COX, D. A.

Operated by SYDRI OPERATING, LLC (P-5 833597) in the WALNUT BEND (2150) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 10727District 09Field 94911832OilCasinghead gasSaveExport
Value, all time
$2.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$164 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 2 leases and 7 wells, and the rule below applies to all of them.

Discovered
1959-02-07
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
OilDisposition49,931 bbl$2,360,898
Casinghead gasProduction13,609 Mcf$39,578
Total$2,400,476

4,089 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 (5)

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 33.7623, -97.0332. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles. 1 well has no surveyed location and is left out of it.

33.76260, -97.03190 · centre of 4 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
40.0%
2 of 5 wells
With a plug date
0.0%
0 of 5 wells
Median depth
2,716 ft
2 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
240.0%
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.
360.0%

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

Between 2,443 and 2,989 ft, median 2,716 ft, over the 2 wells that filed a depth.

Completions filed
May 1995 – Mar 2005
2 of 5 wells; 3 filed none

5 wells

42-0978286430 UYes
42-0978286550
42-0978286652
42-0970294417 U2,989 ftMar 2005Yes
42-0970202149 L2,443 ftMay 1995

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 20261890106.413.05$20,111
Apr 2026183098.932.87$18,104
Mar 2026231089.753.15$20,732
Feb 2026174063.503.75$11,049
Jan 202675059.138.00$4,435
Dec 2025213056.664.41$12,069
Nov 2025186058.593.93$10,898
Oct 2025185059.383.30$10,985
Sep 2025232062.743.08$14,556
Aug 2025195063.933.01$12,466
Jul 2025222066.743.32$14,816
Jun 2025211066.483.13$14,027
May 2025115060.553.23$6,963
Apr 2025118062.363.54$7,358
Mar 2025195067.704.27$13,202
Feb 2025184070.884.34$13,042
Jan 2025230074.324.28$17,094
Dec 2024159068.993.12$10,969
Nov 2024143069.052.20$9,874
Oct 2024158071.372.28$11,276
Sep 2024148069.612.36$10,302
Aug 2024161075.632.06$12,176
Jul 2024217079.932.15$17,345
Jun 2024183078.082.63$14,289
May 2024175078.812.20$13,792
Apr 2024107084.451.66$9,036
Mar 2024181080.301.55$14,534
Feb 2024130076.091.78$9,892
Jan 2024150073.023.30$10,953
Dec 2023252071.262.61$17,958
Nov 2023169077.892.81$13,163
Oct 2023168085.443.09$14,354
Sep 2023186089.042.74$16,561
Aug 2023211080.522.67$16,990
Jul 2023180074.852.64$13,473
Jun 202388068.962.26$6,068
May 202383070.622.23$5,861
Apr 202382178.122.24$6,408
Mar 202370172.852.39$5,102
Feb 2023102075.112.47$7,661
Jan 2023102276.533.39$7,813
Dec 202248476.415.73$3,691
Nov 2022176385.005.65$14,977
Oct 202299087.185.86$8,631
Sep 202267084.888.16$5,687
Aug 202263194.529.13$5,964
Jul 2022811101.587.54$8,236
Jun 2022574115.097.98$6,592
May 2022817109.378.43$8,918
Apr 202211911104.226.84$12,477
Mar 2022719108.885.08$7,776
Feb 202257491.054.86$5,209
Jan 202247581.844.54$3,869
Dec 202162671.323.90$4,445
Nov 202149577.435.24$3,820
Oct 202162679.795.71$4,981
Sep 202146569.865.35$3,240
Aug 202170766.024.22$4,651
Jul 202167770.783.98$4,770
Jun 2021491669.493.38$3,459
May 20211051463.483.02$6,708
Apr 20211021260.362.76$6,190
Mar 2021144861.302.72$8,849
