KOLLER

Operated by N & O OIL CO. (P-5 598397) in the LEHN-APCO (1600) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 28482District 08Field 53000830Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$880 k
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 40 leases and 253 wells, and the rule below applies to all of them.

Discovered
1939-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres.

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.

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
OilDisposition19,022 bbl$879,579
Casinghead gasProduction324 Mcf$343
Total$879,922

232 Mcf of this lease's gas, across 47 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 (4)

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 31.1457, -102.6682. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

31.14542, -102.66863 · 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
25.0%
1 of 4 wells
With a plug date
25.0%
1 of 4 wells
Median depth
1,743 ft
4 wells filed one
Completion to plug
41.8 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
125.0%
A plug date is filed
125.0%
BothOn the schedule and plugged. Neither fact cancels the other.
125.0%
NeitherNo plug date, and not on the schedule.
375.0%

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 1,730 and 1,752 ft, median 1,743 ft, over the 4 wells that filed a depth.

Completions filed
Nov 1983 – Jun 1984
4 of 4 wells
Plug dates filed
Mar 2026
1 of 4 wells; 3 filed none

Last completion to plug: a median of 41.8 years across the 1 well that filed both dates, with the middle half between 41.8 years and 41.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-3713502541,750 ftJun 1984Mar 2026Yes
42-3713481331,730 ftApr 1984
42-3713462321,752 ftFeb 1984
42-3713449011,736 ftNov 1983

