DUVAL CO. RANCH CO. -D-

Operated by CARIBBEAN ENERGY LLC II (P-5 131762) in the COLMENA field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 556District 04Field 19730001OilCasinghead gasSaveExport
Value, all time
$5.0 M
Jan 1993 – May 2026
Value, last 12 filed months
$74 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 13 leases and 87 wells, and the rule below applies to all of them.

Discovered
1936-08-12
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 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
OilDisposition101,944 bbl$5,029,020
Casinghead gasProduction20 Mcf$0
Total$5,029,020

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 (17)

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 27.7884, -98.7199. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

27.78871, -98.72025 · 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
58.8%
10 of 17 wells
With a plug date
58.8%
10 of 17 wells
Median depth
1,433 ft
13 wells filed one
Completion to plug
27.2 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
1058.8%
A plug date is filed
1058.8%
BothOn the schedule and plugged. Neither fact cancels the other.
1058.8%
NeitherNo plug date, and not on the schedule.
741.2%

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 17 wells. Median 1,433 ft, with the middle half between 1,428 and 1,487 ft; the shallowest is 1,420 ft and the deepest 2,432 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, 11 of 17 wells, Jul 1951 – Apr 2001. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jul 1951 – Apr 2001
11 of 17 wells; 6 filed none
Plug dates filed
Aug 1987 – Aug 2016
10 of 17 wells; 7 filed none

Last completion to plug: a median of 27.2 years across the 8 wells that filed both dates, with the middle half between 24.2 years and 27.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

17 wells

42-13106242111,420 ftSep 1992Yes
42-13106243121,425 ftAug 1987Yes
42-131062409
42-1318025813
42-1318025918
42-1318026120
42-1310624110W1,520 ftApr 2001Aug 2016Yes
42-1310624817W1,427 ftApr 2001Jan 2003Yes
42-13136662231,494 ftMar 1985
42-1310624615W1,428 ftJan 1961May 1994Yes
42-1310625322W2,432 ftDec 1960
42-131062398W1,438 ftOct 1960Dec 1987Yes
42-131062387W1,441 ftOct 1960Nov 1987Yes
42-131062354W1,487 ftOct 1960Nov 1987Yes
42-1310625221W1,431 ftSep 1960Nov 1987Yes
42-1310624514W1,428 ftOct 1959Nov 1987Yes
42-13180260191,433 ftJul 1951

