CORNELL KNIGHT

Operated by MANTI TARKA PERMIAN OP, LLC (P-5 524907) in the GREASEWOOD (SILURO-DEVONIAN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Gas lease lease 86641District 08Field 36579500Hydrogen sulphide fieldNGPA filingGasSaveExport
Value, all time
$79.9 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
401
no gaps in the span
Streams
1
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 19 leases and 19 wells, and the rule below applies to all of them.

Discovered
1968-09-22
as the register files it
Field class
Gas
the register's own label
Between wells
3,735 ft
minimum
From a lease line
1,320 ft
minimum

A drilling unit in this field needs at least 640 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: ALLOCATION FORMULA ADMINISTRSTIVELY SUSPENDED 3/1/94

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
NGPA1none

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
GasProduction23,214,601 Mcf$79,891,041
Total$79,891,041

5,811,719 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 (1)

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 31.5438, -103.6132. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.54378, -103.61315 · 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 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
16,460 ft
1 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.
1100.0%

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

The one well that filed a depth was drilled to 16,460 ft.

Completions filed
Oct 1990
1 of 1 wells

1 well

42-389310481A16,460 ftOct 1990

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 20260106.413.05$0
Apr 2026098.932.87$0
Mar 2026089.753.15$0
Feb 2026063.503.75$0
Jan 2026059.138.00$0
Dec 2025056.664.41$0
Nov 2025058.593.93$0
Oct 2025059.383.30$0
Sep 2025062.743.08$0
Aug 2025063.933.01$0
Jul 2025066.743.32$0
Jun 2025066.483.13$0
May 2025060.553.23$0
Apr 2025062.363.54$0
Mar 2025067.704.27$0
Feb 2025070.884.34$0
Jan 2025074.324.28$0
Dec 2024068.993.12$0
Nov 2024069.052.20$0
Oct 2024071.372.28$0
Sep 2024069.612.36$0
Aug 2024075.632.06$0
Jul 2024079.932.15$0
Jun 2024078.082.63$0
May 2024078.812.20$0
Apr 2024084.451.66$0
Mar 2024080.301.55$0
Feb 202420,87576.091.78$37,233
Jan 202410,34573.023.30$34,114
Dec 2023071.262.61$0
Nov 2023077.892.81$0
Oct 202314,36985.443.09$44,361
Sep 20239,17889.042.74$25,102
Aug 202336280.522.67$968
Jul 202336,84374.852.64$97,332
Jun 202359,25068.962.26$133,815
May 202394070.622.23$2,094
Apr 202311,85378.122.24$26,524
Mar 202345,34872.852.39$108,525
Feb 202349,85275.112.47$122,919
Jan 20231,02876.533.39$3,483
Dec 202221,40976.415.73$122,654
Nov 202256,28785.005.65$317,808
Oct 202225687.185.86$1,501
Sep 202257,46084.888.16$469,085
Aug 20222,39794.529.13$21,878
Jul 202262,977101.587.54$474,978
Jun 20220115.097.98$0
May 202244,225109.378.43$372,951
Apr 202255,231104.226.84$377,647
Mar 202214108.885.08$71
Feb 202221,09691.054.86$102,502
Jan 202211,51281.844.54$52,238
Dec 2021071.323.90$0
Nov 2021077.435.24$0
Oct 202114,51779.795.71$82,948
Sep 202135,37869.865.35$189,305
Aug 202116,53366.024.22$69,779
Jul 2021070.783.98$0
Jun 2021069.493.38$0
May 20217,73763.483.02$23,348
Apr 2021060.362.76$0
Mar 202118861.302.72$511
Feb 2021057.805.55$0
Jan 20214,07550.412.81$11,452
Dec 202043,89944.642.68$117,450
Nov 202051,76338.772.71$140,100
Oct 20201236.972.48$30
Sep 2020037.091.99$0
Aug 202039,55839.982.39$94,350
