NAIL 40

Operated by DAYLIGHT PETROLEUM LLC (P-5 208171) in the K W (TANNEHILL) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 23159District 7BField 47964600OilCasinghead gasSaveExport
Value, all time
$4.6 M
Jan 1993 – May 2026
Value, last 12 filed months
$108 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 1 leases and 23 wells, and the rule below applies to all of them.

Discovered
1985-10-14
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
OilDisposition121,496 bbl$4,633,491
Casinghead gasProduction3,114 Mcf$9,065
Total$4,642,556

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 (23)

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 32.8912, -99.3222. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

32.89183, -99.32244 · 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
43.5%
10 of 23 wells
With a plug date
43.5%
10 of 23 wells
Median depth
978 ft
23 wells filed one
Completion to plug
29.8 years
median over 10 wells

What the state filed about each well

On the RRC proration schedule
1043.5%
A plug date is filed
1043.5%
BothOn the schedule and plugged. Neither fact cancels the other.
1043.5%
NeitherNo plug date, and not on the schedule.
1356.5%

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, 23 of 23 wells. Median 978 ft, with the middle half between 951 and 994 ft; the shallowest is 926 ft and the deepest 1,152 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, 23 of 23 wells, Aug 1985 – Sep 1995. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Aug 1985 – Sep 1995
23 of 23 wells
Plug dates filed
Apr 2014 – Feb 2025
10 of 23 wells; 13 filed none

Last completion to plug: a median of 29.8 years across the 10 wells that filed both dates, with the middle half between 26.5 years and 30.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

23 wells

42-4170129914985 ftSep 1995Apr 2014Yes
42-41736568101,008 ftSep 1994Jul 2015Yes
42-4173765525980 ftMar 1993
42-4173735017926 ftFeb 1991
42-4173743422968 ftOct 1990
42-4173744221978 ftOct 1990
42-4173743319934 ftOct 1990Jun 2016Yes
42-4173742818930 ftOct 1990
42-4173734916988 ftJan 1990
42-417371714902983 ftSep 1989Jul 2018Yes
42-4173717212972 ftJun 1989Jul 2018Yes
42-4173726513950 ftMay 1989
42-417369416970 ftJun 1988Feb 2025Yes
42-4173711349011,003 ftNov 1987Jul 2018Yes
42-4173711111969 ftNov 1987Jul 2018Yes
42-417370048951 ftFeb 1987
42-4173644131,152 ftFeb 1987
42-4173696471,000 ftFeb 1987
42-4173644041,004 ftMar 1986
42-4173656791,018 ftNov 1985Jun 2016Yes
42-417365781950 ftOct 1985
42-417366122950 ftOct 1985
42-417364395987 ftAug 1985Jun 2016Yes

