DUVAL RANCH 79 COLE -C- UNIT

Operated by KILLAM OIL CO., LTD. (P-5 460054) in the D C R-79 field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 7638District 04Field 22548001OilCasinghead gasSaveExport
Value, all time
$3.0 M
Jan 1993 – May 2026
Value, last 12 filed months
$94 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 8 leases and 37 wells, and the rule below applies to all of them.

Discovered
1948-08-18
as the register files it
Field class
Oil and gas
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 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
OilDisposition53,666 bbl$2,972,249
Casinghead gasProduction15 Mcf$0
Total$2,972,249

15 Mcf of this lease's gas, across 15 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 (18)

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 27.8805, -98.7182. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

27.87975, -98.71811 · 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
94.4%
17 of 18 wells
With a plug date
72.2%
13 of 18 wells
Median depth
1,549 ft
13 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
1794.4%
A plug date is filed
1372.2%
BothOn the schedule and plugged. Neither fact cancels the other.
1372.2%
NeitherNo plug date, and not on the schedule.
15.6%

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, 13 of 18 wells. Median 1,549 ft, with the middle half between 1,528 and 1,592 ft; the shallowest is 1,490 ft and the deepest 3,313 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

Plug dates filed
Apr 1975 – Mar 2010
13 of 18 wells; 5 filed none

18 wells

42-131054427912,539 ftMay 2007Yes
42-131054447931,528 ftMar 2010Yes
42-1310545126213,313 ftMar 1994Yes
42-1310545226221,555 ftNov 2006Yes
42-1310545426241,592 ftSep 2002Yes
42-1310545526251,603 ftOct 2006Yes
42-131054642611Yes
42-1310546626131,491 ftDec 1975Yes
42-131054672614Yes
42-1310546851,549 ftSep 1980Yes
42-131054692611HYes
42-131054702612HYes
42-131054712613H1,532 ftApr 1975Yes
42-131054768211,545 ftMay 2004Yes
42-131054778221,528 ftSep 2002Yes
42-131054788231,490 ftAug 2002Yes
42-1318188226271,571 ftMar 1984Yes
42-13105445794

