RIGGAN -A-

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 29012District 08Field 33176001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$4.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$42 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
OilDisposition92,367 bbl$4,559,730
Casinghead gasProduction59,721 Mcf$184,082
Total$4,743,812

7,927 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 32.2988, -102.6960. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.29899, -102.69620 · 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
20.0%
1 of 5 wells
With a plug date
20.0%
1 of 5 wells
Median depth
4,728 ft
5 wells filed one
Completion to plug
33.1 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
120.0%
A plug date is filed
120.0%
BothOn the schedule and plugged. Neither fact cancels the other.
120.0%
NeitherNo plug date, and not on the schedule.
480.0%

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 4,578 and 4,762 ft, median 4,728 ft, over the 5 wells that filed a depth.

Completions filed
Jun 1984 – Sep 2010
5 of 5 wells
Plug dates filed
Jul 2017
1 of 5 wells; 4 filed none

Last completion to plug: a median of 33.1 years across the 1 well that filed both dates, with the middle half between 33.1 years and 33.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

5 wells

42-0034169344,728 ftSep 2010
42-0034169234,762 ftAug 2010
42-0034169454,741 ftJul 2010
42-0033418124,591 ftJun 1984Jul 2017Yes
42-0033418014,578 ftJun 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 202657158106.413.05$6,547
Apr 20265315298.932.87$5,679
Mar 20264212389.753.15$4,157
Feb 2026298563.503.75$2,160
Jan 2026267459.138.00$2,129
Dec 2025307856.664.41$2,044
Nov 2025357258.593.93$2,333
Oct 2025398859.383.30$2,607
Sep 20254713962.743.08$3,376
Aug 20256216063.933.01$4,446
Jul 20256314466.743.32$4,682
Jun 2025289066.483.13$2,143
May 2025556460.553.23$3,537
Apr 2025466662.363.54$3,102
Mar 2025639067.704.27$4,649
Feb 20258513370.884.34$6,602
Jan 20258415174.324.28$6,889
Dec 2024706268.993.12$5,023
Nov 20245920769.052.20$4,529
Oct 20247030971.372.28$5,701
Sep 20246630069.612.36$5,304
Aug 20247328875.632.06$6,115
Jul 20247421179.932.15$6,368
Jun 20247414078.082.63$6,147
May 20247926878.812.20$6,815
Apr 2024741184.451.66$6,268
Mar 2024794980.301.55$6,419
Feb 20248824976.091.78$7,140
Jan 20249122873.023.30$7,397
Dec 20236923971.262.61$5,541
Nov 20238628577.892.81$7,499
Oct 20237610185.443.09$6,805
Sep 20237111089.042.74$6,623
Aug 20239216180.522.67$7,838
Jul 202310024874.852.64$8,140
Jun 2023877968.962.26$6,178
May 20238226170.622.23$6,372
Apr 20235814778.122.24$4,860
Mar 20233615772.852.39$2,998
Feb 2023378175.112.47$2,979
Jan 20237116076.533.39$5,976
Dec 20226814376.415.73$6,015
Nov 202211122685.005.65$10,711
Oct 20220087.185.86$0
Sep 2022615984.888.16$5,659
Aug 20226212694.529.13$7,010
Jul 202260119101.587.54$6,992
Jun 202260123115.097.98$7,887
May 202271107109.378.43$8,668
Apr 202276107104.226.84$8,652
Mar 202264104108.885.08$7,496
Feb 20225710491.054.86$5,695
Jan 20227810481.844.54$6,855
Dec 202111419771.323.90$8,899
Nov 202110820877.435.24$9,452
Oct 202111019079.795.71$9,863
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 2020010857.252.09$226