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 2026168098.932.87$16,620
Mar 20260089.753.15$0
Feb 2026319063.503.75$20,257
Jan 20260059.138.00$0
Dec 2025159056.664.41$9,009
Nov 2025171058.593.93$10,019
Oct 2025166059.383.30$9,857
Sep 2025165062.743.08$10,352
Aug 2025163063.933.01$10,421
Jul 2025163066.743.32$10,879
Jun 2025163066.483.13$10,836
May 2025168060.553.23$10,172
Apr 2025164062.363.54$10,227
Mar 2025165067.704.27$11,171
Feb 2025161070.884.34$11,412
Jan 2025164074.324.28$12,188
Dec 2024160068.993.12$11,038
Nov 2024167069.052.20$11,531
Oct 2024330071.372.28$23,552
Sep 20240069.612.36$0
Aug 2024163075.632.06$12,328
Jul 2024167079.932.15$13,348
Jun 2024330078.082.63$25,766
May 2024168078.812.20$13,240
Apr 2024168084.451.66$14,188
Mar 2024169080.301.55$13,571
Feb 2024161076.091.78$12,250
Jan 2024324073.023.30$23,658
Dec 2023159071.262.61$11,330
Nov 2023165077.892.81$12,852
Oct 2023167085.443.09$14,268
Sep 2023168089.042.74$14,959
Aug 2023327080.522.67$26,330
Jul 20230074.852.64$0
Jun 2023351068.962.26$24,205
May 20230070.622.23$0
Apr 2023164078.122.24$12,812
Mar 20230072.852.39$0
Feb 2023332075.112.47$24,937
Jan 20230076.533.39$0
Dec 2022318076.415.73$24,298
Nov 2022157085.005.65$13,345
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 2022169094.529.13$15,974
Jul 20223360101.587.54$34,131
Jun 20221650115.097.98$18,990
May 20221640109.378.43$17,937
Apr 20221660104.226.84$17,301
Mar 202200108.885.08$0
Feb 2022166091.054.86$15,114
Jan 2022167081.844.54$13,667
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 2021162079.795.71$12,926
Sep 2021166069.865.35$11,597
Aug 20210066.024.22$0
Jul 2021175070.783.98$12,387
Jun 2021181069.493.38$12,578
May 20210063.483.02$0
Apr 2021176060.362.76$10,623
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 2021183050.412.81$9,225
Dec 2020179044.642.68$7,991
Nov 20200038.772.71$0
Oct 2020174036.972.48$6,433
Sep 2020170037.091.99$6,305
Aug 2020183039.982.39$7,316
Jul 2020179038.371.83$6,868
Jun 2020179034.901.69$6,247
May 2020177016.921.81$2,995
Apr 20200014.751.80$0
Mar 2020177030.341.86$5,370
Feb 2020172049.881.98$8,579
Jan 2020340057.252.09$19,465
Dec 2019180059.012.30$10,622
Nov 2019181055.302.75$10,009
Oct 2019376053.472.42$20,105
Sep 20190055.052.66$0
Aug 2019180053.112.30$9,560
Jul 2019178056.272.46$10,016
Jun 2019179052.782.49$9,448
May 2019181058.482.74$10,585
Apr 2019160062.632.75$10,021
Mar 2019170056.803.06$9,656
Feb 2019167050.852.79$8,492
Jan 2019180046.033.23$8,285
Dec 2018336046.594.19$15,654
Nov 2018178052.934.24$9,422
Oct 2018176061.443.40$10,813
Sep 2018180059.543.11$10,717
Aug 2018176059.403.07$10,454
Jul 2018340065.142.93$22,148
Jun 2018178060.183.08$10,712
May 2018181065.382.90$11,834
Apr 2018169063.842.90$10,789
Mar 2018159061.222.79$9,734
Feb 2018173061.782.77$10,688
Jan 2018175062.874.01$11,002
Dec 2017341057.272.92$19,529
Nov 2017165055.423.12$9,144
Oct 2017342049.292.98$16,857
Sep 2017161047.523.09$7,651
Aug 2017360045.373.00$16,333
Jul 2017170043.873.09$7,458
Jun 2017165042.493.09$7,011
May 2017157045.373.26$7,123
Apr 2017168047.933.21$8,052
Mar 2017165046.772.98$7,717
Feb 2017166050.452.95$8,375
Jan 20170049.413.42$0
Dec 2016166048.763.72$8,094
Nov 2016165042.492.64$7,011
Oct 20160046.193.09$0
Sep 2016166041.553.10$6,897
Aug 2016163041.442.92$6,755
Jul 2016169041.622.92$7,034
Jun 2016329045.352.69$14,920
May 2016164042.521.99$6,973
Apr 2016160036.561.99$5,850
Mar 2016341033.011.79$11,256
Feb 2016323026.472.06$8,550
Jan 2016167027.352.36$4,567
Dec 2015161032.362.00$5,210
Nov 2015162038.792.17$6,284
Oct 2015326043.552.43$14,197
Sep 2015162042.992.76$6,964
Aug 2015160040.162.87$6,426
Jul 2015162048.152.95$7,800
Jun 2015333056.152.88$18,698
