SHACKELFORD, DON C.

Operated by RIO BRAVO PRODUCTION, LLC (P-5 100759) in the ANTELOPE, EAST (BRYSON) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 17866District 09Field 03083500OilCasinghead gasSave
Value, all time
$1.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$68 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition43,791 bbl$1,794,499
Casinghead gasProduction21 Mcf$0
Total$1,794,499

21 Mcf of this lease's gas, across 21 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 33.4245, -98.3751. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

33.42403, -98.37533 · 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
50.0%
2 of 4 wells
With a plug date
50.0%
2 of 4 wells
Median depth
3,805 ft
3 wells filed one
Completion to plug
30.8 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
250.0%
A plug date is filed
250.0%
BothOn the schedule and plugged. Neither fact cancels the other.
250.0%
NeitherNo plug date, and not on the schedule.
250.0%

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 2,058 and 3,970 ft, median 3,805 ft, over the 3 wells that filed a depth.

Completions filed
Feb 1976 – Sep 1978
4 of 4 wells
Plug dates filed
Nov 2007
2 of 4 wells; 2 filed none

Last completion to plug: a median of 30.8 years across the 2 wells that filed both dates, with the middle half between 30.3 years and 31.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-237323541D2,058 ftSep 1978
42-237323033Sep 1978
42-2373201023,805 ftFeb 1978Nov 2007Yes
42-2373106213,970 ftFeb 1976Nov 2007Yes

