COX, D. A.

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

Oil lease lease 2487District 09Field 94911156OilCasinghead gasSaveExport
Value, all time
$362 k
Jan 1993 – May 2026
Value, last 12 filed months
$28 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 6 leases and 45 wells, and the rule below applies to all of them.

Discovered
1947-02-04
as the register files it
Field class
Oil
the register's own label
Between wells
100 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 10 acres.

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
OilDisposition5,087 bbl$351,483
Casinghead gasProduction3,102 Mcf$10,652
Total$362,135

Wells on this lease (12)

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 33.7620, -97.0313. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.6 miles.

33.76188, -97.03109 · 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
41.7%
5 of 12 wells
With a plug date
16.7%
2 of 12 wells
Median depth
2,992 ft
11 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
541.7%
A plug date is filed
216.7%
BothOn the schedule and plugged. Neither fact cancels the other.
216.7%
NeitherNo plug date, and not on the schedule.
758.3%

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, 11 of 12 wells. Median 2,992 ft, with the middle half between 2,966 and 3,002 ft; the shallowest is 2,920 ft and the deepest 5,050 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, 8 of 12 wells, Jul 1948 – Sep 2008. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jul 1948 – Sep 2008
8 of 12 wells; 4 filed none
Plug dates filed
Jul 1990 – Jul 1993
2 of 12 wells; 10 filed none

12 wells

42-09702926273,000 ftJul 1993Yes
42-09702946262,920 ftYes
42-09782358292,962 ftJul 1990Yes
42-0970292728 L
42-09701010435,050 ftSep 2008
42-09702944172,989 ftMar 2005Yes
42-09782351162,970 ftMay 1995
42-09702931342,992 ftMay 1995
42-09702930313,008 ftApr 1995
42-0978235015A3,004 ftApr 1995
42-09707394302,998 ftJan 1980Yes
42-09782354242,945 ftJul 1948

