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COSEY-DORN -A-

Operated by MILLENNIUM EXPLORATION CO. LLC (P-5 567496) in the LULING-BRANYON field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 7057District 01Field 55679001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$698 k
Jan 1993 – May 2026
Value, last 12 filed months
$18 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The LULING-BRANYON 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 507 leases and 2,955 wells, and the rule below applies to all of them.

Discovered
1922-08-08
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
150 ft
minimum

A drilling unit in this field needs at least 2 acres. The field rule took effect on 2018-06-19.

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: “CORRELATIVE INTERVAL 1620' - 2164'”

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
OilDisposition15,222 bbl$697,540
Casinghead gasProduction20 Mcf$0
Total$697,540

20 Mcf of this lease's gas, across 20 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 (21)

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 29.7374, -97.7203. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

29.73676, -97.72083 · 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
76.2%
16 of 21 wells
With a plug date
76.2%
16 of 21 wells
Median depth
2,066 ft
21 wells filed one
Completion to plug
40.5 years
median over 5 wells

What the state filed about each well

On the RRC proration schedule
1676.2%
A plug date is filed
1676.2%
BothOn the schedule and plugged. Neither fact cancels the other.
1676.2%
NeitherNo plug date, and not on the schedule.
523.8%

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, 21 of 21 wells. Median 2,066 ft, with the middle half between 2,059 and 2,129 ft; the shallowest is 2,018 ft and the deepest 2,176 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, 10 of 21 wells, Jan 1978 – Dec 1991. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jan 1978 – Dec 1991
10 of 21 wells; 11 filed none
Plug dates filed
Jun 2019 – Dec 2024
16 of 21 wells; 5 filed none

Last completion to plug: a median of 40.5 years across the 5 wells that filed both dates, with the middle half between 37.8 years and 40.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

21 wells

42-05531947122,059 ft—Jun 2019Yes
42-05532037182,146 ft—Feb 2022Yes
42-05532039152,115 ft—Dec 2024Yes
42-05532040162,129 ft—Dec 2024Yes
42-05532050112,105 ft—Jun 2019Yes
42-05532083102,018 ft—Jun 2019Yes
42-0553208482,060 ft—Jun 2019Yes
42-0553208642,060 ft—Jun 2019Yes
42-05532088142,084 ft—Feb 2022Yes
42-05532090132,176 ft—Jun 2019Yes
42-0553210392,059 ft—Dec 2024Yes
42-05531098202,066 ftDec 1991——
42-0553193972,078 ftAug 1981Jun 2019Yes
42-0553194062,058 ftAug 1981Feb 2022Yes
42-0553208732,058 ftAug 1981Jun 2019Yes
42-0553209222,048 ftAug 1981Feb 2022Yes
42-05532036192,139 ftAug 1981——
42-05532038172,156 ftJul 1981——
42-0553208912,019 ftJul 1981——
42-0553194152,134 ftMay 1981Dec 2024Yes
42-05531099212,060 ftJan 1978——

