SENKEL

Operated by KARPER OIL & GAS CORPORATION (P-5 451280) in the LANGSTON-KLEINER (STRAWN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 23651District 09Field 51982332NGPA filingOilCasinghead gasSaveExport
Value, all time
$3.2 M
Jan 1993 – May 2026
Value, last 12 filed months
$131 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 58 leases and 183 wells, and the rule below applies to all of them.

Discovered
1950-11-30
as the register files it
Field class
Oil
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres.

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
OilDisposition46,034 bbl$3,167,231
Casinghead gasProduction5,205 Mcf$13,508
Total$3,180,738

735 Mcf of this lease's gas, across 5 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 (3)

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 33.2855, -98.5644. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

33.28551, -98.56477 · 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
66.7%
2 of 3 wells
With a plug date
66.7%
2 of 3 wells
Median depth
3,530 ft
3 wells filed one
Completion to plug
16.5 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
266.7%
A plug date is filed
266.7%
BothOn the schedule and plugged. Neither fact cancels the other.
266.7%
NeitherNo plug date, and not on the schedule.
133.3%

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 890 and 3,566 ft, median 3,530 ft, over the 3 wells that filed a depth.

Completions filed
Sep 1983 – Jun 1994
3 of 3 wells
Plug dates filed
Jul 1994 – Aug 2016
2 of 3 wells; 1 filed none

Last completion to plug: a median of 16.5 years across the 2 wells that filed both dates, with the middle half between 13.6 years and 19.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells

