MASTEN

Operated by JOPLIN OIL CO., INC. (P-5 445469) in the LEVELLAND field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 65143District 8AField 53411001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$2.2 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 568 leases and 7,034 wells, and the rule below applies to all of them.

Discovered
1945-01-17
as the register files it
Field class
Oil
the register's own label
Between wells
880 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 21.25 acres.

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: ASSOCIATED GAS FIELD LEVELLAND (SAN ANDRES)

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
NGPA5none

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
OilDisposition71,304 bbl$2,149,296
Casinghead gasProduction43,996 Mcf$99,269
Total$2,248,565

20,140 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 (8)

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 33.4964, -102.9191. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

33.49614, -102.91909 · 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 8 wells
With a plug date
0.0%
0 of 8 wells
Median depth
5,087 ft
8 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.
8100.0%

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

Total depth in feet, 8 of 8 wells. Median 5,087 ft, with the middle half between 5,076 and 5,098 ft; the shallowest is 5,070 ft and the deepest 5,106 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 8 of 8 wells, Dec 1984 – Oct 1994. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Dec 1984 – Oct 1994
8 of 8 wells

8 wells

42-0793226975,076 ftOct 1994
42-0793224865,084 ftSep 1994
42-0793222155,090 ftDec 1987
42-0793229285,097 ftNov 1987
42-0793217345,070 ftNov 1985
42-0793211435,106 ftJul 1985
42-0793208425,100 ftMar 1985
42-0793205815,076 ftDec 1984