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 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 2026127059.138.00$7,510
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 2025152066.483.13$10,105
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 2025159070.884.34$11,270
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 2024182069.612.36$12,669
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 2024168084.451.66$14,188
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 2023171078.122.24$13,359
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 2022150076.415.73$11,462
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 2022180084.888.16$15,278
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 20221840115.097.98$21,177
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 2022180091.054.86$16,389
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 2021182079.795.71$14,522
Sep 2021185069.865.35$12,924
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 2020185034.901.69$6,457
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 2019176059.012.30$10,386
Nov 2019163055.302.75$9,014
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 2019149056.803.06$8,463
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 2018152052.934.24$8,045
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 2018175063.842.90$11,172
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017170057.272.92$9,736
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 2017160045.373.26$7,259
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 2016192048.763.72$9,362
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
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 2014159078.303.90$12,450
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 2014175096.564.18$16,898
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 2014149095.895.06$14,288
Feb 20140097.406.19$0
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 20131580102.523.72$16,198
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 2013159091.603.42$14,564
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 2012161085.133.02$13,706
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 2011147084.983.65$12,492
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 2011155098.134.40$15,210
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 2010144078.103.51$11,246
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009151066.163.90$9,990
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 2009154035.865.37$5,522
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 20081530131.0811.39$20,055
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 20081440110.3110.45$15,885
Mar 200800101.909.66$0
Feb 2008152092.538.77$14,065
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 2007155082.856.92$12,842
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007156058.747.85$9,163
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 2006155054.207.62$8,401
Oct 20060054.906.01$0
Sep 2006153060.085.04$9,192
Aug 2006156068.717.34$10,719
Jul 2006162069.376.34$11,238
Jun 20060066.286.38$0
May 2006151066.016.42$9,968
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 2005162054.6910.59$8,860
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 2004147049.706.52$7,306
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 2004110036.106.43$3,971
May 20040037.486.49$0
Apr 2004139034.475.86$4,791
Mar 20040034.365.53$0
Feb 200452032.455.51$1,687
Jan 20040032.036.30$0
Dec 200395030.266.30$2,875
Nov 2003177028.804.60$5,098
Oct 20030028.174.76$0
Sep 2003158026.314.75$4,157
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 2003175028.565.98$4,998
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 200394031.146.10$2,927
Feb 20030033.487.93$0
Jan 2003176030.315.58$5,335
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 2002175027.443.64$4,802
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 2002145024.663.58$3,576
Apr 20020023.653.51$0
Mar 2002176022.003.10$3,872
Feb 20020018.222.38$0
Jan 2002178017.172.38$3,056
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 2001175024.262.25$4,246
Aug 2001174024.873.05$4,327
Jul 20010023.933.20$0
Jun 2001174024.563.82$4,273
May 20010025.524.31$0
Apr 2001175024.685.34$4,319
Mar 20010024.545.38$0
Feb 2001175027.755.77$4,856
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 2000175032.215.66$5,637
Oct 2000153031.235.15$4,778
Sep 20000031.875.19$0
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 2000165029.304.40$4,835
May 2000164027.263.68$4,471
Apr 20000024.513.12$0
Mar 2000155028.422.86$4,405
Feb 2000176027.622.73$4,861
Jan 2000175025.272.48$4,422
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 1999114017.892.37$2,039
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 1998163010.892.19$1,775
Oct 19980012.421.97$0
Sep 199886012.592.08$1,083
Aug 19980011.301.91$0
Jul 19980011.742.24$0
Jun 1998166011.242.24$1,866
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 1997175017.862.55$3,126
Jul 199734017.582.25$598
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 199732017.882.08$572
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 1997145023.483.54$3,405
Dec 19960023.32—$0
Nov 19960021.97—$0
Oct 19960023.31—$0
Sep 1996157022.22—$3,489
Aug 1996178020.26—$3,606
Jul 19960019.55—$0
Jun 19960018.73—$0
May 19960019.43—$0
Apr 19960021.51—$0
Mar 1996162019.38—$3,140
Feb 19960016.98—$0
Jan 19960017.07—$0
Dec 1995269017.19—$4,624
Nov 19950016.00—$0
Oct 19950015.43—$0
Sep 19950016.18—$0
Aug 1995166015.92—$2,643
Jul 19950015.24—$0
Jun 19950016.41—$0
May 1995194017.56—$3,407
Apr 19950017.73—$0
Mar 1995185016.44—$3,041
Feb 19950016.58—$0
Jan 1995183015.92—$2,913
Dec 19940015.03—$0
Nov 19940015.90—$0
Oct 1994178015.58—$2,773
Sep 19940015.29—$0
Aug 19940116.13—$0
Jul 1994187117.56—$3,284
Jun 19940117.09—$0
May 19940115.88—$0
Apr 1994185114.14—$2,616
Mar 1994125112.46—$1,558
Feb 19940112.50—$0
Jan 1994106112.66—$1,342
Dec 19930112.33—$0
Nov 1993180114.49—$2,608
Oct 19930115.85—$0
Sep 19930115.03—$0
Aug 1993266115.66—$4,166
Jul 1993148115.46—$2,288
Jun 19930116.79—$0
May 19930117.68—$0
Apr 1993149118.05—$2,689
Mar 1993152118.14—$2,757
Feb 19930117.90—$0
Jan 1993151116.93—$2,556

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.

Jan 2026 — as filed, then multipliedworked
Oil                  127 bbl  × $ 59.13 =     $7,510
Casinghead gas         0 Mcf  × $  8.00 =         $0

────────────────────────────────────────────────────
Month total                                   $7,510

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/7057 is the state's own key, not one this site invented.