MAYFIELD 40

Operated by UPP OPERATING, LLC (P-5 875310) in the SAWYER (CANYON) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Gas lease lease 139180District 7CField 812673332 tax incentive programmesCondensateGasSaveExport
Value, all time
$1.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$12 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
condensate, 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 6,629 leases and 6,629 wells, and the rule below applies to all of them.

Discovered
1967-07-01
as the register files it
Field class
Gas
the register's own label
Between wells
1,000 ft
minimum
From a lease line
500 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 2003-06-24.

The Commission's schedule remark for this field reads: FIELD PER ORDER 7C-0234582 6/2403

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
High Cost Gas111991-11-30123921
NGPA1none

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
CondensateDisposition232 bbl$12,213
GasProduction409,836 Mcf$1,467,127
Total$1,479,339

63,040 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 (1)

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 30.5652, -100.8028. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.56522, -100.80283 · 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 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
8,172 ft
1 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.
1100.0%

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

The one well that filed a depth was drilled to 8,172 ft.

Completions filed
Jun 1991
1 of 1 wells

1 well

42-4353374748,172 ftJun 1991

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 20260269106.413.05$819
Apr 2026026798.932.87$766
Mar 2026027989.753.15$879
Feb 2026024663.503.75$923
Jan 2026026459.138.00$2,111
Dec 2025026856.664.41$1,183
Nov 2025026258.593.93$1,029
Oct 2025027359.383.30$902
Sep 2025026562.743.08$815
Aug 2025025763.933.01$775
Jul 2025026066.743.32$862
Jun 2025024666.483.13$770
May 2025025160.553.23$811
Apr 2025024862.363.54$879
Mar 2025022367.704.27$952
Feb 2025021870.884.34$946
Jan 2025024074.324.28$1,027
Dec 2024024268.993.12$755
Nov 2024023269.052.20$510
Oct 2024024771.372.28$564
Sep 2024024469.612.36$577
Aug 2024023775.632.06$489
Jul 2024023979.932.15$513
Jun 2024022978.082.63$603
May 2024023378.812.20$512
Apr 2024021884.451.66$362
Mar 2024022480.301.55$346
Feb 2024021876.091.78$389
Jan 2024022273.023.30$732
Dec 2023022671.262.61$590
Nov 2023022877.892.81$640
Oct 2023018585.443.09$571
Sep 2023022489.042.74$613
Aug 2023023180.522.67$617
Jul 2023023374.852.64$616
Jun 2023022568.962.26$508
May 2023023270.622.23$517
Apr 2023022878.122.24$510
Mar 2023024072.852.39$574
Feb 2023020175.112.47$496
Jan 2023024176.533.39$816
Dec 2022024076.415.73$1,375
Nov 2022023185.005.65$1,304
Oct 2022024087.185.86$1,407
Sep 2022023284.888.16$1,894
Aug 2022024494.529.13$2,227
Jul 20220243101.587.54$1,833
Jun 20220235115.097.98$1,875
May 20220241109.378.43$2,032
Apr 20220232104.226.84$1,586
Mar 20220243108.885.08$1,234
Feb 2022022591.054.86$1,093
Jan 2022024581.844.54$1,112
Dec 2021024871.323.90$967
Nov 2021024277.435.24$1,267
Oct 2021025079.795.71$1,428
Sep 2021024369.865.35$1,300
Aug 2021025866.024.22$1,089
Jul 2021025770.783.98$1,023
