LAMBERT , M. F.

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the TOM O'CONNOR (4150) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 6256District 02Field 90534312NGPA filingOilCasinghead gasSaveExport
Value, all time
$8.5 M
Jan 1993 – Aug 2021
Value, last 12 filed months
$6 k
at the published price for each month
Months reported
344
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 16 leases and 121 wells, and the rule below applies to all of them.

Discovered
1977-06-24
as the register files it
Field class
Oil and gas
the register's own label
Between wells
300 ft
minimum
From a lease line
150 ft
minimum

A drilling unit in this field needs at least 10 acres. The field rule took effect on 2005-05-10.

The Commission's schedule remark for this field reads: AND FIELD CLASSIFIED AS SALVAGE.

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
OilDisposition193,005 bbl$7,856,605
Casinghead gasProduction157,296 Mcf$630,089
Total$8,486,694

16,341 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 (10)

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 28.3542, -97.1706. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.8 miles.

28.35453, -97.17185 · 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
70.0%
7 of 10 wells
With a plug date
70.0%
7 of 10 wells
Median depth
5,262 ft
10 wells filed one
Completion to plug
6.6 years
median over 7 wells

What the state filed about each well

On the RRC proration schedule
770.0%
A plug date is filed
770.0%
BothOn the schedule and plugged. Neither fact cancels the other.
770.0%
NeitherNo plug date, and not on the schedule.
330.0%

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

Total depth in feet, 10 of 10 wells. Median 5,262 ft, with the middle half between 4,612 and 5,920 ft; the shallowest is 4,600 ft and the deepest 6,012 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, 10 of 10 wells, Dec 1981 – Mar 2021. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Dec 1981 – Mar 2021
10 of 10 wells
Plug dates filed
Mar 1988 – Sep 1997
7 of 10 wells; 3 filed none

Last completion to plug: a median of 6.6 years across the 7 wells that filed both dates, with the middle half between 6.2 years and 11.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-391305351066,001 ftMar 2021
42-391316791304,612 ftApr 2020
42-391316941314,630 ftJan 1984Jul 1990Yes
42-391316781294,613 ftDec 1983Jul 1990Yes
42-391316491286,012 ftJul 1983May 1992Yes
42-391316511264,612 ftJul 1983Mar 1988Yes
42-39101407365,913 ftMar 1983Sep 1997Yes
42-39101184295,893 ftMay 1982Mar 1988Yes
42-391312641114,600 ftMar 1982
42-39101227245,922 ftDec 1981Sep 1997Yes

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 (344)

