OIL DEVELOPMENT CO. OF TEXAS

Operated by HIGHMARK ENERGY OPERATING, LLC (P-5 385847) in the HANSFORD (MARMATON) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4859District 10Field 38797310Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$987 k
Jan 1993 – May 2026
Value, last 12 filed months
$39 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 34 leases and 70 wells, and the rule below applies to all of them.

Discovered
1958-12-23
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

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

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: GAS 8 X 6 /B/ ALLOWABLE

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
NGPA7none

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
OilDisposition9,686 bbl$538,182
Casinghead gasProduction140,823 Mcf$448,942
Total$987,123

7,066 Mcf of this lease's gas, across 45 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 (4)

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 36.2977, -101.2241. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.3 miles.

36.29948, -101.22436 · 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
100.0%
4 of 4 wells
With a plug date
75.0%
3 of 4 wells
Median depth
6,500 ft
4 wells filed one
Completion to plug
11.5 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
4100.0%
A plug date is filed
375.0%
BothOn the schedule and plugged. Neither fact cancels the other.
375.0%
NeitherNo plug date, and not on the schedule.
00.0%

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 6,450 and 6,570 ft, median 6,500 ft, over the 4 wells that filed a depth.

Completions filed
Aug 1981 – Sep 2010
4 of 4 wells
Plug dates filed
Feb 1991 – Oct 2003
3 of 4 wells; 1 filed none

Last completion to plug: a median of 11.5 years across the 3 wells that filed both dates, with the middle half between 10.3 years and 16.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-1953080966,550 ftSep 2010Yes
42-1953079786,450 ftJan 1982Feb 1991Yes
42-195308007 L6,570 ftNov 1981May 1993Yes
42-1953079856,450 ftAug 1981Oct 2003Yes