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 20261090106.413.05$11,599
Apr 2026105098.932.87$10,388
Mar 2026110089.753.15$9,873
Feb 2026222063.503.75$14,097
Jan 2026106059.138.00$6,268
Dec 2025111056.664.41$6,289
Nov 20250058.593.93$0
Oct 2025190059.383.30$11,282
Sep 202596062.743.08$6,023
Aug 20250063.933.01$0
Jul 2025182066.743.32$12,147
Jun 202590066.483.13$5,983
May 202585060.553.23$5,147
Apr 202584062.363.54$5,238
Mar 2025156067.704.27$10,561
Feb 20250070.884.34$0
Jan 202583074.324.28$6,169
Dec 20240068.993.12$0
Nov 202475069.052.20$5,179
Oct 202483071.372.28$5,924
Sep 202490069.612.36$6,265
Aug 202492075.632.06$6,958
Jul 20240079.932.15$0
Jun 202493078.082.63$7,261
May 202491078.812.20$7,172
Apr 202488084.451.66$7,432
Mar 202496080.301.55$7,709
Feb 202493076.091.78$7,076
Jan 2024104073.023.30$7,594
Dec 2023114071.262.61$8,124
Nov 20230077.892.81$0
Oct 2023112085.443.09$9,569
Sep 2023111089.042.74$9,883
Aug 20230080.522.67$0
Jul 2023113074.852.64$8,458
Jun 2023109068.962.26$7,517
May 20230070.622.23$0
Apr 2023101078.122.24$7,890
Mar 202395072.852.39$6,921
Feb 202391075.112.47$6,835
Jan 202397076.533.39$7,423
Dec 2022201076.415.73$15,358
Nov 20220085.005.65$0
Oct 2022106087.185.86$9,241
Sep 2022112084.888.16$9,507
Aug 20220094.529.13$0
Jul 20221260101.587.54$12,799
Jun 20221270115.097.98$14,616
May 202200109.378.43$0
Apr 2022940104.226.84$9,797
Mar 2022950108.885.08$10,344
Feb 202292091.054.86$8,377
Jan 202294081.844.54$7,693
Dec 202193071.323.90$6,633
Nov 20210077.435.24$0
Oct 202192079.795.71$7,341
Sep 202185069.865.35$5,938
Aug 202170066.024.22$4,621
Jul 202178070.783.98$5,521
Jun 202184069.493.38$5,837
May 202184063.483.02$5,332
Apr 202183060.362.76$5,010
Mar 202188061.302.72$5,394
Feb 20210057.805.55$0
Jan 2021108050.412.81$5,444
Dec 2020115044.642.68$5,134
Nov 2020100038.772.71$3,877
Oct 2020102036.972.48$3,771
Sep 2020100037.091.99$3,709
Aug 202094039.982.39$3,758
Jul 2020106038.371.83$4,067
Jun 202077034.901.69$2,687
May 20200016.921.81$0
Apr 2020185014.751.80$2,729
Mar 202082030.341.86$2,488
Feb 202082049.881.98$4,090
Jan 2020159057.252.09$9,103
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 201995053.472.42$5,080
Sep 20190055.052.66$0
Aug 2019263053.112.30$13,968
Jul 201989056.272.46$5,008
Jun 20190052.782.49$0
May 201999058.482.74$5,790
Apr 201998062.632.75$6,138
Mar 2019298056.803.06$16,926
Feb 20190050.852.79$0
Jan 2019186046.033.23$8,562
Dec 20180046.594.19$0
Nov 201899052.934.24$5,240
Oct 2018198061.443.40$12,165
Sep 20180059.543.11$0
Aug 2018100059.403.07$5,940
Jul 201897065.142.93$6,319
Jun 2018194060.183.08$11,675
May 20180065.382.90$0
Apr 2018402063.842.90$25,664
Mar 2018100061.222.79$6,122
Feb 2018210061.782.77$12,974
Jan 2018102062.874.01$6,413
Dec 2017204057.272.92$11,683
Nov 2017104055.423.12$5,764
Oct 2017212049.292.98$10,449
Sep 2017107047.523.09$5,085
Aug 2017102045.373.00$4,628
Jul 2017211043.873.09$9,257
Jun 20170042.493.09$0
May 2017302045.373.26$13,702
Apr 2017103047.933.21$4,937
Mar 2017205046.772.98$9,588
Feb 20170050.452.95$0
Jan 2017105049.413.42$5,188
Dec 2016204048.763.72$9,947
Nov 2016104042.492.64$4,419
Oct 2016206046.193.09$9,515
Sep 2016201041.553.10$8,352
Aug 20160041.442.92$0
Jul 2016106041.622.92$4,412
Jun 2016102045.352.69$4,626
May 201698042.521.99$4,167
Apr 20160036.561.99$0
Mar 2016102033.011.79$3,367
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 201599032.362.00$3,204
Nov 2015203038.792.17$7,874
Oct 2015100043.552.43$4,355
Sep 2015191042.992.76$8,211
Aug 20150040.162.87$0
Jul 201598048.152.95$4,719
Jun 2015194056.152.88$10,893
May 20150055.212.96$0
Apr 201597049.822.71$4,833
Mar 2015198042.892.93$8,492
Feb 201598044.662.98$4,377
Jan 2015194043.433.10$8,425
Dec 201497054.693.59$5,305
Nov 20140070.464.25$0
Oct 201490078.303.90$7,047
Sep 2014192086.164.05$16,543
Aug 2014194089.394.04$17,342
Jul 201494096.564.18$9,077
Jun 201496098.164.74$9,423
May 2014228094.734.73$21,598
Apr 2014111095.944.81$10,649
Mar 2014110095.895.06$10,548
Feb 2014110097.406.19$10,714
Jan 2014110090.404.86$9,944
Dec 2013164091.824.35$15,058
Nov 201386088.853.74$7,641
Oct 2013164097.423.78$15,977
Sep 2013830104.113.72$8,641
Aug 2013820104.253.52$8,549
Jul 2013860102.523.72$8,817
Jun 2013204094.403.93$19,258
May 2013203094.834.15$19,250
Apr 2013102093.964.28$9,584
Mar 2013105093.623.91$9,830
Feb 2013208091.233.42$18,976
Jan 2013210091.603.42$19,236
Dec 2012193086.773.42$16,747
Nov 201295086.953.62$8,260
Oct 2012203089.383.40$18,144
Sep 201295094.672.92$8,994
Aug 2012101092.662.91$9,359
Jul 2012302085.133.02$25,709
Jun 20120079.822.52$0
May 2012199091.612.49$18,230
Apr 20122050101.652.00$20,838
