SEALY SMITH FOUNDATION -A-

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the MONAHANS, N. (QUEEN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 31371District 08Field 62417760NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$6 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 7 leases and 18 wells, and the rule below applies to all of them.

Discovered
1987-08-12
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

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA2none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition54,875 bbl$1,883,007
Casinghead gasProduction184,146 Mcf$529,803
Total$2,412,810

63,106 Mcf of this lease's gas, across 48 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 (6)

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 31.7260, -102.9471. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

31.72425, -102.94602 · 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
66.7%
4 of 6 wells
With a plug date
50.0%
3 of 6 wells
Median depth
4,945 ft
6 wells filed one
Completion to plug
11.7 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
466.7%
A plug date is filed
350.0%
BothOn the schedule and plugged. Neither fact cancels the other.
350.0%
NeitherNo plug date, and not on the schedule.
233.3%

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 3,600 and 10,190 ft, median 4,945 ft, over the 6 wells that filed a depth.

Completions filed
Feb 1988 – Feb 2000
6 of 6 wells
Plug dates filed
Dec 2004 – Oct 2013
3 of 6 wells; 3 filed none

Last completion to plug: a median of 11.7 years across the 3 wells that filed both dates, with the middle half between 9.1 years and 14.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

6 wells

42-49530200406,200 ftFeb 2000Yes
42-4950529566,147 ftJul 1998Dec 2004Yes
42-495033813010,190 ftOct 1995Oct 2013Yes
42-49532418603,742 ftApr 1993Dec 2004Yes
42-49532175553,600 ftApr 1988
42-49532176543,626 ftFeb 1988

