MASTEN, F. O "H"

Operated by EXTEX OPERATING COMPANY (P-5 257062) 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 3750District 8AField 53411001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$13.6 M
Jan 1993 – May 2026
Value, last 12 filed months
$56 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 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)

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
OilDisposition383,076 bbl$12,807,202
Casinghead gasProduction355,339 Mcf$754,476
Total$13,561,679

166,241 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 (22)

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 33.5164, -102.8875. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.1 miles.

33.51870, -102.88862 · 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
63.6%
14 of 22 wells
With a plug date
59.1%
13 of 22 wells
Median depth
5,039 ft
21 wells filed one
Completion to plug
15.1 years
median over 10 wells

What the state filed about each well

On the RRC proration schedule
1463.6%
A plug date is filed
1359.1%
BothOn the schedule and plugged. Neither fact cancels the other.
1359.1%
NeitherNo plug date, and not on the schedule.
836.4%

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, 21 of 22 wells. Median 5,039 ft, with the middle half between 5,012 and 5,050 ft; the shallowest is 4,979 ft and the deepest 5,150 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, 18 of 22 wells, Jul 1983 – Nov 2013. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jul 1983 – Nov 2013
18 of 22 wells; 4 filed none
Plug dates filed
May 1994 – Oct 2018
13 of 22 wells; 9 filed none

Last completion to plug: a median of 15.1 years across the 10 wells that filed both dates, with the middle half between 13.7 years and 18.6 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

22 wells

42-0790193135,012 ftNov 2000Yes
42-079019334Yes
42-0790193665,062 ftAug 1999Yes
42-0791017185,039 ftDec 2000Yes
42-07932706155,020 ftNov 2013
42-0790214075,012 ftJul 2004
42-079329918X4,998 ftDec 2000Jul 2003Yes
42-079328996 X5,022 ftJan 1997Oct 2012Yes
42-079327871 X4,994 ftJun 1994
42-07932708165,042 ftNov 1993Mar 2008Yes
42-07932719175,048 ftNov 1993Oct 2007Yes
42-07932718125,022 ftOct 1993
42-07932705135,030 ftOct 1993
42-07932720195,064 ftOct 1993Sep 2012Yes
42-07932693185,042 ftJul 1993
42-07932692144,998 ftMay 1993Dec 2006Yes
42-079326714 X5,050 ftApr 1993
42-0790034015,068 ftOct 1991May 1994Yes
42-0790192924,979 ftAug 1984Sep 2017Yes
42-07931805105,050 ftNov 1983Oct 2018Yes
42-07931804115,150 ftNov 1983May 2001Yes
42-0793169195,050 ftJul 1983

