NIX-SOUTH UNIT

Operated by MONTARE OPERATING, LTD. (P-5 577015) in the NIX, SOUTH field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 20638District 08Field 65572001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$9.3 M
Jan 1993 – May 2026
Value, last 12 filed months
$50 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 35 leases and 83 wells, and the rule below applies to all of them.

Discovered
1954-02-01
as the register files it
Field class
Oil
the register's own label
Between wells
933 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 40 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.

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
NGPA2none

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
OilDisposition131,976 bbl$9,009,672
Casinghead gasProduction94,295 Mcf$320,797
Total$9,330,469

250 Mcf of this lease's gas, across 44 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 (27)

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 32.2583, -102.7720. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.7 miles. 1 well has no surveyed location and is left out of it.

32.25727, -102.77275 · centre of 26 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
70.4%
19 of 27 wells
With a plug date
51.9%
14 of 27 wells
Median depth
7,080 ft
23 wells filed one
Completion to plug
37.6 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
1970.4%
A plug date is filed
1451.9%
BothOn the schedule and plugged. Neither fact cancels the other.
1451.9%
NeitherNo plug date, and not on the schedule.
829.6%

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, 23 of 27 wells. Median 7,080 ft, with the middle half between 7,025 and 7,393 ft; the shallowest is 3,875 ft and the deepest 7,518 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, 17 of 27 wells, Jun 1957 – Sep 2011. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 1957 – Sep 2011
17 of 27 wells; 10 filed none
Plug dates filed
Jan 1975 – Aug 2019
14 of 27 wells; 13 filed none

Last completion to plug: a median of 37.6 years across the 8 wells that filed both dates, with the middle half between 30.9 years and 39.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

27 wells

42-00301533187,024 ftApr 1995Yes
42-0030321557,080 ftJan 1988Yes
42-00303217193,875 ftJan 1975Yes
42-00303221137,007 ftAug 2011Yes
42-0030322317,024 ftOct 1994Yes
42-0030417527,455 ftNov 1994Yes
42-003841139Yes
42-0038411921Yes
42-0030153016
42-0030153217
42-0030152967,385 ftSep 2011Yes
42-00342560277,217 ftMay 2011
42-00342519267,510 ftApr 2011
42-00342518257,518 ftApr 2011
42-00342555247,300 ftApr 2011
42-00341378227,515 ftMay 2010
42-00341377237,161 ftMay 2010
42-00301527117,400 ftMay 2009Yes
42-00301523107,280 ftNov 2005Yes
42-00301536157,050 ftMay 2003Jun 2012Yes
42-00303220127,026 ftApr 1977Oct 2014Yes
42-0030322237,032 ftFeb 1975Aug 2019Yes
42-0030152687,030 ftAug 1974Nov 1994Yes
42-0030152177,450 ftJul 1974Feb 2012Yes
42-0030321647,018 ftApr 1960Oct 1994Yes
42-00301493147,021 ftDec 1957Feb 2015Yes
42-00303130207,080 ftJun 1957Apr 1995Yes

