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CLARK

Operated by RHEACO OIL COMPANY, LTD. (P-5 704810) in the SPINDLETOP field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 11431District 03Field 85195001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$17.3 M
Jan 1993 – May 2026
Value, last 12 filed months
$378 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The SPINDLETOP field

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 67 leases and 527 wells, and the rule below applies to all of them.

Discovered
1901-01-01
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
0 ft
minimum

A drilling unit in this field needs at least 0 acres.

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: “ IN LIEU OF MULT-SHOT SURVEY”

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
OilDisposition280,019 bbl$17,306,292
Casinghead gasProduction21 Mcf$0
Total$17,306,292

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 (27)

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 30.0194, -94.0741. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

30.01873, -94.07343 · 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
48.1%
13 of 27 wells
With a plug date
48.1%
13 of 27 wells
Median depth
878 ft
27 wells filed one
Completion to plug
12.6 years
median over 13 wells

What the state filed about each well

On the RRC proration schedule
1348.1%
A plug date is filed
1348.1%
BothOn the schedule and plugged. Neither fact cancels the other.
1348.1%
NeitherNo plug date, and not on the schedule.
1451.9%

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, 27 of 27 wells. Median 878 ft, with the middle half between 840 and 940 ft; the shallowest is 785 ft and the deepest 1,131 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, 27 of 27 wells, Feb 1977 – Aug 2016. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Feb 1977 – Aug 2016
27 of 27 wells
Plug dates filed
Apr 1985 – Feb 2025
13 of 27 wells; 14 filed none

Last completion to plug: a median of 12.6 years across the 13 wells that filed both dates, with the middle half between 7.9 years and 15.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

27 wells

42-2453278754848 ftAug 2016——
42-2453282156893 ftMay 2015Jan 2025Yes
42-2453278855876 ftJun 2014Jan 2025Yes
42-2453276151974 ftAug 2013——
42-2453276352885 ftJul 2013——
42-2453271749969 ftJun 2012Jan 2025Yes
42-2453259348910 ftAug 2010——
42-24532595501,036 ftJun 2010Jan 2025Yes
42-24532521471,131 ftApr 2009——
42-2453251846906 ftApr 2009——
42-2453252045A878 ftAug 2008——
42-2453248743A841 ftJan 2008Feb 2023Yes
42-2453251944A838 ftDec 2007Feb 2023Yes
42-2453246842837 ftDec 2006——
42-2453200744946 ftDec 1990Oct 1998Yes
42-2453200843785 ftNov 1990Oct 1998Yes
42-2450095440865 ftAug 1988——
42-2453193641938 ftAug 1988Mar 2012Yes
42-2453185739925 ftNov 1985——
42-2453180538822 ftAug 1984——
42-2458132334863 ftOct 1982——
42-2458132132802 ftAug 1982Feb 2025Yes
42-2453136437941 ftFeb 1981Apr 1985Yes
42-2453136536956 ftMar 1980Mar 2012Yes
42-2453020233857 ftJun 1979Apr 1985Yes
42-2450094618801 ftJun 1977——
42-2450094719833 ftFeb 1977——

