HALLEY, S. M.

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 21563District 08Field 38255001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$8.1 M
Jan 1993 – May 2026
Value, last 12 filed months
$354 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
OilDisposition147,037 bbl$7,967,075
Casinghead gasProduction49,701 Mcf$173,338
Total$8,140,414

1,156 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 (16)

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 31.7491, -103.0765. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

31.74907, -103.07655 · 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%
4 of 16 wells
With a plug date
18.8%
3 of 16 wells
Median depth
2,905 ft
10 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
425.0%
A plug date is filed
318.8%
BothOn the schedule and plugged. Neither fact cancels the other.
318.8%
NeitherNo plug date, and not on the schedule.
1275.0%

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

Total depth in feet, 10 of 16 wells. Median 2,905 ft, with the middle half between 2,897 and 2,915 ft; the shallowest is 2,882 ft and the deepest 2,920 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, 7 of 16 wells, Nov 1948 – Jun 2021. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Nov 1948 – Jun 2021
7 of 16 wells; 9 filed none
Plug dates filed
Oct 2005 – Jan 2011
3 of 16 wells; 13 filed none

16 wells

42-49502046122,918 ftNov 2005Yes
42-49502048162,908 ftJan 2011Yes
42-4950599915W2,917 ftOct 2005Yes
42-495008181
42-495008202W
42-495008244
42-495008266W
42-495020428W
42-4950204410W
42-4950599814W2,904 ftJun 2021
42-4950082332,905 ftJun 2021Yes
42-4950204172,905 ftJul 2018
42-49502047132,882 ftMay 2018
42-49502045112,890 ftFeb 2018
42-4950204392,920 ftFeb 2018
42-495008255W2,894 ftNov 1948

