RIGGAN

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

Oil lease lease 28532District 08Field 33176001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$4.6 M
Jan 1993 – May 2026
Value, last 12 filed months
$36 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 510 leases and 5,228 wells, and the rule below applies to all of them.

Discovered
1930-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 5 acres. The field rule took effect on 2008-10-20.

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: ANDRES RESERVOIRS.

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
OilDisposition83,214 bbl$4,335,563
Casinghead gasProduction80,684 Mcf$221,910
Total$4,557,473

14,270 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 (5)

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 32.2993, -102.6952. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.29941, -102.69593 · 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 5 wells
With a plug date
0.0%
0 of 5 wells
Median depth
4,716 ft
5 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.
5100.0%

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

Between 4,494 and 4,735 ft, median 4,716 ft, over the 5 wells that filed a depth.

Completions filed
Nov 1983 – Nov 2011
5 of 5 wells

5 wells

42-0034341554,716 ftNov 2011
42-0034169144,735 ftSep 2010
42-0034169034,730 ftAug 2010
42-0033386824,583 ftFeb 1984
42-0033377414,494 ftNov 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 202645125106.413.05$5,169
Apr 20264112098.932.87$4,401
Mar 2026319689.753.15$3,085
Feb 2026226463.503.75$1,637
Jan 2026174959.138.00$1,397
Dec 2025194856.664.41$1,288
Nov 2025265358.593.93$1,731
Oct 2025296459.383.30$1,934
Sep 20254713862.743.08$3,373
Aug 20255814963.933.01$4,157
Jul 20254810566.743.32$3,552
Jun 20255317566.483.13$4,071
May 2025526060.553.23$3,343
Apr 2025528062.363.54$3,526
Mar 20257911767.704.27$5,848
Feb 20258213670.884.34$6,403
Jan 20258015474.324.28$6,605
Dec 20241056768.993.12$7,453
Nov 20248611469.052.20$6,189
Oct 20248814171.372.28$6,602
Sep 20248413769.612.36$6,171
Aug 20249213175.632.06$7,228
Jul 2024939679.932.15$7,640
Jun 2024936478.082.63$7,430
May 202410012278.812.20$8,149
Apr 202494584.451.66$7,947
Mar 20241002280.301.55$8,064
Feb 202411111476.091.78$8,649
Jan 20249810073.023.30$7,486
Dec 20238610871.262.61$6,410
Nov 202310612777.892.81$8,613
Oct 2023793885.443.09$6,867
Sep 2023294689.042.74$2,708
Aug 2023376980.522.67$3,164
Jul 20234010474.852.64$3,269
Jun 2023393868.962.26$2,775
May 20234111470.622.23$3,149
Apr 20233411878.122.24$2,920
Mar 20233912672.852.39$3,143
Feb 2023408875.112.47$3,221
Jan 2023419276.533.39$3,449
Dec 2022398276.415.73$3,450
Nov 2022398085.005.65$3,767
Oct 2022373187.185.86$3,407
Sep 2022353484.888.16$3,248
Aug 20227715694.529.13$8,702
Jul 20223468101.587.54$3,967
Jun 20223470115.097.98$4,471
May 20222644109.378.43$3,215
Apr 20223144104.226.84$3,532
Mar 20223538108.885.08$4,004
Feb 2022313891.054.86$3,007
Jan 2022293881.844.54$2,546
Dec 2021315471.323.90$2,421
Nov 2021285577.435.24$2,456
Oct 2021295079.795.71$2,600
Sep 2021355569.865.35$2,739
Aug 2021348466.024.22$2,599
Jul 2021336470.783.98$2,591
Jun 2021335969.493.38$2,493
May 2021326363.483.02$2,221
Apr 2021335160.362.76$2,133
Mar 2021354661.302.72$2,270
Feb 2021336057.805.55$2,240
Jan 2021376050.412.81$2,034