May 2015165055.212.96$9,110
Apr 2015326049.822.71$16,241
Mar 2015484042.892.93$20,759
Feb 2015160044.662.98$7,146
Jan 2015486043.433.10$21,107
Dec 2014167054.693.59$9,133
Nov 2014167070.464.25$11,767
Oct 2014166078.303.90$12,998
Sep 2014328086.164.05$28,260
Aug 2014160089.394.04$14,302
Jul 2014163096.564.18$15,739
Jun 2014167098.164.74$16,393
May 2014167094.734.73$15,820
Apr 2014328095.944.81$31,468
Mar 2014167095.895.06$16,014
Feb 2014161097.406.19$15,681
Jan 2014168090.404.86$15,187
Dec 2013326091.824.35$29,933
Nov 2013165088.853.74$14,660
Oct 2013334097.423.78$32,538
Sep 20133160104.113.72$32,899
Aug 20131650104.253.52$17,201
Jul 20131700102.523.72$17,428
Jun 2013333094.403.93$31,435
May 2013168094.834.15$15,931
Apr 2013323093.964.28$30,349
Mar 2013335093.623.91$31,363
Feb 2013161091.233.42$14,688
Jan 2013340091.603.42$31,144
Dec 2012166086.773.42$14,404
Nov 2012153086.953.62$13,303
Oct 2012329089.383.40$29,406
Sep 2012173094.672.92$16,378
Aug 2012331092.662.91$30,670
Jul 2012331085.133.02$28,178
Jun 2012165079.822.52$13,170
May 2012160091.612.49$14,658
Apr 20123330101.652.00$33,849
Mar 20121600105.052.22$16,808
Feb 20121700101.102.57$17,187
Jan 2012167098.092.73$16,381
Dec 2011166096.873.24$16,080
Nov 2011336095.723.31$32,162
Oct 2011166084.983.65$14,107
Sep 2011166083.623.99$13,881
Aug 2011335083.404.15$27,939
Jul 2011167094.144.52$15,721
Jun 2011521092.904.64$48,401
May 20110098.134.40$0
Apr 20113490105.964.33$36,980
Mar 2011344096.364.06$33,148
Feb 2011179085.644.18$15,330
Jan 2011341086.504.59$29,497
Dec 2010163085.734.35$13,974
Nov 2010174080.843.80$14,066
Oct 2010171078.103.51$13,355
Sep 2010167072.633.98$12,129
Aug 2010341073.684.42$25,125
Jul 2010336072.554.74$24,377
Jun 2010165070.364.91$11,609
May 2010341071.124.24$24,252
Apr 2010169081.694.12$13,806
Mar 2010514078.394.39$40,292
Feb 20100073.585.44$0
Jan 2010344074.365.96$25,580
Dec 2009350071.445.48$25,004
Nov 2009339074.593.75$25,286
Oct 2009345072.544.11$25,026
Sep 2009349065.543.06$22,873
Aug 2009345067.423.22$23,260
Jul 2009524061.133.46$32,032
Jun 2009342066.163.90$22,627
May 2009343054.743.93$18,776
Apr 2009346046.773.59$16,182
Mar 2009322042.144.06$13,569
Feb 2009497032.814.63$16,307
Jan 2009347035.865.37$12,443
Dec 2008172037.105.98$6,381
Nov 2008682055.496.86$37,844
Oct 2008345075.246.92$25,958
Sep 20085360101.767.88$54,543
Aug 20085220114.228.48$59,623
Jul 20081740131.0811.39$22,808
Jun 20081760131.3313.03$23,114
May 20083430123.1711.57$42,247
Apr 20081710110.3110.45$18,863
Mar 200800101.909.66$0
Feb 2008174092.538.77$16,100
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 2007152082.856.92$12,593
Sep 20070075.846.24$0
Aug 2007164069.066.39$11,326
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007173058.747.85$10,162
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 2006168054.906.01$9,223
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 2006175066.286.38$11,599
May 20060066.016.42$0
Apr 2006169064.397.36$10,882
Mar 20060056.707.08$0
Feb 2006169057.597.75$9,733
Jan 20060060.598.93$0
Dec 2005162054.9413.42$8,900
Nov 2005165054.6910.59$9,024
Oct 2005168058.3413.80$9,801
Sep 20050061.4512.08$0
Aug 2005170061.519.80$10,457
Jul 2005164055.697.84$9,133
Jun 2005173052.337.38$9,053
May 2005171045.226.65$7,733
Apr 2005170049.207.36$8,364
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 2004150039.866.75$5,979
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 2004163043.245.28$7,048
Aug 20040042.375.55$0
Jul 2004169038.286.08$6,469
Jun 20040036.106.43$0
May 2004176037.486.49$6,596
Apr 20040034.475.86$0
Mar 2004170034.365.53$5,841
Feb 20040032.455.51$0
Jan 2004169032.036.30$5,413
Dec 20030030.266.30$0
Nov 2003173028.804.60$4,982
