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 211729District 7CField 812673332 tax incentive programmesCondensateGasSaveExport
Value, all time
$1.8 M
Mar 2005 – May 2026
Value, last 12 filed months
$14 k
at the published price for each month
Months reported
255
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 Gas112007-06-25178688
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
CondensateDisposition175 bbl$11,368
GasProduction289,636 Mcf$1,825,018
Total$1,836,386

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 30.5676, -100.8001. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.56759, -100.80008 · 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
8,400 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 8,400 ft.

Completions filed
Mar 2005
1 of 1 wells

1 well

42-43537050138,400 ftMar 2005

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 (255)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

255 months

May 20260331106.413.05$1,008
Apr 2026028898.932.87$826
Mar 2026031589.753.15$992
Feb 2026028063.503.75$1,050
Jan 2026030159.138.00$2,407
Dec 2025031456.664.41$1,386
Nov 2025030758.593.93$1,205
Oct 2025032159.383.30$1,061
Sep 2025031262.743.08$960
Aug 2025032863.933.01$989
Jul 2025032666.743.32$1,081
Jun 2025032266.483.13$1,007
May 2025033460.553.23$1,080
Apr 2025032962.363.54$1,166
Mar 2025032967.704.27$1,404
Feb 2025028970.884.34$1,255
Jan 2025031574.324.28$1,348
Dec 2024032668.993.12$1,018
Nov 2024032269.052.20$708
Oct 2024033471.372.28$762
Sep 2024032269.612.36$761
Aug 2024034075.632.06$702
Jul 2024033779.932.15$723
Jun 2024033178.082.63$872
May 2024033978.812.20$745
Apr 2024032884.451.66$544
Mar 2024033580.301.55$518
Feb 2024031776.091.78$565
Jan 2024034073.023.30$1,121
Dec 2023034671.262.61$903
Nov 2023232577.892.81$1,068
Oct 2023034085.443.09$1,050
Sep 2023033589.042.74$916
Aug 2023035180.522.67$938
Jul 2023035074.852.64$925
Jun 2023034368.962.26$775
May 2023035270.622.23$784
Apr 2023033778.122.24$754
Mar 2023035272.852.39$842
Feb 2023032275.112.47$794
Jan 2023034976.533.39$1,182
Dec 2022234276.415.73$2,112
Nov 2022134585.005.65$2,033
Oct 2022035887.185.86$2,099
Sep 2022035584.888.16$2,898
Aug 2022035894.529.13$3,268
Jul 20220373101.587.54$2,813
Jun 20220359115.097.98$2,864
May 20220368109.378.43$3,103
Apr 20221359104.226.84$2,559
Mar 20220368108.885.08$1,868
Feb 2022032791.054.86$1,589
Jan 2022036981.844.54$1,674
Dec 2021037171.323.90$1,447
Nov 2021036477.435.24$1,906
Oct 2021038279.795.71$2,183
Sep 2021037569.865.35$2,007
Aug 2021039566.024.22$1,667
Jul 2021040170.783.98$1,597
Jun 2021139669.493.38$1,408
May 2021039963.483.02$1,204
Apr 2021038760.362.76$1,068
Mar 2021146061.302.72$1,311
Feb 2021027357.805.55$1,515
Jan 2021033850.412.81$950
Dec 2020039544.642.68$1,057
Nov 2020037638.772.71$1,018
Oct 2020036436.972.48$902
Sep 2020030137.091.99$599
Aug 2020034839.982.39$830
Jul 2020136638.371.83$706
Jun 2020036834.901.69$622
May 2020038916.921.81$706
Apr 2020038914.751.80$702
Mar 2020038730.341.86$718
Feb 2020037349.881.98$739
Jan 2020040057.252.09$838
Dec 2019040359.012.30$929
Nov 2019039555.302.75$1,087
Oct 2019042753.472.42$1,033
Sep 2019045955.052.66$1,220
Aug 2019044153.112.30$1,016
Jul 2019044956.272.46$1,105
Jun 2019043452.782.49$1,081
May 2019043858.482.74$1,200
Apr 2019044962.632.75$1,235
Mar 2019045956.803.06$1,406
Feb 2019037050.852.79$1,033
Jan 2019046346.033.23$1,495
Dec 2018046846.594.19$1,959
Nov 2018045752.934.24$1,936
Oct 2018047861.443.40$1,624
Sep 2018146459.543.11$1,502
Aug 2018032859.403.07$1,006
Jul 2018036065.142.93$1,055
Jun 2018046360.183.08$1,425
May 2018050665.382.90$1,468
Apr 2018149963.842.90$1,511
Mar 2018053161.222.79$1,480
Feb 2018049261.782.77$1,361
Jan 2018455362.874.01$2,469
Dec 2017056357.272.92$1,645
Nov 2017055355.423.12$1,724
Oct 2017058649.292.98$1,748
Sep 2017057847.523.09$1,784
Aug 2017160245.373.00$1,854
Jul 2017060143.873.09$1,855
Jun 2017057142.493.09$1,763
May 2017059745.373.26$1,948
Apr 2017157947.933.21$1,907
Mar 2017059846.772.98$1,784
Feb 2017054250.452.95$1,600
Jan 2017057249.413.42$1,956
Dec 2016351448.763.72$2,060
Nov 2016042942.492.64$1,134
Oct 2016055546.193.09$1,715
Sep 2016062541.553.10$1,938
Aug 2016164741.442.92$1,933
Jul 2016065441.622.92$1,913
Jun 2016064345.352.69$1,727