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 2026166098.932.87$16,422
Mar 20260089.753.15$0
Feb 2026165063.503.75$10,478
Jan 20260059.138.00$0
Dec 2025174056.664.41$9,859
Nov 20250058.593.93$0
Oct 2025163059.383.30$9,679
Sep 20250062.743.08$0
Aug 2025169063.933.01$10,804
Jul 20250066.743.32$0
Jun 2025156066.483.13$10,371
May 20250060.553.23$0
Apr 2025168062.363.54$10,476
Mar 20250067.704.27$0
Feb 2025171070.884.34$12,120
Jan 2025170074.324.28$12,634
Dec 20240068.993.12$0
Nov 2024167069.052.20$11,531
Oct 20240071.372.28$0
Sep 2024169069.612.36$11,764
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 2024162084.451.66$13,681
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 2024169073.023.30$12,340
Dec 20230071.262.61$0
Nov 2023166077.892.81$12,930
Oct 20230085.443.09$0
Sep 2023150089.042.74$13,356
Aug 20230080.522.67$0
Jul 2023160074.852.64$11,976
Jun 20230068.962.26$0
May 2023164070.622.23$11,582
Apr 20230078.122.24$0
Mar 2023172072.852.39$12,530
Feb 20230075.112.47$0
Jan 2023168076.533.39$12,857
Dec 20220076.415.73$0
Nov 2022157085.005.65$13,345
Oct 2022170087.185.86$14,821
Sep 20220084.888.16$0
Aug 2022164094.529.13$15,501
Jul 202200101.587.54$0
Jun 20221680115.097.98$19,335
May 202200109.378.43$0
Apr 20221580104.226.84$16,467
Mar 20221650108.885.08$17,965
Feb 20220091.054.86$0
Jan 2022170081.844.54$13,913
Dec 20210071.323.90$0
Nov 2021173077.435.24$13,395
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 2021165066.024.22$10,893
Jul 20210070.783.98$0
Jun 2021167069.493.38$11,605
May 20210063.483.02$0
Apr 2021170060.362.76$10,261
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 2021170050.412.81$8,570
Dec 20200044.642.68$0
Nov 2020166038.772.71$6,436
Oct 20200036.972.48$0
Sep 2020166037.091.99$6,157
Aug 20200039.982.39$0
Jul 2020151038.371.83$5,794
Jun 2020154034.901.69$5,375
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020168030.341.86$5,097
Feb 20200049.881.98$0
Jan 2020173057.252.09$9,904
Dec 20190059.012.30$0
Nov 20190055.302.75$0
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 2019165062.632.75$10,334
Mar 20190056.803.06$0
Feb 2019168050.852.79$8,543
Jan 20190046.033.23$0
Dec 2018170046.594.19$7,920
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 2018138059.543.11$8,217
Aug 2018170059.403.07$10,098
Jul 20180065.142.93$0
Jun 2018177060.183.08$10,652
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 2018158061.222.79$9,673
Feb 20180061.782.77$0
Jan 201890062.874.01$5,658
Dec 201799057.272.92$5,670
Nov 2017105055.423.12$5,819
Oct 2017122049.292.98$6,013
Sep 20170047.523.09$0
Aug 2017140045.373.00$6,352
Jul 20170043.873.09$0
Jun 2017151042.493.09$6,416
May 20170045.373.26$0
Apr 2017163047.933.21$7,813
Mar 20170046.772.98$0
Feb 2017161050.452.95$8,122
Jan 20170049.413.42$0
Dec 2016108048.763.72$5,266
Nov 201656042.492.64$2,379
Oct 201690046.193.09$4,157
Sep 201663041.553.10$2,618
Aug 201677041.442.92$3,191
Jul 201686041.622.92$3,579
Jun 2016112045.352.69$5,079
May 20160042.521.99$0
Apr 201686036.561.99$3,144
Mar 2016168033.011.79$5,546
Feb 201691026.472.06$2,409
Jan 20160027.352.36$0
Dec 2015163032.362.00$5,275
Nov 2015154038.792.17$5,974
Oct 20150043.552.43$0
Sep 2015155042.992.76$6,663
Aug 20150040.162.87$0
Jul 2015151048.152.95$7,271
Jun 2015166056.152.88$9,321
May 20150055.212.96$0
Apr 2015158049.822.71$7,872
Mar 20150042.892.93$0
Feb 2015164044.662.98$7,324
Jan 20150043.433.10$0
Dec 2014156054.693.59$8,532
Nov 2014155070.464.25$10,921
Oct 20140078.303.90$0
Sep 2014154086.164.05$13,269
Aug 2014164089.394.04$14,660
Jul 20140096.564.18$0
Jun 2014146098.164.74$14,331
May 2014169094.734.73$16,009
Apr 20140095.944.81$0
Mar 2014155095.895.06$14,863
Feb 2014174097.406.19$16,948
Jan 20140090.404.86$0
Dec 2013170091.824.35$15,609
Nov 20130088.853.74$0
Oct 2013166097.423.78$16,172
Sep 20131670104.113.72$17,386
Aug 201300104.253.52$0
Jul 20131730102.523.72$17,736
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 2013168093.964.28$15,785
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 2013171091.603.42$15,664
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 2012152089.383.40$13,586
Sep 2012172094.672.92$16,283
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 20121540101.652.00$15,654
Mar 20121590105.052.22$16,703
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 2011164095.723.31$15,698
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 2011171094.144.52$16,098
Jun 20110092.904.64$0
May 2011172098.134.40$16,878
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 2011340085.644.18$29,118
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 2010167078.103.51$13,043
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20103070.364.91$211
May 2010170071.124.24$12,090
Apr 2010169081.694.12$13,806
Mar 2010170078.394.39$13,326
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 2009179072.544.11$12,985
Sep 20090065.543.06$0
Aug 2009166067.423.22$11,192
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 2009171054.743.93$9,361
