SEALY-SMITH FOUNDATION -A-

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

Oil lease lease 31588District 08Field 62417450OilCasinghead gasSaveExport
Value, all time
$42.1 M
Jan 1993 – May 2026
Value, last 12 filed months
$802 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 5 leases and 17 wells, and the rule below applies to all of them.

Discovered
1957-03-31
as the register files it
Field class
Oil
the register's own label
Between wells
1,320 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 80 acres.

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
OilDisposition1,098,393 bbl$36,131,694
Casinghead gasProduction2,531,274 Mcf$5,935,207
Total$42,066,901

1,114,442 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 (8)

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 31.7258, -102.9391. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

31.72637, -102.93866 · 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
37.5%
3 of 8 wells
With a plug date
25.0%
2 of 8 wells
Median depth
12,600 ft
8 wells filed one
Completion to plug
13.8 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
337.5%
A plug date is filed
225.0%
BothOn the schedule and plugged. Neither fact cancels the other.
225.0%
NeitherNo plug date, and not on the schedule.
562.5%

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, 8 of 8 wells. Median 12,600 ft, with the middle half between 12,549 and 12,796 ft; the shallowest is 12,439 ft and the deepest 13,200 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, 8 of 8 wells, Sep 1987 – Aug 2009. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Sep 1987 – Aug 2009
8 of 8 wells
Plug dates filed
Feb 2002 – May 2022
2 of 8 wells; 6 filed none

Last completion to plug: a median of 13.8 years across the 2 wells that filed both dates, with the middle half between 11.7 years and 15.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

8 wells

42-495052772013,200 ftAug 2009Yes
42-495033873512,569 ftAug 2004May 2022Yes
42-495324192912,600 ftOct 1994
42-495323985612,800 ftJun 1992Feb 2002Yes
42-495033833112,488 ftMay 1992
42-495033853312,439 ftMar 1990
42-495052812412,600 ftNov 1988
42-495052802312,795 ftSep 1987

