KIEFER, CHESTER

Operated by S-RESOURCES, LLC (P-5 103620) in the WINDMILL CREEK (ESCONDIDO) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 9351District 01Field 97934200OilCasinghead gasSaveExport
Value, all time
$4.0 M
Jan 1993 – May 2026
Value, last 12 filed months
$148 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 leases and 17 wells, and the rule below applies to all of them.

Discovered
1983-12-12
as the register files it
Field class
Oil
the register's own label
Between wells
100 ft
minimum
From a lease line
50 ft
minimum

A drilling unit in this field needs at least 0.5 acres. The field rule took effect on 2012-08-07.

The Commission's schedule remark for this field reads: FOR LAST WELL ON LEASE. ACREAGE PRORATION PLATS 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
OilDisposition61,148 bbl$4,006,415
Casinghead gasProduction81 Mcf$78
Total$4,006,493

48 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 (17)

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 29.0095, -99.9389. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

29.00923, -99.93851 · 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
5.9%
1 of 17 wells
With a plug date
5.9%
1 of 17 wells
Median depth
800 ft
17 wells filed one
Completion to plug
31.9 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
15.9%
A plug date is filed
15.9%
BothOn the schedule and plugged. Neither fact cancels the other.
15.9%
NeitherNo plug date, and not on the schedule.
1694.1%

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, 17 of 17 wells. Median 800 ft, with the middle half between 773 and 831 ft; the shallowest is 739 ft and the deepest 902 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, 16 of 17 wells, Oct 1983 – Nov 2025. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1983 – Nov 2025
16 of 17 wells; 1 filed none
Plug dates filed
Sep 2015
1 of 17 wells; 16 filed none

Last completion to plug: a median of 31.9 years across the 1 well that filed both dates, with the middle half between 31.9 years and 31.9 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

17 wells

42-507320906805 ft
42-5073356242800 ftNov 2025
42-5073356541783 ftNov 2025
42-5073303739778 ftOct 2013
42-5073292435770 ftNov 2012
42-5073292534749 ftNov 2012
42-5073290224850 ftOct 2012
42-5073278923850 ftSep 2012
42-5073285436773 ftApr 2012
42-5073284333752 ftJan 2012
42-5073284232739 ftNov 2011
42-5073277022831 ftJan 2011
42-5073276421811 ftDec 2010
42-507321207821 ftMay 1985
42-507320205781 ftApr 1984
42-507320194851 ftApr 1984
42-507319843902 ftOct 1983Sep 2015Yes