Jun 2021024869.493.38$838
May 2021023563.483.02$709
Apr 2021025160.362.76$692
Mar 2021026461.302.72$717
Feb 2021017257.805.55$954
Jan 2021024850.412.81$697
Dec 2020024744.642.68$661
Nov 2020024138.772.71$652
Oct 2020025136.972.48$622
Sep 2020022537.091.99$448
Aug 2020025039.982.39$596
Jul 2020021238.371.83$387
Jun 2020024334.901.69$411
May 2020024516.921.81$445
Apr 2020022114.751.80$399
Mar 2020020230.341.86$375
Feb 2020021949.881.98$434
Jan 2020023257.252.09$486
Dec 2019022159.012.30$509
Nov 2019019955.302.75$547
Oct 2019028753.472.42$694
Sep 2019041355.052.66$1,097
Aug 2019030753.112.30$707
Jul 2019031856.272.46$782
Jun 2019032352.782.49$805
May 2019033658.482.74$921
Apr 2019035062.632.75$963
Mar 2019033856.803.06$1,035
Feb 2019033050.852.79$921
Jan 2019037746.033.23$1,217
Dec 2018040746.594.19$1,703
Nov 2018041352.934.24$1,750
Oct 2018044861.443.40$1,522
Sep 2018045759.543.11$1,420
Aug 2018048559.403.07$1,487
Jul 2018050465.142.93$1,478
Jun 2018051060.183.08$1,569
May 2018057265.382.90$1,659
Apr 2018059163.842.90$1,714
Mar 2018067861.222.79$1,889
Feb 2018067861.782.77$1,875
Jan 2018072862.874.01$2,919
Dec 2017021157.272.92$616
Nov 2017023655.423.12$736
Oct 2017128349.292.98$894
Sep 2017025547.523.09$787
Aug 2017026545.373.00$796
Jul 2017028043.873.09$864
Jun 2017025842.493.09$797
May 2017027345.373.26$891
Apr 2017029047.933.21$931
Mar 2017026346.772.98$785
Feb 2017024950.452.95$735
Jan 2017027749.413.42$947
Dec 2016027948.763.72$1,039
Nov 2016127342.492.64$764
Oct 2016028146.193.09$868
Sep 2016127841.553.10$904
Aug 2016028141.442.92$822
Jul 2016128941.622.92$887
Jun 2016027845.352.69$747
May 2016028442.521.99$565
Apr 2016227236.561.99$615
Mar 2016029233.011.79$524
Feb 2016027126.472.06$559
Jan 2016029127.352.36$688
Dec 2015028432.362.00$568
Nov 2015029038.792.17$629
Oct 2015028843.552.43$699
Sep 2015027242.992.76$750
Aug 2015028940.162.87$830
Jul 2015029848.152.95$878
Jun 2015030056.152.88$865
May 2015130355.212.96$951
Apr 2015130149.822.71$865
Mar 2015032542.892.93$954
Feb 2015132044.662.98$997
Jan 2015232543.433.10$1,095
Dec 2014131154.693.59$1,172
Nov 2014031570.464.25$1,339
Oct 2014135678.303.90$1,467
Sep 2014033086.164.05$1,335
Aug 2014031889.394.04$1,283
Jul 2014331896.564.18$1,619
Jun 2014030098.164.74$1,421
May 2014133794.734.73$1,688
Apr 2014037395.944.81$1,794
Mar 2014130195.895.06$1,618
Feb 2014034797.406.19$2,149
Jan 2014140190.404.86$2,040
Dec 2013140391.824.35$1,847
Nov 2013034688.853.74$1,293
Oct 2013128497.423.78$1,171
Sep 20130293104.113.72$1,089
Aug 20131307104.253.52$1,186
Jul 20132336102.523.72$1,454
Jun 2013034394.403.93$1,349
May 2013032094.834.15$1,328
Apr 2013138393.964.28$1,734
Mar 2013140393.623.91$1,671
Feb 2013035091.233.42$1,197
Jan 2013137491.603.42$1,371
Dec 2012037886.773.42$1,293
Nov 2012135686.953.62$1,377
Oct 2012039389.383.40$1,336
Sep 2012135694.672.92$1,134
Aug 2012132692.662.91$1,041
Jul 2012026785.133.02$807
Jun 2012127579.822.52$773
May 2012033091.612.49$821
Apr 20121236101.652.00$573
Mar 20120368105.052.22$818
Feb 20120360101.102.57$925
Jan 2012024098.092.73$656
Dec 201113596.873.24$210
Nov 2011126595.723.31$973
Oct 2011035284.983.65$1,284
Sep 2011137983.623.99$1,594
Aug 2011040083.404.15$1,660
Jul 2011138794.144.52$1,842
Jun 2011135292.904.64$1,726
May 2011040898.134.40$1,797