42-503381685890 ftJun 1994Aug 2016Yes
42-5033766923,566 ftOct 1983Jul 1994Yes
42-5033767213,530 ftSep 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 202600106.413.05$0
Apr 20260098.932.87$0
Mar 2026170089.753.15$15,258
Feb 2026343063.503.75$21,781
Jan 20260059.138.00$0
Dec 2025170056.664.41$9,632
Nov 2025171058.593.93$10,019
Oct 2025342059.383.30$20,308
Sep 2025331062.743.08$20,767
Aug 2025170063.933.01$10,868
Jul 2025332066.743.32$22,158
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 2025165067.704.27$11,171
Feb 2025172070.884.34$12,191
Jan 2025173074.324.28$12,857
Dec 2024169068.993.12$11,659
Nov 20240069.052.20$0
Oct 2024168071.372.28$11,990
Sep 2024330069.612.36$22,971
Aug 2024340075.632.06$25,714
Jul 2024340079.932.15$27,176
Jun 2024497078.082.63$38,806
May 2024339078.812.20$26,717
Apr 2024509084.451.66$42,985
Mar 20240080.301.55$0
Feb 2024517076.091.78$39,339
Jan 2024514073.023.30$37,532
Dec 2023885071.262.61$63,065
Nov 2023537077.892.81$41,827
Oct 2023525085.443.09$44,856
Sep 2023364089.042.74$32,411
Aug 2023544080.522.67$43,803
Jul 2023539074.852.64$40,344
Jun 2023538068.962.26$37,100
May 2023350070.622.23$24,717
Apr 2023188078.122.24$14,687
Mar 2023352072.852.39$25,643
Feb 2023357075.112.47$26,814
Jan 2023344076.533.39$26,326
Dec 2022343076.415.73$26,209
Nov 2022519085.005.65$44,115
Oct 2022352087.185.86$30,687
Sep 2022359084.888.16$30,472
Aug 2022361094.529.13$34,122
Jul 20223600101.587.54$36,569
Jun 20225250115.097.98$60,422
May 20221730109.378.43$18,921
Apr 20223510104.226.84$36,581
Mar 20221800108.885.08$19,598
Feb 2022180091.054.86$16,389
Jan 2022354081.844.54$28,971
Dec 2021180071.323.90$12,838
Nov 2021173077.435.24$13,395
Oct 2021357079.795.71$28,485
Sep 2021350069.865.35$24,451
Aug 2021178066.024.22$11,752
Jul 2021177070.783.98$12,528
Jun 2021184069.493.38$12,786
May 2021170063.483.02$10,792
Apr 2021180060.362.76$10,865
Mar 20210061.302.72$0
Feb 2021180057.805.55$10,404
Jan 2021181050.412.81$9,124
Dec 2020183044.642.68$8,169
Nov 2020339038.772.71$13,143
Oct 2020178036.972.48$6,581
Sep 20200037.091.99$0
Aug 2020353039.982.39$14,113
Jul 2020174038.371.83$6,676
Jun 2020174034.901.69$6,073
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020175030.341.86$5,310
Feb 20200049.881.98$0
Jan 2020169057.252.09$9,675
Dec 2019351059.012.30$20,713
Nov 20190055.302.75$0
Oct 2019164053.472.42$8,769
Sep 2019163055.052.66$8,973
Aug 20190053.112.30$0
Jul 2019164056.272.46$9,228
Jun 2019165052.782.49$8,709
May 2019170058.482.74$9,942
Apr 2019171062.632.75$10,710
Mar 20190056.803.06$0
Feb 2019175050.852.79$8,899
Jan 2019169046.033.23$7,779
Dec 20180046.594.19$0
Nov 2018166052.934.24$8,786
Oct 2018168061.443.40$10,322
Sep 20180059.543.11$0
Aug 2018167059.403.07$9,920
Jul 2018165065.142.93$10,748
Jun 20180060.183.08$0
May 2018166065.382.90$10,853
Apr 2018166063.842.90$10,597
Mar 2018163061.222.79$9,979
Feb 20180061.782.77$0
Jan 2018172062.874.01$10,814
Dec 2017168057.272.92$9,621
Nov 2017167055.423.12$9,255
Oct 2017170049.292.98$8,379
Sep 20170047.523.09$0
Aug 2017163045.373.00$7,395
Jul 2017170043.873.09$7,458
Jun 2017167042.493.09$7,096
May 2017169045.373.26$7,668
Apr 20170047.933.21$0
Mar 2017165046.772.98$7,717
Feb 2017169050.452.95$8,526
Jan 20170049.413.42$0
Dec 2016166048.763.72$8,094
Nov 2016168042.492.64$7,138
Oct 2016166046.193.09$7,668
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 2016169041.622.92$7,034
Jun 20160045.352.69$0
May 2016166042.521.99$7,058
Apr 2016168036.561.99$6,142
Mar 2016164033.011.79$5,414
Feb 2016171026.472.06$4,526
Jan 2016162027.352.36$4,431
Dec 2015172032.362.00$5,566
Nov 2015172038.792.17$6,672
Oct 2015338043.552.43$14,720
Sep 2015174042.992.76$7,480
Aug 2015165040.162.87$6,626
Jul 2015175048.152.95$8,426
Jun 20150056.152.88$0
May 2015176055.212.96$9,717
Apr 2015165049.822.71$8,220
Mar 2015168042.892.93$7,206
Feb 20150044.662.98$0
Jan 2015169043.433.10$7,340
Dec 20140054.693.59$0
Nov 2014177070.464.25$12,471
Oct 2014172078.303.90$13,468
Sep 2014169086.164.05$14,561
Aug 2014171089.394.04$15,286
Jul 2014163096.564.18$15,739
Jun 2014166098.164.74$16,295
May 2014166094.734.73$15,725
Apr 2014173095.944.81$16,598
Mar 2014169095.895.06$16,205
Feb 2014172097.406.19$16,753
Jan 2014180090.404.86$16,272
Dec 2013166091.824.35$15,242
Nov 2013162088.853.74$14,394
Oct 2013164097.423.78$15,977
Sep 20133400104.113.72$35,397
Aug 20131750104.253.52$18,244
Jul 20131690102.523.72$17,326
Jun 2013171094.403.93$16,142
May 20130094.834.15$0
Apr 2013171093.964.28$16,067
Mar 2013168093.623.91$15,728
Feb 2013175091.233.42$15,965
Jan 2013178091.603.42$16,305
Dec 2012172086.773.42$14,924
Nov 2012167086.953.62$14,521
Oct 2012174089.383.40$15,552
Sep 2012172094.672.92$16,283
Aug 2012178092.662.91$16,493
Jul 2012172085.133.02$14,642
Jun 2012177079.822.52$14,128
May 2012173091.612.49$15,849
Apr 201200101.652.00$0
Mar 20121760105.052.22$18,489
Feb 20123550101.102.57$35,891