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 20261550106.413.05$16,494
Apr 2026160098.932.87$15,829
Mar 2026104089.753.15$9,334
Feb 2026146063.503.75$9,271
Jan 2026149059.138.00$8,810
Dec 2025159056.664.41$9,009
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 202585062.743.08$5,333
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 2024305068.993.12$21,042
Nov 2024308069.052.20$21,267
Oct 20240071.372.28$0
Sep 202491069.612.36$6,335
Aug 2024249075.632.06$18,832
Jul 2024154079.932.15$12,309
Jun 2024152078.082.63$11,868
May 2024154078.812.20$12,137
Apr 2024307084.451.66$25,926
Mar 2024154080.301.55$12,366
Feb 2024157076.091.78$11,946
Jan 20240073.023.30$0
Dec 2023278071.262.61$19,810
Nov 2023154077.892.81$11,995
Oct 2023155085.443.09$13,243
Sep 2023101089.042.74$8,993
Aug 2023148080.522.67$11,917
Jul 2023155074.852.64$11,602
Jun 2023308068.962.26$21,240
May 20230070.622.23$0
Apr 2023153078.122.24$11,952
Mar 20230072.852.39$0
Feb 2023158075.112.47$11,867
Jan 2023154076.533.39$11,786
Dec 2022154076.415.73$11,767
Nov 2022473085.005.65$40,205
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 2022153094.529.13$14,462
Jul 20221580101.587.54$16,050
Jun 20223090115.097.98$35,563
May 20221560109.378.43$17,062
Apr 2022270104.226.84$2,814
Mar 20224590108.885.08$49,976
Feb 2022306091.054.86$27,861
Jan 2022155081.844.54$12,685
Dec 2021461071.323.90$32,879
Nov 2021152077.435.24$11,769
Oct 2021315079.795.71$25,134
Sep 2021308069.865.35$21,517
Aug 2021320066.024.22$21,126
Jul 2021311070.783.98$22,013
Jun 2021316069.493.38$21,959
May 2021165063.483.02$10,474
Apr 2021321060.362.76$19,376
Mar 2021159061.302.72$9,747
Feb 2021253057.805.55$14,623
Jan 2021324050.412.81$16,333
Dec 2020482044.642.68$21,516
Nov 2020164038.772.71$6,358
Oct 2020325036.972.48$12,015
Sep 2020323037.091.99$11,980
Aug 2020158039.982.39$6,317
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020153030.341.86$4,642
Feb 2020154049.881.98$7,682
Jan 2020155057.252.09$8,874
Dec 2019154059.012.30$9,088
Nov 2019310055.302.75$17,143
Oct 2019316053.472.42$16,897
Sep 2019312055.052.66$17,176
Aug 2019153053.112.30$8,126
Jul 2019315056.272.46$17,725
Jun 2019159052.782.49$8,392
May 20190058.482.74$0
Apr 2019316062.632.75$19,791
Mar 2019471056.803.06$26,753
Feb 2019155050.852.79$7,882
Jan 2019307046.033.23$14,131
Dec 2018466046.594.19$21,711
Nov 2018308052.934.24$16,302
Oct 2018148061.443.40$9,093
Sep 2018304059.543.11$18,100
Aug 2018159059.403.07$9,445
Jul 2018311065.142.93$20,259
Jun 2018165060.183.08$9,930
May 2018316065.382.90$20,660
Apr 2018467063.842.90$29,813
Mar 2018306061.222.79$18,733
Feb 2018157061.782.77$9,699
Jan 2018317062.874.01$19,930
Dec 2017317057.272.92$18,155
Nov 2017313055.423.12$17,346
Oct 2017161049.292.98$7,936
Sep 2017159047.523.09$7,556
Aug 2017156045.373.00$7,078
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 2017162045.373.26$7,350
Apr 2017155047.933.21$7,429
Mar 2017161046.772.98$7,530
Feb 20170050.452.95$0
Jan 2017311049.413.42$15,367
Dec 2016160048.763.72$7,802
Nov 2016157042.492.64$6,671
Oct 2016157046.193.09$7,252
Sep 2016317041.553.10$13,171
Aug 20160041.442.92$0
Jul 2016466041.622.92$19,395
Jun 2016157045.352.69$7,120
May 2016311042.521.99$13,224
Apr 2016305036.561.99$11,151
Mar 2016482033.011.79$15,911
Feb 2016317026.472.06$8,391
Jan 2016462027.352.36$12,636
Dec 2015478032.362.00$15,468
Nov 2015152038.792.17$5,896
Oct 2015322043.552.43$14,023
Sep 2015463042.992.76$19,904
Aug 2015465040.162.87$18,674
Jul 2015300048.152.95$14,445
Jun 2015150056.152.88$8,423
May 2015297055.212.96$16,397
Apr 2015454049.822.71$22,618
Mar 2015299042.892.93$12,824
Feb 2015450044.662.98$20,097
Jan 2015302043.433.10$13,116
Dec 2014441054.693.59$24,118
Nov 2014447070.464.25$31,496