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 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20254059.383.30$238
Sep 202513062.743.08$816
Aug 202523063.933.01$1,470
Jul 202526066.743.32$1,735
Jun 202523066.483.13$1,529
May 202526060.553.23$1,574
Apr 202524062.363.54$1,497
Mar 2025363467.704.27$2,582
Feb 2025404470.884.34$3,026
Jan 202504174.324.28$175
Dec 20248068.993.12$552
Nov 20241930169.052.20$1,974
Oct 20243228071.372.28$2,923
Sep 20242113269.612.36$1,774
Aug 20243054575.632.06$3,394
Jul 20241961479.932.15$2,837
Jun 20242860478.082.63$3,777
May 20242559378.812.20$3,274
Apr 20242767484.451.66$3,398
Mar 20241862680.301.55$2,413
Feb 20241053776.091.78$1,719
Jan 20241150273.023.30$2,459
Dec 20231252871.262.61$2,234
Nov 20231536977.892.81$2,204
Oct 20231657285.443.09$3,133
Sep 20231761489.042.74$3,193
Aug 20232153280.522.67$3,113
Jul 20232370374.852.64$3,579
Jun 20232374168.962.26$3,260
May 20231394670.622.23$3,025
Apr 20231594678.122.24$3,289
Mar 20231379272.852.39$2,842
Feb 20231783075.112.47$3,323
Jan 20231982876.533.39$4,259
Dec 20223587976.415.73$7,710
Nov 20222880685.005.65$6,931
Oct 20222168587.185.86$5,847
Sep 20223149284.888.16$6,648
Aug 2022811,07594.529.13$17,468
Jul 202269956101.587.54$14,219
Jun 202234480115.097.98$7,742
May 202279651109.378.43$14,130
Apr 202285349104.226.84$11,245
Mar 202253252108.885.08$7,050
Feb 2022306391.054.86$3,038
Jan 2022246781.844.54$2,268
Dec 2021277071.323.90$2,199
Nov 2021307077.435.24$2,689
Oct 2021479479.795.71$4,287
Sep 20218715069.865.35$6,880
Aug 20218816066.024.22$6,485
Jul 20215211170.783.98$4,123
Jun 2021586169.493.38$4,237
May 2021725363.483.02$4,731
Apr 2021696060.362.76$4,330
Mar 2021567261.302.72$3,628
Feb 2021635057.805.55$3,919
Jan 2021523150.412.81$2,708
Dec 2020343044.642.68$1,598
Nov 2020253338.772.71$1,059
Oct 2020225236.972.48$942
Sep 2020222837.091.99$872
Aug 2020223139.982.39$954
Jul 2020204238.371.83$844
Jun 202019034.901.69$663
May 202026016.921.81$440
Apr 202021014.751.80$310
Mar 20202319130.341.86$1,052
Feb 202027049.881.98$1,347
Jan 202049057.252.09$2,805
Dec 201945059.012.30$2,655
Nov 201940055.302.75$2,212
Oct 201945053.472.42$2,406
Sep 201939055.052.66$2,147
Aug 201946053.112.30$2,443
Jul 201955056.272.46$3,095
Jun 201956052.782.49$2,956
May 201973058.482.74$4,269
Apr 201997062.632.75$6,075
Mar 20191029456.803.06$6,081
Feb 2019938750.852.79$4,972
Jan 201912612846.033.23$6,213
Dec 201816113246.594.19$8,053
Nov 20184713452.934.24$3,056
Oct 201812217061.443.40$8,073
Sep 201816916759.543.11$10,581
Aug 201821217059.403.07$13,114
Jul 201819116265.142.93$12,917
Jun 201822916760.183.08$14,295
May 201816616865.382.90$11,340
Apr 201815615663.842.90$10,412
Mar 201816120061.222.79$10,414
Feb 201820818061.782.77$13,348
Jan 201824217962.874.01$15,932
Dec 201722417057.272.92$13,325
Nov 201719114655.423.12$11,041
Oct 201720314249.292.98$10,430
Sep 201717316247.523.09$8,721
Aug 201717618845.373.00$8,550
Jul 201723719743.873.09$11,005
Jun 201716223742.493.09$7,615
May 201716322245.373.26$8,120
Apr 201711619047.933.21$6,170
Mar 201712620746.772.98$6,511
Feb 20177518250.452.95$4,321
Jan 201711919749.413.42$6,553
Dec 20169720948.763.72$5,508
Nov 20169021042.492.64$4,379
Oct 201612629246.193.09$6,722
Sep 201611725641.553.10$5,655
Aug 201613211141.442.92$5,795
Jul 20169811441.622.92$4,412
Jun 20164511345.352.69$2,344
May 20165412642.521.99$2,547
Apr 20164117136.561.99$1,839
Mar 2016459533.011.79$1,656
Feb 2016298526.472.06$943
Jan 2016348527.352.36$1,131
Dec 2015189032.362.00$763
Nov 2015178138.792.17$835
Oct 2015205743.552.43$1,009
Sep 2015274242.992.76$1,277
Aug 2015496640.162.87$2,157
Jul 2015572448.152.95$2,815
Jun 2015552956.152.88$3,172
May 201510511355.212.96$6,131
Apr 201512834349.822.71$7,305
Mar 2015327242.892.93$1,584
Feb 20153511744.662.98$1,911
Jan 20154212943.433.10$2,224
Dec 20145313654.693.59$3,387
Nov 20145112670.464.25$4,129
Oct 20147613678.303.90$6,481
Sep 20145113886.164.05$4,952
Aug 20144415489.394.04$4,555