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 2026610106.413.05$6,491
Apr 2026106098.932.87$10,487
Mar 20260089.753.15$0
Feb 202651063.503.75$3,239
Jan 20260159.138.00$8
Dec 2025582856.664.41$3,410
Nov 20251262858.593.93$7,492
Oct 202503359.383.30$109
Sep 20251092262.743.08$6,906
Aug 2025522763.933.01$3,406
Jul 20251052066.743.32$7,074
Jun 20251171066.483.13$7,809
May 202562060.553.23$3,754
Apr 202547062.363.54$2,931
Mar 2025123067.704.27$8,327
Feb 202560070.884.34$4,253
Jan 2025118074.324.28$8,770
Dec 202463068.993.12$4,346
Nov 202456369.052.20$3,873
Oct 20241161971.372.28$8,322
Sep 2024662469.612.36$4,651
Aug 20241171775.632.06$8,884
Jul 2024611679.932.15$4,910
Jun 2024621178.082.63$4,870
May 2024632078.812.20$5,009
Apr 20241161884.451.66$9,826
Mar 20241231380.301.55$9,897
Feb 2024653176.091.78$5,001
Jan 20241853273.023.30$13,614
Dec 2023642471.262.61$4,623
Nov 20231202977.892.81$9,428
Oct 202359685.443.09$5,059
Sep 20231243689.042.74$11,139
Aug 20231272880.522.67$10,301
Jul 20231072374.852.64$8,070
Jun 20231034268.962.26$7,198
May 20231184170.622.23$8,424
Apr 20231624778.122.24$12,761
Mar 20231134372.852.39$8,335
Feb 20231836475.112.47$13,903
Jan 202307176.533.39$241
Dec 20221857076.415.73$14,537
Nov 20221336485.005.65$11,666
Oct 20222045787.185.86$18,119
Sep 20221986984.888.16$17,370
Aug 20221306194.529.13$12,844
Jul 202218353101.587.54$18,989
Jun 20226560115.097.98$7,959
May 202218948109.378.43$21,076
Apr 202213633104.226.84$14,400
Mar 202220221108.885.08$22,100
Feb 20220091.054.86$0
Jan 20221951381.844.54$16,018
Dec 20211981471.323.90$14,176
Nov 202167877.435.24$5,230
Oct 20211331179.795.71$10,675
Sep 2021581169.865.35$4,111
Aug 2021137866.024.22$9,079
Jul 20211311370.783.98$9,324
Jun 20211281069.493.38$8,929
May 20211331563.483.02$8,488
Apr 2021671360.362.76$4,080
Mar 20211371661.302.72$8,442
Feb 2021681057.805.55$3,986
Jan 20212051450.412.81$10,373
Dec 2020681144.642.68$3,065
Nov 2020681338.772.71$2,672
Oct 2020661336.972.48$2,472
Sep 202068137.091.99$2,524
Aug 202065239.982.39$2,603
Jul 2020120138.371.83$4,606
Jun 202063334.901.69$2,204
May 20200016.921.81$0
Apr 202061114.751.80$902
Mar 2020971430.341.86$2,969
Feb 2020802349.881.98$4,036
Jan 20201032857.252.09$5,955
Dec 20191593659.012.30$9,466
Nov 2019964055.302.75$5,419
Oct 2019994853.472.42$5,410
Sep 2019785255.052.66$4,432
Aug 2019795853.112.30$4,329
Jul 2019733656.272.46$4,196
Jun 20191143252.782.49$6,097
May 20191133658.482.74$6,707
Apr 20191433962.632.75$9,063
Mar 2019724256.803.06$4,218
Feb 2019793950.852.79$4,126
Jan 20191683846.033.23$7,856
Dec 20181123846.594.19$5,377
Nov 20182343552.934.24$12,534
Oct 20181123861.443.40$7,010
Sep 201858459.543.11$3,466
Aug 20182801459.403.07$16,675
Jul 20181033965.142.93$6,824
Jun 20181372060.183.08$8,306
May 20181301965.382.90$8,555
Apr 2018952663.842.90$6,140
Mar 20182107961.222.79$13,076
Feb 20181658161.782.77$10,418
Jan 20182178862.874.01$13,996
Dec 20171659457.272.92$9,724
Nov 201727110655.423.12$15,349
Oct 201727211349.292.98$13,744
Sep 201710911047.523.09$5,519
Aug 20171629645.373.00$7,638
Jul 201727211043.873.09$12,272
Jun 201716111042.493.09$7,180
May 201721611845.373.26$10,185
Apr 201721810747.933.21$10,792
Mar 201716111746.772.98$7,879
