BLALOCK "A"

Operated by COG OPERATING LLC (P-5 166150) in the BLALOCK (WOLFCAMP) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 33486District 08Field 08730700NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.0 M
Jan 1993 – May 2020
Value, last 12 filed months
$8 k
at the published price for each month
Months reported
329
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 24 leases and 25 wells, and the rule below applies to all of them.

Discovered
1983-12-09
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1984-06-01.

The Commission's schedule remark for this field reads: PER #8-82208 6-1-84

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA1none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition92,645 bbl$1,804,174
Casinghead gasProduction233,038 Mcf$166,950
Total$1,971,124

194,985 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 (2)

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 31.9534, -101.7155. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.6 miles.

31.95342, -101.71550 · 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
100.0%
2 of 2 wells
With a plug date
50.0%
1 of 2 wells
Median depth
9,998 ft
2 wells filed one
Completion to plug
29.9 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
2100.0%
A plug date is filed
150.0%
BothOn the schedule and plugged. Neither fact cancels the other.
150.0%
NeitherNo plug date, and not on the schedule.
00.0%

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 8,800 and 11,195 ft, median 9,998 ft, over the 2 wells that filed a depth.

Completions filed
Jul 1993 – Apr 1995
2 of 2 wells
Plug dates filed
Mar 2025
1 of 2 wells; 1 filed none

Last completion to plug: a median of 29.9 years across the 1 well that filed both dates, with the middle half between 29.9 years and 29.9 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-17332199211,195 ftApr 1995Mar 2025Yes
42-1733232838,800 ftJul 1993Yes

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 (329)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