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 2026320106.413.05$3,405
Apr 202631098.932.87$3,067
Mar 202639089.753.15$3,500
Feb 202629063.503.75$1,842
Jan 202613059.138.00$769
Dec 202535056.664.41$1,983
Nov 202531058.593.93$1,816
Oct 202532059.383.30$1,900
Sep 202539062.743.08$2,447
Aug 202533063.933.01$2,110
Jul 202537066.743.32$2,469
Jun 202535066.483.13$2,327
May 202519060.553.23$1,150
Apr 202522062.363.54$1,372
Mar 202533067.704.27$2,234
Feb 202531070.884.34$2,197
Jan 202538074.324.28$2,824
Dec 202427068.993.12$1,863
Nov 202424069.052.20$1,657
Oct 202426071.372.28$1,856
Sep 202425069.612.36$1,740
Aug 202427075.632.06$2,042
Jul 202436079.932.15$2,877
Jun 202430078.082.63$2,342
May 202429078.812.20$2,285
Apr 202418084.451.66$1,520
Mar 202430080.301.55$2,409
Feb 202422076.091.78$1,674
Jan 202425073.023.30$1,826
Dec 202342071.262.61$2,993
Nov 202328077.892.81$2,181
Oct 202328085.443.09$2,392
Sep 202331089.042.74$2,760
Aug 202335080.522.67$2,818
Jul 202330074.852.64$2,246
Jun 202329068.962.26$2,000
May 202328070.622.23$1,977
Apr 202327078.122.24$2,109
Mar 202323072.852.39$1,676
Feb 202334075.112.47$2,554
Jan 202334176.533.39$2,605
Dec 202216176.415.73$1,228
Nov 202235185.005.65$2,981
Oct 202233087.185.86$2,877
Sep 202222084.888.16$1,867
Aug 202221094.529.13$1,985
Jul 2022270101.587.54$2,743
Jun 2022191115.097.98$2,195
May 2022272109.378.43$2,970
Apr 2022404104.226.84$4,196
Mar 2022243108.885.08$2,628
Feb 202229291.054.86$2,650
Jan 202223381.844.54$1,896
Dec 202131371.323.90$2,223
Nov 202124377.435.24$1,874
Oct 202131379.795.71$2,491
Sep 202123369.865.35$1,623
Aug 202135466.024.22$2,328
Jul 202133470.783.98$2,352
Jun 202125869.493.38$1,764
May 202126763.483.02$1,672
Apr 202120660.362.76$1,224
Mar 202148461.302.72$2,953
Feb 202152257.805.55$3,017
Jan 202154250.412.81$2,728
Dec 2020251544.642.68$1,156
Nov 2020142638.772.71$613
Oct 2020172336.972.48$685
Sep 2020271837.091.99$1,037
Aug 2020171439.982.39$713
Jul 202017238.371.83$656
Jun 202011034.901.69$384
May 20208516.921.81$144
Apr 2020361014.751.80$549
Mar 2020181130.341.86$567
Feb 2020181349.881.98$924
Jan 2020341257.252.09$1,972
Dec 2019161459.012.30$976
Nov 2019251455.302.75$1,421
Oct 2019211353.472.42$1,154
Sep 2019241455.052.66$1,358
Aug 2019171453.112.30$935
Jul 2019191456.272.46$1,104
Jun 2019301452.782.49$1,618
May 2019351258.482.74$2,080
Apr 2019201062.632.75$1,280
Mar 2019291356.803.06$1,687
Feb 2019271250.852.79$1,406
Jan 2019271046.033.23$1,275
Dec 2018391446.594.19$1,876
Nov 2018451552.934.24$2,445
Oct 2018261461.443.40$1,645
Sep 2018231559.543.11$1,416
Aug 2018131659.403.07$821
Jul 2018141365.142.93$950
Jun 2018191560.183.08$1,190
May 2018181065.382.90$1,206
Apr 2018231363.842.90$1,506
Mar 2018171461.222.79$1,080
Feb 2018221361.782.77$1,395
Jan 2018161262.874.01$1,054
Dec 2017121357.272.92$725
Nov 20171611155.423.12$1,233
Oct 2017349349.292.98$1,953
Sep 2017165647.523.09$933
Aug 2017324845.373.00$1,596
Jul 2017213643.873.09$1,032
Jun 2017205642.493.09$1,023
May 2017205945.373.26$1,100
Apr 2017145647.933.21$851
Mar 2017235846.772.98$1,249
Feb 2017234650.452.95$1,296
Jan 2017195449.413.42$1,123
Dec 2016296848.763.72$1,667
Nov 2016216242.492.64$1,056
Oct 2016174946.193.09$937
Sep 2016143041.553.10$675
Aug 2016192441.442.92$858
Jul 2016352741.622.92$1,536
Jun 2016231745.352.69$1,089
May 2016211342.521.99$919
Apr 2016181736.561.99$692
Mar 2016202333.011.79$701
Feb 2016171726.472.06$485
Jan 2016181827.352.36$535
Dec 2015261832.362.00$877
Nov 2015161738.792.17$657
Oct 2015181743.552.43$825
Sep 2015211742.992.76$950
Aug 201530640.162.87$1,222
Jul 201519448.152.95$927
Jun 201520656.152.88$1,140
May 2015171655.212.96$986
Apr 2015161849.822.71$846
Mar 2015181442.892.93$813
Feb 2015131144.662.98$613
Jan 2015201343.433.10$909
Dec 201414954.693.59$798
Nov 20148070.464.25$564
Oct 20147078.303.90$548
Sep 201411186.164.05$952
Aug 201410489.394.04$910
Jul 201414096.564.18$1,352
Jun 2014171998.164.74$1,759
May 20149094.734.73$853
Apr 201492895.944.81$998
Mar 2014162995.895.06$1,681
Feb 2014262297.406.19$2,669
