SHANKLE

Operated by FRIO OIL & GAS, LTD. (P-5 286618) in the PEARSALL (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13275District 01Field 69981125OilCasinghead gasSaveExport
Value, all time
$2.9 M
Jan 1993 – May 2026
Value, last 12 filed months
$93 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 1,992 leases and 3,388 wells, and the rule below applies to all of them.

Discovered
1936-12-28
as the register files it
Field class
Oil and gas
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 80 acres. The field rule took effect on 2025-06-17.

The Commission's schedule remark for this field reads: LEASE PLAT. PRORATION PLAT IS NOT REQUIRED.

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
OilDisposition60,304 bbl$2,859,727
Casinghead gasProduction18 Mcf$0
Total$2,859,727

18 Mcf of this lease's gas, across 18 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 28.7239, -99.1038. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.72390, -99.10383 · 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
6,715 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 6,715 ft.

Completions filed
Oct 1991
1 of 1 wells

1 well

42-16333100016,715 ftOct 1991

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 2026740106.413.05$7,874
Apr 2026152098.932.87$15,037
Mar 202680089.753.15$7,180
Feb 2026162063.503.75$10,287
Jan 202681059.138.00$4,790
Dec 2025236056.664.41$13,372
Nov 202577058.593.93$4,511
Oct 2025160059.383.30$9,501
Sep 2025161062.743.08$10,101
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 2025159066.483.13$10,570
May 202582060.553.23$4,965
Apr 202582062.363.54$5,114
Mar 2025164067.704.27$11,103
Feb 202578070.884.34$5,529
Jan 202580074.324.28$5,946
Dec 2024159068.993.12$10,969
Nov 202480069.052.20$5,524
Oct 2024161071.372.28$11,491
Sep 202479069.612.36$5,499
Aug 2024164075.632.06$12,403
Jul 202481079.932.15$6,474
Jun 2024166078.082.63$12,961
May 2024155078.812.20$12,216
Apr 202481084.451.66$6,840
Mar 2024177080.301.55$14,213
Feb 2024167076.091.78$12,707
Jan 2024155073.023.30$11,318
Dec 2023158071.262.61$11,259
Nov 2023159077.892.81$12,385
Oct 2023160085.443.09$13,670
Sep 2023165089.042.74$14,692
Aug 2023158080.522.67$12,722
Jul 2023242074.852.64$18,114
Jun 2023150068.962.26$10,344
May 2023160070.622.23$11,299
Apr 2023165078.122.24$12,890
Mar 2023164072.852.39$11,947
Feb 2023160075.112.47$12,018
Jan 2023242076.533.39$18,520
Dec 2022162076.415.73$12,378
Nov 2022244085.005.65$20,740
Oct 2022157087.185.86$13,687
Sep 2022328084.888.16$27,841
Aug 2022165094.529.13$15,596
Jul 2022820101.587.54$8,330
Jun 20221580115.097.98$18,184
May 202200109.378.43$0
Apr 20221600104.226.84$16,675
Mar 20223250108.885.08$35,386
Feb 2022235091.054.86$21,397
Jan 2022250081.844.54$20,460
Dec 2021337071.323.90$24,035
Nov 2021320077.435.24$24,778
Oct 2021415079.795.71$33,113
Sep 2021242069.865.35$16,906
Aug 2021410066.024.22$27,068
Jul 2021492070.783.98$34,824
Jun 2021247069.493.38$17,164
May 2021477063.483.02$30,280
Apr 2021483060.362.76$29,154
Mar 2021401061.302.72$24,581
Feb 2021164057.805.55$9,479
Jan 2021327050.412.81$16,484
Dec 2020502044.642.68$22,409
Nov 2020505038.772.71$19,579
Oct 2020422036.972.48$15,601
Sep 2020593037.091.99$21,994
Aug 2020639039.982.39$25,547
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 202087014.751.80$1,283
Mar 2020332030.341.86$10,073
Feb 2020497049.881.98$24,790
Jan 2020711057.252.09$40,705
Dec 2019772059.012.30$45,556
Nov 2019703055.302.75$38,876
Oct 2019673053.472.42$35,985
Sep 2019177055.052.66$9,744
Aug 2019684053.112.30$36,327
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 2018157061.222.79$9,612