Apr 20111334105.964.33$1,553
Mar 2011038496.364.06$1,558
Feb 2011141585.644.18$1,820
Jan 2011243886.504.59$2,183
Dec 2010045385.734.35$1,970
Nov 2010049580.843.80$1,879
Oct 2010152878.103.51$1,931
Sep 2010143672.633.98$1,808
Aug 2010051173.684.42$2,258
Jul 2010252972.554.74$2,651
Jun 2010052270.364.91$2,563
May 2010154671.124.24$2,384
Apr 2010155781.694.12$2,378
Mar 2010155278.394.39$2,501
Feb 2010050173.585.44$2,727
Jan 2010259374.365.96$3,685
Dec 2009061171.445.48$3,351
Nov 2009236574.593.75$1,518
Oct 2009064672.544.11$2,655
Sep 2009164465.543.06$2,039
Aug 2009069267.423.22$2,227
Jul 2009377361.133.46$2,861
Jun 2009181366.163.90$3,233
May 2009277654.743.93$3,156
Apr 2009185846.773.59$3,125
Mar 200931,04542.144.06$4,368
Feb 2009393932.814.63$4,449
Jan 200911,15835.865.37$6,255
Dec 200841,18637.105.98$7,237
Nov 200831,17155.496.86$8,200
Oct 200821,31175.246.92$9,225
Sep 200821,298101.767.88$10,428
Aug 200821,565114.228.48$13,504
Jul 200821,725131.0811.39$19,909
Jun 200831,931131.3313.03$25,560
May 200842,234123.1711.57$26,350
Apr 200893,996110.3110.45$42,770
Mar 200811,782101.909.66$17,323
Feb 2008169992.538.77$6,223
Jan 2008177290.388.21$6,425
Dec 2007180388.337.30$5,952
Nov 2007275991.677.29$5,718
Oct 2007181882.856.92$5,745
Sep 2007178975.846.24$5,002
Aug 2007284069.066.39$5,504
Jul 2007285070.906.39$5,572
Jun 2007083262.007.55$6,280
May 2007188558.747.85$7,003
Apr 2007187259.617.81$6,866
Mar 2007195456.927.30$7,023
Feb 2007091155.108.22$7,485
Jan 200701,01550.306.73$6,828
Dec 200601,06256.656.92$7,347
Nov 200611,03554.207.62$7,938
Oct 200601,12154.906.01$6,741
Sep 2006084260.085.04$4,241
Aug 2006072068.717.34$5,285
Jul 2006071069.376.34$4,503
Jun 2006169366.286.38$4,490
May 2006075666.016.42$4,857
Apr 2006073364.397.36$5,395
Mar 2006082756.707.08$5,858
Feb 2006172957.597.75$5,708
Jan 2006086760.598.93$7,745
Dec 2005086254.9413.42$11,564
Nov 2005191754.6910.59$9,764
Oct 200501,15658.3413.80$15,948
Sep 2005049661.4512.08$5,991
Aug 2005064061.519.80$6,270
Jul 2005186455.697.84$6,833
Jun 2005099552.337.38$7,344
May 200501,02645.226.65$6,824
Apr 2005196649.207.36$7,159
Mar 2005097650.377.15$6,983
Feb 2005195545.226.31$6,073
Jan 200511,12343.166.32$7,143
Dec 200411,11239.866.75$7,547
Nov 200411,15145.286.33$7,332
Oct 200401,30949.706.52$8,528
Sep 200411,20743.245.28$6,421
Aug 200411,26642.375.55$7,070
Jul 200411,40438.286.08$8,580
Jun 200401,26536.106.43$8,138
May 200411,45037.486.49$9,455
Apr 200401,35534.475.86$7,938
Mar 200401,44734.365.53$8,002
Feb 200401,34332.455.51$7,399
Jan 200411,54332.036.30$9,752
Dec 200311,55630.266.30$9,836
Nov 200301,51728.804.60$6,971
Oct 200301,63028.174.76$7,758
Sep 2003197526.314.75$4,657
Aug 200301,16629.765.13$5,981
Jul 200301,65629.415.17$8,563
Jun 200321,58428.565.98$9,534
May 200301,70926.595.97$10,207
Apr 200321,59926.675.41$8,700
Mar 200332,02631.146.10$12,444
Feb 200321,78933.487.93$14,246
Jan 200301,99330.315.58$11,125
Dec 200231,96926.914.85$9,638
Nov 200202,05124.664.14$8,485
Oct 200202,08726.464.23$8,826
Sep 200232,04227.443.64$7,505
Aug 200201,94225.963.16$6,145
Jul 200202,09124.583.06$6,402
Jun 200202,06223.733.34$6,883
May 200202,12224.663.58$7,605
Apr 200232,06423.653.51$7,320
Mar 200222,12222.003.10$6,628
Feb 200201,93218.222.38$4,590
