SEALY & SMITH FOUNDATION "B"

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 31810District 08Field 62417760NGPA filingOilCasinghead gasSaveExport
Value, all time
$11.0 M
Jan 1993 – May 2026
Value, last 12 filed months
$942 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
NGPA1none

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
OilDisposition210,726 bbl$10,065,924
Casinghead gasProduction289,071 Mcf$915,559
Total$10,981,483

25,453 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 (5)

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, -102.9602. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

31.72618, -102.96052 · 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
20.0%
1 of 5 wells
With a plug date
20.0%
1 of 5 wells
Median depth
3,735 ft
5 wells filed one
Completion to plug
15.4 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
120.0%
A plug date is filed
120.0%
BothOn the schedule and plugged. Neither fact cancels the other.
120.0%
NeitherNo plug date, and not on the schedule.
480.0%

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

Between 3,650 and 10,318 ft, median 3,735 ft, over the 5 wells that filed a depth.

Completions filed
Apr 1988 – Feb 2018
5 of 5 wells
Plug dates filed
Apr 2024
1 of 5 wells; 4 filed none

Last completion to plug: a median of 15.4 years across the 1 well that filed both dates, with the middle half between 15.4 years and 15.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

5 wells

42-4953217463,650 ftFeb 2018
42-49533455913,730 ftFeb 2014
42-49533454873,735 ftNov 2013
42-4953241173,750 ftNov 2008Apr 2024Yes
42-49510713410,318 ftApr 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 2026965272106.413.05$103,514
Apr 20261,10936398.932.87$110,755
Mar 20261,27646489.753.15$115,982
Feb 20261,23538463.503.75$79,863
Jan 20261,23628559.138.00$75,364
Dec 202589347756.664.41$52,703
Nov 20251,27826458.593.93$75,915
Oct 20251,17829959.383.30$70,938
Sep 20251,17529362.743.08$74,621
Aug 202597934263.933.01$63,619
Jul 202597447666.743.32$66,583
Jun 202576654166.483.13$52,616
May 202595777660.553.23$60,455
Apr 202555426762.363.54$35,493
Mar 20255835267.704.27$39,691
Feb 2025775470.884.34$5,692
Jan 202525428674.324.28$20,101
Dec 2024535068.993.12$36,910
Nov 20248972,04969.052.20$66,442
Oct 20249262,06671.372.28$70,802
Sep 20247291,35469.612.36$53,947
Aug 20245931,56175.632.06$48,070
Jul 20246061,39679.932.15$51,434
Jun 20246831,14978.082.63$56,355
May 20247971,42278.812.20$65,938
Apr 20243451,66084.451.66$31,890
Mar 20246041,28580.301.55$50,487
Feb 20242441,51276.091.78$21,263
Jan 20247111,44273.023.30$56,672
Dec 20231412,00971.262.61$15,293
Nov 202314060077.892.81$12,589
Oct 20234541,60185.443.09$43,733
Sep 20235484489.042.74$7,117
Aug 20233221,13280.522.67$28,953
Jul 20236811,23874.852.64$54,243
Jun 20234951,58268.962.26$37,708
May 20237251,88670.622.23$55,400
Apr 20236831,38278.122.24$56,449
Mar 20237281,18872.852.39$55,878
Feb 202327488675.112.47$22,765
Jan 20233871,01376.533.39$33,049
Dec 20225221,07676.415.73$46,051
Nov 20226111,01885.005.65$57,683
Oct 20224381,31387.185.86$45,884
Sep 20223731,31684.888.16$42,404
Aug 20226401,27694.529.13$72,139
Jul 20224301,343101.587.54$53,808
Jun 2022392434115.097.98$48,577
May 20226351,479109.378.43$81,922
Apr 20225051,789104.226.84$64,864
Mar 20224611,449108.885.08$57,549
Feb 202237392591.054.86$38,456
Jan 202227197481.844.54$26,598
Dec 20214621,08771.323.90$37,188
Nov 202125092377.435.24$24,191
Oct 20212711,02379.795.71$27,468
Sep 202126590469.865.35$23,350
Aug 20212411,04366.024.22$20,313
Jul 20211691,06270.783.98$16,191