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 20266819106.413.05$7,294
Apr 202659998.932.87$5,863
Mar 202660289.753.15$5,391
Feb 202656663.503.75$3,579
Jan 2026351159.138.00$2,158
Dec 202561856.664.41$3,492
Nov 2025422358.593.93$2,551
Oct 2025758659.383.30$4,738
Sep 20255212562.743.08$3,647
Aug 2025575163.933.01$3,798
Jul 2025523966.743.32$3,600
Jun 2025574766.483.13$3,936
May 202559060.553.23$3,572
Apr 2025542762.363.54$3,463
Mar 2025605367.704.27$4,288
Feb 2025544270.884.34$4,010
Jan 2025695474.324.28$5,359
Dec 2024691468.993.12$4,804
Nov 2024565869.052.20$3,994
Oct 2024629071.372.28$4,630
Sep 2024647269.612.36$4,625
Aug 2024677075.632.06$5,212
Jul 20241167179.932.15$9,424
Jun 20241587178.082.63$12,524
May 20240178.812.20$2
Apr 20240084.451.66$0
Mar 20241944780.301.55$15,651
Feb 202415412476.091.78$11,939
Jan 202422612173.023.30$16,902
Dec 20231117071.262.61$8,093
Nov 20238816477.892.81$7,315
Oct 20238610585.443.09$7,672
Sep 202328926689.042.74$26,460
Aug 20231382780.522.67$11,184
Jul 20231242374.852.64$9,342
Jun 2023190068.962.26$13,102
May 20231894270.622.23$13,441
Apr 20231606578.122.24$12,645
Mar 20231904872.852.39$13,956
Feb 20232619475.112.47$19,835
Jan 20231128176.533.39$8,846
Dec 20222025976.415.73$15,773
Nov 20221872585.005.65$16,036
Oct 20221967787.185.86$17,539
Sep 20221026484.888.16$9,180
Aug 202220313194.529.13$20,383
Jul 2022192240101.587.54$21,313
Jun 2022216218115.097.98$26,598
May 2022226218109.378.43$26,556
Apr 2022201218104.226.84$22,439
Mar 2022251167108.885.08$28,177
Feb 202222816791.054.86$21,571
Jan 202221716781.844.54$18,517
Dec 202121423771.323.90$16,187
Nov 202124025577.435.24$19,919
Oct 202124430879.795.71$21,229
Sep 202128023169.865.35$20,797
Aug 202128133466.024.22$19,961
Jul 20211996070.783.98$14,324
Jun 202111310169.493.38$8,194
May 20212417963.483.02$15,537
Apr 202127518360.362.76$17,104
Mar 202125411761.302.72$15,888
Feb 202112926857.805.55$8,943
Jan 202124926850.412.81$13,305
Dec 202027620644.642.68$12,872
Nov 202027322238.772.71$11,185
Oct 202087847036.972.48$33,625
Sep 202085947037.091.99$32,796
Aug 202088846939.982.39$36,621
Jul 202087516638.371.83$33,877
Jun 202010533634.901.69$4,232
May 202044536916.921.81$8,199
Apr 202060155914.751.80$9,873
Mar 202072873930.341.86$23,459
Feb 202070162849.881.98$36,210
Jan 202073242157.252.09$42,789
Dec 2019686059.012.30$40,481
Nov 201950142155.302.75$28,863
Oct 201952159453.472.42$29,294
Sep 201951732455.052.66$29,322
Aug 201959872853.112.30$33,437
Jul 201957468256.272.46$33,977
Jun 201976962852.782.49$42,152
May 201992062858.482.74$55,523
Apr 20191,30976662.632.75$84,090
Mar 201935043656.803.06$21,215
Feb 201952037050.852.79$27,475
Jan 201955051246.033.23$26,969
Dec 201854250046.594.19$27,345
Nov 201851338252.934.24$28,772
Oct 201853360161.443.40$34,790
Sep 201853153059.543.11$33,263
Aug 201852359259.403.07$32,882
Jul 201853369165.142.93$36,746
Jun 201869865360.183.08$44,015
May 201850970465.382.90$35,321
Apr 201854164863.842.90$36,417
Mar 201854336861.222.79$34,268
Feb 201855354761.782.77$35,677
Jan 201871763862.874.01$47,636
Dec 201752469957.272.92$32,052
Nov 201753168155.423.12$31,552
Oct 201787678149.292.98$45,508
Sep 201751377147.523.09$26,758
Aug 201787984345.373.00$42,413
Jul 201753387643.873.09$26,087
Jun 201755762942.493.09$25,609
May 201757284345.373.26$28,703
Apr 201770484247.933.21$36,447
Mar 201770384146.772.98$35,389
Feb 201772977350.452.95$39,060
Jan 201772577749.413.42$38,479
Dec 20167171,07048.763.72$38,944
Nov 20168821,11242.492.64$40,417
Oct 201669989446.193.09$35,050
Sep 201689578541.553.10$39,621
Aug 201669678441.442.92$31,135
Jul 201671385141.622.92$32,164