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 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 2019149058.482.74$8,714
Apr 20190062.632.75$0
Mar 2019163056.803.06$9,258
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 2018163059.403.07$9,682
Jul 20180065.142.93$0
Jun 2018161060.183.08$9,689
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017161057.272.92$9,220
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 2017147043.873.09$6,449
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 2017152047.933.21$7,285
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 2017155049.413.42$7,659
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 2016163046.193.09$7,529
Sep 20160041.553.10$0
Aug 2016153041.442.92$6,340
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 2016150042.521.99$6,378
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 2016154026.472.06$4,076
Jan 20160027.352.36$0
Dec 2015156032.362.00$5,048
Nov 20150038.792.17$0
Oct 2015146043.552.43$6,358
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 2015166048.152.95$7,993
Jun 20150056.152.88$0
May 2015164055.212.96$9,054
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 2015156044.662.98$6,967
Jan 20150043.433.10$0
Dec 2014165054.693.59$9,024
Nov 20140070.464.25$0
Oct 2014162078.303.90$12,685
Sep 20140086.164.05$0
Aug 2014151089.394.04$13,498
Jul 20140096.564.18$0
Jun 2014165098.164.74$16,196
May 20140094.734.73$0
Apr 2014163095.944.81$15,638
Mar 20140095.895.06$0
Feb 2014166097.406.19$16,168
Jan 20140090.404.86$0
Dec 2013164091.824.35$15,058
Nov 20130088.853.74$0
Oct 2013166097.423.78$16,172
Sep 201300104.113.72$0
Aug 20131690104.253.52$17,618
Jul 20131700102.523.72$17,428
Jun 20130094.403.93$0
May 20133094.834.15$284
Apr 2013168093.964.28$15,785
Mar 20130093.623.91$0
Feb 2013166091.233.42$15,144
Jan 2013166091.603.42$15,206
Dec 20120086.773.42$0
Nov 2012168086.953.62$14,608
Oct 20124089.383.40$358
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 2012168085.133.02$14,302
Jun 20120079.822.52$0
May 2012172091.612.49$15,757
Apr 201200101.652.00$0
Mar 20121630105.052.22$17,123
Feb 201200101.102.57$0
Jan 2012170098.092.73$16,675
Dec 2011162096.873.24$15,693
Nov 2011167095.723.31$15,985
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 2011170092.904.64$15,793
May 2011177098.134.40$17,369
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 2011171085.644.18$14,644
Jan 20110086.504.59$0
Dec 2010171085.734.35$14,660
Nov 2010173080.843.80$13,985
Oct 20100078.103.51$0
Sep 2010166072.633.98$12,057
Aug 20100073.684.42$0
Jul 2010176072.554.74$12,769
Jun 20100070.364.91$0
May 2010164071.124.24$11,664
Apr 2010169081.694.12$13,806
Mar 20100078.394.39$0
Feb 2010169073.585.44$12,435
Jan 20100074.365.96$0
Dec 2009167071.445.48$11,930
Nov 20090074.593.75$0
Oct 2009171072.544.11$12,404
Sep 2009172065.543.06$11,273
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009171066.163.90$11,313
May 2009171054.743.93$9,361
Apr 20090046.773.59$0
Mar 2009172042.144.06$7,248
Feb 20092032.814.63$66
Jan 2009171035.865.37$6,132
Dec 20080037.105.98$0
Nov 2008171055.496.86$9,489
Oct 20082075.246.92$150
Sep 20081710101.767.88$17,401
Aug 200800114.228.48$0
Jul 20081710131.0811.39$22,415
Jun 200800131.3313.03$0
May 20081710123.1711.57$21,062
Apr 20081670110.3110.45$18,422
Mar 200800101.909.66$0
Feb 2008171092.538.77$15,823
Jan 20080090.388.21$0
Dec 2007170088.337.30$15,016
Nov 2007168091.677.29$15,401
Oct 20070082.856.92$0
Sep 2007190075.846.24$14,410
Aug 2007179069.066.39$12,362
Jul 20070070.906.39$0
Jun 20071832362.007.55$11,520
May 200707958.747.85$620
Apr 200719310259.617.81$12,301
Mar 2007010256.927.30$745
Feb 20071759755.108.22$10,439
Jan 200718810750.306.73$10,176
Dec 2006011356.656.92$782
Nov 200616811054.207.62$9,944
Oct 200616910954.906.01$9,934
Sep 200619012060.085.04$12,020
Aug 200619768.717.34$781
Jul 200618811369.376.34$13,758
Jun 200618812366.286.38$13,246
May 200619312566.016.42$13,543
Apr 2006012164.397.36$891
Mar 200618812956.707.08$11,573
Feb 200619611657.597.75$12,187
Jan 200619913760.598.93$13,281
Dec 2005013254.9413.42$1,771
Nov 200519613354.6910.59$12,128
Oct 200519015558.3413.80$13,223
Sep 200519715061.4512.08$13,918
Aug 200518315761.519.80$12,794
Jul 200501655.697.84$126
Jun 200518515552.337.38$10,825
May 200518616345.226.65$9,495
Apr 200518311949.207.36$9,880
Mar 200518410750.377.15$10,034
Feb 20051705845.226.31$8,053
Jan 20051748743.166.32$8,060
Dec 20041699239.866.75$7,357
Nov 200408745.286.33$551
