COFFIELD

Operated by RUSK ENERGY OPERATING LLC (P-5 735144) in the MILBUR (NAVARRO) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4390District 01Field 61349333OilCasinghead gasSaveExport
Value, all time
$343 k
Jan 1993 – May 2026
Value, last 12 filed months
$17 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 41 leases and 57 wells, and the rule below applies to all of them.

Discovered
1960-04-04
as the register files it
Field class
Oil and gas
the register's own label
Between wells
933 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 1976-08-02.

The Commission's schedule remark for this field reads: WELL.

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
OilDisposition14,722 bbl$338,387
Casinghead gasProduction1,541 Mcf$5,051
Total$343,438

833 Mcf of this lease's gas, across 35 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.

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 202659089.753.15$5,295
Feb 20260063.503.75$0
Jan 202653059.138.00$3,134
Dec 20250056.664.41$0
Nov 202549058.593.93$2,871
Oct 202549059.383.30$2,910
Sep 202541062.743.08$2,572
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 202522060.553.23$1,332
Apr 20250062.363.54$0
Mar 202543067.704.27$2,911
Feb 2025103070.884.34$7,301
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 2024133078.082.63$10,385
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 2023119071.262.61$8,480
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 2023109068.962.26$7,517
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
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 202018039.982.39$720
Jul 20200038.371.83$0
Jun 20200034.901.69$0
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 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 201917053.112.30$903
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 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 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 201729055.423.12$1,607
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 201726045.373.26$1,180
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 201645041.442.92$1,865
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 201575048.152.95$3,611
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 201539042.892.93$1,673
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 20140089.394.04$0
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 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 201300102.523.72$0
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 20130091.603.42$0
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 20120085.133.02$0
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 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
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 20100078.103.51$0
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 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
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 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 20081900110.3110.45$20,959
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 2008021890.388.21$1,789
Dec 2007027988.337.30$2,037
Nov 2007012991.677.29$941
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 20030128.174.76$5
Sep 20030126.314.75$5
Aug 20030129.765.13$5
Jul 20030129.415.17$5
Jun 20030128.565.98$6
May 20030126.595.97$6
Apr 20030126.675.41$5
Mar 20030131.146.10$6
Feb 20030133.487.93$8
Jan 20030130.315.58$6
Dec 20020126.914.85$5
Nov 20020124.664.14$4
Oct 2002175126.464.23$4,635
Sep 20020127.443.64$4
Aug 20020125.963.16$3
Jul 20020124.583.06$3
Jun 2002180123.733.34$4,275
May 20020124.663.58$4
Apr 20020123.653.51$4
Mar 20020122.003.10$3
Feb 20020118.222.38$2
Jan 20020117.172.38$2
Dec 20010116.932.36$2
Nov 20010118.072.41$2
Oct 20010119.782.53$3
Sep 20010124.262.25$2
Aug 20010124.873.05$3
Jul 2001155123.933.20$3,712
Jun 20010124.563.82$4
May 2001178125.524.31$4,547
Apr 20010124.685.34$5
Mar 20010124.545.38$5
Feb 20010127.755.77$6
Jan 2001174127.478.40$4,788
Dec 20000126.889.12$9
Nov 20000132.215.66$6
Oct 2000185131.235.15$5,783
Sep 20000131.875.19$5
Aug 2000155129.644.54$4,599
Jul 20000128.534.09$4
Jun 2000188129.304.40$5,513
May 2000190127.263.68$5,183
Apr 20000124.513.12$3
Mar 20000128.422.86$3
Feb 2000180127.622.73$4,974
Jan 2000177125.272.48$4,475
Dec 19990124.282.42$2
Nov 1999166123.192.43$3,852
Oct 19990120.982.80$3
Sep 1999174121.752.62$3,787
Aug 1999175119.262.88$3,373
Jul 1999176117.892.37$3,151
Jun 1999176115.942.36$2,808
May 19990115.792.32$2
Apr 1999179115.102.21$2,705
Mar 19990112.471.84$2
Feb 199917919.981.82$1,788
Jan 19990110.381.90$2
Dec 1998019.201.77$2
Nov 1998180110.892.19$1,962
Oct 19980112.421.97$2
Sep 1998174112.592.08$2,193
Aug 1998168111.301.91$1,900
Jul 19980111.742.24$2
Jun 1998176111.242.24$1,980
May 1998179112.622.21$2,261
Apr 1998361113.042.51$4,710
Mar 19980112.802.31$2
Feb 1998181113.952.30$2,527
Jan 1998181114.702.15$2,663
Dec 1997168116.322.41$2,744
Nov 1997166118.193.09$3,023
Oct 1997184119.253.15$3,545
Sep 1997184117.742.95$3,267
Aug 1997176117.862.55$3,146
Jul 1997180117.582.25$3,167
Jun 1997182117.242.26$3,140
May 19970118.972.31$2
Apr 1997182117.882.08$3,256
Mar 1997184118.951.94$3,489
Feb 1997176120.492.21$3,608
Jan 1997176123.483.54$4,136
Dec 1996363123.32$8,465
Nov 1996359121.97$7,887
Oct 1996358123.31$8,345
Sep 1996180122.22$4,000
Aug 1996182120.26$3,687
Jul 1996182119.55$3,558
Jun 1996176118.73$3,296
May 1996182119.43$3,536
Apr 1996174121.51$3,743
Mar 19960119.38$0
Feb 19960116.98$0
Jan 19962489617.07$4,233
Dec 199536910717.19$6,343
Nov 199531811416.00$5,088
Oct 1995012015.43$0
Sep 199510612816.18$1,715
Aug 199503715.92$0
Jul 19950015.24$0
Jun 1995105016.41$1,723
May 19951298317.56$2,265
Apr 199510912117.73$1,933
Mar 1995214016.44$3,518
Feb 1995106016.58$1,757
Jan 1995103015.92$1,640
Dec 1994206015.03$3,096
Nov 199499015.90$1,574
Oct 1994106015.58$1,651
Sep 1994206115.29$3,150
Aug 19940016.13$0
Jul 19940017.56$0
Jun 19940017.09$0
May 19940015.88$0
Apr 19940014.14$0
Mar 1994130112.46$1,620
Feb 1994104112.50$1,300
Jan 1994112112.66$1,418
Dec 1993106112.33$1,307
Nov 1993106114.49$1,536
Oct 1993211115.85$3,344
Sep 1993208115.03$3,126
Aug 1993276115.66$4,322
Jul 1993165115.46$2,551
Jun 1993101116.79$1,696
May 1993209117.68$3,695
Apr 19930118.05$0
Mar 1993203118.14$3,682
Feb 1993204117.90$3,652
Jan 199368116.93$1,151

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.

Mar 2026 — as filed, then multipliedworked
Oil                   59 bbl  × $ 89.75 =     $5,295
Casinghead gas         0 Mcf  × $  3.15 =         $0

────────────────────────────────────────────────────
Month total                                   $5,295

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/4390 is the state's own key, not one this site invented.