LAMBERT, M. F.

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

Oil lease lease 1527District 02Field 90534001OilCasinghead gasSaveExport
Value, all time
$8.9 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 98 leases and 672 wells, and the rule below applies to all of them.

Discovered
1934-12-31
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.

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
OilDisposition278,128 bbl$7,909,324
Casinghead gasProduction330,061 Mcf$997,172
Total$8,906,496

76,029 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 (50)

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 28.3435, -97.1838. A lease has no coordinate of its own — that point is the mean of its wells, and they span 3.6 miles.

28.34634, -97.18811 · 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
98.0%
49 of 50 wells
With a plug date
46.0%
23 of 50 wells
Median depth
5,916 ft
38 wells filed one
Completion to plug
13.5 years
median over 16 wells

What the state filed about each well

On the RRC proration schedule
4998.0%
A plug date is filed
2346.0%
BothOn the schedule and plugged. Neither fact cancels the other.
2346.0%
NeitherNo plug date, and not on the schedule.
12.0%

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, 38 of 50 wells. Median 5,916 ft, with the middle half between 5,905 and 5,931 ft; the shallowest is 4,446 ft and the deepest 6,413 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, 31 of 50 wells, Oct 1966 – Oct 2023. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1966 – Oct 2023
31 of 50 wells; 19 filed none
Plug dates filed
Sep 1986 – Jun 2023
23 of 50 wells; 27 filed none

Last completion to plug: a median of 13.5 years across the 16 wells that filed both dates, with the middle half between 7.4 years and 15.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

50 wells

42-39101190855,938 ftJul 1992Yes
42-39101223205,866 ftMay 1992Yes
42-3910122421Yes
42-3910122522Yes
42-39101226235,858 ftMay 1992Yes
42-3910122882Yes
42-3910131469Yes
42-39101315715,912 ftSep 1986Yes
42-3910131672Yes
42-3910131773Yes
42-3910132179Yes
42-3910133657Yes
42-3910133970Yes
42-3910136876Yes
42-39101369785,800 ftApr 2021Yes
42-39101410425,900 ftSep 2012Yes
42-3910141758Yes
42-3910141880Yes
42-3910144846 L5,903 ftJul 1998Yes
42-3910136443 U5,908 ftOct 2023Yes
42-39101367685,936 ftMay 2023Yes
42-391317681326,012 ftJan 2015Yes
42-39101185325,895 ftNov 2010Jun 2023Yes
42-39101370845,931 ftMar 2009Yes
42-39101310645,937 ftJul 2005Yes
42-39101363415,897 ftJun 1995Jul 1998Yes
42-39101123865,930 ftOct 1994Mar 2002Yes
42-391305361056,052 ftApr 1994Yes
42-39101409405,918 ftJul 1993Yes
42-39101332495,911 ftSep 1992Dec 1997Yes
42-39101192186,413 ftApr 1991Jul 1998Yes
42-39101335555,931 ftMay 1990Yes
42-39101312665,947 ftAug 1989May 2009Yes
42-3910141554 U5,918 ftFeb 1989Yes
42-3910133351 L5,915 ftAug 1988Yes
42-3910136545 U5,905 ftAug 1987Yes
42-3910141656 L5,930 ftApr 1987Yes
42-39101411445,917 ftMay 1986Jun 1989Yes
42-3910140635 L5,905 ftJan 1985Jun 1998Yes
42-39101313675,920 ftMar 1983Sep 2001Yes
42-3910140838D5,926 ftMar 1980Nov 1999Yes
42-3910136239 L5,912 ftJan 1980Yes
42-39101455345,912 ftMar 1978May 1992Yes
42-39101319755,910 ftApr 1977May 1989Yes
42-39103944984,446 ftJan 1977Jun 1992Yes
42-39101320775,911 ftNov 1975May 1989Yes
42-39101186835,922 ftMay 1975Yes
42-39101311655,922 ftDec 1974May 1989Yes
42-3910141248 L5,903 ftJun 1972Feb 1988Yes
42-39101124915,935 ftOct 1966