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 2026813098.932.87$80,430
Mar 2026653089.753.15$58,607
Feb 2026275063.503.75$17,463
Jan 2026366059.138.00$21,642
Dec 2025614056.664.41$34,789
Nov 2025410058.593.93$24,022
Oct 2025542059.383.30$32,184
Sep 2025374062.743.08$23,465
Aug 2025139363.933.01$8,895
Jul 20253902066.743.32$26,095
Jun 20253876466.483.13$25,928
May 202530925560.553.23$19,534
Apr 202520628562.363.54$13,856
Mar 202530335367.704.27$22,020
Feb 202539017070.884.34$28,381
Jan 20252987074.324.28$22,447
Dec 202440019868.993.12$28,214
Nov 20244051169.052.20$27,989
Oct 2024283071.372.28$20,198
Sep 2024416069.612.36$28,958
Aug 2024303975.632.06$22,934
Jul 20243003479.932.15$24,052
Jun 2024310078.082.63$24,205
May 2024301078.812.20$23,722
Apr 2024487084.451.66$41,127
Mar 20244879080.301.55$39,245
Feb 20243019176.091.78$23,065
Jan 202448810773.023.30$35,987
Dec 202350813571.262.61$36,553
Nov 20234088277.892.81$32,009
Oct 20235662085.443.09$48,421
Sep 20233626889.042.74$32,418
Aug 202347411780.522.67$38,479
Jul 202327713174.852.64$21,080
Jun 202337810968.962.26$26,313
May 20232803170.622.23$19,843
Apr 20233718578.122.24$29,173
Mar 202347311172.852.39$34,724
Feb 20233666875.112.47$27,658
Jan 202345211076.533.39$34,964
Dec 20224739876.415.73$36,703
Nov 202236520785.005.65$32,194
Oct 202244953687.185.86$42,287
Sep 202244447684.888.16$41,573
Aug 202235344694.529.13$37,436
Jul 2022358178101.587.54$37,708
Jun 202243263115.097.98$50,221
May 2022454385109.378.43$52,901
Apr 2022450416104.226.84$49,743
Mar 2022368445108.885.08$42,327
Feb 202270850891.054.86$66,932
Jan 202227859281.844.54$25,438
Dec 202171879571.323.90$54,308
Nov 202144259177.435.24$37,319
Oct 202161638379.795.71$51,339
Sep 202162653069.865.35$46,568
Aug 20216141,09266.024.22$45,145
Jul 202144897470.783.98$35,588
Jun 202180296469.493.38$58,990
May 2021356063.483.02$22,599
Apr 2021548060.362.76$33,077
Mar 2021669061.302.72$41,010
Feb 2021278057.805.55$16,068
Jan 2021466050.412.81$23,491
Dec 2020843044.642.68$37,632
Nov 2020460038.772.71$17,834
Oct 2020651036.972.48$24,067
Sep 2020478037.091.99$17,729
Aug 2020668039.982.39$26,707
Jul 2020568038.371.83$21,794
Jun 2020567034.901.69$19,788
May 2020373016.921.81$6,311
Apr 2020381014.751.80$5,620
Mar 2020837030.341.86$25,395
Feb 2020662049.881.98$33,021
Jan 2020671057.252.09$38,415
Dec 2019830059.012.30$48,978
Nov 2019946055.302.75$52,314
Oct 2019846053.472.42$45,236
Sep 20197511,20755.052.66$44,550
Aug 20195571,56253.112.30$33,182
Jul 20197531,94056.272.46$47,144
Jun 20191,5793,18152.782.49$91,264
May 20198843,54458.482.74$61,408
Apr 20191,1603,62662.632.75$82,625
Mar 20191,2223,90556.803.06$81,367
Feb 20191,3013,75050.852.79$76,627
Jan 20191,3494,24646.033.23$75,801
Dec 20182,1404,04646.594.19$116,637
Nov 20182,1284,75852.934.24$132,796
Oct 20181,75327461.443.40$108,635
Sep 20182,276059.543.11$135,513
Aug 20182,210059.403.07$131,274
Jul 20181,638065.142.93$106,699
Jun 20182,074060.183.08$124,813
May 20181,270065.382.90$83,033
Apr 20181,569063.842.90$100,165
Mar 2018354061.222.79$21,672
Feb 2018171061.782.77$10,564
Jan 2018187062.874.01$11,757
Dec 2017359057.272.92$20,560
Nov 2017176055.423.12$9,754
Oct 20170049.292.98$0
Sep 2017148047.523.09$7,033
Aug 2017171045.373.00$7,758
Jul 2017328043.873.09$14,389
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 2017175047.933.21$8,388
Mar 2017172046.772.98$8,044
Feb 2017189050.452.95$9,535
Jan 20170049.413.42$0
Dec 2016177048.763.72$8,631
Nov 2016180042.492.64$7,648
Oct 20160046.193.09$0
Sep 2016184041.553.10$7,645
Aug 2016175041.442.92$7,252
Jul 20160041.622.92$0
Jun 2016165045.352.69$7,483
May 2016184042.521.99$7,824
Apr 20160036.561.99$0
Mar 2016174033.011.79$5,744
Feb 2016173026.472.06$4,579
Jan 20160027.352.36$0
Dec 2015180032.362.00$5,825
Nov 20150038.792.17$0
Oct 2015185043.552.43$8,057
Sep 2015180042.992.76$7,738
Aug 2015180040.162.87$7,229
Jul 2015176048.152.95$8,474