Jun 202123793569.493.38$19,630
May 20212381,00463.483.02$18,138
Apr 20213131,13760.362.76$22,029
Mar 202119392061.302.72$14,330
Feb 202141686457.805.55$28,838
Jan 202156099650.412.81$31,029
Dec 20205421,09444.642.68$27,122
Nov 202058188338.772.71$24,915
Oct 20204861,28036.972.48$21,140
Sep 20203831,04537.091.99$16,286
Aug 202035989839.982.39$16,495
Jul 202034798038.371.83$15,103
Jun 20204711,00334.901.69$18,133
May 20207111,14616.921.81$14,110
Apr 202062993414.751.80$10,963
Mar 20203241,14130.341.86$11,948
Feb 2020262049.881.98$13,069
Jan 2020440057.252.09$25,190
Dec 2019737059.012.30$43,490
Nov 2019816055.302.75$45,125
Oct 2019763053.472.42$40,798
Sep 2019676055.052.66$37,214
Aug 2019721053.112.30$38,292
Jul 2019741056.272.46$41,696
Jun 201947713152.782.49$25,502
May 20196821,78058.482.74$44,761
Apr 20195541,97862.632.75$40,138
Mar 20197561,67056.803.06$48,055
Feb 20194331,53050.852.79$26,290
Jan 20195931,91246.033.23$33,468
Dec 20185481,25046.594.19$30,763
Nov 20186261,90152.934.24$41,189
Oct 20185771,90861.443.40$41,934
Sep 20187221,63359.543.11$48,063
Aug 20181,02292059.403.07$63,528
Jul 20188731,10865.142.93$60,116
Jun 20184282,17460.183.08$32,446
May 20187282,22965.382.90$54,063
Apr 20186132,36363.842.90$45,989
Mar 20188822,25161.222.79$60,269
Feb 20188541,93961.782.77$58,124
Jan 20189472,12462.874.01$68,054
Dec 20177151,94557.272.92$46,630
Nov 20179912,28655.423.12$62,050
Oct 20171,0543,06749.292.98$61,103
Sep 20177362,08147.523.09$41,399
Aug 20171,1482,70145.373.00$60,200
Jul 20171,0892,04843.873.09$54,097
Jun 20178321,67242.493.09$40,514
May 20178542,31545.373.26$46,301
Apr 20173602,02547.933.21$23,758
Mar 20174821,93346.772.98$28,311
Feb 20174661,84850.452.95$28,966
Jan 20174652,26749.413.42$30,726
Dec 20164982,67248.763.72$34,230
Nov 20166822,84142.492.64$36,491
Oct 20168342,82346.193.09$47,246
Sep 20167842,91041.553.10$41,598
Aug 20161,0293,43241.442.92$52,678
Jul 20168973,78341.622.92$48,396
Jun 20168732,79545.352.69$47,097
May 20161,1464,57242.521.99$57,831
Apr 20161,1773,20936.561.99$49,420
Mar 20161,3373,29633.011.79$50,047
Feb 20161,0423,47326.472.06$34,749
Jan 20161,0692,89927.352.36$36,091
Dec 201558992932.362.00$20,919
Nov 20154511,33938.792.17$20,396
Oct 20158542,28243.552.43$42,729
Sep 201583112,70742.992.76$70,776
Aug 201569083940.162.87$30,120
Jul 20155934,97148.152.95$43,193
Jun 201558967356.152.88$35,013
May 20151,5341,38455.212.96$88,782
Apr 20152,6321,50749.822.71$135,205
Mar 20152,05850042.892.93$89,735
Feb 20151,3222,01144.662.98$65,026
Jan 20151,0491,20743.433.10$49,301
Dec 20141,4841,46054.693.59$86,403
Nov 20142,1263,04770.464.25$162,753
Oct 20143,5602,87278.303.90$289,952
Sep 20141,1976,17586.164.05$128,114
Aug 20141,3724,24189.394.04$139,756
Jul 20142,3433,55196.564.18$241,082
Jun 20141,75338698.164.74$173,903
May 20147122,53794.734.73$79,439
Apr 20141,0361,56695.944.81$106,925
Mar 20145503,24795.895.06$69,159
Feb 20142343,23797.406.19$42,835
Jan 20143803,16090.404.86$49,712
Dec 20135492,19691.824.35$59,972
Nov 201337930988.853.74$34,829
Oct 201315323297.423.78$15,782
Sep 2013148228104.113.72$16,256
Aug 2013173115104.253.52$18,440
Jul 2013184206102.523.72$19,630
Jun 201316523194.403.93$16,485
May 201314220794.834.15$14,325
Apr 201317020793.964.28$16,860
Mar 201317122993.623.91$16,905
Feb 201315121791.233.42$14,518
Jan 201315211091.603.42$14,299
Dec 201211910886.773.42$10,695
Nov 201217019886.953.62$15,499
Oct 201216621989.383.40$15,582
Sep 201215816994.672.92$15,451
Aug 201219616592.662.91$18,641
Jul 201217622485.133.02$15,660
Jun 201218421979.822.52$15,239
May 20121565191.612.49$14,418
Apr 201212743101.652.00$12,995