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 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
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 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
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 20210057.805.55$0
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 202081014.751.80$1,195
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 20190056.272.46$0
Jun 20190052.782.49$0
May 20191065958.482.74$6,361
Apr 2019802262.632.75$5,071
Mar 201914056.803.06$795
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 2018448465.142.93$3,112
Jun 2018436760.183.08$2,794
May 20188515865.382.90$6,016
Apr 20181594863.842.90$10,290
Mar 2018296861.222.79$1,965
Feb 2018421061.782.77$2,622
Jan 2018911562.874.01$5,781
Dec 20171492257.272.92$8,598
Nov 201797555.423.12$5,391
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 2015612755.212.96$707
Apr 201565649.822.71$450
Mar 20156542.892.93$272
Feb 2015621444.662.98$905
Jan 2015614743.433.10$716
Dec 2014614254.693.59$838
Nov 2014660470.464.25$2,991
Oct 2014644878.303.90$2,217
Sep 2014615786.164.05$1,152
Aug 2014615189.394.04$1,146
Jul 2014622696.564.18$1,524
Jun 2014627698.164.74$1,896
May 2014645994.734.73$2,738
Apr 2014611195.944.81$1,109
Mar 201462995.895.06$722
Feb 2014614997.406.19$1,507
Jan 201468990.404.86$975
Dec 2013620191.824.35$1,426
Nov 201368588.853.74$851
Oct 2013655497.423.78$2,678
Sep 20136249104.113.72$1,550
Aug 2013663104.253.52$847
Jul 2013631102.523.72$730
Jun 201368894.403.93$913
May 201361,32494.834.15$6,062
Apr 2013628693.964.28$1,789
Mar 2013664293.623.91$3,074
Feb 2013617291.233.42$1,136
Jan 2013646891.603.42$2,150
Dec 2012655486.773.42$2,415
Nov 2012648186.953.62$2,265
Oct 2012601,52389.383.40$10,541
Sep 20121803,43094.672.92$27,051
Aug 20121863,57492.662.91$27,629
Jul 20121863,58185.133.02$26,652
Jun 20121803,24779.822.52$22,547
May 2012661,76291.612.49$10,431
Apr 2012701,159101.652.00$9,430
Mar 20122791,230105.052.22$32,042
Feb 20122611,122101.102.57$29,271
Jan 2012963198.092.73$2,608
Dec 2011791,47396.873.24$12,425
Nov 20112701,26695.723.31$30,036
Oct 201117975284.983.65$17,955
Sep 201117025983.623.99$15,248
Aug 201117913183.404.15$15,472
Jul 201111036694.144.52$12,009
Jun 201110077092.904.64$12,863
May 201134865398.134.40$37,026
Apr 2011360948105.964.33$42,254
Mar 201134148796.364.06$34,835
Feb 201114026685.644.18$13,101
Jan 201127924986.504.59$25,276
Dec 201027946985.734.35$25,958
Nov 201027042880.843.80$23,451
Oct 201023928678.103.51$19,669
Sep 20101021172.633.98$1,566
Aug 201026929373.684.42$21,115
Jul 201027931172.554.74$21,715
Jun 201027040370.364.91$20,976
May 20102795171.124.24$20,058
Apr 201033030081.694.12$28,195
Mar 201029461078.394.39$25,724
Feb 20102801,08073.585.44$26,480
Jan 20102521,18074.365.96$25,776
Dec 20091411,41071.445.48$17,805
Nov 20093301,50074.593.75$30,242
Oct 20094961,51072.544.11$42,186
Sep 20094801,30065.543.06$35,443
Aug 20094961,11067.423.22$37,013
Jul 200952061061.133.46$33,901
Jun 200930071466.163.90$22,629
May 200965181054.743.93$38,816
Apr 200942072846.773.59$22,255
Mar 200952741042.144.06$23,872
Feb 200956058032.814.63$21,061
Jan 20091931,29035.865.37$13,850
Dec 200839686537.105.98$19,862
Nov 200821065055.496.86$16,112
Oct 200852741075.246.92$42,489
