MAYFIELD 40

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

Gas lease lease 170517District 7CField 81267691Hydrogen sulphide field2 tax incentive programmesCondensateGasSaveExport
Value, all time
$1.8 M
Jul 1998 – May 2026
Value, last 12 filed months
$10 k
at the published price for each month
Months reported
335
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 1,237 leases and 1,237 wells, and the rule below applies to all of them.

Discovered
1974-03-01
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 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: REQUEST (LOUIS DREYFUS NATURAL GAS APPLICIANT)

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 Gas111999-02-03140081
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
CondensateDisposition379 bbl$16,578
GasProduction376,952 Mcf$1,781,902
Total$1,798,480

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 30.5711, -100.8002. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.57113, -100.80022 · 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
8,450 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 8,450 ft.

Completions filed
Jul 1998
1 of 1 wells

1 well

42-4353480358,450 ftJul 1998

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 (335)

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

335 months

May 20260143106.413.05$436
Apr 2026015098.932.87$430
Mar 2026015089.753.15$472
Feb 2026013763.503.75$514
Jan 2026014759.138.00$1,176
Dec 2025014056.664.41$618
Nov 2025017458.593.93$683
Oct 2025015559.383.30$512
Sep 2025016462.743.08$505
Aug 2025023463.933.01$705
Jul 2025013266.743.32$438
Jun 202501,09466.483.13$3,423
May 2025016960.553.23$546
Apr 2025016462.363.54$581
Mar 202501,71467.704.27$7,316
Feb 202501,27070.884.34$5,513
Jan 202501,47474.324.28$6,307
Dec 202401,18768.993.12$3,705
Nov 202411,58169.052.20$3,545
Oct 2024062071.372.28$1,414
Sep 2024017169.612.36$404
Aug 2024016975.632.06$349
Jul 2024017579.932.15$376
Jun 2024017478.082.63$458
May 2024017578.812.20$385
Apr 2024016484.451.66$272
Mar 2024016780.301.55$258
Feb 2024016176.091.78$287
Jan 2024016573.023.30$544
Dec 2023016271.262.61$423
Nov 2023015877.892.81$444
Oct 2023017285.443.09$531
Sep 2023017689.042.74$481
Aug 2023018480.522.67$492
Jul 2023018574.852.64$489
Jun 2023018268.962.26$411
May 2023018670.622.23$414
Apr 2023018478.122.24$412
Mar 2023019072.852.39$455
Feb 2023017175.112.47$422
Jan 2023019176.533.39$647
Dec 2022018976.415.73$1,083
Nov 2022018885.005.65$1,061
Oct 2022019487.185.86$1,138
Sep 2022018784.888.16$1,527
Aug 2022019894.529.13$1,807
Jul 20220198101.587.54$1,493
Jun 20220190115.097.98$1,516
May 20221197109.378.43$1,771
Apr 20220191104.226.84$1,306
Mar 20220199108.885.08$1,010
Feb 2022018391.054.86$889
Jan 2022119681.844.54$971
Dec 2021020371.323.90$792
Nov 2021019577.435.24$1,021
Oct 2021220579.795.71$1,331
Sep 2021021069.865.35$1,124
Aug 2021021366.024.22$899
Jul 2021021570.783.98$856
Jun 2021023769.493.38$801
May 2021220163.483.02$734
Apr 2021021160.362.76$582
Mar 2021023361.302.72$633
Feb 2021022657.805.55$1,254
Jan 2021022350.412.81$627
Dec 2020022544.642.68$602
Nov 2020022938.772.71$620
Oct 2020026236.972.48$649
Sep 2020023637.091.99$470
Aug 2020026939.982.39$642
Jul 2020027138.371.83$495
Jun 2020026434.901.69$446
May 2020027716.921.81$503
Apr 2020027214.751.80$491
Mar 2020026430.341.86$490
Feb 2020025149.881.98$497
Jan 2020027657.252.09$578
Dec 2019027059.012.30$622
Nov 2019026455.302.75$726
Oct 2019027153.472.42$655
Sep 2019025755.052.66$683
Aug 2019027553.112.30$634
Jul 2019028856.272.46$709
Jun 2019125252.782.49$681
May 2019025858.482.74$707
Apr 2019024562.632.75$674
Mar 2019014356.803.06$438
Feb 2019118250.852.79$559
Jan 2019021646.033.23$697
Dec 2018518246.594.19$995
