CHILSON SHALLOW

Operated by SWANNER PROPERTIES (P-5 831660) in the WICHITA COUNTY REGULAR field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12801District 09Field 97155001OilCasinghead gasSaveExport
Value, all time
$497 k
Jan 1993 – May 2026
Value, last 12 filed months
$10 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 1,994 leases and 19,278 wells, and the rule below applies to all of them.

Discovered
1910-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
OilDisposition21,531 bbl$496,979
Casinghead gasProduction21 Mcf$0
Total$496,979

21 Mcf of this lease's gas, across 21 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 (38)

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 33.8560, -98.6818. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.5 miles.

33.85573, -98.68301 · 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
94.7%
36 of 38 wells
With a plug date
94.7%
36 of 38 wells
Median depth
800 ft
37 wells filed one
Completion to plug
17.6 years
median over 11 wells

What the state filed about each well

On the RRC proration schedule
3694.7%
A plug date is filed
3694.7%
BothOn the schedule and plugged. Neither fact cancels the other.
3694.7%
NeitherNo plug date, and not on the schedule.
25.3%

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

Total depth in feet, 37 of 38 wells. Median 800 ft, with the middle half between 767 and 1,869 ft; the shallowest is 571 ft and the deepest 1,935 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 13 of 38 wells, May 1983 – Nov 2012. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
May 1983 – Nov 2012
13 of 38 wells; 25 filed none
Plug dates filed
Sep 1979 – Nov 2012
36 of 38 wells; 2 filed none

Last completion to plug: a median of 17.6 years across the 11 wells that filed both dates, with the middle half between 14.3 years and 22.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

38 wells

42-4850165016767 ftJan 1994Yes
42-485023276775 ftNov 1990Yes
42-4850502551,299 ftMar 2002Yes
42-4850502812767 ftNov 2000Yes
42-4850502913767 ftOct 2000Yes
42-4850503014767 ftOct 2000Yes
42-4850504024767 ftNov 2000Yes
42-4850504125767 ftNov 2000Yes
42-485051403800 ftMar 2002Yes
42-485894407767 ftOct 1987Yes
42-485894418780 ftJan 1984Yes
42-485894429778 ftOct 1987Yes
42-4858944310Jan 1984Yes
42-4858944411787 ftNov 1990Yes
42-4858944917571 ftOct 1979Yes
42-4858945018767 ftOct 1979Yes
42-4858945119760 ftNov 1980Yes
42-4858945220767 ftOct 1979Yes
42-4858945321757 ftSep 1979Yes
42-4858945422755 ftSep 1979Yes
42-4858945523767 ftJan 1984Yes
42-48589458271,869 ftMar 1986Yes
42-48589459281,845 ftSep 2011Yes
42-48589460291,847 ftNov 1983Yes
42-48589461301,855 ftNov 1983Yes
42-48542998421,890 ftNov 2012
42-48543164441,866 ftMar 1996Jan 2006Yes
42-48542999411,871 ftNov 1995Nov 2012Yes
42-48543165431,880 ftNov 1995Sep 2001Yes
42-4854167239861 ftJun 1988Oct 2000Yes
42-4854167338861 ftJun 1988Jan 2006Yes
42-48541669371,272 ftJun 1988Jan 2006Yes
42-48540677321,920 ftFeb 1986Oct 2005Yes
42-48540733361,890 ftJan 1986Feb 2002Yes
42-48540676351,890 ftDec 1985
42-48539468331,892 ftApr 1984Jun 2009Yes
42-48539467341,872 ftApr 1984Jun 2009Yes
42-48538563311,935 ftMay 1983Sep 2011Yes