Oct 2003171028.174.76$4,817
Sep 2003172026.314.75$4,525
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 2003158031.146.10$4,920
Feb 20030033.487.93$0
Jan 2003182030.315.58$5,516
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 2002185026.464.23$4,895
Sep 20020027.443.64$0
Aug 2002171025.963.16$4,439
Jul 20020024.583.06$0
Jun 2002174023.733.34$4,129
May 2002135024.663.58$3,329
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 2002184018.222.38$3,352
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 2001169019.782.53$3,343
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 200112023.933.20$287
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 2001163024.685.34$4,023
Mar 20010024.545.38$0
Feb 2001178027.755.77$4,940
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 2000175032.215.66$5,637
Oct 2000175031.235.15$5,465
Sep 2000172031.875.19$5,482
Aug 2000353029.644.54$10,463
Jul 200017517528.534.09$5,708
Jun 200047019129.304.40$14,611
May 200033521427.263.68$9,920
Apr 200034620324.513.12$9,113
Mar 200013716128.422.86$4,354
Feb 200031420227.622.73$9,223
Jan 200064535925.272.48$17,190
Dec 199935023524.282.42$9,068
Nov 199985739323.192.43$20,830
Oct 199934828620.982.80$8,103
Sep 199951630721.752.62$12,027
Aug 199953536719.262.88$11,359
Jul 1999340017.892.37$6,083
Jun 1999500015.942.36$7,970
May 1999514015.792.32$8,116
Apr 1999524015.102.21$7,912
Mar 1999687012.471.84$8,567
Feb 199950209.981.82$5,010
Jan 1999510010.381.90$5,294
Dec 199852409.201.77$4,821
Nov 1998662010.892.19$7,209
Oct 1998527012.421.97$6,545
Sep 1998686012.592.08$8,637
Aug 1998673011.301.91$7,605
Jul 1998671011.742.24$7,878
Jun 1998679011.242.24$7,632
May 1998485012.622.21$6,121
Apr 1998879013.042.51$11,462
Mar 1998683012.802.31$8,742
Feb 1998645013.952.30$8,998
Jan 1998538014.702.15$7,909
Dec 1997531016.322.41$8,666
Nov 1997430018.193.09$7,822
Oct 1997346019.253.15$6,661
Sep 1997346017.742.95$6,138
Aug 1997343017.862.55$6,126
Jul 1997349017.582.25$6,135
Jun 1997323017.242.26$5,569
May 1997363018.972.31$6,886
Apr 1997557017.882.08$9,959
Mar 1997367018.951.94$6,955
Feb 1997482020.492.21$9,876
Jan 1997544023.483.54$12,773
Dec 1996370023.32$8,628
Nov 1996372021.97$8,173
Oct 1996700023.31$16,317
Sep 1996357022.22$7,933
Aug 1996691020.26$14,000
Jul 1996712019.55$13,920
Jun 1996548018.73$10,264
May 1996642019.43$12,474
Apr 19961,104021.51$23,747
Mar 1996369019.38$7,151
Feb 1996673016.98$11,428
Jan 1996906017.07$15,465
Dec 1995732017.19$12,583
Nov 1995738016.00$11,808
Oct 1995718015.43$11,079
Sep 1995896016.18$14,497
Aug 1995883015.92$14,057
Jul 1995712015.24$10,851
Jun 1995877016.41$14,392
May 1995880017.56$15,453
Apr 1995709017.73$12,571
Mar 19951,199016.44$19,712
Feb 1995722016.58$11,971
Jan 1995888015.92$14,137
Dec 19941,237015.03$18,592
Nov 19941,286015.90$20,447
Oct 19941,105015.58$17,216
Sep 19941,227115.29$18,761
Aug 19941,227116.13$19,792
Jul 19941,082117.56$19,000
Jun 19941,271117.09$21,721
May 19941,258115.88$19,977
Apr 19941,088114.14$15,384
Mar 19941,420112.46$17,693
Feb 19941,223112.50$15,288
Jan 19941,190112.66$15,065
Dec 19931,080112.33$13,316
Nov 19931,218114.49$17,649
Oct 19931,432115.85$22,697
Sep 19931,259115.03$18,923
Aug 19931,614115.66$25,275
Jul 19931,430115.46$22,108
Jun 19931,184116.79$19,879
May 19931,050117.68$18,564
Apr 19931,249118.05$22,544
Mar 19931,896118.14$34,393
Feb 19931,219117.90$21,820
Jan 19931,528116.93$25,869

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                  168 bbl  × $ 98.93 =    $16,620
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $16,620

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. 7B/O/23159 is the state's own key, not one this site invented.