MASTEN "C"

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 66961District 8AField 53411001OilCasinghead gasSave
Value, all time
$17.4 M
Feb 1993 – May 2026
Value, last 12 filed months
$114 k
at the published price for each month
Months reported
400
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition438,414 bbl$15,648,503
Casinghead gasProduction578,659 Mcf$1,766,167
Total$17,414,670

189,914 Mcf of this lease's gas, across 47 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 (18)

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 33.5206, -102.8991. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.4 miles.

33.52172, -102.90026 · 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
38.9%
7 of 18 wells
With a plug date
38.9%
7 of 18 wells
Median depth
5,006 ft
18 wells filed one
Completion to plug
27.0 years
median over 7 wells

What the state filed about each well

On the RRC proration schedule
738.9%
A plug date is filed
738.9%
BothOn the schedule and plugged. Neither fact cancels the other.
738.9%
NeitherNo plug date, and not on the schedule.
1161.1%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 18 of 18 wells. Median 5,006 ft, with the middle half between 4,998 and 5,015 ft; the shallowest is 4,979 ft and the deepest 5,042 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

80s
90s
00s

Last completion by decade, 18 of 18 wells, Aug 1984 – Mar 2004. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Aug 1984 – Mar 2004
18 of 18 wells
Plug dates filed
May 2001 – Aug 2022
7 of 18 wells; 11 filed none

Last completion to plug: a median of 27.0 years across the 7 wells that filed both dates, with the middle half between 18.9 years and 28.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

18 wells

42-07933062125,004 ftMar 2004
42-0793290265,010 ftAug 1997
42-07932904115,042 ftMay 1997Oct 2016Yes
42-07932903105,010 ftMay 1997
42-0793289195,006 ftDec 1996
42-07932710175,006 ftOct 1993
42-07932711164,980 ftSep 1993
42-07932707194,998 ftAug 1993Aug 2020Yes
42-07932709184,998 ftJul 1993Aug 2022Yes
42-07932689205,002 ftJun 1993Aug 2020Yes
42-07932690215,024 ftJun 1993
42-0793265575,016 ftApr 1993May 2001Yes
42-0793265815,016 ftApr 1993Sep 2011Yes
42-0793265654,992 ftApr 1993
42-0793265744,996 ftMar 1993
42-0793265485,010 ftMar 1993
42-0793264935,016 ftFeb 1993
42-0790192924,979 ftAug 1984Sep 2017Yes

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 (400)