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 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 2025164062.743.08$10,289
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 2023170089.042.74$15,137
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 2022159076.415.73$12,149
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 2021163070.783.98$11,537
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 2020166038.371.83$6,369
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 20200057.252.09$0
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 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 2019180056.803.06$10,224
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 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 2017162046.772.98$7,577
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
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 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 2015173056.152.88$9,714
May 20150055.212.96$0
Apr 2015155049.822.71$7,722
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 2013157094.403.93$14,821
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
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 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
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 20080055.496.86$0
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 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
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 20070069.066.39$0
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 2006180056.656.92$10,197
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 2006175069.376.34$12,140
Jun 20060066.286.38$0
May 2006174066.016.42$11,486
Apr 20060064.397.36$0
Mar 2006178056.707.08$10,093
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 2004174045.286.33$7,879
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 200442034.475.86$1,448
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 2003178029.415.17$5,235
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 2003170030.315.58$5,153
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 2002182024.583.06$4,474
Jun 20020023.733.34$0
May 2002139024.663.58$3,428
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 2001125016.932.36$2,116
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 2001154024.262.25$3,736
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 2001129025.524.31$3,292
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 2001183027.755.77$5,078
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 20000031.875.19$0
Aug 2000185029.644.54$5,483
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 2000182027.263.68$4,961
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 2000183027.622.73$5,054
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 1999183023.192.43$4,244
Oct 1999183020.982.80$3,839
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 1999188017.892.37$3,363
Jun 19990015.942.36$0
May 1999170015.792.32$2,684
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 199818809.201.77$1,730
Nov 1998187010.892.19$2,036
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 1998183011.742.24$2,148
Jun 1998181011.242.24$2,034
May 1998187012.622.21$2,360
Apr 1998182013.042.51$2,373
Mar 1998189012.802.31$2,419
Feb 19980013.952.30$0
Jan 1998486014.702.15$7,144
Dec 19970016.322.41$0
Nov 1997190018.193.09$3,456
Oct 1997191019.253.15$3,677
Sep 1997187017.742.95$3,317
Aug 1997351017.862.55$6,269
Jul 1997180017.582.25$3,164
Jun 1997368017.242.26$6,344
May 1997189018.972.31$3,585
Apr 1997181017.882.08$3,236
Mar 1997379018.951.94$7,182
Feb 1997190020.492.21$3,893
Jan 1997186023.483.54$4,367
Dec 1996373023.32$8,698
Nov 1996187021.97$4,108
Oct 1996185023.31$4,312
Sep 1996186022.22$4,133
Aug 1996289020.26$5,855
Jul 1996180019.55$3,519
Jun 1996369018.73$6,911
May 1996185019.43$3,595
Apr 1996373021.51$8,023
Mar 1996186019.38$3,605
Feb 1996184016.98$3,124
Jan 1996376017.07$6,418
Dec 1995186017.19$3,197
Nov 1995191016.00$3,056
Oct 1995187015.43$2,885
Sep 1995374016.18$6,051
Aug 1995176015.92$2,802
Jul 1995166015.24$2,530
Jun 1995532016.41$8,730
May 19950017.56$0
Apr 1995349017.73$6,188
Mar 1995352016.44$5,787
Feb 1995176016.58$2,918
Jan 1995362015.92$5,763
Dec 1994176015.03$2,645
Nov 1994347015.90$5,517
Oct 1994354015.58$5,515
Sep 1994178115.29$2,722
Aug 1994186116.13$3,000
Jul 1994189117.56$3,319
Jun 1994370117.09$6,323
May 1994187115.88$2,970
Apr 1994182114.14$2,573
Mar 1994186112.46$2,318
Feb 1994381112.50$4,763
Jan 1994189112.66$2,393
Dec 1993190112.33$2,343
Nov 1993187114.49$2,710
Oct 1993372115.85$5,896
Sep 1993183115.03$2,750
Aug 1993186115.66$2,913
Jul 1993372115.46$5,751
Jun 1993188116.79$3,157
May 1993371117.68$6,559
Apr 1993188118.05$3,393
Mar 1993380118.14$6,893
Feb 1993190117.90$3,401
Jan 1993194116.93$3,284

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.

Sep 2025 — as filed, then multipliedworked
Oil                  164 bbl  × $ 62.74 =    $10,289
Casinghead gas         0 Mcf  × $  3.08 =         $0

────────────────────────────────────────────────────
Month total                                  $10,289

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/12801 is the state's own key, not one this site invented.