HILL - MAYO BROWN UNIT

Operated by SCHALK OIL COMPANY, INC. (P-5 750400) in the SOLDIER MOUND (TANNEHILL) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 68627District 8AField 84521380OilCasinghead gasSave
Value, all time
$3.2 M
Nov 2003 – May 2026
Value, last 12 filed months
$30 k
at the published price for each month
Months reported
271
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition51,941 bbl$3,222,051
Casinghead gasProduction1,029 Mcf$7,473
Total$3,229,523

Wells on this lease (1)

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 33.5084, -100.8498. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

33.50835, -100.84977 · 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
0.0%
0 of 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
5,060 ft
1 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
1100.0%

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

The one well that filed a depth was drilled to 5,060 ft.

Completions filed
Oct 2003
1 of 1 wells

1 well

42-1253089415,060 ftOct 2003

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 (271)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

271 months

May 202600106.413.05$0
Apr 20260098.932.87$0
Mar 2026111089.753.15$9,962
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 2025152058.593.93$8,906
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 2025171066.743.32$11,413
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 2025173067.704.27$11,712
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 2024152069.612.36$10,581
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 2024156084.451.66$13,174
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 2023183071.262.61$13,041
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 202343074.852.64$3,219
Jun 2023175068.962.26$12,068
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 2023174075.112.47$13,069
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 2022168084.888.16$14,260
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 20221790115.097.98$20,601
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 2022172091.054.86$15,661
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 2021175077.435.24$13,550
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 2021177070.783.98$12,528
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 2021176061.302.72$10,789
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 2020164038.772.71$6,358
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 2020185039.982.39$7,396
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020171030.341.86$5,188
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 2019164059.012.30$9,678
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 2019174053.112.30$9,241
Jul 20190056.272.46$0
Jun 2019171052.782.49$9,025
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 2019170056.803.06$9,656
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 2018179046.594.19$8,340
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 2018180059.543.11$10,717
Aug 20180059.403.07$0
Jul 2018177065.142.93$11,530
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 2018183063.842.90$11,683
Mar 20180061.222.79$0
Feb 2018182061.782.77$11,244
Jan 20180062.874.01$0
Dec 2017188057.272.92$10,767
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 2017180047.523.09$8,554
Aug 2017188045.373.00$8,530
Jul 20170043.873.09$0
Jun 2017179042.493.09$7,606
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 2017184046.772.98$8,606
Feb 2017166050.452.95$8,375
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 2016153042.492.64$6,501
Oct 20160046.193.09$0
Sep 2016164041.553.10$6,814
Aug 20160041.442.92$0
Jul 2016164041.622.92$6,826
Jun 20160045.352.69$0
May 2016154042.521.99$6,548
Apr 2016165036.561.99$6,032
Mar 20160033.011.79$0
Feb 2016157026.472.06$4,156
Jan 20160027.352.36$0
Dec 2015144032.362.00$4,660
Nov 2015149038.792.17$5,780
Oct 20150043.552.43$0
Sep 2015170042.992.76$7,308
Aug 20150040.162.87$0
Jul 2015165048.152.95$7,945
Jun 2015167056.152.88$9,377
May 20150055.212.96$0
Apr 2015160049.822.71$7,971
Mar 2015176042.892.93$7,549
Feb 20150044.662.98$0
Jan 2015184043.433.10$7,991
Dec 2014167054.693.59$9,133
Nov 20140070.464.25$0