Dec 2020356344.642.68$1,731
Nov 2020274638.772.71$1,171
Oct 2020274736.972.48$1,115
Sep 2020264737.091.99$1,058
Aug 2020274839.982.39$1,194
Jul 2020274938.371.83$1,125
Jun 2020264834.901.69$989
May 2020283816.921.81$543
Apr 2020285414.751.80$510
Mar 2020326230.341.86$1,086
Feb 2020315849.881.98$1,661
Jan 20203312157.252.09$2,143
Dec 201934059.012.30$2,006
Nov 20192912155.302.75$1,937
Oct 20192913153.472.42$1,867
Sep 2019299955.052.66$1,860
Aug 20192515453.112.30$1,683
Jul 20197210656.272.46$4,312
Jun 20195811352.782.49$3,343
May 20196011358.482.74$3,818
Apr 20197011562.632.75$4,700
Mar 20196410856.803.06$3,966
Feb 20196711450.852.79$3,725
Jan 20197413046.033.23$3,826
Dec 20187212846.594.19$3,890
Nov 20187011152.934.24$4,175
Oct 20186911961.443.40$4,644
Sep 20186210659.543.11$4,021
Aug 20186411759.403.07$4,160
Jul 20186311465.142.93$4,438
Jun 20186911960.183.08$4,519
May 201814932665.382.90$10,687
Apr 201813628363.842.90$9,503
Mar 201816935761.222.79$11,341
Feb 201815132661.782.77$10,231
Jan 201818735562.874.01$13,180
Dec 201716337857.272.92$10,439
Nov 201716637155.423.12$10,357
Oct 201712528249.292.98$7,003
Sep 2017448147.523.09$2,341
Aug 2017487745.373.00$2,409
Jul 201711921943.873.09$5,897
Jun 201718134442.493.09$8,753
May 201711520045.373.26$5,870
Apr 201716831247.933.21$9,054
Mar 201711618046.772.98$5,962
Feb 20179115650.452.95$5,052
Jan 20179817249.413.42$5,430
Dec 20169215948.763.72$5,078
Nov 20169717242.492.64$4,576
Oct 201614928346.193.09$7,757
Sep 20168916241.553.10$4,200
Aug 201612321141.442.92$5,714
Jul 201619934941.622.92$9,303
Jun 201619043145.352.69$9,774
May 201619837342.521.99$9,162
Apr 201621241836.561.99$8,583
Mar 201618337133.011.79$6,706
Feb 201612531626.472.06$3,961
Jan 201615542427.352.36$5,242
Dec 201522544532.362.00$8,172
Nov 20155231,13038.792.17$22,736
Oct 201546590643.552.43$22,449
Sep 20155251,02542.992.76$25,397
Aug 20155531,06040.162.87$25,253
Jul 20155881,07348.152.95$31,472
Jun 20155671,06956.152.88$34,919
May 20155741,23355.212.96$35,335
Apr 201558991849.822.71$31,829
Mar 20156281,02242.892.93$29,934
Feb 201553188144.662.98$26,336
Jan 201560489443.433.10$29,004
Dec 20146821,22554.693.59$41,698
Nov 20148891,06570.464.25$67,167
Oct 201490183578.303.90$73,806
Sep 201449248186.164.05$44,337
Aug 201474259289.394.04$68,716
Jul 201450361196.564.18$51,123
Jun 201437458998.164.74$39,502
May 201432566294.734.73$33,916
Apr 201426946995.944.81$28,063
Mar 201423751295.895.06$25,315
Feb 201415632497.406.19$17,201
Jan 201426739990.404.86$26,076
Dec 201318942591.824.35$19,205
Nov 201315565188.853.74$16,205
Oct 201316166497.423.78$18,194
Sep 2013226698104.113.72$26,124
Aug 2013275714104.253.52$31,184
Jul 2013265956102.523.72$30,722
Jun 20132431,03594.403.93$27,010
May 20132121,20994.834.15$25,120
Apr 201319086893.964.28$21,570
Mar 201311642393.623.91$12,515
Feb 201315532791.233.42$15,259
Jan 201321932291.603.42$21,162
Dec 201223031986.773.42$21,048
Nov 201223826286.953.62$21,644
Oct 20121951,11989.383.40$21,233
Sep 201217873594.672.92$18,996
Aug 201222152192.662.91$21,993
Jul 201246845785.133.02$41,221
Jun 201241324279.822.52$33,575
May 201241123191.612.49$38,227
Apr 2012883351101.652.00$90,458
Mar 2012759316105.052.22$80,435
Feb 20121,055350101.102.57$107,560
Jan 201284791798.092.73$85,589
Dec 201192085196.873.24$91,877
Nov 201132717795.723.31$31,887