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 20262,1162,440106.413.05$232,595
Apr 20261,6732,35398.932.87$172,262
Mar 20266701,53789.753.15$64,973
Feb 20264281,13763.503.75$31,442
Jan 20266081,18459.138.00$45,421
Dec 20255991,10356.664.41$38,807
Nov 20255401,12358.593.93$36,048
Oct 20256221,40759.383.30$41,584
Sep 20254031,10562.743.08$28,684
Aug 20254231,19263.933.01$30,636
Jul 20255091,86466.743.32$40,150
Jun 20255101,68566.483.13$39,177
May 20257191,51760.553.23$48,439
Apr 20257981,80162.363.54$56,144
Mar 202516573067.704.27$14,286
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 202321089.042.74$1,870
Aug 20232659780.522.67$3,689
Jul 20232590474.852.64$4,259
Jun 20234988768.962.26$5,382
May 20234186970.622.23$4,831
Apr 2023711,49278.122.24$8,885
Mar 2023821,81072.852.39$10,305
Feb 20231332,39375.112.47$15,890
Jan 20231563,11276.533.39$22,481
Dec 20222893,78476.415.73$43,761
Nov 20222673,58185.005.65$42,914
Oct 20222644,02087.185.86$46,588
Sep 20223193,25584.888.16$53,650
Aug 20224472,90294.529.13$68,737
Jul 20222062,972101.587.54$43,341
Jun 20221051,489115.097.98$23,963
May 20222662,142109.378.43$47,156
Apr 20223512,049104.226.84$50,591
Mar 20226973,131108.885.08$91,784
Feb 20228413,92791.054.86$95,654
Jan 20226804,14281.844.54$74,446
Dec 20217354,28371.323.90$69,120
Nov 20216974,22377.435.24$76,084
Oct 20216905,04079.795.71$83,853
Sep 20217864,11769.865.35$76,940
Aug 20218644,67166.024.22$76,756
Jul 20215294,46570.783.98$55,223
Jun 20214471,65969.493.38$36,670
May 20216382,25563.483.02$47,305
Apr 20218272,97360.362.76$58,119
Mar 20217883,45361.302.72$57,686
Feb 20219193,31557.805.55$71,510
Jan 20211,0314,44450.412.81$64,462
Dec 20209774,63644.642.68$56,017
Nov 20201,0494,80938.772.71$53,686
Oct 20201,4704,71536.972.48$66,032
Sep 20201,5534,44437.091.99$66,449
Aug 20201,5214,86039.982.39$72,401
Jul 20201,3634,80538.371.83$61,068
Jun 20201,0984,93534.901.69$46,662
May 20209944,59916.921.81$25,165
Apr 20201,02854314.751.80$16,143
Mar 20201,0916,00430.341.86$44,246
Feb 2020914049.881.98$45,590
Jan 20201,516057.252.09$86,791
Dec 20191,341059.012.30$79,132
Nov 20191,172055.302.75$64,812
Oct 20191,300053.472.42$69,511
Sep 20191,006055.052.66$55,380
Aug 20191,165053.112.30$61,873
Jul 20191,294056.272.46$72,813
Jun 20191,033052.782.49$54,522
May 20191,334058.482.74$78,012
Apr 20191,706062.632.75$106,847
Mar 20191,7946,23156.803.06$120,979
Feb 20191,1945,46350.852.79$75,969
Jan 20191,2725,56446.033.23$76,512
Dec 20181,9495,30646.594.19$113,012
Nov 20185846,04252.934.24$56,513
Oct 20181,2377,30461.443.40$100,821
Sep 20181,5386,70859.543.11$112,421
Aug 20182,0997,44159.403.07$147,499
Jul 20181,8218,09365.142.93$142,348
Jun 20181,5836,66060.183.08$115,757
May 20189827,11365.382.90$84,837
Apr 20188695,66063.842.90$71,895
Mar 20188957,18861.222.79$74,824
Feb 20181,1257,70161.782.77$90,804
Jan 20181,1175,42362.874.01$91,968
Dec 20171,1606,07257.272.92$84,173
Nov 20171,0876,33155.423.12$79,984
Oct 20171,2185,44049.292.98$76,266
Sep 20171,1155,53947.523.09$70,085
Aug 20171,0445,62045.373.00$64,251
Jul 20171,4305,45343.873.09$79,569
Jun 20171,1595,54942.493.09$66,377
May 20171,3145,48845.373.26$77,526
Apr 20171,1915,98147.933.21$76,293
Mar 20171,9095,67446.772.98$106,213
Feb 20171,2225,36350.452.95$77,485
Jan 20172,0435,67749.413.42$120,353
Dec 20161,7476,12548.763.72$107,986
Nov 20161,6076,17342.492.64$84,605
Oct 20161,9517,77446.193.09$114,140
Sep 20161,4067,66941.553.10$82,198
Aug 20161,3286,91041.442.92$75,240