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 20260637106.413.05$1,940
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 2026073763.503.75$2,764
Jan 2026078859.138.00$6,302
Dec 202518578356.664.41$13,938
Nov 2025070458.593.93$2,764
Oct 2025076259.383.30$2,518
Sep 2025070262.743.08$2,160
Aug 2025069363.933.01$2,089
Jul 2025070366.743.32$2,331
Jun 2025071366.483.13$2,231
May 202517677260.553.23$13,152
Apr 2025077962.363.54$2,760
Mar 2025080467.704.27$3,432
Feb 2025075470.884.34$3,273
Jan 2025088474.324.28$3,782
Dec 2024084468.993.12$2,634
Nov 202418682569.052.20$14,657
Oct 2024018671.372.28$424
Sep 2024076769.612.36$1,813
Aug 2024078375.632.06$1,616
Jul 2024079379.932.15$1,702
Jun 2024074078.082.63$1,949
May 2024077278.812.20$1,697
Apr 202418291784.451.66$16,891
Mar 2024095580.301.55$1,476
Feb 2024086876.091.78$1,548
Jan 202401,06173.023.30$3,499
Dec 2023093571.262.61$2,441
Nov 2023092677.892.81$2,600
Oct 202318798685.443.09$19,021
Sep 202301,00489.042.74$2,746
Aug 202301,15580.522.67$3,087
Jul 2023078874.852.64$2,082
Jun 2023055468.962.26$1,251
May 2023059270.622.23$1,319
Apr 2023259278.122.24$1,481
Mar 2023063772.852.39$1,524
Feb 2023061675.112.47$1,519
Jan 202303,95476.533.39$13,395
Dec 202217059476.415.73$16,393
Nov 2022075485.005.65$4,257
Oct 2022078287.185.86$4,585
Sep 2022075384.888.16$6,147
Aug 2022076594.529.13$6,982
Jul 20220791101.587.54$5,966
Jun 2022187756115.097.98$27,553
May 20220776109.378.43$6,544
Apr 20220758104.226.84$5,183
Mar 20220729108.885.08$3,701
Feb 2022069091.054.86$3,353
Jan 2022078181.844.54$3,544
Dec 2021076071.323.90$2,963
Nov 202110774077.435.24$12,160
Oct 2021077079.795.71$4,400
Sep 2021061169.865.35$3,269
Aug 2021075066.024.22$3,165
Jul 2021073470.783.98$2,923
Jun 202114473069.493.38$12,474
May 2021076663.483.02$2,312
Apr 2021077560.362.76$2,138
Mar 2021079261.302.72$2,152
Feb 2021072257.805.55$4,006
Jan 202113081050.412.81$8,830
Dec 2020078944.642.68$2,111
Nov 2020077738.772.71$2,103
Oct 2020080836.972.48$2,003
Sep 202018970237.091.99$8,408
Aug 2020079539.982.39$1,896
Jul 2020084638.371.83$1,544
Jun 2020082334.901.69$1,391
May 2020084116.921.81$1,526
Apr 20206941814.751.80$1,772
Mar 2020081030.341.86$1,504
Feb 2020070849.881.98$1,402
Jan 2020081357.252.09$1,703
Dec 2019074059.012.30$1,705
Nov 201919582855.302.75$13,061
Oct 2019091153.472.42$2,203
Sep 2019089255.052.66$2,370
Aug 2019098153.112.30$2,261
Jul 2019092056.272.46$2,263
Jun 2019083852.782.49$2,088
May 201901,07358.482.74$2,940
Apr 201912431762.632.75$8,638
Mar 2019082456.803.06$2,523
Feb 2019081950.852.79$2,287
Jan 201913092746.033.23$8,976
Dec 2018092346.594.19$3,863
Nov 2018090252.934.24$3,822
Oct 2018091961.443.40$3,123
Sep 2018090659.543.11$2,816
Aug 2018094059.403.07$2,883
Jul 201813997965.142.93$11,925
Jun 2018092660.183.08$2,849
May 201801,05965.382.90$3,072
Apr 201801,11163.842.90$3,223
Mar 20181491,20261.222.79$12,472
Feb 2018039461.782.77$1,090
Jan 2018046762.874.01$1,872
Dec 2017052157.272.92$1,522
Nov 2017055655.423.12$1,734
Oct 2017062749.292.98$1,871
Sep 2017068547.523.09$2,115
Aug 2017092445.373.00$2,776
Jul 2017099643.873.09$3,075
Jun 201711798242.493.09$8,003
May 2017461,06845.373.26$5,572
Apr 201701,03647.933.21$3,327
Mar 201701,19946.772.98$3,577
Feb 2017086750.452.95$2,560
Jan 2017037749.413.42$1,289
Dec 2016097648.763.72$3,633
Nov 201617994542.492.64$10,105
Oct 2016093946.193.09$2,902
Sep 2016090241.553.10$2,797
Aug 2016098441.442.92$2,878
Jul 2016099441.622.92$2,907
Jun 20168698945.352.69$6,556
May 201601,02142.521.99$2,033
Apr 2016096236.561.99$1,915
Mar 201601,00133.011.79$1,796
Feb 201614392526.472.06$5,694
Jan 201601,00927.352.36$2,386
Dec 201501,03332.362.00$2,067
Nov 2015099638.792.17$2,159
Oct 201501,03843.552.43$2,519
Sep 201501,02342.992.76$2,822
