CONTINENTAL-HALLEY

Operated by PENWELL SOUTH OPERATING LLC (P-5 102289) in the HALLEY field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 21558District 08Field 38255001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$4.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$294 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 611 wells, and the rule below applies to all of them.

Discovered
1939-12-31
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.

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.

The Commission's schedule remark for this field reads: OPTIONAL 10 ACRE TRACTS ON WATERFLOOD LEASES 8--59451

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
OilDisposition76,607 bbl$4,266,859
Casinghead gasProduction43,234 Mcf$152,467
Total$4,419,327

22 Mcf of this lease's gas, across 22 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 (9)

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 31.7445, -103.0793. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles. 1 well has no surveyed location and is left out of it.

31.74445, -103.07930 · centre of 8 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
44.4%
4 of 9 wells
With a plug date
33.3%
3 of 9 wells
Median depth
2,922 ft
7 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
444.4%
A plug date is filed
333.3%
BothOn the schedule and plugged. Neither fact cancels the other.
333.3%
NeitherNo plug date, and not on the schedule.
555.6%

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, 7 of 9 wells. Median 2,922 ft, with the middle half between 2,917 and 2,926 ft; the shallowest is 1,300 ft and the deepest 2,926 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, 3 of 9 wells, May 2018 – Oct 2018. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
May 2018 – Oct 2018
3 of 9 wells; 6 filed none
Plug dates filed
Oct 2005 – Mar 2014
3 of 9 wells; 6 filed none

9 wells

42-495020363W2,920 ftMar 2014Yes
42-495059952W2,926 ftOct 2005Yes
42-4950599661,300 ftFeb 2014Yes
42-495817977WYes
42-495008191
42-4950203952,922 ft
42-4950599772,914 ftOct 2018
42-4950203842,925 ftJul 2018
42-4950204082,926 ftMay 2018