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

400 months

May 20261220106.413.05$12,982
Apr 2026213098.932.87$21,072
Mar 20260089.753.15$0
Feb 2026104063.503.75$6,604
Jan 20260359.138.00$24
Dec 20251178656.664.41$7,009
Nov 20252488658.593.93$14,868
Oct 2025010159.383.30$334
Sep 20252216962.743.08$14,078
Aug 20251018363.933.01$6,707
Jul 20252156366.743.32$14,558
Jun 20252333066.483.13$15,584
May 2025122060.553.23$7,387
Apr 202591062.363.54$5,675
Mar 2025245067.704.27$16,587
Feb 2025120070.884.34$8,506
Jan 2025237074.324.28$17,614
Dec 2024128068.993.12$8,831
Nov 20241141069.052.20$7,894
Oct 20242345771.372.28$16,831
Sep 20241257369.612.36$8,874
Aug 20242325275.632.06$17,653
Jul 20241184879.932.15$9,535
Jun 20241253278.082.63$9,844
May 20241205978.812.20$9,587
Apr 20242325384.451.66$19,680
Mar 20242453880.301.55$19,732
Feb 20241299376.091.78$9,981
Jan 20243669873.023.30$27,048
Dec 20231257271.262.61$9,095
Nov 20232428677.892.81$19,091
Oct 20231141985.443.09$9,799
Sep 202324710889.042.74$22,288
Aug 20232568680.522.67$20,843
Jul 20232197174.852.64$16,580
Jun 202326712768.962.26$18,699
May 202323512470.622.23$16,872
Apr 202332314278.122.24$25,551
Mar 202322812972.852.39$16,919
Feb 202333619175.112.47$25,708
Jan 2023021476.533.39$725
Dec 202229821076.415.73$23,973
Nov 202221519485.005.65$19,370
Oct 202232717487.185.86$29,528
Sep 202231621084.888.16$28,536
Aug 202220518094.529.13$21,019
Jul 2022294162101.587.54$31,086
Jun 2022105180115.097.98$13,520
May 2022308141109.378.43$34,875
Apr 202221596104.226.84$23,064
Mar 202232460108.885.08$35,582
Feb 20220091.054.86$0
Jan 20223173681.844.54$26,107
Dec 20213193971.323.90$22,903
Nov 20211072677.435.24$8,421
Oct 20212173679.795.71$17,520
Sep 20211033569.865.35$7,383
Aug 20212182166.024.22$14,481
Jul 20212094270.783.98$14,960
Jun 20212053369.493.38$14,357
May 20212154763.483.02$13,790
Apr 20211084160.362.76$6,632
Mar 20212214861.302.72$13,678
Feb 20211093357.805.55$6,483
Jan 20213244550.412.81$16,459
Dec 20201093344.642.68$4,954
Nov 20201073638.772.71$4,246
Oct 20201073936.972.48$4,052
Sep 2020109637.091.99$4,055
Aug 2020105339.982.39$4,205
Jul 2020196638.371.83$7,531
Jun 20201141234.901.69$3,999
May 20200016.921.81$0
Apr 2020113114.751.80$1,669
Mar 20202596530.341.86$7,979
Feb 20202456049.881.98$12,339
Jan 20202446557.252.09$14,105
Dec 20193609559.012.30$21,463
Nov 201926510055.302.75$14,930
Oct 201942711553.472.42$23,110
Sep 201927613055.052.66$15,539
Aug 201927115053.112.30$14,738
Jul 20192599456.272.46$14,805
Jun 20193857552.782.49$20,507
May 20193998658.482.74$23,569
Apr 201950710062.632.75$32,028
Mar 201925310956.803.06$14,704
Feb 20192569550.852.79$13,283
Jan 20193379946.033.23$15,832
Dec 20182278646.594.19$10,936
Nov 20184677952.934.24$25,053
Oct 20182268661.443.40$14,178
Sep 2018113859.543.11$6,753
Aug 20185573059.403.07$33,178
Jul 20182438965.142.93$16,090
Jun 20183715260.183.08$22,487
May 20183364765.382.90$22,104
Apr 20182446563.842.90$15,766
Mar 201846719561.222.79$29,133
Feb 201834616161.782.77$21,821
Jan 201846017762.874.01$29,630
Dec 201734818957.272.92$20,482
Nov 201757221355.423.12$32,364
Oct 201757122549.292.98$28,816
Sep 201723021947.523.09$11,606
Aug 201734519345.373.00$16,233
Jul 201757121943.873.09$25,726
Jun 201734421942.493.09$15,293
May 201746023545.373.26$21,637