Oct 2014448078.303.90$35,078
Sep 2014296086.164.05$25,503
Aug 2014449089.394.04$40,136
Jul 2014295096.564.18$28,485
Jun 20140098.164.74$0
May 2014603094.734.73$57,122
Apr 2014156095.944.81$14,967
Mar 2014298095.895.06$28,575
Feb 2014586097.406.19$57,076
Jan 2014152090.404.86$13,741
Dec 2013296091.824.35$27,179
Nov 2013151088.853.74$13,416
Oct 2013155097.423.78$15,100
Sep 20134520104.113.72$47,058
Aug 20131460104.253.52$15,221
Jul 20134520102.523.72$46,339
Jun 2013451094.403.93$42,574
May 2013156094.834.15$14,793
Apr 2013315093.964.28$29,597
Mar 2013450093.623.91$42,129
Feb 2013452091.233.42$41,236
Jan 2013433091.603.42$39,663
Dec 2012457086.773.42$39,654
Nov 2012309086.953.62$26,868
Oct 2012308089.383.40$27,529
Sep 2012313094.672.92$29,632
Aug 2012314092.662.91$29,095
Jul 2012312085.133.02$26,561
Jun 2012463079.822.52$36,957
May 2012149091.612.49$13,650
Apr 20124750101.652.00$48,284
Mar 20123050105.052.22$32,040
Feb 20124800101.102.57$48,528
Jan 2012308098.092.73$30,212
Dec 2011323096.873.24$31,289
Nov 2011321095.723.31$30,726
Oct 2011449084.983.65$38,156
Sep 2011150083.623.99$12,543
Aug 2011315083.404.15$26,271
Jul 2011317094.144.52$29,842
Jun 2011321092.904.64$29,821
May 2011303098.134.40$29,733
Apr 20114460105.964.33$47,258
Mar 2011309096.364.06$29,775
Feb 2011301085.644.18$25,778
Jan 2011463086.504.59$40,050
Dec 2010297085.734.35$25,462
Nov 2010301080.843.80$24,333
Oct 2010456078.103.51$35,614
Sep 2010154072.633.98$11,185
Aug 2010313073.684.42$23,062
Jul 2010156072.554.74$11,318
Jun 2010303070.364.91$21,319
May 2010157071.124.24$11,166
Apr 2010310081.694.12$25,324
Mar 2010453078.394.39$35,511
Feb 2010158073.585.44$11,626
Jan 2010313074.365.96$23,275
Dec 2009163071.445.48$11,645
Nov 2009308074.593.75$22,974
Oct 2009299072.544.11$21,689
Sep 2009312065.543.06$20,448
Aug 2009446067.423.22$30,069
Jul 2009310061.133.46$18,950
Jun 2009315066.163.90$20,840
May 2009318054.743.93$17,407
Apr 2009461046.773.59$21,561
Mar 2009304042.144.06$12,811
Feb 2009162032.814.63$5,315
Jan 2009308035.865.37$11,045
Dec 2008157037.105.98$5,825
Nov 2008163055.496.86$9,045
Oct 2008313075.246.92$23,550
Sep 20084710101.767.88$47,929
Aug 20081480114.228.48$16,905
Jul 20081560131.0811.39$20,448
Jun 20081510131.3313.03$19,831
May 20083070123.1711.57$37,813
Apr 200800110.3110.45$0
Mar 20081660101.909.66$16,915
Feb 2008311092.538.77$28,777
Jan 20080090.388.21$0
Dec 2007308088.337.30$27,206
Nov 2007153091.677.29$14,026
Oct 20070082.856.92$0
Sep 2007317075.846.24$24,041
Aug 2007156069.066.39$10,773
Jul 20070070.906.39$0
Jun 2007151062.007.55$9,362
May 2007152058.747.85$8,928
Apr 2007151059.617.81$9,001
Mar 2007154056.927.30$8,766
Feb 2007163055.108.22$8,981
Jan 20070050.306.73$0
Dec 2006154056.656.92$8,724
Nov 2006154054.207.62$8,347
Oct 2006164054.906.01$9,004
Sep 2006159060.085.04$9,553
Aug 20060068.717.34$0
Jul 2006155069.376.34$10,752
Jun 2006160066.286.38$10,605
May 2006149066.016.42$9,835
Apr 2006162064.397.36$10,431
Mar 2006156056.707.08$8,845
Feb 2006145057.597.75$8,351
Jan 20060060.598.93$0
Dec 2005151054.9413.42$8,296
Nov 20050054.6910.59$0
Oct 2005159058.3413.80$9,276
Sep 2005156061.4512.08$9,586
Aug 2005308061.519.80$18,945
Jul 20050055.697.84$0
Jun 2005165052.337.38$8,634
May 2005157045.226.65$7,100
Apr 20050049.207.36$0
Mar 2005157050.377.15$7,908
Feb 2005153045.226.31$6,919
Jan 2005158043.166.32$6,819
Dec 2004320039.866.75$12,755
Nov 20040045.286.33$0
Oct 2004313049.706.52$15,556
Sep 20040043.245.28$0
Aug 2004310042.375.55$13,135
Jul 2004156038.286.08$5,972
Jun 2004164036.106.43$5,920
May 2004313037.486.49$11,731
Apr 2004316034.475.86$10,893
Mar 20040034.365.53$0
Feb 2004313032.455.51$10,157
Jan 20040032.036.30$0
Dec 2003161030.266.30$4,872