Jan 200292,13217.172.38$5,219
Dec 200162,18816.932.36$5,275
Nov 200102,30018.072.41$5,533
Oct 200102,18919.782.53$5,536
Sep 200101,92624.262.25$4,336
Aug 200101,92924.873.05$5,890
Jul 200131,66123.933.20$5,382
Jun 200101,74224.563.82$6,662
May 200101,88325.524.31$8,111
Apr 200101,98724.685.34$10,601
Mar 200102,10024.545.38$11,291
Feb 200141,89827.755.77$11,057
Jan 200102,17527.478.40$18,267
Dec 200002,17026.889.12$19,796
Nov 200052,19732.215.66$12,592
Oct 200002,46831.235.15$12,699
Sep 200002,00331.875.19$10,389
Aug 200032,06729.644.54$9,475
Jul 200002,56528.534.09$10,490
Jun 200032,40029.304.40$10,641
May 200032,46027.263.68$9,134
Apr 200052,26924.513.12$7,193
Mar 2000142,16028.422.86$6,575
Feb 200002,29327.622.73$6,252
Jan 200002,40425.272.48$5,963
Dec 199952,93624.282.42$7,237
Nov 199902,91023.192.43$7,083
Oct 199903,16820.982.80$8,882
Sep 199903,06121.752.62$8,016
Aug 199913,10719.262.88$8,954
Jul 199903,20017.892.37$7,592
Jun 199903,12015.942.36$7,370
May 199903,10215.792.32$7,200
Apr 199902,97115.102.21$6,560
Mar 199902,69212.471.84$4,949
Feb 199902,7779.981.82$5,048
Jan 199902,81510.381.90$5,348
Dec 199802,2219.201.77$3,939
Nov 199801,42310.892.19$3,110
Oct 199802,64712.421.97$5,213
Sep 199802,54812.592.08$5,307
Aug 199802,58611.301.91$4,932
Jul 199803,00911.742.24$6,732
Jun 199803,28611.242.24$7,352
May 199803,43812.622.21$7,585
Apr 199803,36413.042.51$8,428
Mar 199803,56912.802.31$8,242
Feb 199803,39913.952.30$7,815
Jan 199804,21614.702.15$9,085
Dec 199704,14416.322.41$9,992
Nov 199703,81418.193.09$11,779
Oct 199704,78019.253.15$15,056
Sep 199705,11117.742.95$15,102
Aug 199705,57617.862.55$14,245
Jul 199705,90617.582.25$13,270
Jun 199707,26017.242.26$16,387
May 199701,06918.972.31$2,468
Apr 199701,24317.882.08$2,589
Mar 199701,26418.951.94$2,451
Feb 199701,07820.492.21$2,378
Jan 199701,34523.483.54$4,761
Dec 199601,35723.32$0
Nov 199601,09921.97$0
Oct 199601,29423.31$0
Sep 199601,04922.22$0
Aug 199601,13820.26$0
Jul 199601,14519.55$0
Jun 1996089018.73$0
May 1996057719.43$0
Apr 1996087521.51$0
Mar 199601,58319.38$0
Feb 199601,48116.98$0
Jan 1996011517.07$0
Dec 199502,19617.19$0
Nov 199502,07616.00$0
Oct 199502,08315.43$0
Sep 199502,46016.18$0
Aug 199502,04015.92$0
Jul 199501,47915.24$0
Jun 199501,39516.41$0
May 199501,34517.56$0
Apr 1995201,57017.73$355
Mar 199501,61816.44$0
Feb 199501,41516.58$0
Jan 1995062915.92$0
Dec 199401,03415.03$0
Nov 199401,53615.90$0
Oct 1994095315.58$0
Sep 199401,12515.29$0
Aug 199401,27516.13$0
Jul 1994072717.56$0
Jun 199401,30217.09$0
May 1994088815.88$0
Apr 1994070314.14$0
Mar 199411,40712.46$12
Feb 1994087012.50$0
Jan 199401,17012.66$0
Dec 1993069912.33$0
Nov 199301,21714.49$0
Oct 199301,11615.85$0
Sep 1993091315.03$0
Aug 199301,28615.66$0
Jul 199301,51215.46$0
Jun 199301,50416.79$0
May 199301,79217.68$0
Apr 199301,84918.05$0
Mar 199301,90618.14$0
Feb 199301,92617.90$0
Jan 199301,42116.93$0

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
Condensate             0 bbl  × $106.41 =         $0
Gas                  269 Mcf  × $  3.05 =       $819

────────────────────────────────────────────────────
Month total                                     $819

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. 7C/G/139180 is the state's own key, not one this site invented.