Jun 201672180345.352.69$34,854
May 201685275342.521.99$37,726
Apr 201652468936.561.99$20,529
Mar 201668268533.011.79$23,742
Feb 201668456326.472.06$19,267
Jan 201686162327.352.36$25,021
Dec 201567360832.362.00$22,995
Nov 201586141438.792.17$34,295
Oct 201585323143.552.43$37,709
Sep 201565836842.992.76$29,303
Aug 201583234240.162.87$34,396
Jul 201567137548.152.95$33,413
Jun 201585835756.152.88$49,206
May 201583468655.212.96$48,073
Apr 201587590049.822.71$46,028
Mar 20151,17943942.892.93$51,856
Feb 201571337144.662.98$32,947
Jan 20151,24436043.433.10$55,143
Dec 201489536454.693.59$50,255
Nov 201434614570.464.25$24,996
Oct 20141,03316978.303.90$81,543
Sep 201454315686.164.05$47,416
Aug 201487417189.394.04$78,817
Jul 20147166196.564.18$69,392
Jun 20147093498.164.74$69,756
May 201454210994.734.73$51,859
Apr 201491513495.944.81$88,430
Mar 201470045495.895.06$69,419
Feb 20141,07650897.406.19$107,948
Jan 20141,22370190.404.86$113,967
Dec 201388265291.824.35$83,824
Nov 201369772088.853.74$64,620
Oct 20131,0711,62797.423.78$110,486
Sep 20131,5622,058104.113.72$170,271
Aug 20131,6012,024104.253.52$174,034
Jul 20131,409910102.523.72$147,834
Jun 20131,23776394.403.93$119,774
May 20132,29173294.834.15$220,293
Apr 201352439993.964.28$50,944
Mar 201387553693.623.91$84,015
Feb 2013038191.233.42$1,303
Jan 201344060391.603.42$42,366
Dec 201251026386.773.42$45,152
Nov 20121,06866786.953.62$95,280
Oct 20121,08662789.383.40$99,198
Sep 201268432094.672.92$65,688
Aug 201252549892.662.91$50,095
Jul 20129031,06685.133.02$80,093
Jun 20121,05799979.822.52$86,886
May 20121,06469991.612.49$99,212
Apr 20121,069538101.652.00$109,738
Mar 20121,288654105.052.22$136,758
Feb 20121,152953101.102.57$118,917
Jan 20121,6841,76598.092.73$170,009
Dec 20111,1161,47196.873.24$112,873
Nov 20111,66551695.723.31$161,082
Oct 20111,4641,35984.983.65$129,369
Sep 20111,7501,03283.623.99$150,448
Aug 20112,3632,33983.404.15$206,779
Jul 20111,93199894.144.52$186,293
Jun 20111,57214392.904.64$146,702
May 20111,2211,57698.134.40$126,759
Apr 20111,4481,386105.964.33$159,436
Mar 201153814096.364.06$52,410
Feb 20111,06784585.644.18$94,910
Jan 201170084186.504.59$64,409
Dec 20101,15558585.734.35$101,562
Nov 20109891,25380.843.80$84,706
Oct 20101,31958478.103.51$105,063
Sep 20101,2901,28172.633.98$98,790
Aug 20101,2161,42073.684.42$95,870
Jul 20102,0411,78272.554.74$156,515
Jun 20102,0152,09970.364.91$152,082
May 2010874071.124.24$62,159
Apr 2010123081.694.12$10,048
Mar 201087078.394.39$6,820
Feb 201097073.585.44$7,137
Jan 2010116074.365.96$8,626
Dec 2009143071.445.48$10,216
Nov 200953074.593.75$3,953
Oct 20090072.544.11$0
Sep 200934065.543.06$2,228
Aug 200914067.423.22$944
Jul 200928061.133.46$1,712
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 200957042.144.06$2,402
Feb 20090032.814.63$0
Jan 200937035.865.37$1,327
Dec 200823037.105.98$853
Nov 200892055.496.86$5,105
Oct 2008117075.246.92$8,803
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 200834092.538.77$3,146
Jan 200857090.388.21$5,152
Dec 200743088.337.30$3,798
Nov 200741091.677.29$3,758
Oct 2007165082.856.92$13,670
Sep 2007228075.846.24$17,292
Aug 200792069.066.39$6,354
Jul 200764070.906.39$4,538
Jun 2007192062.007.55$11,904
May 2007187058.747.85$10,984
Apr 2007289059.617.81$17,227
Mar 2007198056.927.30$11,270
Feb 200748055.108.22$2,645
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 200634054.906.01$1,867
Sep 200663060.085.04$3,785
Aug 200659068.717.34$4,054
Jul 200668069.376.34$4,717
Jun 200673066.286.38$4,838
May 200699066.016.42$6,535
Apr 2006191064.397.36$12,298
Mar 2006247056.707.08$14,005
Feb 20060057.597.75$0