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 20264050106.413.05$43,096
Apr 2026528098.932.87$52,235
Mar 2026537089.753.15$48,196
Feb 2026406063.503.75$25,781
Jan 2026409059.138.00$24,184
Dec 2025548056.664.41$31,050
Nov 202549058.593.93$2,871
Oct 2025400059.383.30$23,752
Sep 2025549062.743.08$34,444
Aug 2025410063.933.01$26,211
Jul 2025582066.743.32$38,843
Jun 2025408066.483.13$27,124
May 2025539060.553.23$32,636
Apr 2025545062.363.54$33,986
Mar 2025674067.704.27$45,630
Feb 2025421070.884.34$29,840
Jan 2025541074.324.28$40,207
Dec 2024689068.993.12$47,534
Nov 2024405069.052.20$27,965
Oct 2024275071.372.28$19,627
Sep 2024534069.612.36$37,172
Aug 2024409075.632.06$30,933
Jul 2024404079.932.15$32,292
Jun 2024274078.082.63$21,394
May 2024538078.812.20$42,400
Apr 2024406084.451.66$34,287
Mar 2024543080.301.55$43,603
Feb 2024552076.091.78$42,002
Jan 2024273073.023.30$19,934
Dec 2023423071.262.61$30,143
Nov 2023411077.892.81$32,013
Oct 2023682085.443.09$58,270
Sep 2023682089.042.74$60,725
Aug 2023548080.522.67$44,125
Jul 2023823074.852.64$61,602
Jun 2023543068.962.26$37,445
May 2023703070.622.23$49,646
Apr 2023414078.122.24$32,342
Mar 2023686072.852.39$49,975
Feb 2023409075.112.47$30,720
Jan 2023706076.533.39$54,030
Dec 2022559076.415.73$42,713
Nov 2022544085.005.65$46,240
Oct 2022676087.185.86$58,934
Sep 2022551084.888.16$46,769
Aug 2022538094.529.13$50,852
Jul 20226710101.587.54$68,160
Jun 20225420115.097.98$62,379
May 20228080109.378.43$88,371
Apr 20225360104.226.84$55,862
Mar 20225510108.885.08$59,993
Feb 2022672091.054.86$61,186
Jan 2022546081.844.54$44,685
Dec 2021542071.323.90$38,655
Nov 2021552077.435.24$42,741
Oct 2021419079.795.71$33,432
Sep 2021825069.865.35$57,635
Aug 2021815066.024.22$53,806
Jul 2021553070.783.98$39,141
Jun 2021681069.493.38$47,323
May 2021822063.483.02$52,181
Apr 20211,104060.362.76$66,637
Mar 2021547061.302.72$33,531
Feb 2021413057.805.55$23,871
Jan 2021673050.412.81$33,926
Dec 2020420044.642.68$18,749
Nov 20200038.772.71$0
Oct 2020281036.972.48$10,389
Sep 2020139037.091.99$5,156
Aug 2020292039.982.39$11,674
Jul 2020414038.371.83$15,885
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 2020410014.751.80$6,048
Mar 2020699030.341.86$21,208
Feb 2020826049.881.98$41,201
Jan 2020837057.252.09$47,918
Dec 2019845059.012.30$49,863
Nov 2019853055.302.75$47,171
Oct 2019566053.472.42$30,264
Sep 2019562055.052.66$30,938
Aug 2019552053.112.30$29,317
Jul 2019693056.272.46$38,995
Jun 2019569052.782.49$30,032
May 2019853058.482.74$49,883
Apr 2019715062.632.75$44,780
Mar 2019859056.803.06$48,791
Feb 2019894050.852.79$45,460
Jan 2019601046.033.23$27,664
Dec 2018746046.594.19$34,756
Nov 2018617052.934.24$32,658
Oct 2018883061.443.40$54,252
Sep 2018715059.543.11$42,571
Aug 2018841059.403.07$49,955
Jul 2018844065.142.93$54,978
Jun 2018740060.183.08$44,533
May 20181,001065.382.90$65,445
Apr 2018965063.842.90$61,606
Mar 2018973061.222.79$59,567
Feb 2018920061.782.77$56,838
Jan 2018996062.874.01$62,619