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 2026123098.932.87$12,168
Mar 2026255089.753.15$22,886
Feb 202693063.503.75$5,906
Jan 2026131059.138.00$7,746
Dec 2025279056.664.41$15,808
Nov 2025136058.593.93$7,968
Oct 2025570059.383.30$33,847
Sep 2025136062.743.08$8,533
Aug 2025143063.933.01$9,142
Jul 20250066.743.32$0
Jun 2025368066.483.13$24,465
May 20250060.553.23$0
Apr 2025275062.363.54$17,149
Mar 2025214067.704.27$14,488
Feb 2025269070.884.34$19,067
Jan 20250074.324.28$0
Dec 2024142068.993.12$9,797
Nov 20240069.052.20$0
Oct 2024259071.372.28$18,485
Sep 2024135069.612.36$9,397
Aug 2024278075.632.06$21,025
Jul 2024227079.932.15$18,144
Jun 2024134078.082.63$10,463
May 2024278078.812.20$21,909
Apr 2024138084.451.66$11,654
Mar 2024132080.301.55$10,600
Feb 2024556076.091.78$42,306
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 2023302089.042.74$26,890
Aug 20230080.522.67$0
Jul 2023433074.852.64$32,410
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 2023129078.122.24$10,077
Mar 2023154072.852.39$11,219
Feb 2023147075.112.47$11,041
Jan 2023143076.533.39$10,944
Dec 2022109076.415.73$8,329
Nov 2022286085.005.65$24,310
Oct 2022139087.185.86$12,118
Sep 2022403084.888.16$34,207
Aug 20220094.529.13$0
Jul 20221620101.587.54$16,456
Jun 20221400115.097.98$16,113
May 20222650109.378.43$28,983
Apr 20222630104.226.84$27,410
Mar 20224050108.885.08$44,096
Feb 20220091.054.86$0
Jan 2022118081.844.54$9,657
Dec 20210071.323.90$0
Nov 2021111077.435.24$8,595
Oct 2021279079.795.71$22,261
Sep 2021141069.865.35$9,850
Aug 2021141066.024.22$9,309
Jul 2021203070.783.98$14,368
Jun 2021405069.493.38$28,143
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 2021456061.302.72$27,953
Feb 2021128057.805.55$7,398
Jan 2021128050.412.81$6,452
Dec 2020139044.642.68$6,205
Nov 2020136038.772.71$5,273
Oct 202082036.972.48$3,032
Sep 2020361037.091.99$13,389
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 2020137034.901.69$4,781
May 20200016.921.81$0
Apr 2020129014.751.80$1,903
Mar 20200030.341.86$0
Feb 2020377049.881.98$18,805
Jan 2020139057.252.09$7,958
Dec 2019273059.012.30$16,110
Nov 20190055.302.75$0
Oct 2019279053.472.42$14,918
Sep 2019287055.052.66$15,799
Aug 2019334053.112.30$17,739
Jul 2019163056.272.46$9,172
Jun 2019163052.782.49$8,603
May 20190058.482.74$0
Apr 2019399062.632.75$24,989
Mar 2019152056.803.06$8,634
Feb 2019284050.852.79$14,441
Jan 2019141046.033.23$6,490
Dec 2018446046.594.19$20,779
Nov 2018150052.934.24$7,940
Oct 201879061.443.40$4,854
Sep 2018142059.543.11$8,455
Aug 2018253059.403.07$15,028
Jul 2018240065.142.93$15,634
Jun 2018263060.183.08$15,827
May 2018299065.382.90$19,549
Apr 2018312063.842.90$19,918
Mar 2018296061.222.79$18,121
Feb 2018323061.782.77$19,955
Jan 2018158062.874.01$9,933
Dec 2017216057.272.92$12,370
Nov 2017221055.423.12$12,248
Oct 2017496049.292.98$24,448
Sep 2017257047.523.09$12,213
Aug 2017275045.373.00$12,477
Jul 2017248043.873.09$10,880
Jun 2017369042.493.09$15,679
May 2017110045.373.26$4,991
Apr 2017204047.933.21$9,778
Mar 2017240046.772.98$11,225
Feb 2017333050.452.95$16,800
Jan 2017176049.413.42$8,696
Dec 2016395048.763.72$19,260
Nov 2016267042.492.64$11,345
Oct 2016383046.193.09$17,691
Sep 20160041.553.10$0
Aug 2016264041.442.92$10,940
Jul 2016272041.622.92$11,321
Jun 2016542045.352.69$24,580
May 2016150042.521.99$6,378
Apr 2016416036.561.99$15,209
Mar 2016453033.011.79$14,954
Feb 2016131026.472.06$3,468
Jan 2016225027.352.36$6,154
Dec 20150032.362.00$0