Jul 20169975,29941.622.92$56,991
Jun 20166883,36145.352.69$40,228
May 20166993,47542.521.99$36,640
Apr 20166422,27336.561.99$27,997
Mar 20168513,57033.011.79$34,496
Feb 20167734,63126.472.06$30,018
Jan 20161,1704,49027.352.36$42,615
Dec 20155443,73532.362.00$25,079
Nov 20154943,14138.792.17$25,970
Oct 20156252,24843.552.43$32,674
Sep 20158651,63742.992.76$41,702
Aug 20151,1192,55540.162.87$52,278
Jul 20156561,50848.152.95$36,028
Jun 20155552,31756.152.88$37,843
May 20157932,54555.212.96$51,303
Apr 20156742,25949.822.71$39,693
Mar 20154622,18542.892.93$26,228
Feb 20154981,28144.662.98$26,053
Jan 20155801,11543.433.10$28,647
Dec 20147551,26554.693.59$45,834
Nov 20146691,23170.464.25$52,372
Oct 20141,0251,35478.303.90$85,539
Sep 20147451,39486.164.05$69,829
Aug 20147471,55589.394.04$73,049
Jul 20141,1631,46496.564.18$118,418
Jun 20141,0111,57198.164.74$106,681
May 20141,1001,66594.734.73$112,073
Apr 20141,2163,15995.944.81$131,855
Mar 20147802,12795.895.06$85,550
Feb 20141,05451997.406.19$105,873
Jan 20141,57674590.404.86$146,092
Dec 20131,2591,50591.824.35$122,155
Nov 20139681,24588.853.74$90,661
Oct 20131,3481,53997.423.78$137,139
Sep 20139791,643104.113.72$108,032
Aug 20131,1851,849104.253.52$130,050
Jul 20131,4992,190102.523.72$161,819
Jun 20131,2971,80694.403.93$129,541
May 20131,3411,76694.834.15$134,494
Apr 20131,4652,14093.964.28$146,816
Mar 20131,5562,11593.623.91$153,948
Feb 20131,2942,00891.233.42$124,919
Jan 20131,2511,93891.603.42$121,219
Dec 20121,0222,05686.773.42$95,711
Nov 20121,4362,86786.953.62$135,253
Oct 20121,5232,23789.383.40$143,731
Sep 20121,6501,65494.672.92$161,033
Aug 20121,5582,40892.662.91$151,367
Jul 20121,4652,90185.133.02$133,479
Jun 20121,5712,77379.822.52$132,383
May 20121,4112,72591.612.49$136,042
Apr 20121,5732,783101.652.00$165,453
Mar 20121,6712,622105.052.22$181,365
Feb 20121,9192,571101.102.57$200,619
Jan 20121,8482,54098.092.73$188,215
Dec 20111,7072,53996.873.24$173,583
Nov 20111,5631,53695.723.31$154,696
Oct 20111,7932,46684.983.65$161,366
Sep 20111,6402,71083.623.99$147,938
Aug 20111,9184,12683.404.15$177,081
Jul 20111,9744,20494.144.52$204,823
Jun 20112,1712,89492.904.64$215,114
May 20111,8423,37798.134.40$195,631
Apr 20111,7482,689105.964.33$196,870
Mar 20111,4972,53196.364.06$154,520
Feb 20111,3121,93885.644.18$120,460
Jan 20111,7562,59786.504.59$163,811
Dec 20101,5992,18485.734.35$146,578
Nov 20101,7422,51180.843.80$150,353
Oct 20101,7742,64978.103.51$147,844
Sep 20101,6192,92672.633.98$129,232
Aug 20101,6652,59573.684.42$134,145
Jul 20101,3662,51672.554.74$111,020
Jun 20101,4172,27470.364.91$110,866
May 20101,5152,68071.124.24$119,097
Apr 20101,7382,91381.694.12$153,987
Mar 20101,1653,38978.394.39$106,198
Feb 20101,5243,05673.585.44$128,768
Jan 20101,5653,27074.365.96$135,876
Dec 20091,4613,47971.445.48$123,452
Nov 20091,3453,15574.593.75$112,160
Oct 20091,5933,78472.544.11$131,109
Sep 20091,6551,65565.543.06$113,541
Aug 20091,51922867.423.22$103,145
Jul 20091,2421,47161.133.46$81,020
Jun 20091,4312,42366.163.90$104,113
May 20091,3952,64754.743.93$86,754
Apr 20091,2792,65446.773.59$69,340
Mar 20091,4502,70442.144.06$72,079
Feb 20091,3753,20032.814.63$59,939
Jan 20091,5322,96435.865.37$70,857
Dec 20081,7192,63437.105.98$79,519
Nov 20081,5792,39855.496.86$104,070
Oct 20081,7603,21075.246.92$154,642
Sep 20081,8403,223101.767.88$212,626
Aug 20081,8503,140114.228.48$237,944
Jul 20081,7643,146131.0811.39$267,056
Jun 20081,5773,066131.3313.03$247,065