Dec 20171,089057.272.92$62,367
Nov 20171,251055.423.12$69,330
Oct 20171,068049.292.98$52,642
Sep 2017937047.523.09$44,526
Aug 2017910045.373.00$41,287
Jul 20171,485043.873.09$65,147
Jun 2017898042.493.09$38,156
May 20171,266045.373.26$57,438
Apr 20171,265047.933.21$60,631
Mar 20171,271046.772.98$59,445
Feb 20171,318050.452.95$66,493
Jan 20171,397049.413.42$69,026
Dec 20161,276048.763.72$62,218
Nov 20161,517042.492.64$64,457
Oct 20161,511046.193.09$69,793
Sep 20161,362041.553.10$56,591
Aug 2016538041.442.92$22,295
Jul 2016550041.622.92$22,891
Jun 2016514045.352.69$23,310
May 2016648042.521.99$27,553
Apr 2016791036.561.99$28,919
Mar 2016538033.011.79$17,759
Feb 2016669026.472.06$17,708
Jan 2016806027.352.36$22,044
Dec 20151,078032.362.00$34,884
Nov 2015799038.792.17$30,993
Oct 20151,066043.552.43$46,424
Sep 2015921042.992.76$39,594
Aug 2015918040.162.87$36,867
Jul 20151,020048.152.95$49,113
Jun 2015913056.152.88$51,265
May 20151,214055.212.96$67,025
Apr 20151,173049.822.71$58,439
Mar 20151,060042.892.93$45,463
Feb 20151,047044.662.98$46,759
Jan 20151,189043.433.10$51,638
Dec 20141,105054.693.59$60,432
Nov 20141,065070.464.25$75,040
Oct 2014931078.303.90$72,897
Sep 20141,181086.164.05$101,755
Aug 20141,146089.394.04$102,441
Jul 20141,333096.564.18$128,714
Jun 20141,036098.164.74$101,694
May 20141,144094.734.73$108,371
Apr 20141,299095.944.81$124,626
Mar 20141,050095.895.06$100,685
Feb 20141,050097.406.19$102,270
Jan 20141,199090.404.86$108,390
Dec 20131,329091.824.35$122,029
Nov 20131,400088.853.74$124,390
Oct 20131,544097.423.78$150,416
Sep 20132,1030104.113.72$218,943
Aug 20131,7410104.253.52$181,499
Jul 20131,4120102.523.72$144,758
Jun 20131,437094.403.93$135,653
May 20131,652094.834.15$156,659
Apr 20131,386093.964.28$130,229
Mar 20131,577093.623.91$147,639
Feb 20131,300091.233.42$118,599
Jan 20131,283091.603.42$117,523
Dec 20121,191086.773.42$103,343
Nov 20121,139086.953.62$99,036
Oct 20121,033089.383.40$92,330
Sep 2012997094.672.92$94,386
Aug 20121,252092.662.91$116,010
Jul 20121,114085.133.02$94,835
Jun 20121,687079.822.52$134,656
May 20121,039091.612.49$95,183
Apr 20129670101.652.00$98,296
Mar 20129980105.052.22$104,840
Feb 20121,1150101.102.57$112,727
Jan 2012991098.092.73$97,207
Dec 20111,124096.873.24$108,882
Nov 20111,125095.723.31$107,685
Oct 20111,115084.983.65$94,753
Sep 2011995083.623.99$83,202
Aug 20111,109083.404.15$92,491
Jul 20111,521094.144.52$143,187
Jun 20111,254092.904.64$116,497
May 20111,407098.134.40$138,069
Apr 20111,2520105.964.33$132,662
Mar 20111,329096.364.06$128,062
Feb 20111,250085.644.18$107,050
Jan 20111,539086.504.59$133,124
Dec 20101,544085.734.35$132,367
Nov 20101,785080.843.80$144,299
Oct 20101,818078.103.51$141,986
Sep 20101,948072.633.98$141,483
Aug 20102,079073.684.42$153,181
Jul 20102,086072.554.74$151,339
Jun 20101,260070.364.91$88,654
May 20101,120071.124.24$79,654
Apr 20101,680081.694.12$137,239
Mar 20100078.394.39$0
Feb 20101,414073.585.44$104,042
