KOEHLER, FRANK -C-

Operated by CASTILLO OIL COMPANY LLC (P-5 139634) in the LULING-BRANYON field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 3531District 01Field 55679001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$997 k
Jan 1993 – May 2026
Value, last 12 filed months
$21 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 507 leases and 2,955 wells, and the rule below applies to all of them.

Discovered
1922-08-08
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
150 ft
minimum

A drilling unit in this field needs at least 2 acres. The field rule took effect on 2018-06-19.

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: CORRELATIVE INTERVAL 1620' - 2164'

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
OilDisposition19,178 bbl$996,569
Casinghead gasProduction29 Mcf$0
Total$996,569

29 Mcf of this lease's gas, across 29 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 (4)

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 29.8254, -97.6028. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.1 miles.

29.82545, -97.60281 · 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 4 wells
With a plug date
0.0%
0 of 4 wells
Median depth
no depth filed
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.
4100.0%

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.

4 wells

42-055015981
42-055015993
42-055016007
42-055016018

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 20260089.753.15$0
Feb 2026166063.503.75$10,541
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 2025165062.743.08$10,352
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 2025151060.553.23$9,143
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 2025166070.884.34$11,766
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 2024167069.612.36$11,625
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 2024163078.812.20$12,846
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 2024180073.023.30$13,144
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 2023167080.522.67$13,447
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 2023163078.122.24$12,734
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 2023157076.533.39$12,015
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 2022159084.888.16$13,496
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 20221560109.378.43$17,062
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 2022160091.054.86$14,568
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 2021151077.435.24$11,692
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 2021158069.493.38$10,979
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 2020158038.772.71$6,126
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 2020167038.371.83$6,408
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020144030.341.86$4,369
Feb 20200049.881.98$0
Jan 2020166057.252.09$9,504
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 2019158056.272.46$8,891
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 2019164050.852.79$8,339
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 2018159061.443.40$9,769
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 2018166060.183.08$9,990
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 2018165061.782.77$10,194
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 2017159047.523.09$7,556
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 2017156045.373.26$7,078
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 2017170049.413.42$8,400
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 2016158046.193.09$7,298
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 2016158036.561.99$5,776
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 2016171027.352.36$4,677
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 2015164043.552.43$7,142
Sep 20150042.992.76$0
Aug 2015159040.162.87$6,385
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 2015162055.212.96$8,944
Apr 20150049.822.71$0
Mar 2015163042.892.93$6,991
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 2014165054.693.59$9,024
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 2014162089.394.04$14,481
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 2014159094.734.73$15,062
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 2014161097.406.19$15,681
Jan 20140090.404.86$0
Dec 2013168091.824.35$15,426
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 20131640104.113.72$17,074
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 2013166094.834.15$15,742
Apr 20130093.964.28$0
Mar 2013165093.623.91$15,447
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 2012166086.773.42$14,404
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 2012165094.672.92$15,621
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 2012162079.822.52$12,931
May 20120091.612.49$0
Apr 20121620101.652.00$16,467
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 2012165098.092.73$16,185
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 2011163084.983.65$13,852
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 2011166094.144.52$15,627
Jun 20110092.904.64$0
May 2011164098.134.40$16,093
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 2011166085.644.18$14,216
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 2010150080.843.80$12,126
Oct 20100078.103.51$0