May 20081,7503,341123.1711.57$254,217
Apr 20081,9333,111110.3110.45$245,754
Mar 20081,8243,164101.909.66$216,443
Feb 20082,3173,16992.538.77$242,186
Jan 20082,0333,57190.388.21$213,045
Dec 20072,0683,44688.337.30$207,829
Nov 20071,7733,31391.677.29$186,688
Oct 20072,0223,64282.856.92$192,733
Sep 20071,8003,01375.846.24$155,326
Aug 20071,8502,13669.066.39$141,406
Jul 20072,3063,55170.906.39$186,179
Jun 20072,1913,57762.007.55$162,843
May 20071,7903,84758.747.85$135,329
Apr 20071,7682,91059.617.81$128,104
Mar 20072,1173,65856.927.30$147,210
Feb 20072,1193,34855.108.22$144,264
Jan 20071,9243,67550.306.73$121,498
Dec 20062,0413,27056.656.92$138,246
Nov 20061,8494,13454.207.62$131,706
Oct 20062,0264,22854.906.01$136,654
Sep 20061,7493,71660.085.04$123,798
Aug 20061,9343,90268.717.34$161,526
Jul 20061,8883,79069.376.34$155,010
Jun 20061,8313,80466.286.38$145,643
May 20061,8383,32866.016.42$142,709
Apr 20062,0023,49264.397.36$154,612
Mar 20061,6432,64356.707.08$111,878
Feb 20061,7113,14357.597.75$122,898
Jan 20061,9243,90360.598.93$151,442
Dec 20052,1596,36454.9413.42$203,991
Nov 20051,8425,88754.6910.59$163,073
Oct 20051,8157,34558.3413.80$207,217
Sep 20051,8814,77161.4512.08$173,216
Aug 20052,1504,53561.519.80$176,675
Jul 20051,7519,10055.697.84$168,890
Jun 20051,6766,22952.337.38$133,682
May 20051,6906,03145.226.65$116,535
Apr 20051,3325,61849.207.36$106,886
Mar 20051,9095,28550.377.15$133,970
Feb 20052,2776,29645.226.31$142,706
Jan 20053,0427,51043.166.32$178,772
Dec 20042,7716,91239.866.75$157,116
Nov 20042,3049,20245.286.33$162,578
Oct 20042,8968,51649.706.52$199,414
Sep 20042,1258,23143.245.28$135,377
Aug 20042,1888,40942.375.55$139,381
Jul 20042,3677,16338.286.08$134,190
Jun 20042,2417,52736.106.43$129,321
May 20042,3597,09337.486.49$134,481
Apr 20042,4066,86834.475.86$123,171
Mar 20042,1824,21434.365.53$98,278
Feb 20041,9844,45832.455.51$88,943
Jan 20042,2523,39432.036.30$93,513
Dec 20032,5324,07830.266.30$102,316
Nov 20032,5544,23928.804.60$93,034
Oct 20032,6034,58328.174.76$95,140
Sep 20032,4574,41226.314.75$85,598
Aug 20032,6744,63329.765.13$103,344
Jul 20032,7375,30729.415.17$107,937
Jun 20032,4846,52428.565.98$109,976
May 20032,5795,46726.595.97$101,228
Apr 20032,6904,93026.675.41$98,400
Mar 20033,0545,44231.146.10$128,276
Feb 20032,7415,09933.487.93$132,183
Jan 20033,6046,19230.315.58$143,801
Dec 20022,6885,79026.914.85$100,437
Nov 20022,9165,16324.664.14$93,268
Oct 20022,8406,44226.464.23$102,390
Sep 20022,7615,92527.443.64$97,300
Aug 20024,0345,91225.963.16$123,429
Jul 20023,2715,27724.583.06$96,558
Jun 20023,0895,72423.733.34$92,410
May 20023,2944,11924.663.58$95,993
Apr 20023,1234,49223.653.51$89,636
Mar 20023,0275,45622.003.10$83,522
Feb 20022,9305,88218.222.38$67,358
Jan 20023,1646,02117.172.38$68,630
Dec 20013,5676,94416.932.36$76,808
Nov 20013,3397,05318.072.41$77,302
Oct 20013,5893,07419.782.53$78,764
Sep 20012,9552,73724.262.25$77,850
Aug 20012,9273,02924.873.05$82,043
Jul 20013,2543,44223.933.20$88,873
Jun 20013,2293,72624.563.82$93,553
May 20013,4263,86725.524.31$104,088
Apr 20013,3643,65724.685.34$102,535
Mar 20013,7033,79324.545.38$111,264
Feb 20013,2213,32827.755.77$108,576
Jan 20012,8722,61827.478.40$100,882
Dec 20003,3953,30326.889.12$121,389
Nov 20003,4203,36232.215.66$129,180
Oct 20003,2093,45731.235.15$118,005
Sep 20003,6583,78831.875.19$136,227
Aug 20004,0033,97529.644.54$136,698
Jul 20004,1394,43328.534.09$136,216
Jun 20003,6814,18629.304.40$126,260