Jan 2014232690.404.86$2,206
Dec 2013212791.824.35$2,046
Nov 2013133088.853.74$1,267
Oct 2013183397.423.78$1,878
Sep 20133032104.113.72$3,242
Aug 20131833104.253.52$1,993
Jul 20131834102.523.72$1,972
Jun 2013133294.403.93$1,353
May 2013153194.834.15$1,551
Apr 2013122793.964.28$1,243
Mar 2013122693.623.91$1,225
Feb 201392391.233.42$900
Jan 2013112691.603.42$1,097
Dec 201272886.773.42$703
Nov 2012112686.953.62$1,051
Oct 2012122889.383.40$1,168
Sep 2012122694.672.92$1,212
Aug 2012112992.662.91$1,104
Jul 2012102985.133.02$939
Jun 2012122879.822.52$1,028
May 2012142991.612.49$1,355
Apr 20122429101.652.00$2,498
Mar 20122328105.052.22$2,478
Feb 20122325101.102.57$2,390
Jan 2012241798.092.73$2,401
Dec 201129296.873.24$2,816
Nov 201124295.723.31$2,304
Oct 201130884.983.65$2,579
Sep 2011251083.623.99$2,130
Aug 2011251283.404.15$2,135
Jul 2011201294.144.52$1,937
Jun 2011182192.904.64$1,770
May 2011211898.134.40$2,140
Apr 2011183105.964.33$1,920
Mar 201125096.364.06$2,409
Feb 201121085.644.18$1,798
Jan 201119086.504.59$1,644
Dec 201020285.734.35$1,723
Nov 201021480.843.80$1,713
Oct 201022578.103.51$1,736
Sep 2010201172.633.98$1,496
Aug 2010131073.684.42$1,002
Jul 2010201072.554.74$1,498
Jun 201022570.364.91$1,572
May 201029071.124.24$2,062
Apr 201034481.694.12$2,794
Mar 2010261778.394.39$2,113
Feb 2010531773.585.44$3,992
Jan 2010271774.365.96$2,109
Dec 2009363571.445.48$2,764
Nov 2009172374.593.75$1,354
Oct 2009233272.544.11$1,800
Sep 2009212765.543.06$1,459
Aug 2009222267.423.22$1,554
Jul 2009281961.133.46$1,777
Jun 2009282066.163.90$1,930
May 2009302254.743.93$1,729
Apr 2009271746.773.59$1,324
Mar 2009142042.144.06$671
Feb 2009301732.814.63$1,063
Jan 2009152435.865.37$667
Dec 2008132037.105.98$602
Nov 2008432055.496.86$2,523
Oct 2008511775.246.92$3,955
Sep 20088620101.767.88$8,909
Aug 200861114.228.48$694
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 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
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 20040045.286.33$0
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 20040034.475.86$0
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 20030029.415.17$0
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 20030030.315.58$0
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 20020024.583.06$0
Jun 20020023.733.34$0
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 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
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 20000029.644.54$0
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 19980012.622.21$0
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 19980013.952.30$0
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 19970019.253.15$0
Sep 19970017.742.95$0
Aug 19970017.862.55$0
Jul 19970017.582.25$0
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 19970023.483.54$0
Dec 19960023.32$0
Nov 19960021.97$0
Oct 19960023.31$0
Sep 19960022.22$0
Aug 19960020.26$0
Jul 19960019.55$0
Jun 19960018.73$0
May 19960019.43$0
Apr 19960021.51$0
Mar 19960019.38$0
Feb 19960016.98$0
Jan 19960017.07$0
Dec 19950017.19$0
Nov 19950016.00$0
Oct 19950015.43$0
Sep 19950016.18$0
Aug 19950015.92$0
Jul 19950015.24$0
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950016.44$0
Feb 19950016.58$0
Jan 19950015.92$0
Dec 19940015.03$0
Nov 19940015.90$0
Oct 19940015.58$0
Sep 19940015.29$0
Aug 19940016.13$0
Jul 19940017.56$0
Jun 19940017.09$0
May 19940015.88$0
Apr 19940014.14$0
Mar 19940012.46$0
Feb 19940012.50$0
Jan 19940012.66$0
Dec 19930012.33$0
Nov 19930014.49$0
Oct 19930015.85$0
Sep 19930015.03$0
Aug 19930015.66$0
Jul 19930015.46$0
Jun 19930016.79$0
May 19930017.68$0
Apr 19930018.05$0
Mar 19930018.14$0
Feb 19930017.90$0
Jan 19930016.93$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.

May 2026 — as filed, then multipliedworked
Oil                   32 bbl  × $106.41 =     $3,405
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                   $3,405

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/2487 is the state's own key, not one this site invented.