Nov 2003164028.804.60$4,723
Oct 20030028.174.76$0
Sep 2003166026.314.75$4,367
Aug 2003339029.765.13$10,089
Jul 2003340029.415.17$9,999
Jun 2003164028.565.98$4,684
May 2003154026.595.97$4,095
Apr 2003162026.675.41$4,321
Mar 2003324031.146.10$10,089
Feb 20030033.487.93$0
Jan 2003157030.315.58$4,759
Dec 2002158026.914.85$4,252
Nov 2002331024.664.14$8,162
Oct 2002159026.464.23$4,207
Sep 2002170027.443.64$4,665
Aug 2002165025.963.16$4,283
Jul 2002330024.583.06$8,111
Jun 20020023.733.34$0
May 2002334024.663.58$8,236
Apr 2002167023.653.51$3,950
Mar 2002167022.003.10$3,674
Feb 2002173018.222.38$3,152
Jan 2002351017.172.38$6,027
Dec 2001330016.932.36$5,587
Nov 20010018.072.41$0
Oct 2001331019.782.53$6,547
Sep 2001164024.262.25$3,979
Aug 2001341024.873.05$8,481
Jul 2001166023.933.20$3,972
Jun 2001166024.563.82$4,077
May 2001333025.524.31$8,498
Apr 2001177024.685.34$4,368
Mar 2001162024.545.38$3,975
Feb 2001325027.755.77$9,019
Jan 2001166027.478.40$4,560
Dec 2000336026.889.12$9,032
Nov 2000331032.215.66$10,662
Oct 2000166031.235.15$5,184
Sep 2000162031.875.19$5,163
Aug 2000337029.644.54$9,989
Jul 2000165028.534.09$4,707
Jun 2000334029.304.40$9,786
May 2000338027.263.68$9,214
Apr 2000170024.513.12$4,167
Mar 2000322028.422.86$9,151
Feb 2000166027.622.73$4,585
Jan 2000316025.272.48$7,985
Dec 1999323024.282.42$7,842
Nov 1999320023.192.43$7,421
Oct 1999334020.982.80$7,007
Sep 1999328021.752.62$7,134
Aug 1999323019.262.88$6,221
Jul 1999512017.892.37$9,160
Jun 19990015.942.36$0
May 1999315015.792.32$4,974
Apr 1999331015.102.21$4,998
Mar 1999158012.471.84$1,970
Feb 199934309.981.82$3,423
Jan 1999321010.381.90$3,332
Dec 199816809.201.77$1,546
Nov 1998326010.892.19$3,550
Oct 1998321012.421.97$3,987
Sep 1998308012.592.08$3,878
Aug 1998164011.301.91$1,853
Jul 1998322011.742.24$3,780
Jun 1998318011.242.24$3,574
May 1998157012.622.21$1,981
Apr 1998486013.042.51$6,337
Mar 1998155012.802.31$1,984
Feb 1998325013.952.30$4,534
Jan 1998486014.702.15$7,144
Dec 1997616016.322.41$10,053
Nov 1997147018.193.09$2,674
Oct 1997468019.253.15$9,009
Sep 1997467017.742.95$8,285
Aug 1997308017.862.55$5,501
Jul 1997604017.582.25$10,618
Jun 1997444017.242.26$7,655
May 1997154018.972.31$2,921
Apr 1997457017.882.08$8,171
Mar 1997309018.951.94$5,856
Feb 1997447020.492.21$9,159
Jan 1997307023.483.54$7,208
Dec 1996455023.32$10,611
Nov 1996308021.97$6,767
Oct 1996478023.31$11,142
Sep 1996334022.22$7,421
Aug 1996486020.26$9,846
Jul 1996494019.55$9,658
Jun 1996328018.73$6,143
May 1996505019.43$9,812
Apr 1996342021.51$7,356
Mar 1996331019.38$6,415
Feb 1996320016.98$5,434
Jan 1996494017.07$8,433
Dec 1995327017.19$5,621
Nov 1995349016.00$5,584
Oct 1995154015.43$2,376
Sep 1995344016.18$5,566
Aug 1995468015.92$7,451
Jul 1995327015.24$4,983
Jun 1995705016.41$11,569
May 1995177017.56$3,108
Apr 1995519017.73$9,202
Mar 1995684016.44$11,245
Feb 1995352016.58$5,836
Jan 1995397015.92$6,320
Dec 1994296015.03$4,449
Nov 1994414015.90$6,583
Oct 1994401015.58$6,248
Sep 1994399015.29$6,101
Aug 1994397116.13$6,404
Jul 1994412117.56$7,235
Jun 19940117.09$0
May 1994403115.88$6,400
Apr 1994413114.14$5,840
Mar 1994384112.46$4,785
Feb 1994405112.50$5,063
Jan 1994398112.66$5,039
Dec 1993303112.33$3,736
Nov 1993401114.49$5,810
Oct 1993408115.85$6,467
Sep 1993400115.03$6,012
Aug 1993410115.66$6,421
Jul 1993406115.46$6,277
Jun 1993397116.79$6,666
May 1993417117.68$7,373
Apr 1993408118.05$7,364
Mar 1993381118.14$6,911
Feb 1993425117.90$7,608
Jan 1993401116.93$6,789

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                  155 bbl  × $106.41 =    $16,494
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $16,494

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/556 is the state's own key, not one this site invented.