Jul 202030,61938.371.83$55,883
Jun 2020734.901.69$12
May 202057,02416.921.81$103,484
Apr 202013,17914.751.80$23,780
Mar 202016,83530.341.86$31,250
Feb 20201449.881.98$28
Jan 20204,23957.252.09$8,880
Dec 201947,02259.012.30$108,356
Nov 201937,93355.302.75$104,342
Oct 20193,45353.472.42$8,351
Sep 201931,55555.052.66$83,850
Aug 201930,76053.112.30$70,882
Jul 20192,61756.272.46$6,438
Jun 2019052.782.49$0
May 20195,20058.482.74$14,250
Apr 2019062.632.75$0
Mar 20191656.803.06$49
Feb 2019350.852.79$8
Jan 20193,01546.033.23$9,733
Dec 201841,96346.594.19$175,634
Nov 2018452.934.24$17
Oct 20181,70261.443.40$5,784
Sep 2018059.543.11$0
Aug 201831,12659.403.07$95,450
Jul 201833,69365.142.93$98,784
Jun 201832,10960.183.08$98,797
May 201837,01365.382.90$107,367
Apr 201845,90563.842.90$133,161
Mar 201829,69361.222.79$82,750
Feb 20183561.782.77$97
Jan 20185,96662.874.01$23,920
Dec 201732,99757.272.92$96,401
Nov 201733,43155.423.12$104,250
Oct 201742,88449.292.98$127,952
Sep 201739,64947.523.09$122,408
Aug 201718845.373.00$565
Jul 2017043.873.09$0
Jun 2017042.493.09$0
May 201723,47745.373.26$76,615
Apr 201732,79247.933.21$105,315
Mar 201735,90746.772.98$107,135
Feb 201732,64350.452.95$96,382
Jan 201734,10849.413.42$116,608
Dec 201635,11448.763.72$130,723
Nov 201636,03942.492.64$95,300
Oct 201643,82346.193.09$135,424
Sep 201650,29241.553.10$155,937
Aug 201615,81741.442.92$46,254
Jul 2016041.622.92$0
Jun 2016045.352.69$0
May 201610,90342.521.99$21,708
Apr 201633,60436.561.99$66,907
Mar 201635,75933.011.79$64,152
Feb 201634,19126.472.06$70,558
Jan 201640,43927.352.36$95,612
Dec 201545,91132.362.00$91,887
Nov 201540,01138.792.17$86,717
Oct 2015043.552.43$0
Sep 2015042.992.76$0
Aug 201527,31540.162.87$78,462
Jul 201532,86048.152.95$96,775
Jun 201538,72156.152.88$111,627
May 201542,47355.212.96$125,527
Apr 201514,45249.822.71$39,115
Mar 201572942.892.93$2,139
Feb 2015044.662.98$0
Jan 20152,34643.433.10$7,274
Dec 201438,38854.693.59$137,865
Nov 201437,79870.464.25$160,711
Oct 201441,59978.303.90$162,276
Sep 201447,78386.164.05$193,303
Aug 201452,84989.394.04$213,252
Jul 20144,10596.564.18$17,157
Jun 2014098.164.74$0
May 2014094.734.73$0
Apr 20149,12095.944.81$43,859
Mar 201435,23995.895.06$178,197
Feb 201433,63597.406.19$208,268
Jan 201437,99490.404.86$184,678
Dec 201337,16691.824.35$161,839
Nov 201341,23688.853.74$154,152
Oct 201355,37397.423.78$209,275
Sep 20138,173104.113.72$30,385
Aug 20130104.253.52$0
Jul 201333,034102.523.72$122,812
Jun 201340,01494.403.93$157,391
May 201343,47694.834.15$180,385
Apr 201351,05393.964.28$218,639
Mar 201341,70793.623.91$163,194
Feb 20133,25291.233.42$11,122
Jan 2013091.603.42$0
Dec 2012086.773.42$0
Nov 2012086.953.62$0
Oct 201247889.383.40$1,625
Sep 201233,10994.672.92$96,625
Aug 201233,85092.662.91$98,441
Jul 201232,45285.133.02$98,031
Jun 201228,47779.822.52$71,735
May 201223,05891.612.49$57,376
Apr 201230,294101.652.00$60,491
Mar 201232,561105.052.22$72,353
Feb 201232,070101.102.57$82,428
Jan 201232,69298.092.73$89,383
Dec 201134,64696.873.24$112,244
Nov 201141,97695.723.31$138,994
Oct 201148,41584.983.65$176,644
Sep 20113,77583.623.99$15,046
Aug 2011083.404.15$0
Jul 201117,05894.144.52$77,055
Jun 201137,90192.904.64$175,856
May 201139,02698.134.40$171,903
Apr 201142,793105.964.33$185,434
Mar 201136,78596.364.06$149,249
Feb 201141,72085.644.18$174,389
Jan 201153,66786.504.59$246,266
Dec 201050,85685.734.35$221,109