Feb 2021104357.805.55$6,028
Jan 2021108450.412.81$5,456
Dec 20201003044.642.68$4,544
Nov 2020605338.772.71$2,470
Oct 2020684536.972.48$2,625
Sep 20201093637.091.99$4,114
Aug 2020622739.982.39$2,543
Jul 202063338.371.83$2,423
Jun 202043034.901.69$1,501
May 2020301016.921.81$526
Apr 20201462014.751.80$2,190
Mar 2020752230.341.86$2,316
Feb 2020912649.881.98$4,591
Jan 20201682557.252.09$9,670
Dec 2019772759.012.30$4,606
Nov 20191102855.302.75$6,160
Oct 20191042653.472.42$5,624
Sep 20191302755.052.66$7,228
Aug 2019942853.112.30$5,057
Jul 2019832756.272.46$4,737
Jun 20191122752.782.49$5,979
May 20191062358.482.74$6,262
Apr 2019681962.632.75$4,311
Mar 20191172756.803.06$6,728
Feb 20191172450.852.79$6,016
Jan 20191292146.033.23$6,006
Dec 20181482846.594.19$7,013
Nov 20181392452.934.24$7,459
Oct 20181292861.443.40$8,021
Sep 20181103059.543.11$6,643
Aug 2018513159.403.07$3,124
Jul 2018552665.142.93$3,659
Jun 2018773160.183.08$4,729
May 2018842065.382.90$5,550
Apr 20181162763.842.90$7,484
Mar 2018802761.222.79$4,973
Feb 2018982661.782.77$6,126
Jan 2018782562.874.01$5,004
Dec 2017552657.272.92$3,226
Nov 20176722255.423.12$4,405
Oct 201712218549.292.98$6,565
Sep 20175811347.523.09$3,105
Aug 2017999745.373.00$4,783
Jul 2017727143.873.09$3,378
Jun 20178211242.493.09$3,830
May 20178911645.373.26$4,416
Apr 20176911347.933.21$3,670
Mar 201711811646.772.98$5,865
Feb 201712510250.452.95$6,607
Jan 20179410849.413.42$5,014
Dec 201614513648.763.72$7,577
Nov 201610312442.492.64$4,704
Oct 2016849946.193.09$4,186
Sep 2016695941.553.10$3,050
Aug 2016844941.442.92$3,624
Jul 20161125441.622.92$4,819
Jun 2016703445.352.69$3,266
May 2016742642.521.99$3,198
Apr 2016733536.561.99$2,739
Mar 2016924533.011.79$3,118
Feb 2016853526.472.06$2,322
Jan 2016912427.352.36$2,546
Dec 20151271832.362.00$4,146
Nov 2015742838.792.17$2,931
Oct 2015903543.552.43$4,004
Sep 20151063442.992.76$4,651
Aug 20151471340.162.87$5,941
Jul 201594748.152.95$4,547
Jun 2015981556.152.88$5,546
May 2015713255.212.96$4,014
Apr 2015883649.822.71$4,482
Mar 20151132942.892.93$4,932
Feb 2015922344.662.98$4,177
Jan 20151342543.433.10$5,897
Dec 2014651654.693.59$3,612
Nov 201461170.464.25$4,302
Oct 201447178.303.90$3,684
Sep 201466386.164.05$5,699
Aug 201479889.394.04$7,094
Jul 201476096.564.18$7,339
Jun 2014873798.164.74$8,715
May 201486194.734.73$8,152
Apr 2014815795.944.81$8,045
Mar 2014975895.895.06$9,595
Feb 2014964597.406.19$9,629
Jan 2014725390.404.86$6,766
Dec 20131045391.824.35$9,780
Nov 20131006188.853.74$9,113
Oct 20131056597.423.78$10,475
Sep 201312065104.113.72$12,735
Aug 201311067104.253.52$11,704
Jul 201310867102.523.72$11,321
Jun 2013866594.403.93$8,374
May 20131155694.834.15$11,138
Apr 20131065493.964.28$10,191
Mar 2013995393.623.91$9,476
Feb 2013664791.233.42$6,182
Jan 2013795391.603.42$7,418
Dec 2012354486.773.42$3,187
Nov 2012815286.953.62$7,231
Oct 2012795689.383.40$7,251
Sep 2012775294.672.92$7,441
Aug 2012655892.662.91$6,192
Jul 2012585885.133.02$5,113
Jun 2012715679.822.52$5,808
May 2012775891.612.49$7,198
Apr 20129958101.652.00$10,179
Mar 20126856105.052.22$7,268
Feb 20127648101.102.57$7,807
Jan 2012973498.092.73$9,608
Dec 2011124496.873.24$12,025
Nov 2011113495.723.31$10,830
Oct 20111181684.983.65$10,086
Sep 2011971983.623.99$8,187