May 20004,6495,13327.263.68$145,620
Apr 20004,3245,43224.513.12$122,907
Mar 20004,0125,70528.422.86$130,336
Feb 20003,9115,35727.622.73$122,628
Jan 20004,4825,69325.272.48$127,382
Dec 19994,7645,37524.282.42$128,697
Nov 19994,1325,05623.192.43$108,127
Oct 19993,1885,30220.982.80$81,750
Sep 19992,8185,49821.752.62$75,690
Aug 19992,9645,83419.262.88$73,863
Jul 19993,1816,81417.892.37$73,073
Jun 19993,2917,17415.942.36$69,404
May 19993,4486,75115.792.32$70,113
Apr 19993,2903,70415.102.21$57,858
Mar 19993,3054,43012.471.84$49,357
Feb 19993,0414,2149.981.82$38,009
Jan 19993,3915,08510.381.90$44,860
Dec 19983,4644,5889.201.77$40,005
Nov 19983,2143,61410.892.19$42,900
Oct 19983,5424,40612.421.97$52,668
Sep 19983,7774,85012.592.08$57,653
Aug 19983,9126,45111.301.91$56,510
Jul 19983,8005,09511.742.24$56,011
Jun 19984,0955,51711.242.24$58,371
May 19984,5296,17612.622.21$70,782
Apr 19982,8268,86313.042.51$59,056
Mar 19983,6377,32412.802.31$63,468
Feb 19982,9577,59513.952.30$58,712
Jan 19983,4939,04614.702.15$70,839
Dec 19973,6179,26216.322.41$81,361
Nov 19973,3929,60818.193.09$91,372
Oct 19973,58513,42119.253.15$111,285
Sep 19973,54012,13517.742.95$98,657
Aug 19973,95315,12917.862.55$109,251
Jul 19974,60818,24117.582.25$121,995
Jun 19973,71316,32917.242.26$100,870
May 19974,36318,59818.972.31$125,700
Apr 19974,32919,99617.882.08$119,050
Mar 19974,52722,34718.951.94$129,121
Feb 19973,98613,85720.492.21$112,240
Jan 19974,95821,23823.483.54$191,590
Dec 19964,41319,63523.32$102,911
Nov 19964,26413,15321.97$93,680
Oct 19964,79925,75723.31$111,865
Sep 19964,49127,62022.22$99,790
Aug 19965,14023,29820.26$104,136
Jul 19965,41224,90619.55$105,805
Jun 19964,70127,90018.73$88,050
May 19965,91231,38219.43$114,870
Apr 19966,19224,34021.51$133,190
Mar 19966,20122,39519.38$120,175
Feb 19965,91720,57516.98$100,471
Jan 19965,78519,50817.07$98,750
Dec 19956,15022,33017.19$105,719
Nov 19955,81922,89616.00$93,104
Oct 19956,19925,36515.43$95,651
Sep 19956,18824,72016.18$100,122
Aug 19956,14223,45215.92$97,781
Jul 19957,85124,70515.24$119,649
Jun 19957,05919,99316.41$115,838
May 19957,56919,81117.56$132,912
Apr 19958,06915,81817.73$143,063
Mar 19959,19916,41116.44$151,232
Feb 19958,84615,19816.58$146,667
Jan 19959,76217,79615.92$155,411
Dec 19949,24815,36915.03$138,997
Nov 19949,36916,88215.90$148,967
Oct 19948,43315,58815.58$131,386
Sep 19948,69414,50315.29$132,931
Aug 199411,47140,54116.13$185,027
Jul 199412,49239,00417.56$219,360
Jun 199412,89832,61717.09$220,427
May 199413,36333,66415.88$212,204
Apr 199412,57335,48614.14$177,782
Mar 199411,23523,38112.46$139,988
Feb 199412,71219,00112.50$158,900
Jan 199413,32721,42312.66$168,720
Dec 199313,31318,08912.33$164,149
Nov 199314,15319,09814.49$205,077
Oct 199318,38722,27315.85$291,434
Sep 199316,87520,93715.03$253,631
Aug 199316,41226,63015.66$257,012
Jul 199318,38623,71415.46$284,248
Jun 199317,77423,81416.79$298,425
May 199316,75927,07317.68$296,299
Apr 199314,87723,43918.05$268,530
Mar 199313,91625,76818.14$252,436
Feb 199314,31422,98017.90$256,221
Jan 199315,33124,20416.93$259,554

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.

May 2026 — as filed, then multipliedworked
Oil                2,116 bbl  × $106.41 =   $225,164
Casinghead gas     2,440 Mcf  × $  3.05 =     $7,432

────────────────────────────────────────────────────
Month total                                 $232,595

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/31588 is the state's own key, not one this site invented.