Oct 2014155078.303.90$12,137
Sep 2014153086.164.05$13,182
Aug 2014152089.394.04$13,587
Jul 20140096.564.18$0
Jun 2014159098.164.74$15,607
May 2014164094.734.73$15,536
Apr 2014163095.944.81$15,638
Mar 2014160095.895.06$15,342
Feb 2014186097.406.19$18,116
Jan 2014169090.404.86$15,278
Dec 2013140091.824.35$12,855
Nov 2013160088.853.74$14,216
Oct 2013166097.423.78$16,172
Sep 20133430104.113.72$35,710
Aug 201300104.253.52$0
Jul 20133150102.523.72$32,294
Jun 2013188094.403.93$17,747
May 2013319094.834.15$30,251
Apr 20130093.964.28$0
Mar 2013374093.623.91$35,014
Feb 2013182091.233.42$16,604
Jan 2013366091.603.42$33,526
Dec 2012188086.773.42$16,313
Nov 2012168086.953.62$14,608
Oct 2012187089.383.40$16,714
Sep 2012353094.672.92$33,419
Aug 2012188092.662.91$17,420
Jul 2012185085.133.02$15,749
Jun 2012179079.822.52$14,288
May 2012367091.612.49$33,621
Apr 20121690101.652.00$17,179
Mar 20123790105.052.22$39,814
Feb 201200101.102.57$0
Jan 2012185098.092.73$18,147
Dec 2011375096.873.24$36,326
Nov 2011370095.723.31$35,416
Oct 2011174084.983.65$14,787
Sep 2011370083.623.99$30,939
Aug 2011183083.404.15$15,262
Jul 2011368094.144.52$34,644
Jun 2011367092.904.64$34,094
May 2011188098.134.40$18,448
Apr 20113730105.964.33$39,523
Mar 2011374096.364.06$36,039
Feb 2011187085.644.18$16,015
Jan 2011187086.504.59$16,176
Dec 2010188085.734.35$16,117
Nov 2010186080.843.80$15,036
Oct 2010184078.103.51$14,370
Sep 2010186072.633.98$13,509
Aug 2010369073.684.42$27,188
Jul 2010181072.554.74$13,132
Jun 2010184070.364.91$12,946
May 2010368071.124.24$26,172
Apr 2010187081.694.12$15,276
Mar 2010187078.394.39$14,659
Feb 2010187073.585.44$13,759
Jan 2010187074.365.96$13,905
Dec 2009168071.445.48$12,002
Nov 2009188074.593.75$14,023
Oct 2009172072.544.11$12,477
Sep 2009186065.543.06$12,190
Aug 2009178067.423.22$12,001
Jul 2009158061.133.46$9,659
Jun 2009182066.163.90$12,041
May 2009124054.743.93$6,788
Apr 20090046.773.59$0
Mar 2009181042.144.06$7,627
Feb 2009183032.814.63$6,004
Jan 2009188035.865.37$6,742
Dec 20080037.105.98$0
Nov 2008174055.496.86$9,655
Oct 2008183075.246.92$13,769
Sep 20081650101.767.88$16,790
Aug 200800114.228.48$0
Jul 20083640131.0811.39$47,713
Jun 200800131.3313.03$0
May 20081840123.1711.57$22,663
Apr 200800110.3110.45$0
Mar 20081640101.909.66$16,712
Feb 2008171092.538.77$15,823
Jan 2008165090.388.21$14,913
Dec 2007161088.337.30$14,221
Nov 2007174091.677.29$15,951
Oct 2007170082.856.92$14,085
Sep 2007184075.846.24$13,955
Aug 2007369069.066.39$25,483
Jul 2007170070.906.39$12,053
Jun 2007159062.007.55$9,858
May 2007168058.747.85$9,868
Apr 2007359059.617.81$21,400
Mar 2007184056.927.30$10,473
Feb 2007323055.108.22$17,797
Jan 2007341050.306.73$17,152
Dec 2006173056.656.92$9,800
Nov 2006356054.207.62$19,295
Oct 2006327054.906.01$17,952
Sep 2006348060.085.04$20,908
Aug 2006179068.717.34$12,299
Jul 2006502069.376.34$34,824
Jun 2006490066.286.38$32,477
May 2006498266.016.42$32,886
Apr 2006506764.397.36$32,633
Mar 200647947456.707.08$30,517
Feb 200633037357.597.75$21,896
Jan 2006571060.598.93$34,597
Dec 2005194054.9413.42$10,658
Nov 2005701054.6910.59$38,338
Oct 2005536058.3413.80$31,270
Sep 2005712061.4512.08$43,752
Aug 2005694061.519.80$42,688
Jul 2005667055.697.84$37,145
Jun 2005675052.337.38$35,323
May 2005881045.226.65$39,839
Apr 2005673249.207.36$33,126
Mar 20058668450.377.15$44,221
Feb 20055197245.226.31$23,924
Jan 2005983143.166.32$42,433
Dec 2004653139.866.75$26,035
Nov 20041,029145.286.33$46,599
Oct 2004875149.706.52$43,494
Sep 2004688143.245.28$29,754
Aug 20041,058142.375.55$44,833
Jul 2004875138.286.08$33,501
Jun 2004890136.106.43$32,135
May 20041,058137.486.49$39,660
Apr 2004884134.475.86$30,477
Mar 2004901134.365.53$30,964
Feb 2004908132.455.51$29,470
Jan 2004724132.036.30$23,196
Dec 2003736130.266.30$22,278
Nov 2003729128.804.60$21,000

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.

Mar 2026 — as filed, then multipliedworked
Oil                  111 bbl  × $ 89.75 =     $9,962
Casinghead gas         0 Mcf  × $  3.15 =         $0

────────────────────────────────────────────────────
Month total                                   $9,962

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. 8A/O/68627 is the state's own key, not one this site invented.