Nov 2015671038.792.17$26,028
Oct 20150043.552.43$0
Sep 2015236042.992.76$10,146
Aug 2015135040.162.87$5,422
Jul 2015436048.152.95$20,993
Jun 2015441056.152.88$24,762
May 2015475055.212.96$26,225
Apr 20150049.822.71$0
Mar 2015270042.892.93$11,580
Feb 2015303044.662.98$13,532
Jan 2015247043.433.10$10,727
Dec 2014147054.693.59$8,039
Nov 2014140070.464.25$9,864
Oct 2014267078.303.90$20,906
Sep 2014538086.164.05$46,354
Aug 2014284089.394.04$25,387
Jul 2014430096.564.18$41,521
Jun 2014569098.164.74$55,853
May 2014286094.734.73$27,093
Apr 2014550095.944.81$52,767
Mar 2014151095.895.06$14,479
Feb 2014476097.406.19$46,362
Jan 2014308090.404.86$27,843
Dec 2013609091.824.35$55,918
Nov 2013304088.853.74$27,010
Oct 2013625097.423.78$60,888
Sep 20133500104.113.72$36,439
Aug 20135460104.253.52$56,921
Jul 20135130102.523.72$52,593
Jun 2013308094.403.93$29,075
May 2013415094.834.15$39,354
Apr 2013265093.964.28$24,899
Mar 2013308093.623.91$28,835
Feb 2013574091.233.42$52,366
Jan 2013467091.603.42$42,777
Dec 2012150086.773.42$13,016
Nov 2012293086.953.62$25,476
Oct 2012741089.383.40$66,231
Sep 2012139094.672.92$13,159
Aug 2012439092.662.91$40,678
Jul 2012864085.133.02$73,552
Jun 2012280079.822.52$22,350
May 2012453091.612.49$41,499
Apr 20122400101.652.00$24,396
Mar 20124330105.052.22$45,487
Feb 20126820101.102.57$68,950
Jan 2012147098.092.73$14,419
Dec 2011402096.873.24$38,942
Nov 2011315095.723.31$30,152
Oct 2011303084.983.65$25,749
Sep 2011301083.623.99$25,170
Aug 2011415083.404.15$34,611
Jul 2011142094.144.52$13,368
Jun 2011142092.904.64$13,192
May 2011281098.134.40$27,575
Apr 20111400105.964.33$14,834
Mar 20110096.364.06$0
Feb 2011136085.644.18$11,647
Jan 2011144086.504.59$12,456
Dec 2010140085.734.35$12,002
Nov 2010142080.843.80$11,479
Oct 2010141078.103.51$11,012
Sep 20100072.633.98$0
Aug 2010140073.684.42$10,315
Jul 2010142072.554.74$10,302
Jun 2010140070.364.91$9,850
May 20100071.124.24$0
Apr 2010139081.694.12$11,355
Mar 2010131078.394.39$10,269
Feb 2010133073.585.44$9,786
Jan 2010129074.365.96$9,592
Dec 2009133071.445.48$9,502
Nov 2009137074.593.75$10,219
Oct 20090072.544.11$0
Sep 2009136065.543.06$8,913
Aug 20090067.423.22$0
Jul 2009135061.133.46$8,253
Jun 2009135066.163.90$8,932
May 2009138054.743.93$7,554
Apr 2009278046.773.59$13,002
Mar 20090042.144.06$0
Feb 2009136032.814.63$4,462
Jan 2009271035.865.37$9,718
Dec 20080037.105.98$0
Nov 2008138055.496.86$7,658
Oct 2008136075.246.92$10,233
Sep 20082680101.767.88$27,272
Aug 20081360114.228.48$15,534
Jul 20081460131.0811.39$19,138
Jun 20082580131.3313.03$33,883
May 200800123.1711.57$0
Apr 20082850110.3110.45$31,438
Mar 20081420101.909.66$14,470
Feb 20080092.538.77$0
Jan 2008274090.388.21$24,764
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 2007271082.856.92$22,452
Sep 2007135075.846.24$10,238
Aug 2007142069.066.39$9,807
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 2007138059.617.81$8,226
Mar 20070056.927.30$0
Feb 2007289055.108.22$15,924
Jan 20070050.306.73$0
Dec 2006146056.656.92$8,271
Nov 2006139054.207.62$7,534
Oct 2006163054.906.01$8,949
Sep 20060060.085.04$0
Aug 2006163068.717.34$11,200
Jul 2006136069.376.34$9,434
Jun 2006162066.286.38$10,737
May 20060066.016.42$0
Apr 2006147064.397.36$9,465
Mar 2006129056.707.08$7,314
Feb 2006155057.597.75$8,926
Jan 2006164060.598.93$9,937
Dec 20050054.9413.42$0
Nov 2005140054.6910.59$7,657
Oct 2005176058.3413.80$10,268
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 2005140055.697.84$7,797