Jul 20146112596.564.18$6,413
Jun 20145514598.164.74$6,086
May 20146415294.734.73$6,781
Apr 2014749195.944.81$7,537
Mar 2014543695.895.06$5,360
Feb 2014624897.406.19$6,336
Jan 201489090.404.86$8,046
Dec 2013692391.824.35$6,436
Nov 2013501288.853.74$4,487
Oct 201381097.423.78$7,891
Sep 201361174104.113.72$6,998
Aug 201368281104.253.52$8,079
Jul 201381242102.523.72$9,204
Jun 20137721994.403.93$8,130
May 20137824694.834.15$8,417
Apr 20136121193.964.28$6,635
Mar 20138134993.623.91$8,949
Feb 20136321891.233.42$6,493
Jan 20135721791.603.42$5,963
Dec 20123919586.773.42$4,051
Nov 20125518586.953.62$5,453
Oct 20125414889.383.40$5,330
Sep 20125513694.672.92$5,604
Aug 20126720892.662.91$6,813
Jul 20125617085.133.02$5,281
Jun 20125918579.822.52$5,175
May 20125417791.612.49$5,387
Apr 201259155101.652.00$6,307
Mar 201262133105.052.22$6,809
Feb 201255154101.102.57$5,956
Jan 20123510998.092.73$3,731
Dec 20113414096.873.24$3,747
Nov 2011435895.723.31$4,308
Oct 2011636384.983.65$5,584
Sep 20112910383.623.99$2,836
Aug 20113311283.404.15$3,217
Jul 20113214294.144.52$3,654
Jun 20113313792.904.64$3,701
May 2011286598.134.40$3,034
Apr 20113168105.964.33$3,579
Mar 2011306996.364.06$3,171
Feb 2011255285.644.18$2,358
Jan 2011328386.504.59$3,149
Dec 2010307185.734.35$2,881
Nov 2010346880.843.80$3,007
Oct 2010345878.103.51$2,859
Sep 2010346072.633.98$2,708
Aug 2010363273.684.42$2,794
Jul 2010333672.554.74$2,565
Jun 201085770.364.91$843
May 201004471.124.24$186
Apr 201008481.694.12$346
Mar 201009778.394.39$426
Feb 201008573.585.44$463
Jan 201008574.365.96$507
Dec 200908371.445.48$455
Nov 200908174.593.75$304
Oct 200907972.544.11$325
Sep 200904465.543.06$135
Aug 20090767.423.22$23
Jul 200904961.133.46$170
Jun 200938866.163.90$541
May 2009319654.743.93$2,074
Apr 2009589746.773.59$3,061
Mar 2009667542.144.06$3,086
Feb 2009586932.814.63$2,223
Jan 2009485235.865.37$2,001
Dec 2008322837.105.98$1,355
Nov 2008302755.496.86$1,850
Oct 2008437675.246.92$3,761
Sep 20085737101.767.88$6,092
Aug 200859129114.228.48$7,833
Jul 200859102131.0811.39$8,895
Jun 20087992131.3313.03$11,574
May 20088695123.1711.57$11,692
Apr 20088587110.3110.45$10,286
Mar 200864150101.909.66$7,971
Feb 20086913192.538.77$7,534
Jan 2008837490.388.21$8,109
Dec 20071115088.337.30$10,170
Nov 20071085891.677.29$10,323
Oct 2007896182.856.92$7,796
Sep 2007865575.846.24$6,866
Aug 20071004569.066.39$7,193
Jul 20071256470.906.39$9,271
Jun 20071245162.007.55$8,073
May 20071036858.747.85$6,584
Apr 20071005059.617.81$6,351
Mar 20071245356.927.30$7,445
Feb 20071185855.108.22$6,978
Jan 20071336450.306.73$7,120
Dec 20061426356.656.92$8,480
Nov 20061416354.207.62$8,122
Oct 20061248954.906.01$7,343
Sep 200611324560.085.04$8,023
Aug 20061238868.717.34$9,097
Jul 2006998769.376.34$7,419
Jun 2006919466.286.38$6,632
May 200610343566.016.42$9,594
Apr 200615126964.397.36$11,703
Mar 20061717656.707.08$10,234
Feb 20061418557.597.75$8,779
Jan 20061248560.598.93$8,272
Dec 20051557854.9413.42$9,562
Nov 20051407054.6910.59$8,398
Oct 20051318358.3413.80$8,788
Sep 20051617261.4512.08$10,763
Aug 20051778661.519.80$11,730
Jul 20051366855.697.84$8,107
Jun 20051176352.337.38$6,588
May 20051106645.226.65$5,413
Apr 20051005849.207.36$5,347
Mar 20051024750.377.15$5,474
Feb 2005946745.226.31$4,674
Jan 20059024043.166.32$5,402
Dec 20046368739.866.75$7,149
Nov 2004601,04645.286.33$9,338
Oct 2004991,44749.706.52$14,348
Sep 200415590643.245.28$11,489
Aug 200418817742.375.55$8,948
Jul 200417016538.286.08$7,511
Jun 200413517736.106.43$6,012
May 200414717037.486.49$6,614
Apr 200423921734.475.86$9,510
Mar 200429428734.365.53$11,689
Feb 200428220032.455.51$10,253
Jan 200428820332.036.30$10,503
Dec 200327823830.266.30$9,912
Nov 200319716828.804.60$6,446
Oct 200319938328.174.76$7,429
Sep 200330027326.314.75$9,190
Aug 200329339529.765.13$10,746
Jul 200318138929.415.17$7,335
Jun 200313544228.565.98$6,500
May 200313738926.595.97$5,966
Apr 200313542326.675.41$5,888
Mar 200314543931.146.10$7,191
Feb 200312339333.487.93$7,233