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 2026677098.932.87$66,976
Mar 2026544089.753.15$48,824
Feb 2026229063.503.75$14,542
Jan 2026304059.138.00$17,976
Dec 2025511056.664.41$28,953
Nov 2025341058.593.93$19,979
Oct 2025451059.383.30$26,780
Sep 2025312062.743.08$19,575
Aug 2025115363.933.01$7,361
Jul 20253251766.743.32$21,747
Jun 20253225466.483.13$21,576
May 202525721360.553.23$16,250
Apr 202517223862.363.54$11,569
Mar 202525329367.704.27$18,379
Feb 202532514270.884.34$23,652
Jan 20252495974.324.28$18,758
Dec 202433416568.993.12$23,558
Nov 2024338969.052.20$23,359
Oct 2024236071.372.28$16,843
Sep 2024346069.612.36$24,085
Aug 2024253875.632.06$19,151
Jul 20242502979.932.15$20,045
Jun 2024259078.082.63$20,223
May 2024250078.812.20$19,703
Apr 2024406084.451.66$34,287
Mar 20244067580.301.55$32,718
Feb 20242507576.091.78$19,156
Jan 20244079073.023.30$30,016
Dec 202342311271.262.61$30,435
Nov 20233406877.892.81$26,674
Oct 20234721785.443.09$40,380
Sep 20233025789.042.74$27,046
Aug 20233969780.522.67$32,145
Jul 202323110974.852.64$17,578
Jun 20233159268.962.26$21,930
May 20232332670.622.23$16,512
Apr 20233097078.122.24$24,296
Mar 20233949372.852.39$28,925
Feb 20233055675.112.47$23,047
Jan 20233769276.533.39$29,087
Dec 20223948276.415.73$30,575
Nov 202230417385.005.65$26,817
Oct 202237444787.185.86$35,226
Sep 202237039684.888.16$34,638
Aug 202229440194.529.13$31,449
Jul 2022298148101.587.54$31,387
Jun 202236052115.097.98$41,847
May 2022378320109.378.43$44,040
Apr 2022375347104.226.84$41,455
Mar 2022306370108.885.08$35,196
Feb 202259142491.054.86$55,871
Jan 202223149381.844.54$21,142
Dec 202159866371.323.90$45,234
Nov 202136849377.435.24$31,076
Oct 202137432079.795.71$31,670
Sep 202152244269.865.35$38,832
Aug 202151191066.024.22$37,577
Jul 202137381270.783.98$29,634
Jun 202166980469.493.38$49,207
May 2021303063.483.02$19,234
Apr 2021456060.362.76$27,524
Mar 2021557061.302.72$34,144
Feb 2021232057.805.55$13,410
Jan 2021388050.412.81$19,559
Dec 2020702044.642.68$31,337
Nov 2020384038.772.71$14,888
Oct 2020542036.972.48$20,038
Sep 2020398037.091.99$14,762
Aug 2020556039.982.39$22,229
Jul 2020473038.371.83$18,149
Jun 2020472034.901.69$16,473
May 2020311016.921.81$5,262
Apr 2020317014.751.80$4,676
Mar 2020698030.341.86$21,177
Feb 2020551049.881.98$27,484
Jan 2020559057.252.09$32,003
Dec 2019691059.012.30$40,776
Nov 2019788055.302.75$43,576
Oct 2019705053.472.42$37,696
Sep 20196261,00655.052.66$37,135
Aug 20194651,30353.112.30$27,699
Jul 20196281,61756.272.46$39,315
Jun 20191,4542,92952.782.49$84,039
May 20198143,26458.482.74$56,547
Apr 20191,0683,33962.632.75$76,073
Mar 20191,2223,90456.803.06$81,364
Feb 20191,3013,75050.852.79$76,627
Jan 20191,3494,24546.033.23$75,798
Dec 20182,1404,04546.594.19$116,633
Nov 20181,4193,17252.934.24$88,548
Oct 20181,16818261.443.40$72,380
Sep 20181,518059.543.11$90,382
Aug 2018553059.403.07$32,848
Jul 2018409065.142.93$26,642
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 20170055.423.12$0
Oct 201785049.292.98$4,190
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 2016181048.763.72$8,826
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 2016185045.352.69$8,390
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 2016184033.011.79$6,074
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 2015171032.362.00$5,534
Nov 20150038.792.17$0
Oct 2015174043.552.43$7,578
Sep 20150042.992.76$0
Aug 2015174040.162.87$6,988
Jul 2015180048.152.95$8,667
Jun 20150056.152.88$0
May 2015168055.212.96$9,275
Apr 2015168049.822.71$8,370
Mar 20150042.892.93$0
Feb 2015167044.662.98$7,458
Jan 20150043.433.10$0
Dec 2014173054.693.59$9,461
Nov 20140070.464.25$0
Oct 2014178078.303.90$13,937
Sep 2014167086.164.05$14,389
Aug 2014157089.394.04$14,034
Jul 2014330096.564.18$31,865
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 2014167095.944.81$16,022
Mar 2014168095.895.06$16,110
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 2013336088.853.74$29,854
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 20134780104.253.52$49,832
Jul 201300102.523.72$0
Jun 2013172094.403.93$16,237
May 20130094.834.15$0
Apr 2013336093.964.28$31,571
Mar 2013169093.623.91$15,822
Feb 20130091.233.42$0
Jan 2013371091.603.42$33,984
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 2012264089.383.40$23,596
Sep 2012371094.672.92$35,123
Aug 20120092.662.91$0
Jul 2012190085.133.02$16,175
Jun 20120079.822.52$0
May 2012382091.612.49$34,995
Apr 201200101.652.00$0
Mar 20123700105.052.22$38,869
Feb 201200101.102.57$0
Jan 2012375098.092.73$36,784
Dec 2011376096.873.24$36,423
Nov 2011373095.723.31$35,704
Oct 2011168084.983.65$14,277
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 2011173092.904.64$16,072
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 2010173080.843.80$13,985
Oct 2010170078.103.51$13,277
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20106070.364.91$422
May 20106071.124.24$427
Apr 2010189081.694.12$15,439
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20092071.445.48$143