Aug 20151311,06640.162.87$8,323
Jul 20151201,06948.152.95$8,926
Jun 201501,06256.152.88$3,062
May 201501,13055.212.96$3,340
Apr 20151431,05849.822.71$9,988
Mar 201501,13042.892.93$3,316
Feb 201501,03544.662.98$3,080
Jan 201501,14643.433.10$3,553
Dec 201401,12154.693.59$4,026
Nov 2014941,07470.464.25$11,190
Oct 201401,12078.303.90$4,369
Sep 201401,08686.164.05$4,393
Aug 20141011,13789.394.04$13,616
Jul 20141201,12896.564.18$16,302
Jun 201401,15298.164.74$5,457
May 201401,19494.734.73$5,644
Apr 20141661,46195.944.81$22,952
Mar 2014078595.895.06$3,970
Feb 2014045197.406.19$2,793
Jan 2014053590.404.86$2,600
Dec 2013059991.824.35$2,608
Nov 2013050988.853.74$1,903
Oct 201301,16997.423.78$4,418
Sep 20131901,345104.113.72$24,781
Aug 2013071104.253.52$250
Jul 20130175102.523.72$651
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 2012191086.773.42$16,573
Nov 20120086.953.62$0
Oct 2012192089.383.40$17,161
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 20121910101.102.57$19,310
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 2011178095.723.31$17,038
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 2011181094.144.52$17,039
Jun 20110092.904.64$0
May 2011194098.134.40$19,037
Apr 201100105.964.33$0
Mar 2011194096.364.06$18,694
Feb 20110085.644.18$0
Jan 2011196086.504.59$16,954
Dec 201094085.734.35$8,059
Nov 2010456080.843.80$36,863
Oct 20100078.103.51$0
Sep 2010238072.633.98$17,286
Aug 20100073.684.42$0
Jul 201022072.554.74$1,596
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
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 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 200582949.207.36$4,101
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
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 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 20000031.875.19$0
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 19980611.742.24$13
Jun 19980311.242.24$7
May 1998172012.622.21$2,171
Apr 19980013.042.51$0
Mar 199805812.802.31$134
Feb 199816811913.952.30$2,617
Jan 1998012514.702.15$269
Dec 199707216.322.41$174
Nov 1997017218.193.09$531
Oct 1997016619.253.15$523
Sep 199715316517.742.95$3,202
Aug 1997016817.862.55$429
Jul 1997502117.582.25$926
Jun 19971909517.242.26$3,490
May 1997019318.972.31$446
Apr 1997020817.882.08$433
Mar 1997016918.951.94$328
Feb 199716615620.492.21$3,745
Jan 1997018723.483.54$662
Dec 1996018223.32$0
Nov 199607721.97$0
Oct 1996018623.31$0
Sep 199618521322.22$4,111
Aug 1996021820.26$0
Jul 1996014819.55$0
Jun 1996014818.73$0
May 1996131019.43$2,545
Apr 19960521.51$0
Mar 19960019.38$0
Feb 19960016.98$0
Jan 1996333117.07$5,684
Dec 1995015817.19$0
Nov 1995019316.00$0
Oct 1995020615.43$0
Sep 199535319916.18$5,712
Aug 1995021215.92$0
Jul 1995020115.24$0
Jun 199507316.41$0
May 1995020417.56$0
Apr 1995019617.73$0
Mar 1995019116.44$0
Feb 1995019116.58$0
Jan 1995028115.92$0
Dec 199418123615.03$2,720
Nov 1994028615.90$0
Oct 1994014515.58$0
Sep 199418218515.29$2,783
Aug 1994013816.13$0
Jul 199409517.56$0
Jun 199408917.09$0
May 199417616515.88$2,795
Apr 1994017314.14$0
Mar 1994018212.46$0
Feb 1994013012.50$0
Jan 199408412.66$0
Dec 199307912.33$0
Nov 199318412814.49$2,666
Oct 1993013815.85$0
Sep 1993010715.03$0
Aug 1993011115.66$0
Jul 19933484815.46$5,380
Jun 199304416.79$0
May 19931820017.68$318
Apr 1993019618.05$0
Mar 1993020218.14$0
Feb 1993019217.90$0
Jan 1993023016.93$0

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                    0 bbl  × $106.41 =         $0
Casinghead gas       637 Mcf  × $  3.05 =     $1,940

────────────────────────────────────────────────────
Month total                                   $1,940

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. 10/O/4859 is the state's own key, not one this site invented.