Nov 2018016352.934.24$691
Oct 2018020261.443.40$686
Sep 2018022859.543.11$709
Aug 2018023359.403.07$715
Jul 2018020265.142.93$592
Jun 2018024560.183.08$754
May 2018014765.382.90$426
Apr 2018022663.842.90$656
Mar 2018019661.222.79$546
Feb 2018023561.782.77$650
Jan 2018024662.874.01$986
Dec 2017022257.272.92$649
Nov 2017021555.423.12$670
Oct 2017020449.292.98$609
Sep 2017016947.523.09$522
Aug 2017023345.373.00$700
Jul 2017026243.873.09$809
Jun 2017025242.493.09$778
May 2017025145.373.26$819
Apr 2017026247.933.21$841
Mar 2017023246.772.98$692
Feb 2017122650.452.95$718
Jan 2017024749.413.42$844
Dec 2016024348.763.72$905
Nov 2016123242.492.64$656
Oct 2016022646.193.09$698
Sep 2016127141.553.10$882
Aug 2016035441.442.92$1,035
Jul 2016136741.622.92$1,115
Jun 2016035945.352.69$964
May 2016136842.521.99$775
Apr 2016234536.561.99$760
Mar 2016135333.011.79$666
Feb 2016029226.472.06$603
Jan 2016132227.352.36$789
Dec 2015033032.362.00$660
Nov 2015039738.792.17$860
Oct 2015139843.552.43$1,009
Sep 2015035042.992.76$965
Aug 2015054240.162.87$1,557
Jul 2015013248.152.95$389
Jun 2015033856.152.88$974
May 2015135855.212.96$1,113
Apr 2015135349.822.71$1,005
Mar 2015040442.892.93$1,186
Feb 2015141744.662.98$1,286
Jan 2015342243.433.10$1,439
Dec 2014140454.693.59$1,506
Nov 2014043470.464.25$1,845
Oct 2014144678.303.90$1,818
Sep 2014050886.164.05$2,055
Aug 2014034789.394.04$1,400
Jul 2014139396.564.18$1,739
Jun 2014040798.164.74$1,928
May 2014145694.734.73$2,250
Apr 2014060495.944.81$2,905
Mar 2014151595.895.06$2,700
Feb 2014059997.406.19$3,709
Jan 2014170690.404.86$3,522
Dec 2013272591.824.35$3,341
Nov 2013067788.853.74$2,531
Oct 2013159497.423.78$2,342
Sep 20130619104.113.72$2,301
Aug 20132658104.253.52$2,526
Jul 20133665102.523.72$2,780
Jun 2013062894.403.93$2,470
May 2013063294.834.15$2,622
Apr 2013268293.964.28$3,109
Mar 2013273993.623.91$3,079
Feb 2013066791.233.42$2,281
Jan 2013274891.603.42$2,741
Dec 2012073186.773.42$2,500
Nov 2012269686.953.62$2,697
Oct 2012078589.383.40$2,669
Sep 2012374094.672.92$2,444
Aug 2012174892.662.91$2,268
Jul 2012074085.133.02$2,235
Jun 2012173379.822.52$1,926
May 2012077891.612.49$1,936
Apr 20121751101.652.00$1,601
Mar 20121796105.052.22$1,874
Feb 20120770101.102.57$1,979
Jan 2012084198.092.73$2,299
Dec 2011181596.873.24$2,737
Nov 2011176095.723.31$2,612
Oct 2011078384.983.65$2,857
Sep 2011179283.623.99$3,240
Aug 2011070983.404.15$2,942
Jul 2011179194.144.52$3,667
Jun 2011176592.904.64$3,642
May 2011082398.134.40$3,625
Apr 20111769105.964.33$3,438
Mar 2011085996.364.06$3,485
Feb 2011184385.644.18$3,609
Jan 2011392286.504.59$4,490
Dec 2010094085.734.35$4,087
Nov 2010083080.843.80$3,150
Oct 2010193078.103.51$3,341
Sep 2010291672.633.98$3,790
Aug 2010097073.684.42$4,287
Jul 2010497672.554.74$4,913
Jun 2010094670.364.91$4,645
May 2010196671.124.24$4,162
Apr 2010296481.694.12$4,138
Mar 2010295878.394.39$4,361
Feb 2010090473.585.44$4,920
Jan 2010499674.365.96$6,238
Dec 200901,00871.445.48$5,528
Nov 200941,05074.593.75$4,237
Oct 200901,14772.544.11$4,714
Sep 200911,12665.543.06$3,516
Aug 200901,15167.423.22$3,704
Jul 200941,18161.133.46$4,336
Jun 200911,13566.163.90$4,487
May 200921,39254.743.93$5,574
Apr 2009199246.773.59$3,606
Mar 200941,40342.144.06$5,863
Feb 200941,13032.814.63$5,367
Jan 200911,30035.865.37$7,018
Dec 200831,28937.105.98$7,816
Nov 200831,27255.496.86$8,893
Oct 200811,33375.246.92$9,302
Sep 200811,255101.767.88$9,988
Aug 200811,410114.228.48$12,075
Jul 200811,436131.0811.39$16,486
Jun 200811,170131.3313.03$15,380
May 200811,048123.1711.57$12,253
Apr 200841,042110.3110.45$11,335
Mar 200811,052101.909.66$10,269
Feb 200811,01092.538.77$8,951
Jan 200821,09990.388.21$9,199
Dec 200711,13188.337.30$8,347
Nov 200731,19091.677.29$8,952