Apr 201745719747.933.21$22,537
Mar 201734421146.772.98$16,718
Feb 201753318150.452.95$27,424
Jan 201741211449.413.42$20,747
Dec 201661621848.763.72$30,848
Nov 201640621442.492.64$17,817
Oct 201631420246.193.09$15,128
Sep 201641421141.553.10$17,856
Aug 201631421241.442.92$13,632
Jul 201641823841.622.92$18,093
Jun 201641011645.352.69$18,905
May 201651722042.521.99$22,421
Apr 201641224036.561.99$15,541
Mar 20165264333.011.79$17,440
Feb 20164354726.472.06$11,611
Jan 201640116627.352.36$11,360
Dec 201548017832.362.00$15,889
Nov 201539118638.792.17$15,570
Oct 201557156343.552.43$26,233
Sep 201546419842.992.76$20,494
Aug 20154821940.162.87$19,412
Jul 20154802348.152.95$23,180
Jun 20155552356.152.88$31,230
May 20152701,55255.212.96$19,494
Apr 20157011,07249.822.71$37,825
Mar 201533273342.892.93$16,391
Feb 20154971,47444.662.98$26,583
Jan 201532975543.433.10$16,629
Dec 20144981,69354.693.59$33,316
Nov 20144172,50670.464.25$40,037
Oct 20145752,49378.303.90$54,748
Sep 20143381,71186.164.05$36,044
Aug 201452767989.394.04$49,848
Jul 201470764396.564.18$70,955
Jun 201453569598.164.74$55,808
May 201452849094.734.73$52,333
Apr 201469870295.944.81$70,342
Mar 201445067195.895.06$46,544
Feb 201457056497.406.19$59,010
Jan 201470169590.404.86$66,749
Dec 201384360691.824.35$80,043
Nov 2013440088.853.74$39,094
Oct 2013547097.423.78$53,289
Sep 201366397104.113.72$69,386
Aug 2013529672104.253.52$57,515
Jul 2013527644102.523.72$56,422
Jun 201353657094.403.93$52,840
May 201355962394.834.15$55,595
Apr 201366464893.964.28$65,165
Mar 201367631693.623.91$64,524
Feb 201345253191.233.42$43,052
Jan 201390563691.603.42$85,073
Dec 201269067586.773.42$62,180
Nov 201223367286.953.62$22,695
Oct 201269668989.383.40$64,551
Sep 201270071794.672.92$68,361
Aug 201269874192.662.91$66,832
Jul 201256381685.133.02$50,393
Jun 201254178679.822.52$45,163
May 201275488691.612.49$71,279
Apr 2012742809101.652.00$77,040
Mar 2012742832105.052.22$79,796
Feb 2012531755101.102.57$55,625
Jan 201298478398.092.73$98,661
Dec 201154376196.873.24$55,066
Nov 201173679095.723.31$73,066
Oct 201154982484.983.65$49,660
Sep 201154761283.623.99$48,179
Aug 201154882483.404.15$49,122
Jul 201164274394.144.52$63,794
Jun 201142478792.904.64$43,041
May 201170187698.134.40$72,648
Apr 2011501777105.964.33$56,453
Mar 201174562296.364.06$74,312
Feb 201142362085.644.18$38,817
Jan 201162780786.504.59$57,939
Dec 201094981385.734.35$84,892
Nov 20101,01076180.843.80$84,537
Oct 201089098878.103.51$72,976
Sep 201063567272.633.98$48,794
Aug 201071565273.684.42$55,563
Jul 201050758172.554.74$39,535
Jun 201040449270.364.91$30,841
May 201051549171.124.24$38,706
Apr 201047569581.694.12$41,668
Mar 201040474178.394.39$34,922
Feb 201061178173.585.44$49,208
Jan 201061894474.365.96$51,585
Dec 200960994271.445.48$48,673
Nov 200972297974.593.75$57,527
Oct 200961693072.544.11$48,507
Sep 20091,03597265.543.06$70,813
Aug 20096141,22667.423.22$45,342
Jul 20099011,20561.133.46$59,253
Jun 20097071,19266.163.90$51,418
May 20097981,51854.743.93$49,642
Apr 20096791,35846.773.59$36,629
Mar 20097611,24742.144.06$37,130
Feb 200979354032.814.63$28,520
Jan 20098551,10235.865.37$36,579
Dec 20087451,38937.105.98$35,942
Nov 20086591,40455.496.86$46,200
Oct 20081,0171,49075.246.92$86,833
Sep 20087171,009101.767.88$80,910