Jun 2015178056.152.88$9,995
May 2015343055.212.96$18,937
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 2015347044.662.98$15,497
Jan 2015339043.433.10$14,723
Dec 2014175054.693.59$9,571
Nov 2014341070.464.25$24,027
Oct 2014345078.303.90$27,014
Sep 2014335086.164.05$28,864
Aug 2014333089.394.04$29,767
Jul 2014341096.564.18$32,927
Jun 2014163098.164.74$16,000
May 2014335094.734.73$31,735
Apr 2014504095.944.81$48,354
Mar 2014329095.895.06$31,548
Feb 2014340097.406.19$33,116
Jan 2014343090.404.86$31,007
Dec 2013503091.824.35$46,185
Nov 2013170088.853.74$15,105
Oct 2013178097.423.78$17,341
Sep 20133380104.113.72$35,189
Aug 20131670104.253.52$17,410
Jul 20131710102.523.72$17,531
Jun 2013173094.403.93$16,331
May 2013325094.834.15$30,820
Apr 2013339093.964.28$31,852
Mar 2013169093.623.91$15,822
Feb 2013173091.233.42$15,783
Jan 2013353091.603.42$32,335
Dec 2012143086.773.42$12,408
Nov 2012193086.953.62$16,781
Oct 2012370089.383.40$33,071
Sep 2012185094.672.92$17,514
Aug 2012193092.662.91$17,883
Jul 2012192085.133.02$16,345
Jun 2012184079.822.52$14,687
May 2012189091.612.49$17,314
Apr 20123780101.652.00$38,424
Mar 20121870105.052.22$19,644
Feb 20121920101.102.57$19,411
Jan 2012187098.092.73$18,343
Dec 2011389096.873.24$37,682
Nov 2011189095.723.31$18,091
Oct 2011192084.983.65$16,316
Sep 2011362083.623.99$30,270
Aug 2011166083.404.15$13,844
Jul 2011366094.144.52$34,455
Jun 2011355092.904.64$32,980
May 2011356098.134.40$34,934
Apr 20113620105.964.33$38,358
Mar 2011359096.364.06$34,593
Feb 2011182085.644.18$15,586
Jan 2011347086.504.59$30,016
Dec 2010193085.734.35$16,546
Nov 2010531080.843.80$42,926
Oct 2010341078.103.51$26,632
Sep 2010172072.633.98$12,492
Aug 2010187073.684.42$13,778
Jul 2010357072.554.74$25,900
Jun 2010348070.364.91$24,485
May 2010357071.124.24$25,390
Apr 2010187081.694.12$15,276
Mar 2010365078.394.39$28,612
Feb 2010189073.585.44$13,907
Jan 2010372074.365.96$27,662
Dec 2009366071.445.48$26,147
Nov 2009180074.593.75$13,426
Oct 2009186072.544.11$13,492
Sep 2009366065.543.06$23,988
Aug 2009338067.423.22$22,788
Jul 2009169061.133.46$10,331
Jun 2009180066.163.90$11,909
May 2009354054.743.93$19,378
Apr 2009180046.773.59$8,419
Mar 2009186042.144.06$7,838
Feb 2009387032.814.63$12,697
Jan 2009196035.865.37$7,029
Dec 2008380037.105.98$14,098
Nov 2008379055.496.86$21,031
Oct 2008383075.246.92$28,817
Sep 20081950101.767.88$19,843
Aug 20083700114.228.48$42,261
Jul 20083830131.0811.39$50,204
Jun 20081940131.3313.03$25,478
May 20083890123.1711.57$47,913
Apr 20083850110.3110.45$42,469
Mar 20083920101.909.66$39,945
Feb 2008395092.538.77$36,549
Jan 2008384090.388.21$34,706
Dec 2007387088.337.30$34,184
Nov 2007205091.677.29$18,792
Oct 2007357082.856.92$29,577
Sep 2007388075.846.24$29,426
Aug 2007361069.066.39$24,931
Jul 2007180070.906.39$12,762
Jun 2007389062.007.55$24,118
May 2007578058.747.85$33,952
Apr 2007183059.617.81$10,909
Mar 2007171056.927.30$9,733
Feb 2007178055.108.22$9,808
Jan 2007366050.306.73$18,410
Dec 2006169056.656.92$9,574
Nov 2006556054.207.62$30,135
Oct 2006176054.906.01$9,662
Sep 2006354060.085.04$21,268
Aug 2006198068.717.34$13,605
Jul 2006533069.376.34$36,974
Jun 2006179066.286.38$11,864
May 2006374066.016.42$24,688
Apr 2006341064.397.36$21,957
Mar 2006332056.707.08$18,824
Feb 2006364057.597.75$20,963
Jan 2006379060.598.93$22,964
Dec 2005373054.9413.42$20,493
Nov 2005193054.6910.59$10,555
Oct 2005172058.3413.80$10,034
Sep 2005372061.4512.08$22,859
Aug 2005187061.519.80$11,502
Jul 2005348055.697.84$19,380
Jun 2005421052.337.38$22,031
May 2005188045.226.65$8,501
Apr 2005189049.207.36$9,299
Mar 2005373050.377.15$18,788
Feb 2005366045.226.31$16,551
Jan 2005182043.166.32$7,855
Dec 2004174039.866.75$6,936
Nov 2004180045.286.33$8,150
Oct 2004373049.706.52$18,538
Sep 2004187043.245.28$8,086
Aug 2004377042.375.55$15,973
Jul 2004183038.286.08$7,005
Jun 2004378036.106.43$13,646
May 2004186037.486.49$6,971
Apr 2004374034.475.86$12,892