Dec 20190059.012.30$0
Nov 2019010855.302.75$297
Oct 20194211853.472.42$2,531
Sep 2019428955.052.66$2,549
Aug 20193613853.112.30$2,230
Jul 2019549556.272.46$3,272
Jun 20195110152.782.49$2,943
May 20195210158.482.74$3,318
Apr 20195910362.632.75$3,978
Mar 2019559856.803.06$3,424
Feb 20195710050.852.79$3,178
Jan 20196311546.033.23$3,271
Dec 20186211546.594.19$3,370
Nov 2018609952.934.24$3,595
Oct 20186010761.443.40$4,050
Sep 20185710059.543.11$3,705
Aug 2018578859.403.07$3,656
Jul 2018567765.142.93$3,874
Jun 20187011260.183.08$4,557
May 20188416365.382.90$5,965
Apr 20188716663.842.90$6,036
Mar 20188916761.222.79$5,914
Feb 20187915361.782.77$5,304
Jan 20189716662.874.01$6,764
Dec 20178417557.272.92$5,322
Nov 20178617055.423.12$5,296
Oct 20178215849.292.98$4,513
Sep 20177312447.523.09$3,852
Aug 20177412245.373.00$3,724
Jul 20179615643.873.09$4,693
Jun 20179815942.493.09$4,655
May 20179715945.373.26$4,920
Apr 20179716347.933.21$5,173
Mar 20178014046.772.98$4,159
Feb 20176713050.452.95$3,764
Jan 20177514649.413.42$4,205
Dec 20167514048.763.72$4,178
Nov 20166712742.492.64$3,183
Oct 20165810646.193.09$3,007
Sep 2016549941.553.10$2,551
Aug 20165710041.442.92$2,655
Jul 20167212541.622.92$3,362
Jun 20167015845.352.69$3,599
May 20167414042.521.99$3,425
Apr 20167614536.561.99$3,067
Mar 20169821233.011.79$3,615
Feb 201610728426.472.06$3,418
Jan 201611931527.352.36$3,999
Dec 201512027232.362.00$4,428
Nov 201512928938.792.17$5,630
Oct 201512517843.552.43$5,876
Sep 201510718842.992.76$5,119
Aug 201513120340.162.87$5,844
Jul 201511020348.152.95$5,894
Jun 201511021256.152.88$6,788
May 201510932055.212.96$6,964
Apr 201510727749.822.71$6,080
Mar 201511631742.892.93$5,906
Feb 201510927744.662.98$5,692
Jan 201514728943.433.10$7,280
Dec 201415436854.693.59$9,744
Nov 201417432970.464.25$13,659
Oct 20149718078.303.90$8,297
Sep 201412829586.164.05$12,222
Aug 201412833589.394.04$12,794
Jul 201413429296.564.18$14,159
Jun 201413629398.164.74$14,738
May 201410332994.734.73$11,312
Apr 20148926895.944.81$9,828
Mar 20140095.895.06$0
Feb 201461297.406.19$659
Jan 2014465290.404.86$4,411
Dec 201311626491.824.35$11,801
Nov 201314833888.853.74$14,413
Oct 201313927797.423.78$14,588
Sep 2013115289104.113.72$13,047
Aug 2013115271104.253.52$12,943
Jul 2013106386102.523.72$12,302
Jun 20139938794.403.93$10,868
May 20135249094.834.15$6,964
Apr 20139168893.964.28$11,497
Mar 20136528093.623.91$7,181
Feb 2013524491.233.42$4,894
Jan 2013884391.603.42$8,208
Dec 20121134386.773.42$9,952
Nov 20121153486.953.62$10,123
Oct 201219216489.383.40$17,719
Sep 201219913494.672.92$19,230
Aug 201216812492.662.91$15,927
Jul 201212911785.133.02$11,335
Jun 201214710179.822.52$11,988
May 201216223191.612.49$15,416
Apr 2012230274101.652.00$23,927
Mar 2012282256105.052.22$30,193
Feb 2012318316101.102.57$32,962
Jan 201247465998.092.73$48,296
Dec 201145173096.873.24$46,053
Nov 201149566795.723.31$49,590
Oct 201187482384.983.65$77,275
Sep 201185059183.623.99$73,433
Aug 201190957083.404.15$78,176
Jul 201186444394.144.52$83,338
Jun 201166218692.904.64$62,363
May 20111,03360698.134.40$104,038
Apr 2011697327105.964.33$75,271
Mar 20111,0611,73396.364.06$109,269
Feb 20118221,25485.644.18$75,638
Jan 20111,0963,40686.504.59$110,433