Jan 2012173098.092.73$16,970
Dec 2011174096.873.24$16,855
Nov 2011346095.723.31$33,119
Oct 20110084.983.65$0
Sep 2011177083.623.99$14,801
Aug 2011175083.404.15$14,595
Jul 2011338094.144.52$31,819
Jun 2011171092.904.64$15,886
May 2011346098.134.40$33,953
Apr 20113450105.964.33$36,556
Mar 2011337096.364.06$32,473
Feb 2011167085.644.18$14,302
Jan 2011174086.504.59$15,051
Dec 2010358085.734.35$30,691
Nov 2010520080.843.80$42,037
Oct 2010355078.103.51$27,726
Sep 2010538072.633.98$39,075
Aug 2010503073.684.42$37,061
Jul 2010502072.554.74$36,420
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 2010171074.365.96$12,716
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 2009167072.544.11$12,114
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 2008168055.496.86$9,322
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 20081790123.1711.57$22,047
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 2008180092.538.77$16,655
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 2007184069.066.39$12,707
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 2006155060.085.04$9,312
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 2006175066.286.38$11,599
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 2005160054.6910.59$8,750
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 2005181061.519.80$11,133
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 2005184045.226.65$8,320
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 2005184043.166.32$7,941
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 2004180042.375.55$7,627
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 2004180034.365.53$6,185
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 2003178028.804.60$5,126
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 2003173029.765.13$5,148
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 2003178026.675.41$4,747
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 2003181030.315.58$5,486
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 2002175025.963.16$4,543
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 2002180023.653.51$4,257
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 2001181016.932.36$3,064
Nov 20010018.072.41$0
Oct 2001175019.782.53$3,462
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 2001183024.545.38$4,491
Feb 20010027.755.77$0
Jan 2001181027.478.40$4,972
Dec 200005726.889.12$520
Nov 200017814532.215.66$6,554
Oct 2000021231.235.15$1,091
Sep 200017612031.875.19$6,232
Aug 2000171029.644.54$5,068
Jul 200036029928.534.09$11,494
Jun 200017331629.304.40$6,458
May 2000180027.263.68$4,907
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 199901223.192.43$29
Oct 1999011620.982.80$325
Sep 199902721.752.62$71
Aug 199909319.262.88$267
Jul 1999013917.892.37$330
Jun 1999011515.942.36$272
May 199903715.792.32$86
Apr 199907715.102.21$170
Mar 1999012512.471.84$230
Feb 199901429.981.82$258
Jan 1999011410.381.90$217
Dec 19980589.201.77$103
Nov 1998011210.892.19$245
Oct 1998013112.421.97$258
Sep 199807412.592.08$154
Aug 19980211.301.91$4
Jul 199802311.742.24$51
Jun 199809911.242.24$221
May 1998013912.622.21$307
Apr 1998015213.042.51$381
Mar 199809612.802.31$222
Feb 1998010513.952.30$241
Jan 1998010014.702.15$215
Dec 1997010716.322.41$258
Nov 1997011518.193.09$355
Oct 1997010619.253.15$334
Sep 1997012117.742.95$358
Aug 1997012417.862.55$317
Jul 19970017.582.25$0
Jun 1997011917.242.26$269
May 1997012018.972.31$277
Apr 199716314217.882.08$3,210
Mar 19971778518.951.94$3,519
Feb 199709720.492.21$214
Jan 199709723.483.54$343
Dec 1996011023.32$0
Nov 199617815221.97$3,911
Oct 19960023.31$0
Sep 199618115022.22$4,022
Aug 199617520020.26$3,546
Jul 1996212319.55$39
Jun 1996176018.73$3,296
May 1996175019.43$3,400
Apr 19960021.51$0
Mar 19960019.38$0
Feb 19960016.98$0
Jan 19960017.07$0
Dec 19950017.19$0
Nov 19950016.00$0
Oct 19950015.43$0
Sep 19950016.18$0
Aug 19950015.92$0
Jul 19950015.24$0
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950016.44$0
Feb 19950016.58$0
Jan 19950015.92$0
Dec 19940015.03$0
Nov 19940015.90$0
Oct 19940015.58$0
Sep 19940015.29$0
Aug 19940016.13$0
Jul 19940017.56$0
Jun 19940017.09$0
May 19940015.88$0
Apr 19940014.14$0
Mar 19940012.46$0
Feb 19940012.50$0
Jan 19940012.66$0
Dec 19930012.33$0
Nov 19930014.49$0
Oct 19930015.85$0
Sep 19930015.03$0
Aug 19930015.66$0
Jul 19930015.46$0
Jun 19930016.79$0
May 19930017.68$0
Apr 19930018.05$0
Mar 19930018.14$0
Feb 19930017.90$0
Jan 19930016.93$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.

Mar 2026 — as filed, then multipliedworked
Oil                  170 bbl  × $ 89.75 =    $15,258
Casinghead gas         0 Mcf  × $  3.15 =         $0

────────────────────────────────────────────────────
Month total                                  $15,258

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. 09/O/23651 is the state's own key, not one this site invented.