Jun 20050052.337.38$0
May 2005144045.226.65$6,512
Apr 20050049.207.36$0
Mar 2005181050.377.15$9,117
Feb 2005151045.226.31$6,828
Jan 2005151043.166.32$6,517
Dec 2004150039.866.75$5,979
Nov 20040045.286.33$0
Oct 2004288049.706.52$14,314
Sep 20040043.245.28$0
Aug 2004181042.375.55$7,669
Jul 20040038.286.08$0
Jun 2004181036.106.43$6,534
May 2004181037.486.49$6,784
Apr 20040034.475.86$0
Mar 2004180034.365.53$6,185
Feb 20040032.455.51$0
Jan 2004149032.036.30$4,772
Dec 200399030.266.30$2,996
Nov 20030028.804.60$0
Oct 2003149028.174.76$4,197
Sep 2003133026.314.75$3,499
Aug 20030029.765.13$0
Jul 2003116029.415.17$3,412
Jun 2003138028.565.98$3,941
May 2003146026.595.97$3,882
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 2002200024.664.14$4,932
Oct 2002147026.464.23$3,890
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 2002148024.583.06$3,638
Jun 2002148023.733.34$3,512
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 2001219025.524.31$5,589
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 200024026.889.12$645
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 2000150031.875.19$4,781
Aug 20000029.644.54$0
Jul 2000150028.534.09$4,280
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 2000150024.513.12$3,677
Mar 2000147028.422.86$4,178
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 1999116024.282.42$2,816
Nov 19990123.192.43$2
Oct 19990120.982.80$3
Sep 1999129121.752.62$2,808
Aug 19990119.262.88$3
Jul 19990117.892.37$2
Jun 19990115.942.36$2
May 1999291115.792.32$4,597
Apr 19990115.102.21$2
Mar 19990112.471.84$2
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998019.201.77$2
Nov 19980110.892.19$2
Oct 1998263112.421.97$3,268
Sep 19980112.592.08$2
Aug 19980111.301.91$2
Jul 19980111.742.24$2
Jun 1998281111.242.24$3,161
May 19980112.622.21$2
Apr 19980113.042.51$3
Mar 19980112.802.31$2
Feb 19980113.952.30$2
Jan 19980114.702.15$2
Dec 19970116.322.41$2
Nov 19970118.193.09$3
Oct 1997151119.253.15$2,910
Sep 1997146117.742.95$2,593
Aug 19970117.862.55$3
Jul 1997301117.582.25$5,294
Jun 19970117.242.26$2
May 1997147118.972.31$2,791
Apr 19970117.882.08$2
Mar 19970118.951.94$2
Feb 19970120.492.21$2
Jan 19970123.483.54$4
Dec 19960123.32$0
Nov 19960121.97$0
Oct 1996149123.31$3,473
Sep 19960122.22$0
Aug 19960120.26$0
Jul 1996156119.55$3,050
Jun 1996156118.73$2,922
May 19960119.43$0
Apr 1996295121.51$6,345
Mar 19960119.38$0
Feb 19960116.98$0
Jan 19960117.07$0
Dec 19950117.19$0
Nov 19950116.00$0
Oct 19950115.43$0
Sep 19950116.18$0
Aug 19950115.92$0
Jul 1995298115.24$4,542
Jun 19950116.41$0
May 19950117.56$0
Apr 1995303117.73$5,372
Mar 19950116.44$0
Feb 1995154116.58$2,553
Jan 199514115.92$223
Dec 19940115.03$0
Nov 19940115.90$0
Oct 19940115.58$0
Sep 1994147115.29$2,248
Aug 19940116.13$0
Jul 19940117.56$0
Jun 1994153117.09$2,615
May 19940115.88$0
Apr 19940114.14$0
Mar 1994142112.46$1,769
Feb 19940112.50$0
Jan 19940112.66$0
Dec 19930112.33$0
Nov 19930114.49$0
Oct 1993299115.85$4,739
Sep 19930115.03$0
Aug 19930115.66$0
Jul 1993152115.46$2,350
Jun 19930116.79$0
May 1993156117.68$2,758
Apr 19930118.05$0
Mar 1993152118.14$2,757
Feb 1993136117.90$2,434
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.

Apr 2026 — as filed, then multipliedworked
Oil                  123 bbl  × $ 98.93 =    $12,168
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $12,168

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/9351 is the state's own key, not one this site invented.