Jan 20101,328074.365.96$98,750
Dec 20091,487071.445.48$106,231
Nov 20091,326074.593.75$98,906
Oct 20091,548072.544.11$112,292
Sep 2009997065.543.06$65,343
Aug 20091,424067.423.22$96,006
Jul 20091,584061.133.46$96,830
Jun 2009965066.163.90$63,844
May 20091,371054.743.93$75,049
Apr 2009905046.773.59$42,327
Mar 20091,058042.144.06$44,584
Feb 2009905032.814.63$29,693
Jan 20091,226035.865.37$43,964
Dec 20081,377037.105.98$51,087
Nov 20081,051055.496.86$58,320
Oct 20081,187075.246.92$89,310
Sep 20087120101.767.88$72,453
Aug 20081,1940114.228.48$136,379
Jul 20081,6430131.0811.39$215,364
Jun 20081,0350131.3313.03$135,927
May 20081,1970123.1711.57$147,434
Apr 20081,0580110.3110.45$116,708
Mar 20086730101.909.66$68,579
Feb 20081,019092.538.77$94,288
Jan 2008662090.388.21$59,832
Dec 20071,123088.337.30$99,195
Nov 2007827091.677.29$75,811
Oct 2007824082.856.92$68,268
Sep 2007829075.846.24$62,871
Aug 20071,128069.066.39$77,900
Jul 2007807070.906.39$57,216
Jun 2007667062.007.55$41,354
May 2007661058.747.85$38,827
Apr 2007647059.617.81$38,568
Mar 2007490056.927.30$27,891
Feb 2007648055.108.22$35,705
Jan 2007827050.306.73$41,598
Dec 2006642056.656.92$36,369
Nov 2006667054.207.62$36,151
Oct 2006330054.906.01$18,117
Sep 2006670060.085.04$40,254
Aug 2006488068.717.34$33,530
Jul 2006662069.376.34$45,923
Jun 2006498066.286.38$33,007
May 2006664066.016.42$43,831
Apr 2006663064.397.36$42,691
Mar 2006498056.707.08$28,237
Feb 2006334057.597.75$19,235
Jan 2006497060.598.93$30,113
Dec 2005504054.9413.42$27,690
Nov 2005499054.6910.59$27,290
Oct 2005664058.3413.80$38,738
Sep 2005331061.4512.08$20,340
Aug 2005499061.519.80$30,693
Jul 2005502055.697.84$27,956
Jun 2005496052.337.38$25,956
May 2005499045.226.65$22,565
Apr 2005670049.207.36$32,964
Mar 2005669050.377.15$33,698
Feb 2005505045.226.31$22,836
Jan 2005672043.166.32$29,004
Dec 2004674039.866.75$26,866
Nov 2004501045.286.33$22,685
Oct 2004831049.706.52$41,301
Sep 2004832043.245.28$35,976
Aug 20041,152042.375.55$48,810
Jul 20041,153038.286.08$44,137
Jun 2004166036.106.43$5,993
May 2004327037.486.49$12,256
Apr 2004167034.475.86$5,756
Mar 2004164034.365.53$5,635
Feb 2004167032.455.51$5,419
Jan 2004155032.036.30$4,965
Dec 2003334030.266.30$10,107
Nov 2003165028.804.60$4,752
Oct 2003336028.174.76$9,465
Sep 2003166026.314.75$4,367
Aug 2003165029.765.13$4,910
Jul 2003164029.415.17$4,823
Jun 2003167028.565.98$4,770
May 2003320026.595.97$8,509
Apr 2003169026.675.41$4,507
Mar 2003167031.146.10$5,200
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 2002152026.464.23$4,022
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 2002166024.583.06$4,080
Jun 20020023.733.34$0
May 2002162024.663.58$3,995
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 2002164018.222.38$2,988
Jan 2002168017.172.38$2,885
Dec 2001155016.932.36$2,624
Nov 2001141018.072.41$2,548
Oct 2001167019.782.53$3,303
Sep 2001166024.262.25$4,027
Aug 2001164024.873.05$4,079
Jul 20010023.933.20$0
Jun 2001326024.563.82$8,007
May 20010025.524.31$0