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 2008171075.246.92$12,866
Sep 20081690101.767.88$17,197
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 20081480123.1711.57$18,229
Apr 20081690110.3110.45$18,642
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 2008163090.388.21$14,732
Dec 20070088.337.30$0
Nov 2007177091.677.29$16,226
Oct 2007163082.856.92$13,505
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007180058.747.85$10,573
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 2007170050.306.73$8,551
Dec 2006156056.656.92$8,837
Nov 20060054.207.62$0
Oct 2006152054.906.01$8,345
Sep 20060060.085.04$0
Aug 2006172068.717.34$11,818
Jul 2006179069.376.34$12,417
Jun 20060066.286.38$0
May 2006175066.016.42$11,552
Apr 20060064.397.36$0
Mar 2006182056.707.08$10,319
Feb 20060057.597.75$0
Jan 2006166060.598.93$10,058
Dec 20050054.9413.42$0
Nov 2005184054.6910.59$10,063
Oct 20050058.3413.80$0
Sep 2005180061.4512.08$11,061
Aug 2005185061.519.80$11,379
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 2005176049.207.36$8,659
Mar 20050050.377.15$0
Feb 2005183045.226.31$8,275
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 2004181045.286.33$8,196
Oct 20040049.706.52$0
Sep 2004166043.245.28$7,178
Aug 20040042.375.55$0
Jul 2004117038.286.08$4,479
Jun 200495036.106.43$3,430
May 2004157037.486.49$5,884
Apr 20040034.475.86$0
Mar 2004175034.365.53$6,013
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 200381028.804.60$2,333
Oct 20030028.174.76$0
Sep 2003136026.314.75$3,578
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 2003116028.565.98$3,313
May 20030026.595.97$0
Apr 2003143026.675.41$3,814
Mar 20030031.146.10$0
Feb 2003131033.487.93$4,386
Jan 20030030.315.58$0
Dec 2002167026.914.85$4,494
Nov 20020024.664.14$0
Oct 2002182026.464.23$4,816
Sep 20020027.443.64$0
Aug 2002103025.963.16$2,674
Jul 2002152024.583.06$3,736
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 2002183022.003.10$4,026
Feb 20020018.222.38$0
Jan 2002183017.172.38$3,142
Dec 20010016.932.36$0
Nov 2001181018.072.41$3,271
Oct 20010019.782.53$0
Sep 2001165024.262.25$4,003
Aug 20010024.873.05$0
Jul 2001304023.933.20$7,275
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 2001183024.685.34$4,516
Mar 20010024.545.38$0
Feb 2001184027.755.77$5,106
Jan 20010027.478.40$0
Dec 2000178026.889.12$4,785
Nov 20000032.215.66$0
Oct 2000135031.235.15$4,216
Sep 2000177031.875.19$5,641
Aug 20000029.644.54$0
Jul 2000180028.534.09$5,135
Jun 20000029.304.40$0
May 2000129027.263.68$3,517
Apr 2000179024.513.12$4,387
Mar 20000028.422.86$0
Feb 2000154027.622.73$4,253
Jan 2000179025.272.48$4,523
Dec 19990024.282.42$0
Nov 1999132023.192.43$3,061
Oct 1999180020.982.80$3,776
Sep 1999181021.752.62$3,937
Aug 19990019.262.88$0
Jul 1999164017.892.37$2,934
Jun 19990015.942.36$0
May 1999161015.792.32$2,542
Apr 1999171015.102.21$2,582
Mar 1999182012.471.84$2,270
Feb 199917709.981.82$1,766
Jan 1999205010.381.90$2,128
Dec 1998009.201.77$0
Nov 1998150010.892.19$1,634
Oct 1998171012.421.97$2,124
Sep 1998163012.592.08$2,052
Aug 1998166011.301.91$1,876
Jul 1998320011.742.24$3,757
Jun 19980011.242.24$0
May 1998316012.622.21$3,988
Apr 19980013.042.51$0
Mar 1998256012.802.31$3,277
Feb 1998164013.952.30$2,288
Jan 1998162014.702.15$2,381
Dec 1997271016.322.41$4,423
Nov 1997241018.193.09$4,384
Oct 1997167019.253.15$3,215
Sep 1997176017.742.95$3,122
Aug 1997313017.862.55$5,590
Jul 1997182017.582.25$3,200
Jun 1997289017.242.26$4,982
May 1997335018.972.31$6,355
Apr 1997344017.882.08$6,151
Mar 1997424018.951.94$8,035
Feb 1997365020.492.21$7,479
Jan 1997184023.483.54$4,320
Dec 1996186023.32$4,338
Nov 1996353021.97$7,755
Oct 1996183023.31$4,266
Sep 1996174022.22$3,866
Aug 1996359020.26$7,273
Jul 1996168019.55$3,284
Jun 1996161018.73$3,016
May 1996187019.43$3,633
Apr 1996336021.51$7,227
Mar 1996282019.38$5,465
Feb 1996338016.98$5,739
Jan 19960017.07$0
Dec 1995459017.19$7,890
Nov 1995300016.00$4,800
Oct 1995197015.43$3,040
Sep 1995383016.18$6,197
Aug 1995353015.92$5,620
Jul 1995191015.24$2,911
Jun 1995395016.41$6,482
May 19950017.56$0
Apr 1995398017.73$7,057
Mar 1995391016.44$6,428
Feb 1995167016.58$2,769
Jan 1995188015.92$2,993
Dec 1994380015.03$5,711
Nov 1994204015.90$3,244
Oct 1994199015.58$3,100
Sep 1994366115.29$5,596
Aug 1994387116.13$6,242
Jul 1994172117.56$3,020
Jun 1994381117.09$6,511
May 1994187115.88$2,970
Apr 1994383114.14$5,416
Mar 1994352112.46$4,386
Feb 1994172112.50$2,150
Jan 1994359112.66$4,545
Dec 1993182112.33$2,244
Nov 1993373114.49$5,405
Oct 1993176115.85$2,790
Sep 1993378115.03$5,681
Aug 1993196115.66$3,069
Jul 1993373115.46$5,767
Jun 1993381116.79$6,397
May 1993184117.68$3,253
Apr 1993501118.05$9,043
Mar 1993176118.14$3,193
Feb 1993368117.90$6,587
Jan 1993388116.93$6,569

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.

Apr 2026 — as filed, then multipliedworked
Oil                  166 bbl  × $ 98.93 =    $16,422
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $16,422

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. 09/O/17866 is the state's own key, not one this site invented.