329 months

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 2019139055.302.75$7,687
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 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 2018162061.443.40$9,953
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20182065.142.93$130
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 2018180061.222.79$11,020
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 20171045.373.26$45
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 201617117248.763.72$8,978
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 2016178041.553.10$7,396
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 2016171042.521.99$7,271
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 2016177026.472.06$4,685
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 2015169042.992.76$7,265
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
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 2014190089.394.04$16,984
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 2014182097.406.19$17,727
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 20131800102.523.72$18,454
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 2013183093.623.91$17,132
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 2012161094.672.92$15,242
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 20121820105.052.22$19,119
Feb 201210101.102.57$101
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20111095.723.31$96
Oct 2011180084.983.65$15,296
Sep 20110083.623.99$0
Aug 20112083.404.15$167
Jul 20110094.144.52$0
Jun 20112092.904.64$186
May 20110098.134.40$0
Apr 20111850105.964.33$19,603
Mar 20111096.364.06$96
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 2010183078.103.51$14,292
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 2010180071.124.24$12,802
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20101073.585.44$74
Jan 20100074.365.96$0
Dec 2009187071.445.48$13,359
Nov 20091074.593.75$75
Oct 20090072.544.11$0
Sep 20092065.543.06$131
Aug 20093067.423.22$202
Jul 20093061.133.46$183
Jun 20091066.163.90$66
May 20091054.743.93$55
Apr 20090046.773.59$0
Mar 20091862242.144.06$7,927
Feb 200917232.814.63$366
Jan 200914235.865.37$261
Dec 200813737.105.98$258
Nov 200827755.496.86$639
Oct 2008010875.246.92$748
Sep 200818575101.767.88$19,416
Aug 20080135114.228.48$1,145
Jul 20080159131.0811.39$1,811
Jun 20081161131.3313.03$2,230
May 20080131123.1711.57$1,516
Apr 20081118110.3110.45$1,344
Mar 20080150101.909.66$1,450
Feb 2008114292.538.77$1,338
Jan 2008114990.388.21$1,313
Dec 2007015388.337.30$1,117
Nov 200717915391.677.29$17,525
Oct 2007017082.856.92$1,177
Sep 2007317575.846.24$1,320
Aug 2007319369.066.39$1,440
Jul 2007014570.906.39$926
Jun 200718815962.007.55$12,856
May 2007516258.747.85$1,565
Apr 2007416859.617.81$1,550
Mar 2007116356.927.30$1,247
Feb 200718113755.108.22$11,099
Jan 2007815550.306.73$1,445
Dec 200615356.656.92$423
Nov 2006315454.207.62$1,336
Oct 200618216754.906.01$10,996
Sep 2006117160.085.04$921
Aug 2006117168.717.34$1,324
Jul 200618915169.376.34$14,069
Jun 2006017866.286.38$1,136
May 2006916966.016.42$1,680
Apr 200617916764.397.36$12,755
Mar 2006017056.707.08$1,204
Feb 2006015657.597.75$1,209
Jan 200617516960.598.93$12,113
Dec 2005017454.9413.42$2,334
Nov 2005117754.6910.59$1,929
Oct 2005019358.3413.80$2,663
Sep 2005121761.4512.08$2,683
Aug 200517927061.519.80$13,655
Jul 2005324155.697.84$2,057
Jun 200517322052.337.38$10,677
May 2005319345.226.65$1,419
Apr 2005018249.207.36$1,340
Mar 200518418350.377.15$10,577
Feb 2005016745.226.31$1,054
Jan 2005018543.166.32$1,170
Dec 200418918939.866.75$8,809
Nov 20041315445.286.33$1,564
Oct 2004018349.706.52$1,192
Sep 2004019443.245.28$1,025
Aug 200417821242.375.55$8,719
Jul 2004021038.286.08$1,278
Jun 200419420436.106.43$8,316
May 2004221937.486.49$1,497
Apr 2004021034.475.86$1,230
Mar 200417617734.365.53$7,026
Feb 2004020432.455.51$1,124
Jan 200417922232.036.30$7,132
Dec 2003123230.266.30$1,492
Nov 200318620128.804.60$6,280
Oct 2003025528.174.76$1,214
Sep 2003123626.314.75$1,147
Aug 200318623829.765.13$6,756
Jul 2003024629.415.17$1,272
Jun 200317923328.565.98$6,506
May 200318822526.595.97$6,343
Apr 2003024726.675.41$1,336
Mar 2003022131.146.10$1,347
Feb 200317720233.487.93$7,527
Jan 2003025830.315.58$1,440
Dec 2002021026.914.85$1,019
Nov 2002022924.664.14$947
Oct 200218026226.464.23$5,871
Sep 2002028127.443.64$1,021
Aug 200217829125.963.16$5,542
Jul 2002128924.583.06$909
Jun 200217727423.733.34$5,115
May 200217228324.663.58$5,256
Apr 200217720823.653.51$4,917
Mar 2002178022.003.10$3,916
Feb 20020018.222.38$0
Jan 2002179017.172.38$3,073
Dec 20012016.932.36$34
Nov 2001017218.072.41$414
Oct 2001016519.782.53$417
Sep 200117722724.262.25$4,805
Aug 200117128224.873.05$5,114
Jul 200117429323.933.20$5,101
Jun 2001027124.563.82$1,036
May 200117429825.524.31$5,724
Apr 2001024924.685.34$1,328
Mar 2001020824.545.38$1,118
Feb 2001012327.755.77$709
Jan 200117222427.478.40$6,606
Dec 200017024326.889.12$6,786
Nov 2000024332.215.66$1,375
Oct 2000025531.235.15$1,312
Sep 200017627231.875.19$7,020
Aug 2000030029.644.54$1,362
Jul 200017631028.534.09$6,289
Jun 2000025729.304.40$1,130
May 200017128827.263.68$5,721
Apr 200018229124.513.12$5,368
Mar 2000028928.422.86$826
Feb 200016025727.622.73$5,120
Jan 2000028625.272.48$709
Dec 1999028824.282.42$698
Nov 199918530523.192.43$5,033
Oct 199917233420.982.80$4,545
Sep 1999033821.752.62$885
Aug 199917636719.262.88$4,445
Jul 1999036417.892.37$864
Jun 199918135715.942.36$3,728
May 1999038215.792.32$887
Apr 199917037815.102.21$3,402
Mar 199917736612.471.84$2,880
Feb 199903379.981.82$613
Jan 199918338210.381.90$2,625
Dec 199823859.201.77$701
Nov 199819240110.892.19$2,967
Oct 199818843412.421.97$3,190
Sep 199818143012.592.08$3,174
Aug 199818144111.301.91$2,886
Jul 199817547811.742.24$3,124
Jun 1998247111.242.24$1,076
May 199817950112.622.21$3,364
Apr 199818048213.042.51$3,555
Mar 199818049412.802.31$3,445
Feb 1998146413.952.30$1,081
Jan 199819550214.702.15$3,948
Dec 199719948016.322.41$4,405
Nov 199719456118.193.09$5,261
Oct 199719661819.253.15$5,720
Sep 199719462217.742.95$5,280
Aug 199720261917.862.55$5,189
Jul 199720065817.582.25$4,994
Jun 199739061917.242.26$8,121
May 199719963118.972.31$5,232
Apr 199738358517.882.08$8,066
Mar 199719659118.951.94$4,860
Feb 199716353920.492.21$4,529
Jan 199738658623.483.54$11,138
Dec 1996270023.32$47
Nov 199620170221.97$4,416
Oct 199618771423.31$4,359
Sep 199638468222.22$8,532
Aug 199619173420.26$3,870
Jul 199635976319.55$7,018
Jun 19963733,35018.73$6,986
May 19961833,53619.43$3,556
Apr 19964014,09921.51$8,626
Mar 19962033,88519.38$3,934
Feb 19963993,76116.98$6,775
Jan 19963984,20917.07$6,794
Dec 19953884,34417.19$6,670
Nov 19953724,33116.00$5,952
Oct 19955564,79715.43$8,579
Sep 19953933,27216.18$6,359
Aug 19955633,82515.92$8,963
Jul 19953774,12515.24$5,745
Jun 19955564,13916.41$9,124
May 19955624,45017.56$9,869
Apr 19957534,53117.73$13,351
Mar 19957803,25916.44$12,823
Feb 19951,1003,12016.58$18,238
Jan 19951,1793,88815.92$18,770
Dec 19941,3584,02915.03$20,411
Nov 19941,3263,23215.90$21,083
Oct 19941,4953,68815.58$23,292
Sep 19941,5024,47615.29$22,966
Aug 19941,5034,61816.13$24,243
Jul 19941,8845,27117.56$33,083
Jun 19942,1595,19817.09$36,897
May 19942,4125,18415.88$38,303
Apr 19942,6206,54114.14$37,047
Mar 19943,3716,03812.46$42,003
Feb 19942,9753,78612.50$37,188
Jan 19942,4574,27312.66$31,106
Dec 19933,8846,50412.33$47,890
Nov 19935,8117,95614.49$84,201
Oct 19936,2568,44015.85$99,158
Sep 19936,5507,69015.03$98,447
Aug 19936,8137,70815.66$106,692
Jul 19933,8183,78815.46$59,026
Jun 19936142,46316.79$10,309
May 19936303,57517.68$11,138
Apr 19931,2404,07918.05$22,382
Mar 19931,3404,26018.14$24,308
Feb 19931,4473,06017.90$25,901
Jan 19931,9243,91216.93$32,573

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.

Nov 2019 — as filed, then multipliedworked
Oil                  139 bbl  × $ 55.30 =     $7,687
Casinghead gas         0 Mcf  × $  2.75 =         $0

────────────────────────────────────────────────────
Month total                                   $7,687

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. 08/O/33486 is the state's own key, not one this site invented.