Aug 2011822483.404.15$6,938
Jul 2011732494.144.52$6,981
Jun 2011774292.904.64$7,348
May 2011732898.134.40$7,287
Apr 2011626105.964.33$6,596
Mar 201184096.364.06$8,094
Feb 2011100085.644.18$8,564
Jan 201187086.504.59$7,526
Dec 201081485.734.35$6,962
Nov 201083880.843.80$6,740
Oct 201072778.103.51$5,648
Sep 2010651172.633.98$4,765
Aug 2010512073.684.42$3,846
Jul 2010722072.554.74$5,318
Jun 201054970.364.91$3,844
May 201060071.124.24$4,267
Apr 201067881.694.12$5,506
Mar 2010442078.394.39$3,537
Feb 20101103473.585.44$8,279
Jan 2010663474.365.96$5,111
Dec 20091027871.445.48$7,715
Nov 2009985874.593.75$7,527
Oct 2009996472.544.11$7,445
Sep 2009755365.543.06$5,078
Aug 2009864467.423.22$5,940
Jul 2009663861.133.46$4,166
Jun 2009674066.163.90$4,589
May 2009764454.743.93$4,333
Apr 2009923446.773.59$4,425
Mar 2009594042.144.06$2,649
Feb 2009943432.814.63$3,242
Jan 2009524835.865.37$2,123
Dec 2008244137.105.98$1,135
Nov 2008644055.496.86$3,826
Oct 2008663475.246.92$5,201
Sep 20089344101.767.88$9,810
Aug 200812741114.228.48$14,854
Jul 200814244131.0811.39$19,114
Jun 200811934131.3313.03$16,071
May 20089227123.1711.57$11,644
Apr 20085121110.3110.45$5,845
Mar 200811336101.909.66$11,863
Feb 20081293692.538.77$12,252
Jan 20081333490.388.21$12,300
Dec 200714311488.337.30$13,464
Nov 20079610491.677.29$9,559
Oct 20071507282.856.92$12,926
Sep 20071014675.846.24$7,947
Aug 20071185569.066.39$8,500
Jul 200714310270.906.39$10,790
Jun 20071277962.007.55$8,470
May 20071275158.747.85$7,860
Apr 200795559.617.81$5,702
Mar 2007821056.927.30$4,740
Feb 2007911455.108.22$5,129
Jan 2007602050.306.73$3,153
Dec 2006964356.656.92$5,736
Nov 20061133354.207.62$6,376
Oct 20061051454.906.01$5,849
Sep 2006932960.085.04$5,734
Aug 20061103968.717.34$7,844
Jul 20061544169.376.34$10,943
Jun 20061343166.286.38$9,079
May 20061511766.016.42$10,077
Apr 20061185464.397.36$7,995
Mar 20061513256.707.08$8,788
Feb 20061454257.597.75$8,676
Jan 20061611060.598.93$9,844
Dec 20051581054.9413.42$8,815
Nov 20051671154.6910.59$9,250
Oct 20051641858.3413.80$9,816
Sep 20051702061.4512.08$10,688
Aug 20051434561.519.80$9,237
Jul 20051401955.697.84$7,946
Jun 20051241852.337.38$6,622
May 200578545.226.65$3,560
Apr 2005153049.207.36$7,528
Mar 2005144050.377.15$7,253
Feb 200594245.226.31$4,263
Jan 2005158443.166.32$6,845
Dec 2004163339.866.75$6,517
Nov 2004116545.286.33$5,284
Oct 2004119449.706.52$5,940
Sep 20041371243.245.28$5,987
Aug 2004161642.375.55$6,855
Jul 2004156938.286.08$6,026
Jun 2004147736.106.43$5,352
May 20041501037.486.49$5,687
Apr 20041662034.475.86$5,839
Mar 20041661734.365.53$5,798
Feb 20041371332.455.51$4,517
Jan 20041431632.036.30$4,681
Dec 20031581630.266.30$4,882
Nov 20031631728.804.60$4,773
Oct 20031602128.174.76$4,607
Sep 2003101826.314.75$2,695
Aug 20031721129.765.13$5,175
Jul 2003911429.415.17$2,749
Jun 20031261628.565.98$3,694
May 20031462026.595.97$4,002
Apr 20031301726.675.41$3,559
Mar 20031391831.146.10$4,438
Feb 20031251633.487.93$4,312
Jan 20031321930.315.58$4,107
Dec 20021501926.914.85$4,129
Nov 20021942724.664.14$4,896
Oct 20021301826.464.23$3,516
Sep 20021772527.443.64$4,948
Aug 20021481725.963.16$3,896
Jul 20021722324.583.06$4,298
Jun 20021712023.733.34$4,125
May 20021842024.663.58$4,609
Apr 20021792123.653.51$4,307
Mar 20021301422.003.10$2,903