Mar 2004378034.365.53$12,988
Feb 2004183032.455.51$5,938
Jan 2004364032.036.30$11,659
Dec 2003313030.266.30$9,471
Nov 2003345028.804.60$9,936
Oct 2003346028.174.76$9,747
Sep 2003349026.314.75$9,182
Aug 2003170029.765.13$5,059
Jul 2003319029.415.17$9,382
Jun 2003297028.565.98$8,482
May 2003497026.595.97$13,215
Apr 2003150026.675.41$4,001
Mar 2003161031.146.10$5,014
Feb 2003171033.487.93$5,725
Jan 2003171030.315.58$5,183
Dec 2002182026.914.85$4,898
Nov 2002183024.664.14$4,513
Oct 2002182026.464.23$4,816
Sep 2002102027.443.64$2,799
Aug 2002143025.963.16$3,712
Jul 2002153024.583.06$3,761
Jun 2002176023.733.34$4,176
May 2002180024.663.58$4,439
Apr 2002349023.653.51$8,254
Mar 2002182022.003.10$4,004
Feb 2002186018.222.38$3,389
Jan 2002156017.172.38$2,679
Dec 2001351016.932.36$5,942
Nov 2001176018.072.41$3,180
Oct 2001301019.782.53$5,954
Sep 2001351024.262.25$8,515
Aug 2001330024.873.05$8,207
Jul 2001335023.933.20$8,017
Jun 2001335024.563.82$8,228
May 2001450025.524.31$11,484
Apr 2001172024.685.34$4,245
Mar 2001499024.545.38$12,245
Feb 2001176027.755.77$4,884
Jan 2001173027.478.40$4,752
Dec 2000350026.889.12$9,408
Nov 2000346032.215.66$11,145
Oct 2000140031.235.15$4,372
Sep 2000339031.875.19$10,804
Aug 2000167029.644.54$4,950
Jul 2000315028.534.09$8,987
Jun 2000335029.304.40$9,816
May 2000282027.263.68$7,687
Apr 2000339024.513.12$8,309
Mar 2000402028.422.86$11,425
Feb 2000169027.622.73$4,668
Jan 2000174025.272.48$4,397
Dec 1999157024.282.42$3,812
Nov 1999381023.192.43$8,835
Oct 1999508020.982.80$10,658
Sep 1999166021.752.62$3,611
Aug 1999328019.262.88$6,317
Jul 1999352017.892.37$6,297
Jun 1999352015.942.36$5,611
May 1999177015.792.32$2,795
Apr 1999347015.102.21$5,240
Mar 1999165012.471.84$2,058
Feb 199916609.981.82$1,657
Jan 1999178010.381.90$1,848
Dec 199816309.201.77$1,500
Nov 1998176010.892.19$1,917
Oct 1998300012.421.97$3,726
Sep 1998317012.592.08$3,991
Aug 1998161011.301.91$1,819
Jul 1998322011.742.24$3,780
Jun 1998167011.242.24$1,877
May 1998170012.622.21$2,145
Apr 1998350013.042.51$4,564
Mar 1998174012.802.31$2,227
Feb 1998180013.952.30$2,511
Jan 1998342014.702.15$5,027
Dec 1997176016.322.41$2,872
Nov 1997320018.193.09$5,821
Oct 1997327019.253.15$6,295
Sep 1997319017.742.95$5,659
Aug 1997323017.862.55$5,769
Jul 1997332017.582.25$5,837
Jun 1997330017.242.26$5,689
May 1997333018.972.31$6,317
Apr 1997489017.882.08$8,743
Mar 1997162018.951.94$3,070
Feb 1997323020.492.21$6,618
Jan 1997327023.483.54$7,678
Dec 1996164023.32$3,824
Nov 1996316021.97$6,943
Oct 1996325023.31$7,576
Sep 1996315022.22$6,999
Aug 1996164020.26$3,323
Jul 1996319019.55$6,236
Jun 1996485018.73$9,084
May 1996166019.43$3,225
Apr 1996332021.51$7,141
Mar 1996312019.38$6,047
Feb 1996339016.98$5,756
Jan 1996327017.07$5,582
Dec 1995175017.19$3,008
Nov 1995327016.00$5,232
Oct 1995321015.43$4,953
Sep 1995468016.18$7,572
Aug 1995327015.92$5,206
Jul 1995325015.24$4,953
Jun 1995328016.41$5,382
May 1995334017.56$5,865
Apr 1995492017.73$8,723
Mar 1995163016.44$2,680
Feb 1995481016.58$7,975
Jan 1995332015.92$5,285
Dec 1994336015.03$5,050
Nov 1994344015.90$5,470
Oct 1994335115.58$5,219
Sep 1994338115.29$5,168
Aug 1994334116.13$5,387
Jul 1994340217.56$5,970
Jun 19944166417.09$7,109
May 19942865915.88$4,542
Apr 19942205914.14$3,111
Mar 19943255912.46$4,050
Feb 19943454612.50$4,313
Jan 19943455012.66$4,368
Dec 19933445912.33$4,242
Nov 19933396314.49$4,912
Oct 19933376815.85$5,341
Sep 19935017115.03$7,530
Aug 19933357515.66$5,246
Jul 19933226715.46$4,978
Jun 19935007216.79$8,395
May 19933776117.68$6,665
Apr 19933766918.05$6,787
Mar 19933877218.14$7,020
Feb 19935036117.90$9,004
Jan 19933847616.93$6,501

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                  813 bbl  × $ 98.93 =    $80,430
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $80,430

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/21563 is the state's own key, not one this site invented.