Sep 2010166072.633.98$12,057
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 2010166070.364.91$11,680
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 2010168078.394.39$13,170
Feb 20100073.585.44$0
Jan 2010170074.365.96$12,641
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 2009155065.543.06$10,159
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009166066.163.90$10,983
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 2009165042.144.06$6,953
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 2008169055.496.86$9,378
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 20081650114.228.48$18,846
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 20081610110.3110.45$17,760
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 2007170088.337.30$15,016
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 2007164069.066.39$11,326
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007178058.747.85$10,456
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 2007171050.306.73$8,601
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 2006178060.085.04$10,694
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 2006169066.286.38$11,201
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 2006179057.597.75$10,309
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 2005176054.6910.59$9,625
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 2005153052.337.38$8,006
May 20050045.226.65$0
Apr 2005176049.207.36$8,659
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 2005171043.166.32$7,380
Dec 20040039.866.75$0
Nov 2004164045.286.33$7,426
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 2004161042.375.55$6,822
Jul 20040038.286.08$0
Jun 2004169036.106.43$6,101
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 2004169034.365.53$5,807
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 2003174030.266.30$5,265
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 2003164026.314.75$4,315
Aug 20030029.765.13$0
Jul 2003163029.415.17$4,794
Jun 20030028.565.98$0
May 2003162026.595.97$4,308
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 2003169033.487.93$5,658
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 2002174024.664.14$4,291
Oct 20020026.464.23$0
Sep 2002167027.443.64$4,582
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 2002144023.733.34$3,417
May 20020024.663.58$0
Apr 2002160023.653.51$3,784
Mar 20020022.003.10$0
Feb 200246018.222.38$838
Jan 2002166017.172.38$2,850
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 2001134019.782.53$2,651
Sep 20010024.262.25$0
Aug 2001169024.873.05$4,203
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 2001134025.524.31$3,420
Apr 20010024.685.34$0
Mar 2001170024.545.38$4,172
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 2000157026.889.12$4,220
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 2000151031.875.19$4,812
Aug 20000029.644.54$0
Jul 2000147028.534.09$4,194
Jun 20000029.304.40$0
May 2000166027.263.68$4,525
Apr 20000024.513.12$0
Mar 2000168028.422.86$4,775
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 1999181024.282.42$4,395
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 1999180021.752.62$3,915
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 1999158015.942.36$2,519
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 1999172012.471.84$2,145
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 1998156010.892.19$1,699
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 1998102011.301.91$1,153
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 1998117012.622.21$1,477
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 1998159013.952.30$2,218
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 199793019.253.15$1,790
Sep 199782017.742.95$1,455
Aug 19970017.862.55$0
Jul 1997138017.582.25$2,426
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 199774017.882.08$1,323
Mar 19970018.951.94$0
Feb 1997156020.492.21$3,196
Jan 19970023.483.54$0
Dec 19960023.32$0
Nov 199678021.97$1,714
Oct 1996150023.31$3,497
Sep 19960022.22$0
Aug 19960020.26$0
Jul 1996104019.55$2,033
Jun 19960018.73$0
May 1996127019.43$2,468
Apr 19960021.51$0
Mar 1996167019.38$3,236
Feb 19960016.98$0
Jan 19960017.07$0
Dec 199547017.19$808
Nov 19950016.00$0
Oct 199562015.43$957
Sep 1995125016.18$2,023
Aug 19950015.92$0
Jul 199548115.24$732
Jun 1995132116.41$2,166
May 19950117.56$0
Apr 1995125117.73$2,216
Mar 19950116.44$0
Feb 199528116.58$464
Jan 19950115.92$0
Dec 19940115.03$0
Nov 199456115.90$890
Oct 19940115.58$0
Sep 19940115.29$0
Aug 19940116.13$0
Jul 199474117.56$1,299
Jun 19940117.09$0
May 19940115.88$0
Apr 19940114.14$0
Mar 199415112.46$187
Feb 19940012.50$0
Jan 19940012.66$0
Dec 1993169112.33$2,084
Nov 19930114.49$0
Oct 19930115.85$0
Sep 19930115.03$0
Aug 19930115.66$0
Jul 19930115.46$0
Jun 19930116.79$0
May 1993184117.68$3,253
Apr 19930118.05$0
Mar 19930118.14$0
Feb 19930117.90$0
Jan 19930116.93$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 2026 — as filed, then multipliedworked
Oil                  166 bbl  × $ 63.50 =    $10,541
Casinghead gas         0 Mcf  × $  3.75 =         $0

────────────────────────────────────────────────────
Month total                                  $10,541

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/3531 is the state's own key, not one this site invented.