Oct 201142320484.983.65$36,691
Sep 201156830383.623.99$48,704
Aug 201155015483.404.15$46,509
Jul 201152110294.144.52$49,508
Jun 20114023092.904.64$37,485
May 201151812898.134.40$51,395
Apr 201146397105.964.33$49,480
Mar 201165963896.364.06$66,090
Feb 201143651185.644.18$39,475
Jan 20116061,45886.504.59$59,109
Dec 201068251485.734.35$60,703
Nov 20101,6331,00480.843.80$135,822
Oct 20101,7851,10478.103.51$143,282
Sep 20102,4182,51072.633.98$185,608
Aug 201010712773.684.42$8,445
Jul 20108910472.554.74$6,950
Jun 2010583970.364.91$4,272
May 2010626271.124.24$4,672
Apr 2010759281.694.12$6,506
Mar 2010807578.394.39$6,600
Feb 2010478873.585.44$3,937
Jan 201003274.365.96$191
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 2009157072.544.11$11,389
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 2009146061.133.46$8,925
Jun 20090066.163.90$0
May 20091054.743.93$55
Apr 2009157046.773.59$7,343
Mar 20091042.144.06$42
Feb 20090032.814.63$0
Jan 2009168035.865.37$6,024
Dec 20080037.105.98$0
Nov 2008164055.496.86$9,100
Oct 20080075.246.92$0
Sep 20081550101.767.88$15,773
Aug 20081640114.228.48$18,732
Jul 20081700131.0811.39$22,284
Jun 200800131.3313.03$0
May 20081490123.1711.57$18,352
Apr 20081550110.3110.45$17,098
Mar 20081750101.909.66$17,833
Feb 2008157092.538.77$14,527
Jan 20080090.388.21$0
Dec 2007173088.337.30$15,281
Nov 20070091.677.29$0
Oct 2007170082.856.92$14,085
Sep 2007165075.846.24$12,514
Aug 2007166069.066.39$11,464
Jul 2007167070.906.39$11,840
Jun 2007163062.007.55$10,106
May 2007162058.747.85$9,516
Apr 20070059.617.81$0
Mar 2007166056.927.30$9,449
Feb 20070055.108.22$0
Jan 2007167050.306.73$8,400
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 2006164054.906.01$9,004
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 2006156069.376.34$10,822
Jun 20060066.286.38$0
May 2006168066.016.42$11,090
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 2006109057.597.75$6,277
Jan 2006173060.598.93$10,482
Dec 20050054.9413.42$0
Nov 2005169054.6910.59$9,243
Oct 2005173058.3413.80$10,093
Sep 2005173061.4512.08$10,631
Aug 2005170061.519.80$10,457
Jul 2005146055.697.84$8,131
Jun 2005169052.337.38$8,844
May 2005177045.226.65$8,004
Apr 20050049.207.36$0
Mar 2005172050.377.15$8,664
Feb 2005172045.226.31$7,778
Jan 2005165043.166.32$7,121
Dec 2004214039.866.75$8,530
Nov 2004167045.286.33$7,562
Oct 2004168049.706.52$8,350
Sep 2004168043.245.28$7,264
Aug 2004162042.375.55$6,864
Jul 2004165038.286.08$6,316
Jun 2004168036.106.43$6,065
May 2004169037.486.49$6,334
Apr 2004242034.475.86$8,342
Mar 2004167034.365.53$5,738
Feb 2004166032.455.51$5,387
Jan 2004185032.036.30$5,926
Dec 2003182030.266.30$5,507
Nov 2003145028.804.60$4,176
Oct 2003178028.174.76$5,014
Sep 2003170026.314.75$4,473
Aug 2003180029.765.13$5,357
Jul 2003163029.415.17$4,794
Jun 2003180028.565.98$5,141
May 2003181026.595.97$4,813
Apr 2003246026.675.41$6,561
Mar 2003149031.146.10$4,640
Feb 2003318033.487.93$10,647
Jan 2003165030.315.58$5,001
Dec 2002186026.914.85$5,005
Nov 2002174024.664.14$4,291
Oct 2002285026.464.23$7,541
Sep 2002180027.443.64$4,939
Aug 2002344025.963.16$8,930
Jul 2002181024.583.06$4,449
Jun 2002189023.733.34$4,485
May 2002349024.663.58$8,606
Apr 2002172023.653.51$4,068
Mar 2002177022.003.10$3,894
Feb 2002175018.222.38$3,189
Jan 2002354017.172.38$6,078
Dec 2001335016.932.36$5,672