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

344 months

Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 2021107057.805.55$6,185
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 202091014.751.80$1,342
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20191484656.272.46$8,441
Jun 2019691052.782.49$3,667
May 20190058.482.74$0
Apr 20191526062.632.75$9,685
Mar 201913011756.803.06$7,742
Feb 2019461550.852.79$2,381
Jan 201921421646.033.23$10,548
Dec 201815421646.594.19$8,079
Nov 20183075352.934.24$16,474
Oct 201817410261.443.40$11,037
Sep 20181181459.543.11$7,069
Aug 20180059.403.07$0
Jul 20186516865.142.93$4,727
Jun 20186514660.183.08$4,361
May 201812631765.382.90$9,157
Apr 20182079163.842.90$13,479
Mar 20183813961.222.79$2,714
Feb 2018673461.782.77$4,233
Jan 20181354862.874.01$8,680
Dec 201720910357.272.92$12,270
Nov 201717510355.423.12$10,020
Oct 201725510849.292.98$12,891
Sep 201701847.523.09$56
Aug 20171537145.373.00$7,155
Jul 201730412143.873.09$13,710
Jun 201715311442.493.09$6,853
May 20173056345.373.26$14,043
Apr 201725412647.933.21$12,579
Mar 201723543046.772.98$12,274
Feb 201727053050.452.95$15,186
Jan 201724643549.413.42$13,642
Dec 201614843048.763.72$8,817
Nov 201618247742.492.64$8,995
Oct 201616838246.193.09$8,940
Sep 201624867041.553.10$12,382
Aug 201625635241.442.92$11,638
Jul 201619535441.622.92$9,151
Jun 201628522645.352.69$13,532
May 201615130942.521.99$7,036
Apr 201621229336.561.99$8,334
Mar 201617752333.011.79$6,781
Feb 201622672126.472.06$7,470
Jan 201633540527.352.36$10,120
Dec 201530334032.362.00$10,486
Nov 201527334138.792.17$11,329
Oct 201528734143.552.43$13,326
Sep 201522234142.992.76$10,484
Aug 201525234140.162.87$11,100
Jul 201531018648.152.95$15,474
Jun 201530033056.152.88$17,796
May 201531058455.212.96$18,841
Apr 201524075549.822.71$14,000
Mar 201531076642.892.93$15,544
Feb 201533674644.662.98$17,226
Jan 201534183043.433.10$17,383
Dec 201434173054.693.59$21,271
Nov 201427077870.464.25$22,332
Oct 201434180978.303.90$29,856
Sep 201436076786.164.05$34,120
Aug 201443475589.394.04$41,842
Jul 201443477396.564.18$45,138
Jun 201448072598.164.74$50,551
May 201432768594.734.73$34,214
Apr 201448061095.944.81$48,985
Mar 201446553295.895.06$47,279
Feb 201442057797.406.19$44,481
Jan 201443473590.404.86$42,806
Dec 201349667091.824.35$48,460
Nov 201354065388.853.74$50,420
Oct 201349656397.423.78$50,448
Sep 2013450530104.113.72$48,820
Aug 2013434582104.253.52$47,295
Jul 2013496641102.523.72$53,233
Jun 201360058094.403.93$58,921
May 201358952294.834.15$58,021
Apr 201339054093.964.28$38,957
Mar 201349650193.623.91$48,396
Feb 201342044991.233.42$39,852
Jan 201352743391.603.42$49,754
Dec 201246555386.773.42$42,239
Nov 201245052486.953.62$41,027
Oct 201246552189.383.40$43,333
Sep 201266051194.672.92$63,974
Aug 201262047992.662.91$58,842
Jul 201262053285.133.02$54,388
Jun 201257053779.822.52$46,850
May 20125854591.612.49$6,670
Apr 2012510581101.652.00$53,002
Mar 2012527587105.052.22$56,666
Feb 2012435575101.102.57$45,456
Jan 201258961698.092.73$59,459
Dec 201119658696.873.24$20,885
Nov 201148054295.723.31$47,740
Oct 20116401,29484.983.65$59,108
Sep 201160044683.623.99$51,950
Aug 201177532983.404.15$66,000
Jul 201177527994.144.52$74,219
Jun 201172030292.904.64$68,289
May 201177525098.134.40$77,152
Apr 2011477200105.964.33$51,410
Mar 201137214896.364.06$36,446
Feb 201136412785.644.18$31,704
Jan 201137212586.504.59$32,752
Dec 2010372085.734.35$31,892
Nov 2010390080.843.80$31,528