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20095067.423.22$337
Jul 20091061.133.46$61
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20093032.814.63$98
Jan 200959035.865.37$2,116
Dec 2008156037.105.98$5,788
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200820101.767.88$204
Aug 20081950114.228.48$22,273
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 20081980123.1711.57$24,388
Apr 200800110.3110.45$0
Mar 20081990101.909.66$20,278
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 2007195091.677.29$17,876
Oct 20074082.856.92$331
Sep 200711075.846.24$834
Aug 20070069.066.39$0
Jul 2007202070.906.39$14,322
Jun 20073062.007.55$186
May 2007189058.747.85$11,102
Apr 20072059.617.81$119
Mar 20070056.927.30$0
Feb 2007177055.108.22$9,753
Jan 20070050.306.73$0
Dec 2006198056.656.92$11,217
Nov 20061054.207.62$54
Oct 2006178054.906.01$9,772
Sep 20069060.085.04$541
Aug 20064068.717.34$275
Jul 2006175069.376.34$12,140
Jun 20069066.286.38$597
May 2006174066.016.42$11,486
Apr 20060064.397.36$0
Mar 2006184056.707.08$10,433
Feb 20060057.597.75$0
Jan 2006181060.598.93$10,967
Dec 20050054.9413.42$0
Nov 2005189054.6910.59$10,336
Oct 20055058.3413.80$292
Sep 2005180061.4512.08$11,061
Aug 2005183061.519.80$11,256
Jul 20050055.697.84$0
Jun 2005186052.337.38$9,733
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 2005188050.377.15$9,470
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 2004174038.286.08$6,661
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 2004163034.365.53$5,601
Feb 200416032.455.51$519
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 2003117028.804.60$3,370
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 2003194029.765.13$5,773
Jul 2003160029.415.17$4,706
Jun 20030028.565.98$0
May 2003475026.595.97$12,630
Apr 2003166026.675.41$4,427
Mar 20030031.146.10$0
Feb 2003168033.487.93$5,625
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 2002160024.663.58$3,946
Apr 20020023.653.51$0
Mar 2002183022.003.10$4,026
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 2001176018.072.41$3,180
Oct 2001175019.782.53$3,462
Sep 2001156024.262.25$3,785
Aug 2001171024.873.05$4,253
Jul 20010023.933.20$0
Jun 2001168024.563.82$4,126
May 2001167025.524.31$4,262
Apr 2001160024.685.34$3,949
Mar 2001169024.545.38$4,147
Feb 2001156027.755.77$4,329
Jan 20010027.478.40$0
Dec 2000183026.889.12$4,919
Nov 2000175032.215.66$5,637
Oct 2000169031.235.15$5,278
Sep 20000031.875.19$0
Aug 2000138029.644.54$4,090
Jul 2000127028.534.09$3,623
Jun 2000106029.304.40$3,106
May 200093027.263.68$2,535
Apr 200088024.513.12$2,157
Mar 2000110028.422.86$3,126
Feb 2000129027.622.73$3,563
Jan 2000181025.272.48$4,574
Dec 19990024.282.42$0
Nov 1999172023.192.43$3,989
Oct 1999147020.982.80$3,084
Sep 1999123021.752.62$2,675
Aug 1999178019.262.88$3,428
Jul 1999182017.892.37$3,256
Jun 1999260015.942.36$4,144
May 1999141015.792.32$2,226
Apr 19990015.102.21$0
Mar 1999191012.471.84$2,382
Feb 1999009.981.82$0
Jan 1999153010.381.90$1,588
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 1998137012.421.97$1,702
Sep 1998192012.592.08$2,417
Aug 19980011.301.91$0
Jul 1998128011.742.24$1,503
Jun 1998163011.242.24$1,832
May 1998358012.622.21$4,518
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 1998184013.952.30$2,567
Jan 1998178014.702.15$2,617
Dec 19970016.322.41$0
Nov 1997160018.193.09$2,910
Oct 1997121019.253.15$2,329
Sep 1997171017.742.95$3,034
Aug 1997116017.862.55$2,072
Jul 1997152017.582.25$2,672
Jun 1997119017.242.26$2,052
May 1997136018.972.31$2,580
Apr 1997133017.882.08$2,378
Mar 1997161018.951.94$3,051
Feb 1997136020.492.21$2,787
Jan 1997147023.483.54$3,452
Dec 1996152023.32$3,545
Nov 1996158021.97$3,471
Oct 1996175023.31$4,079
Sep 199666022.22$1,467
Aug 1996136020.26$2,755
Jul 1996129019.55$2,522
Jun 1996149018.73$2,791
May 1996126019.43$2,448
Apr 1996166021.51$3,571
Mar 1996152019.38$2,946
Feb 1996140016.98$2,377
Jan 1996165017.07$2,817
Dec 19950017.19$0
Nov 1995151016.00$2,416
Oct 1995133015.43$2,052
Sep 1995154016.18$2,492
Aug 1995150015.92$2,388
Jul 1995144015.24$2,195
Jun 1995144016.41$2,363
May 1995139017.56$2,441
Apr 1995165017.73$2,925
Mar 1995158016.44$2,598
Feb 1995151016.58$2,504
Jan 1995166015.92$2,643
Dec 1994156015.03$2,345
Nov 1994156015.90$2,480
Oct 1994154115.58$2,399
Sep 1994140115.29$2,141
Aug 1994162116.13$2,613
Jul 1994154117.56$2,704
Jun 1994150117.09$2,564
May 1994207115.88$3,287
Apr 1994169114.14$2,390
Mar 1994148112.46$1,844
Feb 1994220112.50$2,750
Jan 1994165112.66$2,089
Dec 1993167112.33$2,059
Nov 1993158114.49$2,289
Oct 1993275115.85$4,359
Sep 1993171115.03$2,570
Aug 1993162115.66$2,537
Jul 1993193115.46$2,984
Jun 1993209116.79$3,509
May 1993226117.68$3,996
Apr 1993182118.05$3,285
Mar 1993234118.14$4,245
Feb 1993227117.90$4,063
Jan 1993244116.93$4,131

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                  677 bbl  × $ 98.93 =    $66,976
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $66,976

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/21558 is the state's own key, not one this site invented.