Nov 2001216018.072.41$3,903
Oct 200118418119.782.53$4,097
Sep 2001175024.262.25$4,246
Aug 20010024.873.05$0
Jul 2001109023.933.20$2,608
Jun 2001165024.563.82$4,052
May 2001149025.524.31$3,802
Apr 2001272024.685.34$6,713
Mar 2001176024.545.38$4,319
Feb 2001341027.755.77$9,463
Jan 2001344027.478.40$9,450
Dec 2000179026.889.12$4,812
Nov 2000187032.215.66$6,023
Oct 2000185031.235.15$5,778
Sep 200080031.875.19$2,550
Aug 2000134029.644.54$3,972
Jul 200072028.534.09$2,054
Jun 2000183029.304.40$5,362
May 2000163027.263.68$4,443
Apr 2000181024.513.12$4,436
Mar 2000164028.422.86$4,661
Feb 200013911627.622.73$4,155
Jan 200011612425.272.48$3,239
Dec 199914812424.282.42$3,894
Nov 199910112023.192.43$2,634
Oct 19997212420.982.80$1,858
Sep 19999312021.752.62$2,337
Aug 19996412419.262.88$1,589
Jul 199915312417.892.37$3,031
Jun 199957415.942.36$918
May 19991241615.792.32$1,995
Apr 19992502215.102.21$3,824
Mar 19991854512.471.84$2,390
Feb 19992631599.981.82$2,914
Jan 19991681610.381.90$1,774
Dec 19982171769.201.77$2,309
Nov 19981819510.892.19$2,179
Oct 199827212712.421.97$3,628
Sep 199822616412.592.08$3,187
Aug 199830413911.301.91$3,700
Jul 199816311411.742.24$2,169
Jun 199832411411.242.24$3,897
May 199817419812.622.21$2,633
Apr 199818718813.042.51$2,909
Mar 199832119512.802.31$4,559
Feb 199816815513.952.30$2,700
Jan 199834317514.702.15$5,419
Dec 199718116716.322.41$3,357
Nov 199721718018.193.09$4,503
Oct 199736123019.253.15$7,674
Sep 19979322617.742.95$2,318
Aug 199723539617.862.55$5,209
Jul 199731223317.582.25$6,009
Jun 199711625517.242.26$2,575
May 199730126118.972.31$6,312
Apr 199729525417.882.08$5,804
Mar 199732425418.951.94$6,632
Feb 199717125920.492.21$4,075
Jan 199730327923.483.54$8,102
Dec 199632026523.32$7,462
Nov 199618023021.97$3,955
Oct 199628623223.31$6,667
Sep 199630424522.22$6,755
Aug 199635318520.26$7,152
Jul 199631523419.55$6,158
Jun 199615124118.73$2,828
May 199629624919.43$5,751
Apr 199635721221.51$7,679
Mar 199626321819.38$5,097
Feb 199628725616.98$4,873
Jan 199631328017.07$5,343
Dec 199528930617.19$4,968
Nov 199526929016.00$4,304
Oct 199531832015.43$4,907
Sep 199532332916.18$5,226
Aug 199532136215.92$5,110
Jul 199542737115.24$6,507
Jun 199534335616.41$5,629
May 199517629317.56$3,091
Apr 199534827417.73$6,170
Mar 199542927616.44$7,053
Feb 199517725216.58$2,935
Jan 199535827715.92$5,699
Dec 199433229115.03$4,990
Nov 199444228815.90$7,028
Oct 199419029915.58$2,960
Sep 199432727815.29$5,000
Aug 199443331616.13$6,984
Jul 199435735317.56$6,269
Jun 199421531017.09$3,674
May 199436631715.88$5,812
Apr 199443230414.14$6,108
Mar 199443531912.46$5,420
Feb 199419623812.50$2,450
Jan 199436627512.66$4,634
Dec 199344433212.33$5,475
Nov 199336134514.49$5,231
Oct 199325834015.85$4,089
Sep 199337633015.03$5,651
Aug 199336336315.66$5,685
Jul 199338435915.46$5,937
Jun 199333137616.79$5,557
May 199335743017.68$6,312
Apr 199333534518.05$6,047
Mar 199335534418.14$6,440
Feb 199336227117.90$6,480
Jan 199345729416.93$7,737

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                   45 bbl  × $106.41 =     $4,788
Casinghead gas       125 Mcf  × $  3.05 =       $381

────────────────────────────────────────────────────
Month total                                   $5,169

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/28532 is the state's own key, not one this site invented.