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 20260059.138.00$0
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 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 2024158068.993.12$10,900
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 20240078.082.63$0
May 20240078.812.20$0
Apr 2024170084.451.66$14,357
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 2023171071.262.61$12,185
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 2023162074.852.64$12,126
Jun 20230068.962.26$0
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 20221760108.885.08$19,163
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 2021168069.493.38$11,674
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 2020168038.772.71$6,513
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 2020175038.371.83$6,715
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 2019172053.472.42$9,197
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 2018172052.934.24$9,104
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 2018176063.842.90$11,236
Mar 20180061.222.79$0
Feb 2018176061.782.77$10,873
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 2017180045.373.00$8,167
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 2017172046.772.98$8,044
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 2016171046.193.09$7,898
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 2016167045.352.69$7,573
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 2016167033.011.79$5,513
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 2015159032.362.00$5,145
Nov 20150038.792.17$0
Oct 2015168043.552.43$7,316
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 2015166048.152.95$7,993
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 2015171049.822.71$8,519
Mar 2015169042.892.93$7,248
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 2014171089.394.04$15,286
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 2014158095.944.81$15,159
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 20131500102.523.72$15,378
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 2013163091.603.42$14,931
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 2012154085.133.02$13,110
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 20121710101.102.57$17,288
Jan 2012177098.092.73$17,362
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 2011166083.404.15$13,844
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 20111590105.964.33$16,848
Mar 20110096.364.06$0
Feb 2011160085.644.18$13,702
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 2010156078.103.51$12,184
Sep 20100072.633.98$0
Aug 2010160073.684.42$11,789
Jul 20100072.554.74$0
Jun 2010163070.364.91$11,469
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 2010164078.394.39$12,856
Feb 20100073.585.44$0
Jan 2010159074.365.96$11,823
Dec 20090071.445.48$0
Nov 2009160074.593.75$11,934
Oct 20090072.544.11$0
Sep 2009160065.543.06$10,486
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009163066.163.90$10,784
May 20090054.743.93$0
Apr 2009313046.773.59$14,639
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 2008162075.246.92$12,189
Sep 200800101.767.88$0
Aug 20081540114.228.48$17,590
Jul 20081620131.0811.39$21,235
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 20081550110.3110.45$17,098
Mar 200800101.909.66$0
Feb 2008155092.538.77$14,342
Jan 2008155090.388.21$14,009
Dec 20070088.337.30$0
Nov 2007163091.677.29$14,942
Oct 20070082.856.92$0
Sep 2007162075.846.24$12,286
Aug 2007156069.066.39$10,773
Jul 20070070.906.39$0
Jun 2007160062.007.55$9,920
May 2007157058.747.85$9,222
Apr 2007158059.617.81$9,418
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 2006156056.656.92$8,837
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 2006161068.717.34$11,062
Jul 2006155069.376.34$10,752
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 2006311064.397.36$20,025
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 2005268054.9413.42$14,724
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 2005150045.226.65$6,783
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 20040142.375.55$6
Jul 2004173138.286.08$6,629
Jun 2004169136.106.43$6,107
May 20040137.486.49$6
Apr 2004161134.475.86$5,556
Mar 20040134.365.53$6
Feb 20040132.455.51$6
Jan 20040132.036.30$6
Dec 2003150130.266.30$4,545
Nov 20030128.804.60$5
Oct 20030128.174.76$5
Sep 20030126.314.75$5
Aug 20030129.765.13$5
Jul 2003112129.415.17$3,299
Jun 20030128.565.98$6
May 20030126.595.97$6
Apr 2003169126.675.41$4,513
Mar 20030131.146.10$6
Feb 20030133.487.93$8
Jan 2003176130.315.58$5,340
Dec 20020126.914.85$5
Nov 20020124.664.14$4
Oct 20020126.464.23$4
Sep 20020127.443.64$4
Aug 20020125.963.16$3
Jul 20020124.583.06$3
Jun 20020123.733.34$3
May 2002171124.663.58$4,220
Apr 20020123.653.51$4
Mar 20020122.003.10$3
Feb 20020118.222.38$2
Jan 20020117.172.38$2
Dec 2001167116.932.36$2,830
Nov 20010118.072.41$2
Oct 20010119.782.53$3
Sep 20010124.262.25$2
Aug 20010124.873.05$3
Jul 20010123.933.20$3
Jun 20010124.563.82$4
May 2001161125.524.31$4,113
Apr 20010124.685.34$5
Mar 2001136124.545.38$3,343
Feb 20010127.755.77$6
Jan 20010127.478.40$8
Dec 20000126.889.12$9
Nov 2000304132.215.66$9,798
Oct 20000131.235.15$5
Sep 20000131.875.19$5
Aug 20000129.644.54$5
Jul 2000145128.534.09$4,141
Jun 20000129.304.40$4
May 2000177127.263.68$4,829
Apr 2000174124.513.12$4,268
Mar 20000128.422.86$3
Feb 20000127.622.73$3
Jan 20000125.272.48$2
Dec 19990124.282.42$2
Nov 19990123.192.43$2
Oct 1999165120.982.80$3,465
Sep 19990121.752.62$3
Aug 19990119.262.88$3
Jul 1999138117.892.37$2,471
Jun 1999174115.942.36$2,776
May 19990115.792.32$2
Apr 19990115.102.21$2
Mar 19990112.471.84$2
Feb 199916519.981.82$1,649
Jan 19990110.381.90$2
Dec 1998019.201.77$2
Nov 1998145110.892.19$1,581
Oct 1998151112.421.97$1,877
Sep 19980112.592.08$2
Aug 19980111.301.91$2
Jul 1998166111.742.24$1,951
Jun 19980111.242.24$2
May 199884112.622.21$1,062
Apr 19980113.042.51$3
Mar 19980112.802.31$2
Feb 1998172113.952.30$2,402
Jan 19980114.702.15$2
Dec 19970116.322.41$2
Nov 1997175118.193.09$3,186
Oct 1997170119.253.15$3,276
Sep 1997160117.742.95$2,841
Aug 19970117.862.55$3
Jul 19970117.582.25$2
Jun 1997145117.242.26$2,502
May 1997174118.972.31$3,303
Apr 19970117.882.08$2
Mar 1997174118.951.94$3,299
Feb 19970120.492.21$2
Jan 19970123.483.54$4
Dec 19960123.32$0
Nov 19960121.97$0
Oct 19960123.31$0
Sep 19960122.22$0
Aug 19960120.26$0
Jul 19960119.55$0
Jun 19960118.73$0
May 19960119.43$0
Apr 19960121.51$0
Mar 19960119.38$0
Feb 19960116.98$0
Jan 19960117.07$0
Dec 1995125117.19$2,149
Nov 19950016.00$0
Oct 1995165115.43$2,546
Sep 19950116.18$0
Aug 199553115.92$844
Jul 1995140115.24$2,134
Jun 199571116.41$1,165
May 1995115117.56$2,019
Apr 1995160117.73$2,837
Mar 1995168116.44$2,762
Feb 19950116.58$0
Jan 1995120115.92$1,910
Dec 1994101115.03$1,518
Nov 1994117115.90$1,860
Oct 1994117115.58$1,823
Sep 1994128115.29$1,957
Aug 1994104116.13$1,678
Jul 1994109117.56$1,914
Jun 1994155117.09$2,649
May 1994166115.88$2,636
Apr 1994162114.14$2,291
Mar 19940112.46$0
Feb 1994160112.50$2,000
Jan 1994165112.66$2,089
Dec 19930112.33$0
Nov 1993159114.49$2,304
Oct 1993138115.85$2,187
Sep 1993158115.03$2,375
Aug 1993155115.66$2,427
Jul 19930115.46$0
Jun 1993118116.79$1,981
May 1993138117.68$2,440
Apr 1993141118.05$2,545
Mar 1993143118.14$2,594
Feb 1993148117.90$2,649
Jan 199315918616.93$2,692

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.

Dec 2024 — as filed, then multipliedworked
Oil                  158 bbl  × $ 68.99 =    $10,900
Casinghead gas         0 Mcf  × $  3.12 =         $0

────────────────────────────────────────────────────
Month total                                  $10,900

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/28482 is the state's own key, not one this site invented.