Sep 2008300375101.767.88$33,482
Aug 2008200572114.228.48$27,696
Jul 2008775710131.0811.39$109,674
Jun 2008360330131.3313.03$51,580
May 2008506660123.1711.57$69,963
Apr 2008210750110.3110.45$31,006
Mar 2008806558101.909.66$87,524
Feb 200875452292.538.77$74,346
Jan 200878057090.388.21$75,174
Dec 200752777588.337.30$52,209
Nov 200751060091.677.29$51,127
Oct 200758946582.856.92$52,017
Sep 20071961,73575.846.24$25,698
Aug 20075891,15869.066.39$48,074
Jul 20075891,05870.906.39$48,519
Jun 20073601,50062.007.55$33,643
May 20075581,65858.747.85$45,786
Apr 200724094059.617.81$21,643
Mar 20075581,05856.927.30$39,487
Feb 200764096055.108.22$43,151
Jan 20079281,08050.306.73$53,943
Dec 20069601,10056.656.92$61,994
Nov 200675060054.207.62$45,220
Oct 20061,0201,20054.906.01$63,215
Sep 200693060060.085.04$58,897
Aug 200686162068.717.34$63,710
Jul 200693062069.376.34$68,447
Jun 200690060066.286.38$63,482
May 200696162066.016.42$67,419
Apr 200692858064.397.36$64,023
Mar 200692855156.707.08$56,520
Feb 20068681,13257.597.75$58,762
Jan 20068061,12060.598.93$58,841
Dec 200586898954.9413.42$60,956
Nov 200587090054.6910.59$57,110
Oct 200580658958.3413.80$55,148
Sep 200575070061.4512.08$54,543
Aug 200580662061.519.80$55,651
Jul 200580682055.697.84$51,318
Jun 20058101,00052.337.38$49,768
May 20051,02362045.226.65$50,384
Apr 200593051049.207.36$49,510
Mar 200589962050.377.15$49,719
Feb 200518456045.226.31$11,855
Jan 200587060043.166.32$41,343
Dec 200483777539.866.75$38,595
Nov 20044090045.286.33$7,509
Oct 200473090049.706.52$42,145
Sep 200444060043.245.28$22,196
Aug 200483765142.375.55$39,077
Jul 200486165138.286.08$36,920
Jun 200475080036.106.43$32,221
May 200477554137.486.49$32,561
Apr 20041,02045734.475.86$37,837
Mar 20041,05757634.365.53$39,504
Feb 200495749332.455.51$33,771
Jan 20041,17855832.036.30$41,247
Dec 20031,02362030.266.30$34,863
Nov 200364060028.804.60$21,189
Oct 200396252028.174.76$29,575
Sep 20031,17060026.314.75$33,632
Aug 20031,30262029.765.13$41,928
Jul 20031,11882029.415.17$37,120
Jun 20031,26069028.565.98$40,114
May 20031,33362026.595.97$39,148
Apr 20031,35060026.675.41$39,249
Mar 20031,42686831.146.10$49,697
Feb 20031,34470033.487.93$50,545
Jan 20031,48862030.315.58$48,562
Dec 20021,5191,24026.914.85$46,895
Nov 20021,4701,20024.664.14$41,215
Oct 20021,5191,24026.464.23$45,437
Sep 20023301,20027.443.64$13,417
Aug 20021,0001,42625.963.16$30,472
Jul 20021,3951,24024.583.06$38,086
Jun 20021,2001,41023.733.34$33,183
May 20021,5501,55024.663.58$43,778
Apr 20021,4701,53023.653.51$40,139
Mar 20021,5501,73622.003.10$39,486
Feb 20021,2881,59618.222.38$27,259
Jan 20021,6121,73617.172.38$31,802
Dec 20011,5501,61216.932.36$30,053
Nov 20011,53049618.072.41$28,840
Oct 20011,51958219.782.53$31,518
Sep 20011,50061824.262.25$37,781
Aug 20011,64374124.873.05$43,124
Jul 20011,55062023.933.20$39,074
Jun 20011,50061524.563.82$39,192
May 20011,7051,38425.524.31$49,473
Apr 20011,53052624.685.34$40,567
Mar 20011,58164424.545.38$42,260
Feb 20011,40036927.755.77$40,978
Jan 20011,67445727.478.40$49,823
Dec 20001,64374926.889.12$50,997
Nov 20001,9801,37932.215.66$71,578
Oct 20002,1082,05831.235.15$76,422
Sep 20001,7702,36931.875.19$68,697
Aug 20001,89165529.644.54$59,023
Jul 20001,89139928.534.09$55,582
Jun 20001,4411,54729.304.40$49,024