Feb 201731310050.452.95$16,086
Jan 20172605749.413.42$13,041
Dec 201639810848.763.72$19,809
Nov 201626410842.492.64$11,503
Oct 201620210046.193.09$9,639
Sep 201626510441.553.10$11,333
Aug 201620010641.442.92$8,598
Jul 201626611941.622.92$11,419
Jun 20162665845.352.69$12,219
May 201633210942.521.99$14,334
Apr 201626112136.561.99$9,783
Mar 20163212233.011.79$10,636
Feb 20162431826.472.06$6,469
Jan 20162766727.352.36$7,707
Dec 20153619032.362.00$11,862
Nov 20152909238.792.17$11,448
Oct 201542528243.552.43$19,193
Sep 20153579942.992.76$15,621
Aug 20153621040.162.87$14,567
Jul 20153601148.152.95$17,366
Jun 20154561156.152.88$25,636
May 201521977655.212.96$14,384
Apr 201561853549.822.71$32,237
Mar 201533946742.892.93$15,910
Feb 201552428744.662.98$24,256
Jan 201535314643.433.10$15,783
Dec 201452132954.693.59$29,675
Nov 201443648770.464.25$32,791
Oct 201460648578.303.90$49,342
Sep 201432133186.164.05$28,996
Aug 201448113289.394.04$43,529
Jul 201464612596.564.18$62,900
Jun 201448813598.164.74$48,542
May 20144819594.734.73$46,014
Apr 201462513695.944.81$60,617
Mar 201439512995.895.06$38,529
Feb 201444610997.406.19$44,115
Jan 201447913590.404.86$43,958
Dec 201352911791.824.35$49,082
Nov 2013241088.853.74$21,413
Oct 2013296097.423.78$28,836
Sep 201335919104.113.72$37,446
Aug 2013313131104.253.52$33,092
Jul 2013322125102.523.72$33,476
Jun 201330211094.403.93$28,941
May 201329712194.834.15$28,667
Apr 201334612693.964.28$33,050
Mar 20133516293.623.91$33,103
Feb 201323010291.233.42$21,332
Jan 201344912291.603.42$41,546
Dec 201234413186.773.42$30,297
Nov 201210713086.953.62$9,775
Oct 201231613489.383.40$28,700
Sep 201232413894.672.92$31,076
Aug 201233414392.662.91$31,364
Jul 201230515885.133.02$26,442
Jun 201232117479.822.52$26,061
May 201245319791.612.49$41,990
Apr 2012457180101.652.00$46,813
Mar 2012457186105.052.22$48,421
Feb 2012327168101.102.57$33,492
Jan 201255715398.092.73$55,054
Dec 201131814996.873.24$31,287
Nov 201147216795.723.31$45,733
Oct 201131716884.983.65$27,552
Sep 201132012683.623.99$27,261
Aug 201131916883.404.15$27,302
Jul 201139015494.144.52$37,410
Jun 201127018492.904.64$25,937
May 201150820698.134.40$50,757
Apr 2011361224105.964.33$39,222
Mar 201147816596.364.06$46,730
Feb 201126616585.644.18$23,470
Jan 201139221686.504.59$34,899
Dec 201054920985.734.35$47,974
Nov 201054418280.843.80$44,668
Oct 201050413378.103.51$39,829
Sep 201040910072.633.98$30,104
Aug 201049910073.684.42$37,208
Jul 20103498872.554.74$25,737
Jun 20102797370.364.91$19,989
May 20103547271.124.24$25,481
Apr 201032710381.694.12$27,137
Mar 201027611178.394.39$22,123
Feb 201042111573.585.44$31,603
Jan 201043014074.365.96$32,810
Dec 200942013871.445.48$30,762
Nov 200949814674.593.75$37,694
Oct 200942713872.544.11$31,542
Sep 200971214665.543.06$47,112
Aug 200943918267.423.22$30,183
Jul 200966918061.133.46$41,520
Jun 200951517666.163.90$34,758
May 200959522154.743.93$33,438
Apr 200953635746.773.59$26,349
Mar 200961032842.144.06$27,037
Feb 200959814032.814.63$20,269
Jan 200968731935.865.37$26,349
Dec 200863440037.105.98$25,912
Nov 200856140655.496.86$33,915
Oct 200889943275.246.92$70,631
Sep 2008675290101.767.88$70,972
Aug 2008875460114.228.48$103,845
Jul 2008725449131.0811.39$100,147