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017160057.272.92$9,163
Nov 20170055.423.12$0
Oct 2017170049.292.98$8,379
Sep 20170047.523.09$0
Aug 2017148045.373.00$6,715
Jul 2017165043.873.09$7,239
Jun 2017110042.493.09$4,674
May 2017163045.373.26$7,395
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 2016133048.763.72$6,485
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 2016170026.472.06$4,500
Jan 20160027.352.36$0
Dec 2015162032.362.00$5,242
Nov 20150038.792.17$0
Oct 2015151043.552.43$6,576
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 2015170049.822.71$8,469
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 2015160043.433.10$6,949
Dec 2014165054.693.59$9,024
Nov 20140070.464.25$0
Oct 2014155078.303.90$12,137
Sep 20140086.164.05$0
Aug 2014168089.394.04$15,018
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 2014168095.944.81$16,118
Mar 20140095.895.06$0
Feb 2014161097.406.19$15,681
Jan 20140090.404.86$0
Dec 2013165091.824.35$15,150
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 20131680104.113.72$17,490
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 2013155094.403.93$14,632
May 20130094.834.15$0
Apr 2013175093.964.28$16,443
Mar 20130093.623.91$0
Feb 2013165091.233.42$15,053
Jan 20130091.603.42$0
Dec 2012173086.773.42$15,011
Nov 20120086.953.62$0
Oct 2012162089.383.40$14,480
Sep 2012165094.672.92$15,621
Aug 2012160092.662.91$14,826
Jul 20120085.133.02$0
Jun 2012155079.822.52$12,372
May 2012195091.612.49$17,864
Apr 20123640101.652.00$37,001
Mar 201200105.052.22$0
Feb 20121620101.102.57$16,378
Jan 20120098.092.73$0
Dec 2011157096.873.24$15,209
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 2011163083.404.15$13,594
Jul 2011156094.144.52$14,686
Jun 20110092.904.64$0
May 2011168098.134.40$16,486
Apr 20111600105.964.33$16,954
Mar 20110096.364.06$0
Feb 2011175085.644.18$14,987
Jan 2011198086.504.59$17,127
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 2010162072.633.98$11,766
Aug 20100073.684.42$0
Jul 2010155072.554.74$11,245
Jun 20100070.364.91$0
May 2010168071.124.24$11,948
Apr 20100081.694.12$0
Mar 2010175078.394.39$13,718
Feb 2010158073.585.44$11,626
Jan 20100074.365.96$0
Dec 2009188071.445.48$13,431
Nov 2009162074.593.75$12,084
Oct 20090072.544.11$0
Sep 2009163065.543.06$10,683
Aug 20090067.423.22$0
Jul 2009156061.133.46$9,536
Jun 2009155066.163.90$10,255
May 20090054.743.93$0
Apr 2009167046.773.59$7,811
Mar 2009165042.144.06$6,953
Feb 2009167032.814.63$5,479
Jan 2009165035.865.37$5,917
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 20081600101.767.88$16,282
Aug 20081420114.228.48$16,219
Jul 20081550131.0811.39$20,317
Jun 20081630131.3313.03$21,407
May 200800123.1711.57$0
Apr 20081620110.3110.45$17,870
Mar 20081620101.909.66$16,508
Feb 2008168092.538.77$15,545
Jan 20080090.388.21$0
Dec 2007144088.337.30$12,720
Nov 2007171091.677.29$15,676
Oct 2007169082.856.92$14,002
Sep 20070075.846.24$0
Aug 2007177069.066.39$12,224
Jul 2007172070.906.39$12,195
Jun 20070062.007.55$0
May 2007173058.747.85$10,162
Apr 2007173059.617.81$10,313
Mar 2007157056.927.30$8,936
Feb 2007161055.108.22$8,871
Jan 20070050.306.73$0
Dec 2006169056.656.92$9,574
Nov 2006162054.207.62$8,780
Oct 20060054.906.01$0
Sep 2006145060.085.04$8,712
Aug 2006152068.717.34$10,444
Jul 2006157069.376.34$10,891
Jun 2006167066.286.38$11,069
May 2006160066.016.42$10,562
Apr 2006159064.397.36$10,238
Mar 2006150056.707.08$8,505
Feb 2006154057.597.75$8,869
Jan 2006142060.598.93$8,604
Dec 2005150054.9413.42$8,241
Nov 2005166054.6910.59$9,079
Oct 20050058.3413.80$0
Sep 2005170061.4512.08$10,447
Aug 20050061.519.80$0
Jul 2005160055.697.84$8,910