Oct 201040312478.103.51$31,909
Sep 201036010872.633.98$26,577
Aug 201040311373.684.42$30,192
Jul 201031012572.554.74$23,083
Jun 201024011570.364.91$17,451
May 201018612571.124.24$13,758
Apr 201024019081.694.12$20,389
Mar 201027919378.394.39$22,718
Feb 201028018473.585.44$21,604
Jan 201034116274.365.96$26,323
Dec 200946519371.445.48$34,278
Nov 200936019074.593.75$27,565
Oct 200937219372.544.11$27,778
Sep 200955827865.543.06$37,423
Aug 200953224167.423.22$36,643
Jul 200964872361.133.46$42,117
Jun 200981084066.163.90$56,861
May 200977591754.743.93$46,023
Apr 200972071046.773.59$36,222
Mar 200971358642.144.06$32,424
Feb 200961656832.814.63$22,843
Jan 200974458635.865.37$29,827
Dec 200871345537.105.98$29,172
Nov 200866048055.496.86$39,916
Oct 200868258675.246.92$55,370
Sep 2008644340101.767.88$68,212
Aug 2008837948114.228.48$103,644
Jul 2008324407131.0811.39$47,105
Jun 2008330320131.3313.03$47,509
May 2008517513123.1711.57$69,617
Apr 2008720650110.3110.45$86,219
Mar 2008589517101.909.66$65,015
Feb 200849360392.538.77$50,906
Jan 20086201,01790.388.21$64,381
Dec 20075581,11788.337.30$57,444
Nov 20075401,01091.677.29$56,866
Oct 200758978682.856.92$54,239
Sep 20077088675.846.24$10,841
Aug 200762068669.066.39$47,199
Jul 200746565570.906.39$37,153
Jun 200757070062.007.55$40,624
May 200758978658.747.85$40,765
Apr 200763078059.617.81$43,642
Mar 200752765556.927.30$34,780
Feb 200764466855.108.22$40,973
Jan 200765168650.306.73$37,360
Dec 200668264856.656.92$43,118
Nov 200663054054.207.62$38,259
Oct 200668264854.906.01$41,339
Sep 200663061060.085.04$40,923
Aug 200679148168.717.34$57,880
Jul 200670254569.376.34$52,155
Jun 200675054066.286.38$53,157
May 200677561766.016.42$55,122
Apr 200678051064.397.36$53,978
Mar 200671361756.707.08$44,797
Feb 200670049657.597.75$44,158
Jan 200668251760.598.93$45,941
Dec 200568251754.9413.42$44,405
Nov 200566061054.6910.59$42,554
Oct 200568264858.3413.80$48,728
Sep 200551061061.4512.08$38,708
Aug 200552757961.519.80$38,088
Jul 200558954855.697.84$37,100
Jun 200569070052.337.38$41,274
May 200574461045.226.65$37,701
Apr 200569060049.207.36$38,364
Mar 200571361050.377.15$40,278
Feb 200564450845.226.31$32,328
Jan 200580650343.166.32$37,967
Dec 200468264139.866.75$31,512
Nov 200466043045.286.33$32,607
Oct 200468261049.706.52$37,870
Sep 200463063043.245.28$30,570
Aug 200477557942.375.55$36,051
Jul 200474457938.286.08$32,003
Jun 200460050036.106.43$24,877
May 200471349937.486.49$29,964
Apr 200457049434.475.86$22,542
Mar 200458958034.365.53$23,446
Feb 200458060332.455.51$22,143
Jan 200458957932.036.30$22,513
Dec 200362077930.266.30$23,670
Nov 200372064028.804.60$23,677
Oct 200366170928.174.76$21,995
Sep 200372054026.314.75$21,508
Aug 200362064829.765.13$21,775
Jul 200365553029.415.17$22,004
Jun 200370856828.565.98$23,619
May 200380654826.595.97$24,705
Apr 200366051026.675.41$20,360
Mar 200371361031.146.10$25,921
Feb 200372843633.487.93$27,829
Jan 200380644830.315.58$26,931
Dec 200271354826.914.85$21,847
Nov 200275057024.664.14$20,853
Oct 200286857926.464.23$25,416
Sep 200287047027.443.64$25,581
Aug 200286851025.963.16$24,147
Jul 200293050924.583.06$24,418
Jun 200275050023.733.34$19,467
May 200277551024.663.58$20,939
Apr 200287053023.653.51$22,437
Mar 200283748522.003.10$19,919
Feb 200264445018.222.38$12,803
Jan 200274451017.172.38$13,986
Dec 200171353616.932.36$13,338
Nov 200175024318.072.41$14,137
Oct 200171327319.782.53$14,794
Sep 200175030924.262.25$18,891
Aug 200165129324.873.05$17,085
Jul 200171328523.933.20$17,973