Feb 20021301418.222.38$2,402
Jan 20021641717.172.38$2,856
Dec 20011221516.932.36$2,101
Nov 20011231318.072.41$2,254
Oct 20011351619.782.53$2,711
Sep 20011562024.262.25$3,830
Aug 20011492124.873.05$3,770
Jul 20011842523.933.20$4,483
Jun 20011291924.563.82$3,241
May 20011171625.524.31$3,055
Apr 20011001124.685.34$2,527
Mar 20011431524.545.38$3,590
Feb 20011521627.755.77$4,310
Jan 20011491727.478.40$4,236
Dec 20001551926.889.12$4,340
Nov 20001502032.215.66$4,945
Oct 20001341631.235.15$4,267
Sep 20001511931.875.19$4,911
Aug 20001821529.644.54$5,463
Jul 20002072228.534.09$5,996
Jun 20001651929.304.40$4,918
May 20001761727.263.68$4,860
Apr 20001842224.513.12$4,578
Mar 20002021828.422.86$5,792
Feb 20001731727.622.73$4,825
Jan 20002041925.272.48$5,202
Dec 1999781224.282.42$1,923
Nov 19991331423.192.43$3,118
Oct 19991872420.982.80$3,991
Sep 1999771521.752.62$1,714
Aug 19991096219.262.88$2,278
Jul 19991281117.892.37$2,316
Jun 19991241115.942.36$2,003
May 1999100815.792.32$1,598
Apr 19991661115.102.21$2,531
Mar 19991421212.471.84$1,793
Feb 1999130149.981.82$1,323
Jan 19991731510.381.90$1,824
Dec 1998161199.201.77$1,515
Nov 19981104310.892.19$1,292
Oct 199834612.421.97$434
Sep 199851812.592.08$659
Aug 1998711011.301.91$821
Jul 1998771711.742.24$942
Jun 1998991111.242.24$1,137
May 19981181412.622.21$1,520
Apr 19981374513.042.51$1,899
Mar 19981722912.802.31$2,269
Feb 19981232413.952.30$1,771
Jan 19981525714.702.15$2,357
Dec 19971302616.322.41$2,184
Nov 19971182418.193.09$2,221
Oct 19971645019.253.15$3,314
Sep 19971624317.742.95$3,001
Aug 19971084217.862.55$2,036
Jul 1997306117.582.25$664
Jun 1997922817.242.26$1,649
May 19971413218.972.31$2,749
Apr 19971512317.882.08$2,748
Mar 19971522918.951.94$2,937
Feb 19971353620.492.21$2,846
Jan 19971451723.483.54$3,465
Dec 19961594123.32$3,708
Nov 19962261821.97$4,965
Oct 19962115423.31$4,918
Sep 19961254122.22$2,778
Aug 19961122020.26$2,269
Jul 19961503419.55$2,933
Jun 19962578018.73$4,814
May 19961947819.43$3,769
Apr 19961502521.51$3,227
Mar 1996164519.38$3,178
Feb 1996157916.98$2,666
Jan 1996124917.07$2,117
Dec 19952031117.19$3,490
Nov 199519613316.00$3,136
Oct 199511911615.43$1,836
Sep 19957910616.18$1,278
Aug 199518113715.92$2,882
Jul 199519515115.24$2,972
Jun 199513714016.41$2,248
May 199518214917.56$3,196
Apr 199526316017.73$4,663
Mar 199523016016.44$3,781
Feb 199518715716.58$3,100
Jan 199532917815.92$5,238
Dec 19945204715.03$7,816
Nov 19943476515.90$5,517
Oct 19943179515.58$4,939
Sep 199450618915.29$7,737
Aug 199434212516.13$5,516
Jul 199426110617.56$4,583
Jun 199447922317.09$8,186
May 199431614315.88$5,018
Apr 199425815114.14$3,648
Mar 199418611712.46$2,318
Feb 199424411312.50$3,050
Jan 199425016212.66$3,165
Dec 19931117612.33$1,369
Nov 1993112414.49$159
Oct 1993593415.85$935
Sep 1993312115.03$466
Aug 1993653115.66$1,018
Jul 199314410615.46$2,226
Jun 19931246416.79$2,082
May 19931215817.68$2,139
Apr 1993993318.05$1,787
Mar 19931043018.14$1,887
Feb 19931043617.90$1,862
Jan 1993922816.93$1,558

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                  189 bbl  × $106.41 =    $20,111
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $20,111

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/10727 is the state's own key, not one this site invented.