Oct 200721,34082.856.92$9,441
Sep 200711,44575.846.24$9,099
Aug 2007395669.066.39$6,314
Jul 200731,52670.906.39$9,961
Jun 200701,49562.007.55$11,285
May 200731,32858.747.85$10,596
Apr 200721,50859.617.81$11,889
Mar 200711,53056.927.30$11,229
Feb 200711,44955.108.22$11,960
Jan 200721,62650.306.73$11,038
Dec 200601,66056.656.92$11,485
Nov 200631,59654.207.62$12,320
Oct 200601,66054.906.01$9,983
Sep 200602,04660.085.04$10,306
Aug 200602,48868.717.34$18,262
Jul 200602,70769.376.34$17,170
Jun 200632,62666.286.38$16,963
May 200602,83666.016.42$18,221
Apr 200602,67064.397.36$19,652
Mar 200602,59356.707.08$18,366
Feb 200621,64457.597.75$12,858
Jan 200602,03860.598.93$18,206
Dec 200501,93954.9413.42$26,012
Nov 200521,91954.6910.59$20,429
Oct 200501,90158.3413.80$26,226
Sep 200511,84561.4512.08$22,347
Aug 200502,24061.519.80$21,945
Jul 200511,70555.697.84$13,429
Jun 200501,69652.337.38$12,518
May 200501,73245.226.65$11,520
Apr 200531,79649.207.36$13,367
Mar 200501,72750.377.15$12,356
Feb 200532,00545.226.31$12,791
Jan 200532,30343.166.32$14,690
Dec 200412,26039.866.75$15,297
Nov 200421,98745.286.33$12,669
Oct 2004091749.706.52$5,974
Sep 200411,18343.245.28$6,294
Aug 200401,22942.375.55$6,822
Jul 200411,21038.286.08$7,400
Jun 200401,28736.106.43$8,279
May 200411,34637.486.49$8,779
Apr 200401,39534.475.86$8,173
Mar 200401,44034.365.53$7,963
Feb 200401,22732.455.51$6,760
Jan 200411,27732.036.30$8,077
Dec 200311,35030.266.30$8,537
Nov 200301,57928.804.60$7,256
Oct 200301,72728.174.76$8,220
Sep 200321,54926.314.75$7,409
Aug 200301,94229.765.13$9,962
Jul 200302,12229.415.17$10,973
Jun 200332,62328.565.98$15,779
May 200302,58426.595.97$15,433
Apr 200332,43026.675.41$13,220
Mar 200332,84831.146.10$17,455
Feb 200332,03533.487.93$16,230
Jan 200302,28530.315.58$12,755
Dec 200232,39726.914.85$11,715
Nov 200202,57524.664.14$10,653
Oct 200202,54726.464.23$10,772
Sep 200232,55427.443.64$9,367
Aug 200202,44225.963.16$7,727
Jul 200202,65424.583.06$8,126
Jun 200202,65623.733.34$8,866
May 200202,70424.663.58$9,691
Apr 200242,81023.653.51$9,964
Mar 200232,47022.003.10$7,730
Feb 200202,40418.222.38$5,711
Jan 2002112,71217.172.38$6,632
Dec 200182,74916.932.36$6,635
Nov 200102,42818.072.41$5,841
Oct 200102,93419.782.53$7,420
Sep 200102,34924.262.25$5,288
Aug 200102,44024.873.05$7,450
Jul 200172,12423.933.20$6,958
Jun 200102,34624.563.82$8,971
May 200102,35625.524.31$10,148
Apr 200102,47824.685.34$13,221
Mar 200102,69324.545.38$14,479
Feb 200162,51027.755.77$14,642
Jan 200102,88127.478.40$24,197
Dec 200002,90926.889.12$26,537
Nov 200062,94732.215.66$16,867
Oct 200003,14231.235.15$16,167
Sep 200003,19331.875.19$16,560
Aug 200053,23629.644.54$14,842
Jul 200003,65928.534.09$14,964
Jun 200073,35229.304.40$14,945
May 200053,82927.263.68$14,226
Apr 200094,08924.513.12$12,962
Mar 2000284,29028.422.86$13,064
Feb 200004,49127.622.73$12,245
Jan 200005,40725.272.48$13,412
Dec 199986,56024.282.42$16,094
Nov 199904,64023.192.43$11,294
Oct 199904,42320.982.80$12,401
Sep 199904,98321.752.62$13,050
Aug 1999135,78419.262.88$16,883
Jul 199907,12417.892.37$16,901
Jun 199904,80715.942.36$11,355
May 19991285015.792.32$2,162
Apr 19991493115.102.21$2,267
Mar 1999095412.471.84$1,754
Feb 199901,2049.981.82$2,189
Jan 1999141,33810.381.90$2,687
Dec 1998141,1589.201.77$2,182
Nov 199801,01910.892.19$2,227
Oct 199801,65012.421.97$3,249
Sep 199871,71212.592.08$3,654
Aug 199801,99111.301.91$3,798
Jul 199801,00611.742.24$2,251

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                  143 Mcf  × $  3.05 =       $436

────────────────────────────────────────────────────
Month total                                     $436

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/170517 is the state's own key, not one this site invented.