Jan 2006165060.598.93$9,997
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 2005157045.226.65$7,100
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 2005170045.226.31$7,687
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 2004170042.375.55$7,203
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 2004169034.475.86$5,825
Mar 20040034.365.53$0
Feb 2004170032.455.51$5,517
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 2003168028.174.76$4,733
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 2003167029.415.17$4,911
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 2003171026.675.41$4,561
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 2003171030.315.58$5,183
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 2002167026.464.23$4,419
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 2002184024.583.06$4,523
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 2002161023.653.51$3,808
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 2002176017.172.38$3,022
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 2001181024.262.25$4,391
Aug 20010024.873.05$0
Jul 2001172023.933.20$4,116
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 2001190024.545.38$4,663
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 2000186026.889.12$5,000
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 2000184031.875.19$5,864
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 2000162029.304.40$4,747
May 20000027.263.68$0
Apr 2000181024.513.12$4,436
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 1999198024.282.42$4,807
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 1999181021.752.62$3,937
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 1999176015.942.36$2,805
May 19990015.792.32$0
Apr 1999199015.102.21$3,005
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 1998151010.892.19$1,644
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 1998169011.742.24$1,984
Jun 19980011.242.24$0
May 1998191012.622.21$2,410
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 1998195013.952.30$2,720
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 1997183018.193.09$3,329
Oct 19970019.253.15$0
Sep 19970017.742.95$0
Aug 1997331017.862.55$5,912
Jul 19970017.582.25$0
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 19970023.483.54$0
Dec 1996184023.32$4,291
Nov 19960021.97$0
Oct 19960023.31$0
Sep 19960022.22$0
Aug 1996170120.26$3,444
Jul 19960119.55$0
Jun 19960118.73$0
May 1996180119.43$3,497
Apr 19960121.51$0
Mar 19960119.38$0
Feb 1996180116.98$3,056
Jan 19960117.07$0
Dec 1995422117.19$7,254
Nov 199544116.00$704
Oct 19950115.43$0
Sep 19950116.18$0
Aug 19950115.92$0
Jul 19950115.24$0
Jun 19950116.41$0
May 19950117.56$0
Apr 1995393117.73$6,968
Mar 19950116.44$0
Feb 19950116.58$0
Jan 19950115.92$0
Dec 19940115.03$0
Nov 19940115.90$0
Oct 19940115.58$0
Sep 1994464115.29$7,095
Aug 19940116.13$0
Jul 19940117.56$0
Jun 19940117.09$0
May 19940115.88$0
Apr 199412114.14$14
Mar 19940412.46$0
Feb 19940112.50$0
Jan 19940112.66$0
Dec 19930112.33$0
Nov 19930314.49$0
Oct 199301315.85$0
Sep 199305015.03$0
Aug 19932661915.66$4,166
Jul 199311715.46$15
Jun 19934402716.79$7,388
May 199303517.68$0
Apr 19931118.05$18
Mar 199312618.14$18
Feb 19933117.90$54
Jan 19933216.93$51

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                   68 bbl  × $106.41 =     $7,236
Casinghead gas        19 Mcf  × $  3.05 =        $58

────────────────────────────────────────────────────
Month total                                   $7,294

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. 08/O/20638 is the state's own key, not one this site invented.