48$15,389
Dec 1999600024.282.42$14,568
Nov 1999811023.192.43$18,807
Oct 1999570020.982.80$11,959
Sep 1999811021.752.62$17,639
Aug 1999553019.262.88$10,651
Jul 1999681017.892.37$12,183
Jun 1999612015.942.36$9,755
May 1999703015.792.32$11,100
Apr 1999632015.102.21$9,543
Mar 1999735012.471.84$9,165
Feb 199962009.981.82$6,188
Jan 1999831010.381.90$8,626
Dec 199862009.201.77$5,704
Nov 1998720010.892.19$7,841
Oct 1998571012.421.97$7,092
Sep 1998700012.592.08$8,813
Aug 1998735011.301.91$8,306
Jul 1998708011.742.24$8,312
Jun 1998509011.242.24$5,721
May 1998616012.622.21$7,774
Apr 1998717013.042.51$9,350
Mar 1998715012.802.31$9,152
Feb 1998686013.952.30$9,570
Jan 1998685014.702.15$10,070
Dec 1997822016.322.41$13,415
Nov 1997689018.193.09$12,533
Oct 1997704019.253.15$13,552
Sep 1997733017.742.95$13,003
Aug 1997596017.862.55$10,645
Jul 1997807017.582.25$14,187
Jun 1997926017.242.26$15,964
May 1997644018.972.31$12,217
Apr 1997860017.882.08$15,377
Mar 1997764018.951.94$14,478
Feb 1997613020.492.21$12,560
Jan 1997851023.483.54$19,981
Dec 1996757023.32$17,653
Nov 1996640021.97$14,061
Oct 19961,066023.31$24,848
Sep 1996835022.22$18,554
Aug 19961,034020.26$20,949
Jul 19961,032019.55$20,176
Jun 1996918018.73$17,194
May 19961,136019.43$22,072
Apr 19961,419021.51$30,523
Mar 19961,007019.38$19,516
Feb 19961,242016.98$21,089
Jan 19961,233017.07$21,047
Dec 19951,334017.19$22,931
Nov 19951,008016.00$16,128
Oct 19951,124015.43$17,343
Sep 19951,198016.18$19,384
Aug 19951,515015.92$24,119
Jul 19951,135015.24$17,297
Jun 19951,050016.41$17,231
May 19951,267017.56$22,249
Apr 19951,138017.73$20,177
Mar 19951,341016.44$22,046
Feb 19951,171016.58$19,415
Jan 19951,277015.92$20,330
Dec 19941,182015.03$17,765
Nov 19941,274015.90$20,257
Oct 19941,147015.58$17,870
Sep 19941,148115.29$17,553
Aug 19941,228116.13$19,808
Jul 19941,299117.56$22,810
Jun 19941,036117.09$17,705
May 19941,215115.88$19,294
Apr 19941,215114.14$17,180
Mar 19941,323112.46$16,485
Feb 19941,210112.50$15,125
Jan 19941,496112.66$18,939
Dec 19931,597112.33$19,691
Nov 19931,178114.49$17,069
Oct 19931,711115.85$27,119
Sep 19931,885115.03$28,332
Aug 19931,344115.66$21,047
Jul 19931,364115.46$21,087
Jun 19931,363116.79$22,885
May 19931,173117.68$20,739
Apr 19931,305118.05$23,555
Mar 19931,283118.14$23,274
Feb 19931,136117.90$20,334
Jan 19931,234116.93$20,892

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                  126 bbl  × $106.41 =    $13,408
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $13,408

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. 09/O/12490 is the state's own key, not one this site invented.