Jun 2005164052.337.38$8,582
May 2005172045.226.65$7,778
Apr 2005167049.207.36$8,216
Mar 20050050.377.15$0
Feb 2005162045.226.31$7,326
Jan 2005162043.166.32$6,992
Dec 2004160039.866.75$6,378
Nov 2004159045.286.33$7,200
Oct 2004163049.706.52$8,101
Sep 2004162043.245.28$7,005
Aug 2004154042.375.55$6,525
Jul 20040038.286.08$0
Jun 2004160036.106.43$5,776
May 2004327037.486.49$12,256
Apr 20040034.475.86$0
Mar 2004163034.365.53$5,601
Feb 2004157032.455.51$5,095
Jan 2004323032.036.30$10,346
Dec 2003160030.266.30$4,842
Nov 2003162028.804.60$4,666
Oct 2003164028.174.76$4,620
Sep 20030026.314.75$0
Aug 2003146029.765.13$4,345
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 2003143026.595.97$3,802
Apr 2003276026.675.41$7,361
Mar 2003166031.146.10$5,169
Feb 2003168033.487.93$5,625
Jan 2003162030.315.58$4,910
Dec 2002303026.914.85$8,154
Nov 2002167024.664.14$4,118
Oct 2002322026.464.23$8,520
Sep 20020027.443.64$0
Aug 2002160025.963.16$4,154
Jul 2002164024.583.06$4,031
Jun 2002319023.733.34$7,570
May 2002327024.663.58$8,064
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 2002154017.172.38$2,644
Dec 2001161016.932.36$2,726
Nov 2001293018.072.41$5,295
Oct 2001156019.782.53$3,086
Sep 2001291024.262.25$7,060
Aug 2001159024.873.05$3,954
Jul 2001318023.933.20$7,610
Jun 2001163024.563.82$4,003
May 2001295025.524.31$7,528
Apr 2001301024.685.34$7,429
Mar 2001157024.545.38$3,853
Feb 2001281027.755.77$7,798
Jan 2001287027.478.40$7,884
Dec 2000296026.889.12$7,956
Nov 2000295032.215.66$9,502
Oct 2000296031.235.15$9,244
Sep 2000313031.875.19$9,975
Aug 2000317029.644.54$9,396
Jul 2000316028.534.09$9,015
Jun 2000301029.304.40$8,819
May 2000300027.263.68$8,178
Apr 2000398024.513.12$9,755
Mar 2000437028.422.86$12,420
Feb 2000472027.622.73$13,037
Jan 2000323025.272.48$8,162
Dec 1999481024.282.42$11,679
Nov 19990023.192.43$0
Oct 1999283020.982.80$5,937
Sep 1999820021.752.62$17,835
Aug 1999258019.262.88$4,969
Jul 1999662017.892.37$11,843
Jun 19990015.942.36$0
May 1999323015.792.32$5,100
Apr 1999793015.102.21$11,974
Mar 1999278012.471.84$3,467
Feb 199964709.981.82$6,457
Jan 1999670010.381.90$6,955
Dec 199849009.201.77$4,508
Nov 1998354010.892.19$3,855
Oct 1998343012.421.97$4,260
Sep 1998681012.592.08$8,574
Aug 1998527011.301.91$5,955
Jul 1998693011.742.24$8,136
Jun 1998361011.242.24$4,058
May 1998187012.622.21$2,360
Apr 19981,000013.042.51$13,040
Mar 1998184012.802.31$2,355
Feb 1998705013.952.30$9,835
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 19970019.253.15$0
Sep 19970017.742.95$0
Aug 19970017.862.55$0
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 19960023.32$0
Nov 19960021.97$0
Oct 19960023.31$0
Sep 19960022.22$0
Aug 19960020.26$0
Jul 19960019.55$0
Jun 19960018.73$0
May 19960019.43$0
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 19950116.44$0
Feb 19950116.58$0
Jan 19950115.92$0
Dec 19940015.03$0
Nov 19940115.90$0
Oct 19940015.58$0
Sep 19940115.29$0
Aug 19940016.13$0
Jul 19940117.56$0
Jun 19940017.09$0
May 19940015.88$0
Apr 19940114.14$0
Mar 1994161012.46$2,006
Feb 19940012.50$0
Jan 19940012.66$0
Dec 19930112.33$0
Nov 19931114.49$14
Oct 19939115.85$143
Sep 199380015.03$1,202
Aug 199347115.66$736
Jul 1993619115.46$9,570
Jun 1993343116.79$5,759
May 1993352117.68$6,223
Apr 1993334118.05$6,029
Mar 1993345118.14$6,258
Feb 1993528117.90$9,451
Jan 1993532116.93$9,007

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                   74 bbl  × $106.41 =     $7,874
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                   $7,874

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. 01/O/13275 is the state's own key, not one this site invented.