Jan 200316845530.315.58$7,632
Dec 200212042626.914.85$5,297
Nov 200213542724.664.14$5,096
Oct 200217540126.464.23$6,326
Sep 200216140427.443.64$5,886
Aug 200229742225.963.16$9,045
Jul 200228539624.583.06$8,218
Jun 200228339123.733.34$8,021
May 200218442724.663.58$6,068
Apr 200226243623.653.51$7,728
Mar 200214963422.003.10$5,245
Feb 20022471,27918.222.38$7,539
Jan 20021521,26217.172.38$5,608
Dec 20011611,23516.932.36$5,646
Nov 20011581,23818.072.41$5,833
Oct 20011903,35719.782.53$12,248
Sep 20011633,30124.262.25$11,386
Aug 20011433,50424.873.05$14,255
Jul 20011443,67323.933.20$15,189
Jun 20011403,72624.563.82$17,687
May 20011523,94525.524.31$20,871
Apr 20011523,83324.685.34$24,202
Mar 20011623,81624.545.38$24,492
Feb 20011363,34127.755.77$23,042
Jan 20011703,40827.478.40$33,293
Dec 20001723,62026.889.12$37,647
Nov 20001683,58832.215.66$25,712
Oct 20001613,91431.235.15$25,168
Sep 200017385531.875.19$9,948
Aug 200018129529.644.54$6,704
Jul 200017930828.534.09$6,367
Jun 200017930629.304.40$6,590
May 200018733127.263.68$6,316
Apr 20002649824.513.12$6,776
Mar 200024910628.422.86$7,380
Feb 20002439927.622.73$6,982
Jan 200028610725.272.48$7,493
Dec 199930310124.282.42$7,602
Nov 19992789923.192.43$6,688
Oct 19992355520.982.80$5,085
Sep 19992135521.752.62$4,777
Aug 19992255819.262.88$4,500
Jul 1999121017.892.37$2,165
Jun 1999124015.942.36$1,977
May 1999126015.792.32$1,990
Apr 19991018915.102.21$1,722
Mar 199910110512.471.84$1,452
Feb 1999971059.981.82$1,159
Jan 199910412210.381.90$1,311
Dec 19981081119.201.77$1,190
Nov 19981089710.892.19$1,388
Oct 199812210412.421.97$1,720
Sep 199812611112.592.08$1,818
Aug 199813114911.301.91$1,765
Jul 199812911911.742.24$1,781
Jun 199813512511.242.24$1,797
May 199815114012.622.21$2,215
Apr 199816316613.042.51$2,541
Mar 199821013712.802.31$3,004
Feb 199816613513.952.30$2,626
Jan 199819415714.702.15$3,190
Dec 199720116016.322.41$3,666
Nov 199718916618.193.09$3,951
Oct 199723542419.253.15$5,859
Sep 199737052917.742.95$8,127
Aug 199741365917.862.55$9,060
Jul 199748279517.582.25$10,260
Jun 199738871217.242.26$8,296
May 199745681018.972.31$10,520
Apr 199745387117.882.08$9,914
Mar 199747497418.951.94$10,871
Feb 199746164720.492.21$10,873
Jan 199757383423.483.54$16,406
Dec 199650077123.32$11,660
Nov 199648151721.97$10,568
Oct 199637974323.31$8,834
Sep 199635579722.22$7,888
Aug 199640667220.26$8,226
Jul 199642871819.55$8,367
Jun 199637280518.73$6,968
May 199646590519.43$9,035
Apr 19963152,05721.51$6,776
Mar 19963151,89319.38$6,105
Feb 19963011,73916.98$5,111
Jan 19962941,64917.07$5,019
Dec 19953131,88717.19$5,380
Nov 19952961,93516.00$4,736
Oct 19953152,14415.43$4,860
Sep 19953152,08916.18$5,097
Aug 19953121,98215.92$4,967
Jul 19953382,08815.24$5,151
Jun 19953041,69016.41$4,989
May 19953261,67417.56$5,725
Apr 19953471,63017.73$6,152
Mar 19953961,69116.44$6,510
Feb 19953811,56616.58$6,317
Jan 19954201,83415.92$6,686
Dec 19943981,58315.03$5,982
Nov 19944041,73915.90$6,424
Oct 19944331,86215.58$6,746
Sep 19944411,73215.29$6,743
Aug 19943711,14716.13$5,984
Jul 19944041,10417.56$7,094
Jun 199441792317.09$7,127
May 199443295315.88$6,860
Apr 19944061,00414.14$5,741
Mar 199429765812.46$3,701
Feb 199424159712.50$3,013
Jan 199426467512.66$3,342
Dec 199335076612.33$4,316
Nov 199337280814.49$5,390
Oct 199348694215.85$7,703
Sep 19935291,11915.03$7,951
Aug 19935151,25015.66$8,065
Jul 19935771,11315.46$8,920
Jun 19935461,11816.79$9,167
May 19933151,15917.68$5,569
Apr 19932641,10118.05$4,765
Mar 19934181,21018.14$7,583
Feb 19934301,49117.90$7,697
Jan 19934641,57616.93$7,856

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.

Oct 2025 — as filed, then multipliedworked
Oil                    4 bbl  × $ 59.38 =       $238
Casinghead gas         0 Mcf  × $  3.30 =         $0

────────────────────────────────────────────────────
Month total                                     $238

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/31371 is the state's own key, not one this site invented.