May 20002,0156,86427.263.68$80,187
Apr 20001,9504,44224.513.12$61,636
Mar 20002,23295828.422.86$66,173
Feb 20001,5241,43527.622.73$46,005
Jan 20002,04655725.272.48$53,084
Dec 19991,92235024.282.42$47,514
Nov 19992,0101,47323.192.43$50,197
Oct 19992,5116,48620.982.80$70,866
Sep 19992,3402,59121.752.62$57,680
Aug 19992,2801,08819.262.88$47,041
Jul 19992,3561,09517.892.37$44,747
Jun 19992,0161,22915.942.36$35,038
May 19992,1703,97715.792.32$43,495
Apr 19992,1606,24815.102.21$46,412
Mar 19992,3568,57912.471.84$45,150
Feb 19997442,3609.981.82$11,715
Jan 19992,2015,49710.381.90$33,290
Dec 19982,3564,6979.201.77$30,004
Nov 19981,8605,24010.892.19$31,709
Oct 19981,49755012.421.97$19,676
Sep 19982,16071712.592.08$28,688
Aug 19981,3531,81011.301.91$18,741
Jul 19981,9222,60911.742.24$28,401
Jun 19982,1906,23811.242.24$38,572
May 19981,8305,07512.622.21$34,292
Apr 19981,9991,31213.042.51$29,354
Mar 19982,0821,43612.802.31$29,966
Feb 19982,0441,31813.952.30$31,544
Jan 19982,0113,80314.702.15$37,756
Dec 19972,0466,74016.322.41$49,642
Nov 19971,3002,10818.193.09$30,157
Oct 19971,6291,61319.253.15$36,439
Sep 19971,5981,33317.742.95$32,287
Aug 19971,4661,14317.862.55$29,103
Jul 19971,6391,60417.582.25$32,418
Jun 19971,71881017.242.26$31,447
May 19972,79096018.972.31$55,142
Apr 19971,6801,42517.882.08$33,006
Mar 19971,73681918.951.94$34,485
Feb 19972,12856120.492.21$44,840
Jan 19972,34772923.483.54$57,688
Dec 19962,55774623.32$59,629
Nov 19962,22090921.97$48,773
Oct 19962,41827323.31$56,364
Sep 19962,25077422.22$49,995
Aug 19961,6271,15420.26$32,963
Jul 19962,10895719.55$41,211
Jun 19962,16089018.73$40,457
May 19961,27149619.43$24,696
Apr 19961,23066821.51$26,457
Mar 19961,27155719.38$24,632
Feb 19961,18961116.98$20,189
Jan 19961,2711,06217.07$21,696
Dec 19951,2711,36017.19$21,848
Nov 19951,2001,63916.00$19,200
Oct 19951,27178315.43$19,612
Sep 19951,35093216.18$21,843
Aug 19951,58153015.92$25,170
Jul 19951,0181,26915.24$15,514
Jun 19951,80076916.41$29,538
May 19951,59864617.56$28,061
Apr 19951,35950817.73$24,095
Mar 19951,73692016.44$28,540
Feb 199597670216.58$16,182
Jan 19951,0831,65815.92$17,241
Dec 19941,2542,62015.03$18,848
Nov 19941,8301,37115.90$29,097
Oct 19941,9221,12115.58$29,945
Sep 19942,0391,93615.29$31,176
Aug 19942,2701,52616.13$36,615
Jul 19941,6541,05217.56$29,044
Jun 19941,9471,76517.09$33,274
May 19941,7981,66215.88$28,552
Apr 19941,7401,73614.14$24,604
Mar 19941,7981,96612.46$22,403
Feb 19941,6241,92612.50$20,300
Jan 19941,7982,74312.66$22,763
Dec 19931,7982,43412.33$22,169
Nov 19931,5582,51214.49$22,575
Oct 19931,1281,95615.85$17,879
Sep 19931,24751415.03$18,742
Aug 19931,2901,44715.66$20,201
Jul 19931,6531,65715.46$25,555
Jun 19932,1531,67716.79$36,149
May 19932,1122,35117.68$37,340
Apr 19932,1021,36518.05$37,941
Mar 19932,2004,09118.14$39,908
Feb 19931,5987,58617.90$28,604
Jan 19932,4046,20216.93$40,700

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.

Apr 2020 — as filed, then multipliedworked
Oil                   81 bbl  × $ 14.75 =     $1,195
Casinghead gas         0 Mcf  × $  1.80 =         $0

────────────────────────────────────────────────────
Month total                                   $1,195

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/1527 is the state's own key, not one this site invented.