Jun 2008715419131.3313.03$99,362
May 2008720458123.1711.57$93,983
Apr 20081,064467110.3110.45$122,252
Mar 2008705502101.909.66$76,691
Feb 200878845792.538.77$76,922
Jan 20081,01448490.388.21$95,617
Dec 200776351588.337.30$71,156
Nov 200791249791.677.29$87,227
Oct 200785251982.856.92$74,181
Sep 200798750475.846.24$78,001
Aug 200789138069.066.39$63,960
Jul 20071,06149370.906.39$78,374
Jun 200776242662.007.55$50,460
May 200784125258.747.85$51,378
Apr 200785221659.617.81$52,474
Mar 200777826056.927.30$46,182
Feb 20071,03228655.108.22$59,213
Jan 20071,08623750.306.73$56,220
Dec 200684022456.656.92$49,136
Nov 200676819254.207.62$43,088
Oct 20061,45230754.906.01$81,561
Sep 200678031360.085.04$48,439
Aug 20061,02726368.717.34$72,496
Jul 200695657569.376.34$69,965
Jun 200677353966.286.38$54,675
May 200688658066.016.42$62,211
Apr 200686729664.397.36$58,005
Mar 200694433056.707.08$55,862
Feb 20061,25130957.597.75$74,440
Jan 20061,24638660.598.93$78,943
Dec 20051,38839054.9413.42$81,489
Nov 20051,35333054.6910.59$77,490
Oct 20051,33031158.3413.80$81,883
Sep 20051,31236561.4512.08$85,031
Aug 20051,06440061.519.80$69,365
Jul 20051,25041255.697.84$72,844
Jun 20051,24941952.337.38$68,453
May 20051,06440645.226.65$50,814
Apr 20051,14139749.207.36$59,059
Mar 20051,31851350.377.15$70,058
Feb 20051,08048645.226.31$51,905
Jan 20051,07662943.166.32$50,417
Dec 20041,28875239.866.75$56,416
Nov 200483369645.286.33$42,124
Oct 20041,33375449.706.52$71,162
Sep 20041,00662043.245.28$46,775
Aug 20041,01181142.375.55$47,338
Jul 20048381,20138.286.08$39,386
Jun 20041,2331,14536.106.43$51,877
May 20049681,65337.486.49$47,016
Apr 20041,2021,20134.475.86$48,469
Mar 20041,0911,59634.365.53$46,313
Feb 20049561,45232.455.51$39,022
Jan 20041,1941,62732.036.30$48,493
Dec 20031,1671,46630.266.30$44,552
Nov 20031,2441,39128.804.60$42,219
Oct 20031,3691,54628.174.76$45,923
Sep 20031,3501,50326.314.75$42,657
Aug 20031,4271,46129.765.13$49,962
Jul 20031,3611,16429.415.17$46,046
Jun 20031,3301,36428.565.98$46,146
May 20031,2561,37026.595.97$41,580
Apr 20031,7251,41426.675.41$53,652
Mar 20031,6021,44431.146.10$58,689
Feb 20031,3731,21033.487.93$55,558
Jan 20031,7621,17730.315.58$59,976
Dec 20021,7571,22126.914.85$53,207
Nov 20021,7961,23624.664.14$49,403
Oct 20021,7161,23926.464.23$50,645
Sep 20021,1971,38327.443.64$37,873
Aug 20022,1571,07325.963.16$59,391
Jul 20022,0571,09324.583.06$53,908
Jun 20021,9181,10823.733.34$49,213
May 20022,3421,00924.663.58$61,370
Apr 20022,03699423.653.51$51,643
Mar 20022,19396622.003.10$51,243
Feb 20021,74372018.222.38$33,468
Jan 20022,36889517.172.38$42,785
Dec 20012,22069016.932.36$39,216
Nov 20011,74083218.072.41$33,443
Oct 20012,3461,04319.782.53$49,042
Sep 20012,03943324.262.25$50,441
Aug 20012,28081024.873.05$59,177
Jul 20012,35377023.933.20$58,769
Jun 20012,25487724.563.82$58,712
May 20012,5641,12325.524.31$70,270
Apr 20012,0701,05124.685.34$56,695
Mar 20012,7271,10224.545.38$72,845
Feb 20012,13480527.755.77$63,861
Jan 20012,8381,23627.478.40$88,341
Dec 20002,5581,27426.889.12$80,381
Nov 20002,4481,02432.215.66$84,644
Oct 20002,8101,26331.235.15$94,255
Sep 20002,8171,42131.875.19$97,148
Aug 20002,5641,38029.644.54$82,263
Jul 20002,3601,38328.534.09$72,987
Jun 20001,8331,15129.304.40$58,768