Aug 20088731,588114.228.48$113,185
Jul 20086681,554131.0811.39$105,261
Jun 20086701,452131.3313.03$106,914
May 20086671,587123.1711.57$100,523
Apr 20089911,614110.3110.45$126,191
Mar 20086601,742101.909.66$84,089
Feb 20087721,57392.538.77$85,229
Jan 20081,0471,67590.388.21$108,372
Dec 20077931,77688.337.30$83,014
Nov 20079701,72091.677.29$101,462
Oct 20078781,79482.856.92$85,160
Sep 20079291,74875.846.24$81,370
Aug 20078341,31869.066.39$66,015
Jul 20079971,70470.906.39$81,572
Jun 20077911,47662.007.55$60,184
May 20078701,43858.747.85$62,387
Apr 20078821,24059.617.81$62,254
Mar 20077771,49056.927.30$55,107
Feb 20071,0641,63555.108.22$72,060
Jan 20071,1791,35850.306.73$68,439
Dec 20068901,28756.656.92$59,323
Nov 20068071,10954.207.62$52,187
Oct 20061,4881,75154.906.01$92,221
Sep 20067961,79860.085.04$56,881
Aug 20061,0501,51068.717.34$83,229
Jul 20061,0861,59169.376.34$85,427
Jun 20069681,49266.286.38$73,684
May 20061,0321,60666.016.42$78,441
Apr 20068621,69664.397.36$67,988
Mar 20069421,88456.707.08$66,756
Feb 20061,1631,76957.597.75$80,689
Jan 20069882,21060.598.93$79,606
Dec 20051,0982,22954.9413.42$90,227
Nov 20051,0911,88854.6910.59$79,658
Oct 20051,1151,78058.3413.80$89,606
Sep 20051,1042,09761.4512.08$93,170
Aug 20059412,29561.519.80$80,365
Jul 20051,1762,35555.697.84$83,963
Jun 20051,3702,40652.337.38$89,451
May 20051,1972,31945.226.65$69,552
Apr 20051,3082,27249.207.36$81,077
Mar 20051,4791,42250.377.15$84,671
Feb 20051,2011,30545.226.31$62,546
Jan 20051,1841,69643.166.32$61,824
Dec 20041,6712,02539.866.75$80,277
Nov 20041,4711,87045.286.33$78,445
Oct 20042,3652,02849.706.52$130,753
Sep 20041,8011,67943.245.28$86,747
Aug 20041,7992,18242.375.55$88,335
Jul 20041,4201,80438.286.08$65,333
Jun 20041,9151,71636.106.43$80,171
May 20041,3411,27137.486.49$58,515
Apr 20041,64692734.475.86$62,168
Mar 20041,5651,22934.365.53$60,570
Feb 20041,4951,04632.455.51$54,276
Jan 20041,9161,17032.036.30$68,740
Dec 20031,9241,52830.266.30$67,849
Nov 20031,8411,44528.804.60$59,661
Oct 20032,0221,61028.174.76$64,623
Sep 20031,9881,56726.314.75$59,747
Aug 20032,0681,52029.765.13$69,341
Jul 20031,8051,20929.415.17$59,337
Jun 20031,5031,41828.565.98$51,410
May 20031,6011,42226.595.97$51,064
Apr 20032,0221,46926.675.41$61,870
Mar 20032,0071,50031.146.10$71,642
Feb 20031,7131,25833.487.93$67,322
Jan 20032,0071,22430.315.58$67,665
Dec 20022,0351,27226.914.85$60,936
Nov 20022,1681,28724.664.14$58,787
Oct 20021,9041,28826.464.23$55,827
Sep 20021,3301,44027.443.64$41,730
Aug 20021,9922,50525.963.16$59,639
Jul 20021,8982,55024.583.06$54,460
Jun 20021,7712,58723.733.34$50,662
May 20022,1622,35424.663.58$61,752
Apr 20021,8802,32123.653.51$52,614
Mar 20022,0242,25322.003.10$51,518
Feb 20021,6091,68018.222.38$33,307
Jan 20022,1862,08717.172.38$42,492
Dec 20012,0491,61116.932.36$38,499
Nov 20011,6071,94118.072.41$33,708
Oct 20012,1662,43419.782.53$48,999
Sep 20011,8831,01124.262.25$47,958
Aug 20012,1051,88924.873.05$58,119
Jul 20012,1721,79823.933.20$57,724
Jun 20012,0792,04624.563.82$58,884
May 20012,3672,62125.524.31$71,695
Apr 20011,9102,45424.685.34$60,232
Mar 20012,5172,57224.545.38$75,595
Feb 20011,9701,88027.755.77$65,510
Jan 20012,6202,88527.478.40$96,202
Dec 20002,3622,97326.889.12$90,612
Nov 20002,2542,38932.215.66$86,118
Oct 20002,5942,94731.235.15$96,174