Mar 2012950105.052.22$9,980
Feb 20122120101.102.57$21,433
Jan 2012209098.092.73$20,501
Dec 2011208096.873.24$20,149
Nov 2011102095.723.31$9,763
Oct 2011325084.983.65$27,619
Sep 2011110083.623.99$9,198
Aug 2011110083.404.15$9,174
Jul 2011313094.144.52$29,466
Jun 2011186092.904.64$17,279
May 2011188098.134.40$18,448
Apr 2011930105.964.33$9,854
Mar 2011181096.364.06$17,441
Feb 2011361085.644.18$30,916
Jan 2011178086.504.59$15,397
Dec 2010102085.734.35$8,744
Nov 2010284080.843.80$22,959
Oct 2010203078.103.51$15,854
Sep 2010189072.633.98$13,727
Aug 201096073.684.42$7,073
Jul 2010286072.554.74$20,749
Jun 201094070.364.91$6,614
May 2010284071.124.24$20,198
Apr 2010268081.694.12$21,893
Mar 2010397078.394.39$31,121
Feb 2010280073.585.44$20,602
Jan 2010261074.365.96$19,408
Dec 2009191071.445.48$13,645
Nov 2009199074.593.75$14,843
Oct 2009205072.544.11$14,871
Sep 200997065.543.06$6,357
Aug 2009196067.423.22$13,214
Jul 200998061.133.46$5,991
Jun 200988066.163.90$5,822
May 200993054.743.93$5,091
Apr 2009186046.773.59$8,699
Mar 200993042.144.06$3,919
Feb 2009180032.814.63$5,906
Jan 2009183035.865.37$6,562
Dec 200899037.105.98$3,673
Nov 200894055.496.86$5,216
Oct 2008185075.246.92$13,919
Sep 20081140101.767.88$11,601
Aug 20081110114.228.48$12,678
Jul 20082150131.0811.39$28,182
Jun 20082250131.3313.03$29,549
May 20082260123.1711.57$27,836
Apr 20082250110.3110.45$24,820
Mar 20083090101.909.66$31,487
Feb 2008151092.538.77$13,972
Jan 2008303090.388.21$27,385
Dec 2007446088.337.30$39,395
Nov 2007457091.677.29$41,893
Oct 2007307082.856.92$25,435
Sep 2007304075.846.24$23,055
Aug 2007286069.066.39$19,751
Jul 2007301070.906.39$21,341
Jun 2007264062.007.55$16,368
May 2007134058.747.85$7,871
Apr 2007654059.617.81$38,985
Mar 2007393056.927.30$22,370
Feb 2007255055.108.22$14,051
Jan 2007399050.306.73$20,070
Dec 2006264056.656.92$14,956
Nov 2006266054.207.62$14,417
Oct 2006393054.906.01$21,576
Sep 2006133060.085.04$7,991
Aug 2006268068.717.34$18,414
Jul 2006140069.376.34$9,712
Jun 2006383066.286.38$25,385
May 2006128066.016.42$8,449
Apr 2006129064.397.36$8,306
Mar 2006250056.707.08$14,175
Feb 2006247057.597.75$14,225
Jan 2006254060.598.93$15,390
Dec 2005127054.9413.42$6,977
Nov 2005130054.6910.59$7,110
Oct 2005126058.3413.80$7,351
Sep 2005378061.4512.08$23,228
Aug 2005257061.519.80$15,808
Jul 2005110055.697.84$6,126
Jun 2005248052.337.38$12,978
May 2005128045.226.65$5,788
Apr 2005122049.207.36$6,002
Mar 2005351050.377.15$17,680
Feb 2005121045.226.31$5,472
Jan 2005127043.166.32$5,481
Dec 2004254039.866.75$10,124
Nov 2004129045.286.33$5,841
Oct 2004247049.706.52$12,276
Sep 2004254043.245.28$10,983
Aug 2004251042.375.55$10,635
Jul 2004256038.286.08$9,800
Jun 2004258036.106.43$9,314
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 2003206030.266.30$6,234
Nov 2003100028.804.60$2,880
Oct 2003199028.174.76$5,606
Sep 2003205026.314.75$5,394
Aug 2003207029.765.13$6,160
Jul 2003204029.415.17$6,000
Jun 2003247028.565.98$7,054
May 2003381026.595.97$10,131
Apr 2003250026.675.41$6,668
Mar 2003378031.146.10$11,771
Feb 2003253033.487.93$8,470
Jan 200334030.315.58$1,031
Dec 2002176026.914.85$4,736
Nov 2002174024.664.14$4,291
Oct 2002170026.464.23$4,498
Sep 200287027.443.64$2,387
Aug 2002143025.963.16$3,712
Jul 2002345024.583.06$8,480
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 1996123021.97$2,702
Oct 199663023.31$1,469
Sep 1996127022.22$2,822
Aug 1996122020.26$2,472
Jul 1996253019.55$4,946
Jun 1996116018.73$2,173
May 1996129019.43$2,506
Apr 1996193021.51$4,151
Mar 1996202019.38$3,915
Feb 1996252016.98$4,279
Jan 1996110017.07$1,878
Dec 1995195017.19$3,352
Nov 1995136016.00$2,176
Oct 1995202015.43$3,117
Sep 1995192016.18$3,107
Aug 1995136015.92$2,165
Jul 1995255015.24$3,886
Jun 1995200016.41$3,282
May 1995187017.56$3,284
Apr 1995157017.73$2,784
Mar 1995147016.44$2,417
Feb 1995141016.58$2,338
Jan 1995140015.92$2,229
Dec 1994207015.03$3,111
Nov 1994211015.90$3,355
Oct 199490015.58$1,402
Sep 1994205115.29$3,134
Aug 1994205116.13$3,307
Jul 1994133117.56$2,335
Jun 1994333117.09$5,691
May 1994131115.88$2,080
Apr 1994363114.14$5,133
Mar 1994342112.46$4,261
Feb 1994691112.50$8,638
Jan 1994736112.66$9,318
Dec 1993735112.33$9,063
Nov 19930014.49$0
Oct 1993363015.85$5,754
Sep 1993544115.03$8,176
Aug 1993670115.66$10,492
Jul 1993521115.46$8,055
Jun 1993329116.79$5,524
May 1993617117.68$10,909
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                  109 bbl  × $106.41 =    $11,599
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $11,599

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. 04/O/7638 is the state's own key, not one this site invented.