Oct 20043469949.706.52$17,841
Sep 200408943.245.28$470
Aug 200434311742.375.55$15,182
Jul 200417112038.286.08$7,276
Jun 200417311736.106.43$6,998
May 200417012237.486.49$7,164
Apr 200417212134.475.86$6,638
Mar 200417011634.365.53$6,483
Feb 200416710532.455.51$5,998
Jan 200434113032.036.30$11,741
Dec 200317012430.266.30$5,926
Nov 200317013928.804.60$5,535
Oct 200316917128.174.76$5,575
Sep 200317416726.314.75$5,371
Aug 200334715529.765.13$11,122
Jul 200317215829.415.17$5,876
Jun 200316815528.565.98$5,725
May 200317416226.595.97$5,594
Apr 200334214926.675.41$9,927
Mar 200317317831.146.10$6,472
Feb 200317415833.487.93$7,078
Jan 200334117830.315.58$11,329
Dec 200217216926.914.85$5,449
Nov 200234818524.664.14$9,347
Oct 200217420026.464.23$5,450
Sep 200217420427.443.64$5,516
Aug 200233922725.963.16$9,519
Jul 200217422724.583.06$4,972
Jun 200233623523.733.34$8,758
May 200217225524.663.58$5,155
Apr 200217719123.653.51$4,857
Mar 200233220822.003.10$7,949
Feb 200217118718.222.38$3,560
Jan 200234021917.172.38$6,358
Dec 200133818416.932.36$6,157
Nov 200116522618.072.41$3,525
Oct 200134226919.782.53$7,445
Sep 200133912124.262.25$8,497
Aug 200134424924.873.05$9,316
Jul 200116820023.933.20$4,660
Jun 200133822624.563.82$9,166
May 200133919125.524.31$9,474
Apr 200117220024.685.34$5,312
Mar 200117022324.545.38$5,371
Feb 200133920727.755.77$10,601
Jan 200117723527.478.40$6,836
Dec 200035225626.889.12$11,797
Nov 200034217032.215.66$11,978
Oct 200016820331.235.15$6,291
Sep 200033321131.875.19$11,707
Aug 200033322329.644.54$10,883
Jul 200050821528.534.09$15,373
Jun 200016021829.304.40$5,647
May 200032221627.263.68$9,573
Apr 200034229924.513.12$9,314
Mar 200033621928.422.86$10,175
Feb 200032617927.622.73$9,492
Jan 200033621425.272.48$9,022
Dec 199950823924.282.42$12,914
Nov 199934124923.192.43$8,514
Oct 199936526020.982.80$8,387
Sep 199934727021.752.62$8,254
Aug 199935122819.262.88$7,416
Jul 199935323117.892.37$6,863
Jun 199936923615.942.36$6,439
May 199935126415.792.32$6,155
Apr 199954723515.102.21$8,779
Mar 199936326112.471.84$5,006
Feb 19993642149.981.82$4,022
Jan 199934325510.381.90$4,045
Dec 19983622359.201.77$3,747
Nov 199872126110.892.19$8,422
Oct 199837927612.421.97$5,251
Sep 199836027512.592.08$5,105
Aug 199817726511.301.91$2,506
Jul 199818028011.742.24$2,740
Jun 199855631411.242.24$6,952
May 199834828112.622.21$5,012
Apr 199835122513.042.51$5,141
Mar 199837125112.802.31$5,328
Feb 199836122813.952.30$5,560
Jan 199834726014.702.15$5,661
Dec 199753627216.322.41$9,403
Nov 199736627818.193.09$7,516
Oct 199736027819.253.15$7,806
Sep 199752831817.742.95$10,306
Aug 199734627617.862.55$6,885
Jul 199751929617.582.25$9,789
Jun 199734429417.242.26$6,594
May 199751630118.972.31$10,483
Apr 199736532017.882.08$7,193
Mar 199748931118.951.94$9,870
Feb 199734228020.492.21$7,625
Jan 199749831423.483.54$12,805
Dec 199650832123.32$11,847
Nov 199632732521.97$7,184
Oct 199651836823.31$12,075
Sep 199649231722.22$10,932
Aug 199633138520.26$6,706
Jul 199668443919.55$13,372
Jun 199634145718.73$6,387
May 199654142419.43$10,512
Apr 199633938721.51$7,292
Mar 199652638919.38$10,194
Feb 199655538516.98$9,424
Jan 199637026617.07$6,316
Dec 199534831217.19$5,982
Nov 199553536716.00$8,560
Oct 199554246715.43$8,363
Sep 199535541316.18$5,744
Aug 199554438315.92$8,660
Jul 199551839215.24$7,894
Jun 199553538516.41$8,779
May 199553637117.56$9,412
Apr 199537652617.73$6,666
Mar 199554878516.44$9,009
Feb 199552445916.58$8,688
Jan 199553346215.92$8,485
Dec 199453348115.03$8,011
Nov 199470249515.90$11,162
Oct 199451752115.58$8,055
Sep 199453128715.29$8,119
Aug 199470352716.13$11,339
Jul 199453643617.56$9,412
Jun 1994530117.09$9,058
May 1994695115.88$11,037
Apr 1994701114.14$9,912
Mar 199453124812.46$6,616
Feb 199452732512.50$6,588
Jan 199469351112.66$8,773
Dec 199371350012.33$8,791
Nov 199370749914.49$10,244
Oct 199369649115.85$11,032
Sep 199370247215.03$10,551
Aug 199372946915.66$11,416
Jul 199373937115.46$11,425
Jun 199370766216.79$11,871
May 199350456617.68$8,911
Apr 199389374418.05$16,119
Mar 199387250718.14$15,818
Feb 199355163717.90$9,863
Jan 199387060316.93$14,729

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 2019 — as filed, then multipliedworked
Oil                  149 bbl  × $ 58.48 =     $8,714
Casinghead gas         0 Mcf  × $  2.74 =         $0

────────────────────────────────────────────────────
Month total                                   $8,714

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/65143 is the state's own key, not one this site invented.