Dec 20101,9601,97585.734.35$176,618
Nov 20102,5631,32680.843.80$212,226
Oct 20102,5021,54678.103.51$200,831
Sep 20103,2872,43172.633.98$248,409
Aug 20101,0981,36073.684.42$86,911
Jul 201094072.554.74$6,820
Jun 20101157870.364.91$8,474
May 2010939471.124.24$7,012
Apr 201010913481.694.12$9,457
Mar 201015614678.394.39$12,870
Feb 201064073.585.44$4,709
Jan 20100474.365.96$24
Dec 20090071.445.48$0
Nov 2009166074.593.75$12,382
Oct 20090072.544.11$0
Sep 2009173065.543.06$11,338
Aug 2009171067.423.22$11,529
Jul 2009163061.133.46$9,964
Jun 2009170066.163.90$11,247
May 2009329054.743.93$18,009
Apr 20090046.773.59$0
Mar 2009156042.144.06$6,574
Feb 2009168032.814.63$5,512
Jan 2009165035.865.37$5,917
Dec 2008169037.105.98$6,270
Nov 2008164055.496.86$9,100
Oct 2008320075.246.92$24,077
Sep 20081660101.767.88$16,892
Aug 20081590114.228.48$18,161
Jul 20081660131.0811.39$21,759
Jun 20083280131.3313.03$43,076
May 20081560123.1711.57$19,215
Apr 20081560110.3110.45$17,208
Mar 20084950101.909.66$50,441
Feb 20080092.538.77$0
Jan 2008159090.388.21$14,370
Dec 2007154088.337.30$13,603
Nov 2007163091.677.29$14,942
Oct 2007327082.856.92$27,092
Sep 2007169075.846.24$12,817
Aug 2007165069.066.39$11,395
Jul 2007333070.906.39$23,610
Jun 2007159062.007.55$9,858
May 2007353058.747.85$20,735
Apr 2007166059.617.81$9,895
Mar 2007333056.927.30$18,954
Feb 20070055.108.22$0
Jan 2007170050.306.73$8,551
Dec 2006168056.656.92$9,517
Nov 2006327054.207.62$17,723
Oct 2006160054.906.01$8,784
Sep 2006167060.085.04$10,033
Aug 2006335068.717.34$23,018
Jul 2006162069.376.34$11,238
Jun 2006322066.286.38$21,342
May 2006169066.016.42$11,156
Apr 2006331064.397.36$21,313
Mar 2006170056.707.08$9,639
Feb 2006236057.597.75$13,591
Jan 2006168060.598.93$10,179
Dec 2005339054.9413.42$18,625
Nov 2005168054.6910.59$9,188
Oct 2005164058.3413.80$9,568
Sep 2005172061.4512.08$10,569
Aug 2005330061.519.80$20,298
Jul 2005165055.697.84$9,189
Jun 2005336052.337.38$17,583
May 2005171045.226.65$7,733
Apr 2005324049.207.36$15,941
Mar 2005170050.377.15$8,563
Feb 2005338045.226.31$15,284
Jan 2005341043.166.32$14,718
Dec 2004164039.866.75$6,537
Nov 2004335045.286.33$15,169
Oct 2004169049.706.52$8,399
Sep 2004336043.245.28$14,529
Aug 2004171042.375.55$7,245
Jul 2004163038.286.08$6,240
Jun 2004349036.106.43$12,599
May 2004165037.486.49$6,184
Apr 2004286034.475.86$9,858
Mar 2004178034.365.53$6,116
Feb 2004360032.455.51$11,682
Jan 2004175032.036.30$5,605
Dec 2003165030.266.30$4,993
Nov 2003218028.804.60$6,278
Oct 2003329028.174.76$9,268
Sep 2003173026.314.75$4,552
Aug 2003179029.765.13$5,327
Jul 2003352029.415.17$10,352
Jun 2003165028.565.98$4,712
May 2003186026.595.97$4,946
Apr 2003274026.675.41$7,308
Mar 2003219031.146.10$6,820
Feb 2003175033.487.93$5,859
Jan 2003346030.315.58$10,487
Dec 2002353026.914.85$9,499
Nov 2002176024.664.14$4,340
Oct 2002280026.464.23$7,409
Sep 2002176027.443.64$4,829
Aug 2002364025.963.16$9,449
Jul 2002184024.583.06$4,523
Jun 2002174023.733.34$4,129
May 2002351024.663.58$8,656
Apr 2002175023.653.51$4,139
Mar 2002179022.003.10$3,938
Feb 2002173018.222.38$3,152
Jan 2002181017.172.38$3,108
Dec 20010016.932.36$0
Nov 2001299018.072.41$5,403
Oct 2001181019.782.53$3,580
Sep 2001360024.262.25$8,734
Aug 2001181024.873.05$4,501