Sep 20002,6003,31531.875.19$100,055
Aug 20002,3663,21929.644.54$84,745
Jul 20002,0103,22628.534.09$70,539
Jun 20001,5622,68729.304.40$57,582
May 20001,9532,89227.263.68$63,881
Apr 20002,0422,54924.513.12$57,992
Mar 20002,2233,02128.422.86$71,817
Feb 20002,3442,90227.622.73$72,654
Jan 20002,3342,03225.272.48$64,021
Dec 19992,4283,06124.282.42$66,371
Nov 19992,4092,94723.192.43$63,038
Oct 19992,1573,56420.982.80$55,246
Sep 19992,3763,66521.752.62$61,276
Aug 19992,2123,53919.262.88$52,780
Jul 19992,4043,18117.892.37$50,554
Jun 19992,4063,36515.942.36$46,300
May 19992,3083,64115.792.32$44,894
Apr 19992,5873,39015.102.21$46,549
Mar 19992,3353,19612.471.84$34,993
Feb 19992,1712,7239.981.82$26,616
Jan 19992,3203,15110.381.90$30,068
Dec 19982,6593,3669.201.77$30,432
Nov 19982,4803,42410.892.19$34,491
Oct 19982,4283,71412.421.97$37,469
Sep 19982,3273,64112.592.08$36,880
Aug 19982,3883,35111.301.91$33,376
Jul 19982,7052,67711.742.24$37,746
Jun 19982,5252,55411.242.24$34,095
May 19982,7442,77312.622.21$40,747
Apr 19982,8262,61313.042.51$43,397
Mar 19982,7492,88212.802.31$41,843
Feb 19982,4002,40013.952.30$38,998
Jan 19982,7012,75714.702.15$45,645
Dec 19973,0202,92916.322.41$56,349
Nov 19972,6543,09018.193.09$57,819
Oct 19973,4474,07319.253.15$79,184
Sep 19973,3723,98017.742.95$71,580
Aug 19973,3403,75417.862.55$69,243
Jul 19973,9454,49417.582.25$79,451
Jun 19973,7402,78717.242.26$70,768
May 19972,4682,54418.972.31$52,691
Apr 19972,3231,92417.882.08$45,543
Mar 19972,3162,11718.951.94$47,993
Feb 19972,6952,21520.492.21$60,107
Jan 19972,9222,21723.483.54$76,456
Dec 19962,3172,37523.32$54,032
Nov 19961,8591,87321.97$40,842
Oct 19962,0351,99423.31$47,436
Sep 19962,1551,91522.22$47,884
Aug 19962,4661,99420.26$49,961
Jul 19962,6273,16319.55$51,358
Jun 19962,3122,95718.73$43,304
May 19962,5723,06519.43$49,974
Apr 19962,6123,06821.51$56,184
Mar 19962,4383,21819.38$47,248
Feb 19962,4943,48616.98$42,348
Jan 19962,8473,30717.07$48,598
Dec 19952,5993,24717.19$44,677
Nov 19952,5853,17316.00$41,360
Oct 19952,6343,39515.43$40,643
Sep 19952,0853,51416.18$33,735
Aug 19952,5284,08415.92$40,246
Jul 19952,5994,77315.24$39,609
Jun 19952,6254,66316.41$43,076
May 19952,4874,45617.56$43,672
Apr 19952,3324,50817.73$41,346
Mar 19952,3704,61916.44$38,963
Feb 19952,1673,74216.58$35,929
Jan 19952,0354,68415.92$32,397
Dec 19942,1294,92915.03$31,999
Nov 19942,3835,63315.90$37,890
Oct 19942,1906,10215.58$34,120
Sep 19941,5685,94015.29$23,975
Aug 19942,0456,90916.13$32,986
Jul 19941,8738,03817.56$32,890
Jun 19941,7377,68517.09$29,685
May 19941,6028,21415.88$25,440
Apr 19941,5885,44614.14$22,454
Mar 19941,7471,78412.46$21,768
Feb 19941,3822,89612.50$17,275
Jan 19941,3992,25412.66$17,711
Dec 19931,5564,34812.33$19,185
Nov 19931,3913,42314.49$20,156
Oct 19931,3484,89015.85$21,366
Sep 19931,4064,86415.03$21,132
Aug 19931,5803,71915.66$24,743
Jul 19931,5182,91915.46$23,468
Jun 19932,02213,45216.79$33,949
May 19931,7265,19317.68$30,516
Apr 19932,386118.05$43,067
Mar 1993353118.14$6,403
Feb 19930117.90$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
Oil                  122 bbl  × $106.41 =    $12,982
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $12,982

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/66961 is the state's own key, not one this site invented.