Mar 201218487105.052.22$19,523
Feb 2012193152101.102.57$19,903
Jan 201219120498.092.73$19,293
Dec 201118014396.873.24$17,900
Nov 20111648995.723.31$15,993
Oct 201119415584.983.65$17,052
Sep 201115716383.623.99$13,778
Aug 201118312783.404.15$15,789
Jul 201118122194.144.52$18,038
Jun 201116915892.904.64$16,433
May 201118519598.134.40$19,013
Apr 2011180224105.964.33$20,043
Mar 201116022096.364.06$16,310
Feb 201113518085.644.18$12,314
Jan 201116621186.504.59$15,327
Dec 201016023385.734.35$14,730
Nov 201015116880.843.80$12,844
Oct 201014015278.103.51$11,467
Sep 201013617372.633.98$10,566
Aug 201014013573.684.42$10,912
Jul 201013514272.554.74$10,467
Jun 201012914570.364.91$9,788
May 201016117971.124.24$12,208
Apr 201014519081.694.12$12,628
Mar 201010818678.394.39$9,282
Feb 201013418273.585.44$10,850
Jan 201013714374.365.96$11,040
Dec 200912713471.445.48$9,808
Nov 200912312974.593.75$9,659
Oct 200914014872.544.11$10,764
Sep 200913613765.543.06$9,333
Aug 200913914367.423.22$9,832
Jul 200914114561.133.46$9,122
Jun 200915713866.163.90$10,925
May 200916818354.743.93$9,915
Apr 200917218046.773.59$8,690
Mar 200918315842.144.06$8,353
Feb 200918315732.814.63$6,732
Jan 200918914735.865.37$7,567
Dec 200822015037.105.98$9,059
Nov 200819316755.496.86$11,855
Oct 200821712775.246.92$17,206
Sep 2008239409101.767.88$27,542
Aug 2008213144114.228.48$25,550
Jul 2008195141131.0811.39$27,167
Jun 2008195369131.3313.03$30,418
May 2008189121123.1711.57$24,680
Apr 2008186129110.3110.45$21,866
Mar 2008193131101.909.66$20,933
Feb 200820123592.538.77$20,660
Jan 200821416190.388.21$20,662
Dec 200722016688.337.30$20,645
Nov 200721712891.677.29$20,826
Oct 200725013882.856.92$21,668
Sep 200721611975.846.24$17,125
Aug 200726116769.066.39$19,091
Jul 200723211470.906.39$17,177
Jun 200722712762.007.55$15,033
May 20072494358.747.85$14,964
Apr 20072633559.617.81$15,951
Mar 20072525956.927.30$14,775
Feb 20072493655.108.22$14,016
Jan 20072795150.306.73$14,377
Dec 20062966356.656.92$17,204
Nov 20062595554.207.62$14,457
Oct 20062742454.906.01$15,187
Sep 20062661760.085.04$16,067
Aug 20062582968.717.34$17,940
Jul 20062833269.376.34$19,835
Jun 20063194666.286.38$21,437
May 20063546166.016.42$23,759
Apr 20063305464.397.36$21,646
Mar 20063058656.707.08$17,903
Feb 20063063657.597.75$17,902
Jan 20063473760.598.93$21,355
Dec 20053344154.9413.42$18,900
Nov 20053017054.6910.59$17,203
Oct 20052038158.3413.80$12,960
Sep 20052846961.4512.08$18,285
Aug 200542720061.519.80$28,224
Jul 200547032855.697.84$28,747
Jun 200526435752.337.38$16,450
May 200528131045.226.65$14,769
Apr 200530545949.207.36$18,384
Mar 200524422050.377.15$13,864
Feb 20051916445.226.31$9,041
Jan 200525316043.166.32$11,931
Dec 20042267139.866.75$9,488
Nov 20043645245.286.33$16,811
Oct 200437812349.706.52$19,588
Sep 20042712643.245.28$11,855
Aug 20042705242.375.55$11,729
Jul 20044039838.286.08$16,023
Jun 20044317836.106.43$16,061
May 20043977737.486.49$15,380
Apr 20043758834.475.86$13,442
Mar 20043614034.365.53$12,625
Feb 20042701232.455.51$8,828
Jan 20043033332.036.30$9,913
Dec 20033142930.266.30$9,684
Nov 20033022228.804.60$8,799
Oct 200336820028.174.76$11,318
Sep 20033223426.314.75$8,633
Aug 20033584129.765.13$10,864
Jul 20033723929.415.17$11,142
Jun 20033255828.565.98$9,629
May 20033355326.595.97$9,224
Apr 20033931426.675.41$10,557
Mar 20033126631.146.10$10,118
Feb 20032226433.487.93$7,940
Jan 20032905130.315.58$9,075
Dec 20022681726.914.85$7,294
Nov 20022422124.664.14$6,055
Oct 20022131326.464.23$5,691
Sep 2002286227.443.64$7,855
Aug 2002331525.963.16$8,609
Jul 20024473024.583.06$11,079
Jun 20026473923.733.34$15,484
May 2002525524.663.58$12,964