May 20002,2931,23927.263.68$67,066
Apr 20002,3971,09224.513.12$62,153
Mar 20002,6101,28828.422.86$77,860
Feb 20002,7521,23627.622.73$79,380
Jan 20002,7392,36525.272.48$75,081
Dec 19992,8501,30624.282.42$72,363
Nov 19992,8271,29023.192.43$68,698
Oct 19992,5411,56220.982.80$57,690
Sep 19992,7891,64121.752.62$64,958
Aug 19992,5972,23919.262.88$56,457
Jul 19992,8221,36417.892.37$53,721
Jun 19992,8251,44315.942.36$48,439
May 19992,7091,56115.792.32$46,398
Apr 19993,0361,45315.102.21$49,052
Mar 19992,7411,37012.471.84$36,699
Feb 19992,5491,1679.981.82$27,560
Jan 19992,7241,35110.381.90$30,842
Dec 19983,1221,4439.201.77$31,281
Nov 19982,9111,46710.892.19$34,907
Oct 19982,8501,59212.421.97$38,532
Sep 19982,7311,56012.592.08$37,632
Aug 19982,8041,43611.301.91$34,424
Jul 19982,8152,78711.742.24$39,283
Jun 19982,6282,65811.242.24$35,485
May 19982,8562,88712.622.21$42,412
Apr 19982,9422,71913.042.51$45,176
Mar 19982,8612,99912.802.31$43,547
Feb 19982,4982,49713.952.30$40,588
Jan 19982,8102,86914.702.15$47,489
Dec 19973,1433,04916.322.41$58,645
Nov 19972,7633,21718.193.09$60,194
Oct 19972,9363,46919.253.15$67,445
Sep 19972,8733,39017.742.95$60,984
Aug 19972,8453,19717.862.55$58,979
Jul 19973,3613,82917.582.25$67,690
Jun 19973,1863,54817.242.26$62,935
May 19973,1411,69618.972.31$63,500
Apr 19972,9602,44917.882.08$58,026
Mar 19972,9472,69518.951.94$61,072
Feb 19973,4292,81820.492.21$76,476
Jan 19973,7192,82223.483.54$97,311
Dec 19962,9472,99323.32$68,724
Nov 19962,3662,38321.97$51,981
Oct 19962,5902,58723.31$60,373
Sep 19962,2652,43722.22$50,328
Aug 19961,6442,58720.26$33,307
Jul 19961,7512,10919.55$34,232
Jun 19961,8911,97118.73$35,418
May 19961,7152,04319.43$33,322
Apr 19961,7412,04521.51$37,449
Mar 19961,6252,14619.38$31,493
Feb 19961,6632,32416.98$28,238
Jan 19961,8982,20417.07$32,399
Dec 19951,7332,16417.19$29,790
Nov 19951,7232,11616.00$27,568
Oct 19951,7572,26315.43$27,111
Sep 19951,3902,34316.18$22,490
Aug 19951,6852,72215.92$26,825
Jul 19951,7323,18215.24$26,396
Jun 19951,7503,10916.41$28,718
May 19951,6582,97117.56$29,114
Apr 19951,5543,00517.73$27,552
Mar 19951,5803,08016.44$25,975
Feb 19951,4452,49416.58$23,958
Jan 19951,3573,12315.92$21,603
Dec 19941,4194,03315.03$21,328
Nov 19941,5894,60815.90$25,265
Oct 19941,4604,99215.58$22,747
Sep 19941,0454,86015.29$15,978
Aug 19941,3635,65416.13$21,985
Jul 19941,2495,35917.56$21,932
Jun 19941,1585,12417.09$19,790
May 19941,3105,47715.88$20,803
Apr 19941,0588,16814.14$14,960
Mar 19941,1651,19012.46$14,516
Feb 19949211,93112.50$11,513
Jan 19949323,37912.66$11,799
Dec 19931,0382,90012.33$12,799
Nov 19939285,13314.49$13,447
Oct 19938993,26015.85$14,249
Sep 19939373,24315.03$14,083
Aug 19931,0004,80015.66$15,660
Jul 19931,0004,80015.46$15,460
Jun 19931,0004,80016.79$16,790
May 19931,0004,80017.68$17,680
Apr 19931,0004,34918.05$18,050
Mar 19931,0084,60518.14$18,285
Feb 19931,0264,03317.90$18,365
Jan 19937254,34216.93$12,274

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                   61 bbl  × $106.41 =     $6,491
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                   $6,491

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/3750 is the state's own key, not one this site invented.