May 2016061442.521.99$1,223
Apr 2016370436.561.99$1,511
Mar 2016069733.011.79$1,250
Feb 2016161226.472.06$1,289
Jan 2016063627.352.36$1,504
Dec 2015065032.362.00$1,301
Nov 2015065238.792.17$1,413
Oct 2015268443.552.43$1,747
Sep 2015062042.992.76$1,710
Aug 2015063840.162.87$1,833
Jul 2015167448.152.95$2,033
Jun 2015069256.152.88$1,995
May 2015071055.212.96$2,098
Apr 2015270249.822.71$2,000
Mar 2015071842.892.93$2,107
Feb 2015066444.662.98$1,976
Jan 2015374743.433.10$2,446
Dec 2014076754.693.59$2,755
Nov 2014374170.464.25$3,362
Oct 2014076678.303.90$2,988
Sep 2014074686.164.05$3,018
Aug 2014078089.394.04$3,147
Jul 2014280196.564.18$3,541
Jun 2014074698.164.74$3,534
May 2014073994.734.73$3,493
Apr 2014069395.944.81$3,333
Mar 2014275595.895.06$4,010
Feb 2014067897.406.19$4,198
Jan 2014273190.404.86$3,734
Dec 2013277591.824.35$3,558
Nov 2013075288.853.74$2,811
Oct 2013280397.423.78$3,230
Sep 20130756104.113.72$2,811
Aug 20130772104.253.52$2,719
Jul 20130769102.523.72$2,859
Jun 2013077494.403.93$3,044
May 2013080594.834.15$3,340
Apr 2013278493.964.28$3,545
Mar 2013082493.623.91$3,224
Feb 2013071391.233.42$2,438
Jan 2013274691.603.42$2,734
Dec 2012075386.773.42$2,575
Nov 2012070186.953.62$2,541
Oct 2012166589.383.40$2,350
Sep 2012063294.672.92$1,844
Aug 2012060392.662.91$1,754
Jul 2012063985.133.02$1,930
Jun 2012053279.822.52$1,340
May 2012067091.612.49$1,667
Apr 20120701101.652.00$1,400
Mar 20121721105.052.22$1,707
Feb 20122658101.102.57$1,893
Jan 2012075298.092.73$2,056
Dec 2011271096.873.24$2,494
Nov 2011267595.723.31$2,427
Oct 2011057684.983.65$2,102
Sep 2011052283.623.99$2,081
Aug 2011072383.404.15$3,000
Jul 2011070094.144.52$3,162
Jun 2011057092.904.64$2,645
May 2011169098.134.40$3,137
Apr 20110709105.964.33$3,072
Mar 2011072996.364.06$2,958
Feb 2011361185.644.18$2,811
Jan 2011081586.504.59$3,740
Dec 2010086485.734.35$3,756
Nov 2010085880.843.80$3,256
Oct 2010191878.103.51$3,299
Sep 2010099272.633.98$3,948
Aug 2010060173.684.42$2,656
Jul 2010186172.554.74$4,151
Jun 2010083970.364.91$4,120
May 2010089271.124.24$3,778
Apr 2010087481.694.12$3,603
Mar 2010192178.394.39$4,120
Feb 2010282873.585.44$4,653
Jan 2010198574.365.96$5,949
Dec 200911,03271.445.48$5,731
Nov 2009199874.593.75$3,819
Oct 200901,06072.544.11$4,357
Sep 200901,07265.543.06$3,285
Aug 200911,12867.423.22$3,698
Jul 200901,10761.133.46$3,835
Jun 200911,04566.163.90$4,136
May 200901,21654.743.93$4,774
Apr 200911,17446.773.59$4,258
Mar 200941,26042.144.06$5,283
Feb 200911,20732.814.63$5,625
Jan 200921,45135.865.37$7,865
Dec 200821,51637.105.98$9,136
Nov 200821,38155.496.86$9,585
Oct 200801,39175.246.92$9,628
Sep 200801,440101.767.88$11,343
Aug 200801,527114.228.48$12,954
Jul 200821,577131.0811.39$18,223
Jun 200801,509131.3313.03$19,666
May 200801,551123.1711.57$17,952
Apr 200821,693110.3110.45$17,921
Mar 200801,757101.909.66$16,980
Feb 200821,74292.538.77$15,463
Jan 200821,63290.388.21$13,573
Dec 200721,98588.337.30$14,671
Nov 200701,95391.677.29$14,241
Oct 200722,10482.856.92$14,730
Sep 200702,01575.846.24$12,582
Aug 200702,10969.066.39$13,472
Jul 200722,26070.906.39$14,579
Jun 200702,25162.007.55$16,992
May 200732,42058.747.85$19,164
Apr 200702,45559.617.81$19,162
Mar 200722,81456.927.30$20,662
Feb 200711,63155.108.22$13,455
Jan 200752,78950.306.73$19,013
Dec 200622,94056.656.92$20,454
Nov 200652,99154.207.62$23,055
Oct 200633,31554.906.01$20,100
Sep 200633,34460.085.04$17,025
Aug 200603,74668.717.34$27,495
Jul 200634,26969.376.34$27,285
Jun 200623,40166.286.38$21,844
May 2006340866.016.42$2,819
Apr 200624,08064.397.36$30,160
Mar 200664,14156.707.08$29,671
Feb 200663,82457.597.75$29,986
Jan 200654,51660.598.93$40,646
Dec 200555,03954.9413.42$67,875
Nov 200545,26554.6910.59$55,967
Oct 200505,83258.3413.80$80,457
Sep 200506,14561.4512.08$74,225
Aug 200507,22061.519.80$70,733
Jul 200507,60355.697.84$59,635
Jun 200509,05652.337.38$66,843
May 2005012,57545.226.65$83,638
Apr 20051714,97749.207.36$111,074
Mar 2005011,09050.377.15$79,348

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                  331 Mcf  × $  3.05 =     $1,008

────────────────────────────────────────────────────
Month total                                   $1,008

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/211729 is the state's own key, not one this site invented.