Nov 2010080.843.80$0
Oct 20105,62178.103.51$19,723
Sep 201046,43672.633.98$184,791
Aug 201055,06673.684.42$243,356
Jul 201058,75472.554.74$278,288
Jun 2010070.364.91$0
May 201048,22371.124.24$204,235
Apr 201019,66981.694.12$81,089
Mar 2010078.394.39$0
Feb 20103473.585.44$185
Jan 2010074.365.96$0
Dec 2009071.445.48$0
Nov 200922,43574.593.75$84,165
Oct 200941,75572.544.11$171,623
Sep 200942,49465.543.06$130,233
Aug 200948,67867.423.22$156,670
Jul 200949,40961.133.46$171,177
Jun 200949,94366.163.90$194,528
May 200953,32354.743.93$209,333
Apr 200952,28746.773.59$187,580
Mar 200955,71442.144.06$226,143
Feb 200951,30732.814.63$237,705
Jan 200970,64135.865.37$379,413
Dec 200829,20037.105.98$174,532
Nov 200835,22755.496.86$241,670
Oct 200868,65275.246.92$475,208
Sep 200865101.767.88$512
Aug 20085,625114.228.48$47,717
Jul 200858,228131.0811.39$663,184
Jun 200862,040131.3313.03$808,544
May 200862,939123.1711.57$728,474
Apr 200869,050110.3110.45$721,908
Mar 200883,497101.909.66$806,921
Feb 200883,27292.538.77$730,344
Jan 20084,67790.388.21$38,378
Dec 200785,88288.337.30$627,108
Nov 200787,37891.677.29$637,134
Oct 200726,85882.856.92$185,911
Sep 200784,70575.846.24$528,912
Aug 200787,85469.066.39$561,206
Jul 200761,79070.906.39$394,711
Jun 200791,04062.007.55$687,211
May 200758,70458.747.85$460,608
Apr 2007059.617.81$0
Mar 200788,16356.927.30$643,764
Feb 200740,88655.108.22$335,919
Jan 200785,45350.306.73$574,830
Dec 200690,35456.656.92$625,109
Nov 200630,38654.207.62$231,465
Oct 200689,00154.906.01$535,234
Sep 200688,66060.085.04$446,598
Aug 200682,69268.717.34$606,953
Jul 200630,18269.376.34$191,437
Jun 200688,97866.286.38$568,025
May 200695,15466.016.42$611,364
Apr 200694,51064.397.36$695,639
Mar 200625,87356.707.08$183,256
Feb 200686,98257.597.75$674,208
Jan 200697,75160.598.93$873,241
Dec 200599,00054.9413.42$1,328,125
Nov 200599,50454.6910.59$1,053,588
Oct 200563,64958.3413.80$878,086
Sep 200590,13661.4512.08$1,088,753
Aug 2005101,59761.519.80$995,330
Jul 200599,68955.697.84$781,925
Jun 2005104,18452.337.38$768,986
May 200571,59045.226.65$476,157
Apr 200598,90349.207.36$727,974
Mar 2005104,50750.377.15$747,735
Feb 200593,12745.226.31$587,810
Jan 200577,11143.166.32$487,511
Dec 20048,07339.866.75$54,501
Nov 200471,08145.286.33$449,973
Oct 200487,47949.706.52$569,934
Sep 200488,82843.245.28$469,358
Aug 200495,32242.375.55$529,100
Jul 200497,70638.286.08$594,461
Jun 200497,35836.106.43$626,306
May 2004102,55337.486.49$666,039
Apr 200497,62034.475.86$571,903
Mar 2004102,20034.365.53$565,180
Feb 200499,22232.455.51$546,676
Jan 200449,13432.036.30$309,527
Dec 2003108,83430.266.30$685,833
Nov 2003101,47628.804.60$466,298
Oct 200371,55428.174.76$340,571
Sep 2003110,64326.314.75$525,483
Aug 2003115,36929.765.13$591,811
Jul 200395,54829.415.17$494,063
Jun 2003112,69828.565.98$674,268
May 200367,13426.595.97$400,970
Apr 2003103,66426.675.41$560,540
Mar 2003116,59031.146.10$710,737
Feb 2003110,95733.487.93$879,432
Jan 200312,73030.315.58$71,059
Dec 2002106,45926.914.85$516,726
Nov 2002108,58024.664.14$449,191
Oct 200287,75426.464.23$371,122
Sep 200249,78827.443.64$180,989
Aug 2002116,50925.963.16$368,653
Jul 2002135,19824.583.06$413,944
Jun 2002132,83323.733.34$443,428
May 200248,45024.663.58$173,645
Apr 200242823.653.51$1,503
Mar 200286,70322.003.10$269,015
Feb 2002120,01018.222.38$285,105
Jan 2002139,80017.172.38$332,120
Dec 200128,28616.932.36$66,879