Jul 2001248023.933.20$5,935
Jun 2001189024.563.82$4,642
May 2001354025.524.31$9,034
Apr 2001266024.685.34$6,565
Mar 2001337024.545.38$8,270
Feb 20010027.755.77$0
Jan 2001359027.478.40$9,862
Dec 2000175026.889.12$4,704
Nov 2000338032.215.66$10,887
Oct 2000169031.235.15$5,278
Sep 2000278031.875.19$8,860
Aug 2000221029.644.54$6,550
Jul 2000262028.534.09$7,475
Jun 2000185029.304.40$5,421
May 2000355027.263.68$9,677
Apr 2000338224.513.12$8,291
Mar 2000192728.422.86$5,477
Feb 2000372427.622.73$10,286
Jan 2000343925.272.48$8,690
Dec 1999356724.282.42$8,661
Nov 19992682623.192.43$6,278
Oct 19992381120.982.80$5,024
Sep 19992661321.752.62$5,820
Aug 1999307719.262.88$5,933
Jul 19993442817.892.37$6,221
Jun 19993012715.942.36$4,862
May 199934414615.792.32$5,771
Apr 19992809115.102.21$4,429
Mar 199933613312.471.84$4,434
Feb 19993071429.981.82$3,322
Jan 199934814510.381.90$3,888
Dec 19983011469.201.77$3,028
Nov 199832112110.892.19$3,760
Oct 199838113312.421.97$4,994
Sep 199833215112.592.08$4,494
Aug 199837214011.301.91$4,471
Jul 199836412511.742.24$4,553
Jun 199833815711.242.24$4,150
May 199834417912.622.21$4,736
Apr 199834113113.042.51$4,775
Mar 199834516412.802.31$4,795
Feb 199835714013.952.30$5,302
Jan 199833616414.702.15$5,293
Dec 199735516716.322.41$6,196
Nov 199733916218.193.09$6,667
Oct 199733016819.253.15$6,882
Sep 199735816117.742.95$6,827
Aug 199745428817.862.55$8,844
Jul 199732417417.582.25$6,087
Jun 199737717017.242.26$6,883
May 199735717418.972.31$7,174
Apr 199736417617.882.08$6,875
Mar 199735817418.951.94$7,122
Feb 199733816420.492.21$7,287
Jan 199735617423.483.54$8,975
Dec 199633819723.32$7,882
Nov 199634817321.97$7,646
Oct 199640619523.31$9,464
Sep 199637117522.22$8,244
Aug 19963595320.26$7,273
Jul 19963633619.55$7,097
Jun 199635219018.73$6,593
May 199640127119.43$7,791
Apr 199635824221.51$7,701
Mar 199643415219.38$8,411
Feb 199640517116.98$6,877
Jan 199636120817.07$6,162
Dec 199543224217.19$7,426
Nov 199546327716.00$7,408
Oct 199552828615.43$8,147
Sep 199536023816.18$5,825
Aug 199548723515.92$7,753
Jul 199544512415.24$6,782
Jun 199554510516.41$8,943
May 199536312917.56$6,374
Apr 199536111317.73$6,401
Mar 199531514516.44$5,179
Feb 199534714016.58$5,753
Jan 199535011115.92$5,572
Dec 199431512215.03$4,734
Nov 199443912015.90$6,980
Oct 199433011415.58$5,141
Sep 199436111415.29$5,520
Aug 199436811816.13$5,936
Jul 199436610817.56$6,427
Jun 19943099617.09$5,281
May 19943689515.88$5,844
Apr 199441617814.14$5,882
Mar 199430035412.46$3,738
Feb 199435532312.50$4,438
Jan 199437636012.66$4,760
Dec 199330739412.33$3,785
Nov 199337519714.49$5,434
Oct 19934688615.85$7,418
Sep 19933666215.03$5,501
Aug 19933702915.66$5,794
Jul 19933668815.46$5,658
Jun 19933629316.79$6,078
May 199335811717.68$6,329
Apr 199336319018.05$6,552
Mar 199336510018.14$6,621
Feb 199336912817.90$6,605
Jan 199344613316.93$7,551

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                   57 bbl  × $106.41 =     $6,065
Casinghead gas       158 Mcf  × $  3.05 =       $481

────────────────────────────────────────────────────
Month total                                   $6,547

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/29012 is the state's own key, not one this site invented.