Apr 20023159023.653.51$7,766
Mar 20022137122.003.10$4,906
Feb 20022496418.222.38$4,689
Jan 20021703417.172.38$3,000
Dec 200131011816.932.36$5,527
Nov 20012947518.072.41$5,493
Oct 20012214019.782.53$4,473
Sep 20012137224.262.25$5,329
Aug 20012274724.873.05$5,789
Jul 20012269623.933.20$5,715
Jun 200124911224.563.82$6,544
May 200124711225.524.31$6,786
Apr 20011295124.685.34$3,456
Mar 200122010424.545.38$5,958
Feb 20011904727.755.77$5,544
Jan 20012285127.478.40$6,692
Dec 200020910026.889.12$6,530
Nov 20002609432.215.66$8,906
Oct 20002539131.235.15$8,369
Sep 20002738431.875.19$9,136
Aug 20003087629.644.54$9,474
Jul 200029710328.534.09$8,895
Jun 20003182829.304.40$9,441
May 20003488927.263.68$9,814
Apr 20002619724.513.12$6,699
Mar 20002773228.422.86$7,964
Feb 20002867227.622.73$8,096
Jan 20002916725.272.48$7,520
Dec 19993113124.282.42$7,626
Nov 19992225123.192.43$5,272
Oct 19993558120.982.80$7,675
Sep 199971510421.752.62$15,824
Aug 199971510619.262.88$14,076
Jul 199977410017.892.37$14,084
Jun 19997768615.942.36$12,573
May 199972611715.792.32$11,735
Apr 19991,07111615.102.21$16,428
Mar 19991,22710012.471.84$15,485
Feb 19991,116739.981.82$11,270
Jan 19991,35517810.381.90$14,403
Dec 19984111109.201.77$3,976
Nov 199824513510.892.19$2,963
Oct 19983329912.421.97$4,318
Sep 19986712712.592.08$1,108
Aug 199812720811.301.91$1,832
Jul 199816111011.742.24$2,136
Jun 199818014311.242.24$2,343
May 199821714612.622.21$3,061
Apr 199823215713.042.51$3,419
Mar 199823614512.802.31$3,356
Feb 199821913813.952.30$3,372
Jan 199825910514.702.15$4,034
Dec 199726012716.322.41$4,549
Nov 199724014418.193.09$4,810
Oct 199727612919.253.15$5,719
Sep 199713719017.742.95$2,992
Aug 199728416817.862.55$5,501
Jul 199730719817.582.25$5,842
Jun 199719041117.242.26$4,203
May 199732818418.972.31$6,647
Apr 199720414017.882.08$3,939
Mar 199726719518.951.94$5,438
Feb 199741313720.492.21$8,765
Jan 199747718623.483.54$11,858
Dec 199647218923.32$11,007
Nov 199653324021.97$11,710
Oct 199654930523.31$12,797
Sep 199632723622.22$7,266
Aug 199655929320.26$11,325
Jul 199665228119.55$12,747
Jun 199654935918.73$10,283
May 199664230419.43$12,474
Apr 19961,08031521.51$23,231
Mar 19961,05175319.38$20,368
Feb 19969691,21616.98$16,454
Jan 199697651817.07$16,660
Dec 199599045917.19$17,018
Nov 199597864016.00$15,648
Oct 19951,05366315.43$16,248
Sep 199595834116.18$15,500
Aug 199599845915.92$15,888
Jul 19951,00547315.24$15,316
Jun 199599443916.41$16,312
May 199596349217.56$16,910
Apr 199581436417.73$14,432
Mar 199585554316.44$14,056
Feb 199577155416.58$12,783
Jan 199584157915.92$13,389
Dec 199491650115.03$13,767
Nov 199486745615.90$13,785
Oct 199488949415.58$13,851
Sep 199482659315.29$12,630
Aug 199486542816.13$13,952
Jul 19941,37653717.56$24,163
Jun 19941,35084017.09$23,072
May 19941,40570115.88$22,311
Apr 19941,37766914.14$19,471
Mar 19941,31858712.46$16,422
Feb 19941,05764112.50$13,213
Jan 19941,21572012.66$15,382
Dec 19931,18155012.33$14,562
Nov 19931,16254614.49$16,837
Oct 19931,18877715.85$18,830
Sep 199386161315.03$12,941
Aug 199391574015.66$14,329
Jul 199385258315.46$13,172
Jun 199393963416.79$15,766
May 199392765617.68$16,389
Apr 199383057018.05$14,982
Mar 199385352218.14$15,473
Feb 199375553217.90$13,515
Jan 199380754816.93$13,663

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                  965 bbl  × $106.41 =   $102,686
Casinghead gas       272 Mcf  × $  3.05 =       $828

────────────────────────────────────────────────────
Month total                                 $103,514

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/31810 is the state's own key, not one this site invented.