Apr 2001337024.685.34$8,317
Mar 2001166024.545.38$4,074
Feb 2001169027.755.77$4,690
Jan 2001320027.478.40$8,790
Dec 2000318026.889.12$8,548
Nov 2000339032.215.66$10,919
Oct 2000336031.235.15$10,493
Sep 2000335031.875.19$10,676
Aug 2000348029.644.54$10,315
Jul 2000514028.534.09$14,664
Jun 2000513029.304.40$15,031
May 2000327027.263.68$8,914
Apr 2000328024.513.12$8,039
Mar 2000491028.422.86$13,954
Feb 2000327027.622.73$9,032
Jan 2000328025.272.48$8,289
Dec 1999330024.282.42$8,012
Nov 1999331023.192.43$7,676
Oct 1999491020.982.80$10,301
Sep 1999327021.752.62$7,112
Aug 1999324019.262.88$6,240
Jul 1999511017.892.37$9,142
Jun 1999331015.942.36$5,276
May 1999339015.792.32$5,353
Apr 1999514015.102.21$7,761
Mar 1999496012.471.84$6,185
Feb 199933509.981.82$3,343
Jan 1999499010.381.90$5,180
Dec 199832209.201.77$2,962
Nov 1998520010.892.19$5,663
Oct 1998505012.421.97$6,272
Sep 1998328012.592.08$4,130
Aug 1998332011.301.91$3,752
Jul 1998335011.742.24$3,933
Jun 1998493011.242.24$5,541
May 1998324012.622.21$4,089
Apr 1998510013.042.51$6,650
Mar 1998327012.802.31$4,186
Feb 1998485013.952.30$6,766
Jan 1998348014.702.15$5,116
Dec 1997504016.322.41$8,225
Nov 1997513018.193.09$9,331
Oct 1997331019.253.15$6,372
Sep 1997348017.742.95$6,174
Aug 1997492017.862.55$8,787
Jul 1997330017.582.25$5,801
Jun 1997497017.242.26$8,568
May 1997464018.972.31$8,802
Apr 1997490017.882.08$8,761
Mar 1997512018.951.94$9,702
Feb 1997320020.492.21$6,557
Jan 1997510023.483.54$11,975
Dec 1996342023.32—$7,975
Nov 1996329021.97—$7,228
Oct 1996658023.31—$15,338
Sep 1996348022.22—$7,733
Aug 1996516020.26—$10,454
Jul 1996506019.55—$9,892
Jun 1996486018.73—$9,103
May 1996492019.43—$9,560
Apr 1996342021.51—$7,356
Mar 1996497019.38—$9,632
Feb 1996491016.98—$8,337
Jan 1996480017.07—$8,194
Dec 1995487017.19—$8,372
Nov 1995489016.00—$7,824
Oct 1995487015.43—$7,514
Sep 1995497016.18—$8,041
Aug 1995481015.92—$7,658
Jul 1995646015.24—$9,845
Jun 1995647016.41—$10,617
May 1995501017.56—$8,798
Apr 1995505017.73—$8,954
Mar 1995661016.44—$10,867
Feb 1995491016.58—$8,141
Jan 1995668015.92—$10,635
Dec 1994500015.03—$7,515
Nov 1994492015.90—$7,823
Oct 1994641015.58—$9,987
Sep 1994638115.29—$9,755
Aug 1994652116.13—$10,517
Jul 1994484117.56—$8,499
Jun 1994669117.09—$11,433
May 1994649115.88—$10,306
Apr 1994491114.14—$6,943
Mar 1994685112.46—$8,535
Feb 1994528112.50—$6,600
Jan 1994690112.66—$8,735
Dec 1993499112.33—$6,153
Nov 1993516114.49—$7,477
Oct 1993497115.85—$7,877
Sep 1993341115.03—$5,125
Aug 1993486115.66—$7,611
Jul 1993501115.46—$7,745
Jun 1993507116.79—$8,513
May 1993506117.68—$8,946
Apr 1993506118.05—$9,133
Mar 1993495118.14—$8,979
Feb 1993496117.90—$8,878
Jan 1993336116.93—$5,688

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                  405 bbl  × $106.41 =    $43,096
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $43,096

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. 03/O/11431 is the state's own key, not one this site invented.