Jun 200178032024.563.82$20,381
May 200177562925.524.31$22,487
Apr 200181027824.685.34$21,474
Mar 200180632824.545.38$21,543
Feb 200172819227.755.77$21,309
Jan 200174420327.478.40$22,143
Dec 200083738226.889.12$25,983
Nov 200075052232.215.66$27,111
Oct 200077575731.235.15$28,098
Sep 200069092431.875.19$26,783
Aug 200071324729.644.54$22,255
Jul 200074415728.534.09$21,868
Jun 200053857729.304.40$18,301
May 20006822,32327.263.68$27,139
Apr 20008101,84524.513.12$25,602
Mar 200074431928.422.86$22,057
Feb 200050847827.622.73$15,334
Jan 200086823625.272.48$22,520
Dec 199977514124.282.42$19,159
Nov 199981059423.192.43$20,230
Oct 19997752,00220.982.80$21,873
Sep 199975083021.752.62$18,486
Aug 199960028619.262.88$12,378
Jul 199968231717.892.37$12,953
Jun 199958235515.942.36$10,116
May 19997751,42115.792.32$15,535
Apr 19997502,16915.102.21$16,114
Mar 19997752,82212.471.84$14,852
Feb 19993591,1399.981.82$5,653
Jan 19997751,93610.381.90$11,723
Dec 19988061,6079.201.77$10,265
Nov 19989302,62010.892.19$15,854
Oct 199868525212.421.97$9,004
Sep 199890029912.592.08$11,954
Aug 199864386011.301.91$8,906
Jul 199858979911.742.24$8,702
Jun 19988402,39311.242.24$14,795
May 19988372,32112.622.21$15,684
Apr 199878951713.042.51$11,584
Mar 199887260212.802.31$12,552
Feb 199872846913.952.30$11,234
Jan 199891411814.702.15$13,690
Dec 199765520216.322.41$11,177
Nov 199755310418.193.09$10,380
Oct 19977058119.253.15$13,826
Sep 199769210717.742.95$12,592
Aug 199761589817.862.55$13,278
Jul 199765513617.582.25$11,820
Jun 199768717617.242.26$12,241
May 199777515218.972.31$15,053
Apr 199781022217.882.08$14,945
Mar 199765125418.951.94$12,829
Feb 199758818320.492.21$12,452
Jan 199771314123.483.54$17,240
Dec 199660620723.32$14,132
Nov 199666016721.97$14,500
Oct 199665115223.31$15,175
Sep 19961,02016322.22$22,664
Aug 199681326020.26$16,471
Jul 19961,08526119.55$21,212
Jun 199684013218.73$15,733
May 19961,39520619.43$27,105
Apr 199690017921.51$19,359
Mar 19961,08514819.38$21,027
Feb 19961,16015916.98$19,697
Jan 19961,02829217.07$17,548
Dec 19951,05326417.19$18,101
Nov 199599015816.00$15,840
Oct 19951,11624315.43$17,220
Sep 19951,26024416.18$20,387
Aug 19951,17828615.92$18,754
Jul 199578320315.24$11,933
Jun 19951,02020516.41$16,738
May 199579918917.56$14,030
Apr 19958108617.73$14,361
Mar 199580611616.44$13,251
Feb 199583427216.58$13,828
Jan 199594853315.92$15,092
Dec 199491828415.03$13,798
Nov 199487025415.90$13,833
Oct 199489948015.58$14,006
Sep 199487031815.29$13,302
Aug 199489953516.13$14,501
Jul 199489943517.56$15,786
Jun 199487052917.09$14,868
May 19941,24049015.88$19,691
Apr 19941,11035014.14$15,695
Mar 19941,24073812.46$15,450
Feb 19941,03645212.50$12,950
Jan 199486829912.66$10,989
Dec 19931,11636412.33$13,760
Nov 19931,0501,14314.49$15,215
Oct 19931,14740615.85$18,180
Sep 19931,14031615.03$17,134
Aug 19939921,10215.66$15,535
Jul 19931,30229515.46$20,129
Jun 19931,17048016.79$19,644
May 19931,15733917.68$20,456
Apr 19931,17019918.05$21,119
Mar 19931,20915918.14$21,931
Feb 19931,09244317.90$19,547
Jan 199399280616.93$16,795

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.

Feb 2021 — as filed, then multipliedworked
Oil                  107 bbl  × $ 57.80 =     $6,185
Casinghead gas         0 Mcf  × $  5.55 =         $0

────────────────────────────────────────────────────
Month total                                   $6,185

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. 02/O/6256 is the state's own key, not one this site invented.