Nov 200122,89518.072.41$55,074
Oct 200183,90719.782.53$212,191
Sep 200177,86424.262.25$175,297
Aug 200171,99624.873.05$219,815
Jul 200190,78123.933.20$290,234
Jun 2001102,61424.563.82$392,412
May 2001114,08225.524.31$491,388
Apr 2001110,55724.685.34$589,857
Mar 2001117,44924.545.38$631,458
Feb 2001112,23827.755.77$647,286
Jan 2001134,66727.478.40$1,131,036
Dec 2000142,14926.889.12$1,296,754
Nov 2000143,21032.215.66$810,282
Oct 2000103,59131.235.15$533,027
Sep 200033,33331.875.19$172,882
Aug 2000142,86029.644.54$648,692
Jul 2000148,85328.534.09$608,772
Jun 2000121,08029.304.40$532,419
May 2000147,49627.263.68$542,748
Apr 2000124,26824.513.12$387,219
Mar 200083,92928.422.86$240,016
Feb 200013,43527.622.73$36,631
Jan 200048,30625.272.48$119,823
Dec 1999124,58724.282.42$301,964
Nov 199982,76123.192.43$201,439
Oct 199942,77720.982.80$119,934
Sep 199942,15921.752.62$110,408
Aug 199950,13219.262.88$144,160
Jul 199962,63817.892.37$148,601
Jun 199976,68715.942.36$181,142
May 1999105,66515.792.32$245,251
Apr 1999115,67915.102.21$255,425
Mar 1999131,76412.471.84$242,226
Feb 1999142,9719.981.82$259,891
Jan 1999154,68910.381.90$293,901
Dec 199881,5189.201.77$144,558
Nov 199891,34910.892.19$199,663
Oct 199895,95112.421.97$188,948
Sep 1998103,03012.592.08$214,572
Aug 1998116,28111.301.91$221,789
Jul 1998123,94711.742.24$277,303
Jun 1998120,33711.242.24$269,226
May 1998123,67612.622.21$272,871
Apr 1998109,79013.042.51$275,060
Mar 1998117,00812.802.31$270,223
Feb 1998104,10413.952.30$239,349
Jan 1998119,95414.702.15$258,476
Dec 1997124,29816.322.41$299,695
Nov 1997121,25618.193.09$374,470
Oct 1997134,11419.253.15$422,435
Sep 1997127,09517.742.95$375,550
Aug 1997134,01817.862.55$342,381
Jul 1997138,22817.582.25$310,590
Jun 1997130,08017.242.26$293,617
May 1997138,02218.972.31$318,624
Apr 1997137,35617.882.08$286,082
Mar 1997139,33018.951.94$270,180
Feb 1997124,68820.492.21$275,049
Jan 1997143,32323.483.54$507,320
Dec 1996138,08223.32$0
Nov 1996132,00621.97$0
Oct 1996133,94223.31$0
Sep 1996127,72322.22$0
Aug 1996128,31720.26$0
Jul 1996128,46519.55$0
Jun 1996121,07918.73$0
May 1996126,59119.43$0
Apr 1996124,56721.51$0
Mar 1996128,76419.38$0
Feb 1996122,87516.98$0
Jan 1996132,42717.07$0
Dec 1995130,81217.19$0
Nov 1995116,90716.00$0
Oct 1995143,30715.43$0
Sep 1995130,14116.18$0
Aug 1995131,52815.92$0
Jul 1995130,28215.24$0
Jun 1995118,31316.41$0
May 1995126,19717.56$0
Apr 1995123,21317.73$0
Mar 1995117,47616.44$0
Feb 1995113,87816.58$0
Jan 1995124,80915.92$0
Dec 1994116,96015.03$0
Nov 1994114,02115.90$0
Oct 1994126,29315.58$0
Sep 1994122,33615.29$0
Aug 1994123,18516.13$0
Jul 1994119,70917.56$0
Jun 1994117,10617.09$0
May 1994101,46215.88$0
Apr 1994115,97114.14$0
Mar 1994120,76512.46$0
Feb 1994112,01112.50$0
Jan 1994110,80112.66$0
Dec 1993113,86212.33$0
Nov 1993115,19414.49$0
Oct 1993116,19115.85$0
Sep 199396,97315.03$0
Aug 1993104,88315.66$0
Jul 1993112,25415.46$0
Jun 1993113,57016.79$0
May 1993121,29117.68$0
Apr 1993119,94918.05$0
Mar 1993121,57218.14$0
Feb 1993109,41317.90$0
Jan 1993114,24616.93$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.

Feb 2024 — as filed, then multipliedworked
Gas               20,875 Mcf  × $  1.78 =    $37,233

────────────────────────────────────────────────────
Month total                                  $37,233

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/G/86641 is the state's own key, not one this site invented.