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 1549District 02Field 90534001OilCasinghead gasSave
Value, all time
$18.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$106 k
at the published price for each month
Months reported
401
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
OilDisposition315,485 bbl$16,038,501
Casinghead gasProduction830,049 Mcf$2,425,811
Total$18,464,312

352,926 Mcf of this lease's gas, across 47 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 (52)

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 28.3409, -97.1836. A lease has no coordinate of its own — that point is the mean of its wells, and they span 3.7 miles. 1 well has no surveyed location and is left out of it.

28.34545, -97.19195 · centre of 51 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
88.5%
46 of 52 wells
With a plug date
11.5%
6 of 52 wells
Median depth
5,915 ft
44 wells filed one
Completion to plug
26.4 years
median over 5 wells

What the state filed about each well

On the RRC proration schedule
4688.5%
A plug date is filed
611.5%
BothOn the schedule and plugged. Neither fact cancels the other.
611.5%
NeitherNo plug date, and not on the schedule.
611.5%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 44 of 52 wells. Median 5,915 ft, with the middle half between 5,850 and 5,974 ft; the shallowest is 4,160 ft and the deepest 6,341 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

70s
80s
90s
00s
10s
20s

Last completion by decade, 42 of 52 wells, Nov 1973 – Oct 2024. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Nov 1973 – Oct 2024
42 of 52 wells; 10 filed none
Plug dates filed
Sep 1986 – May 2025
6 of 52 wells; 46 filed none

Last completion to plug: a median of 26.4 years across the 5 wells that filed both dates, with the middle half between 14.1 years and 27.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

52 wells

42-3910118777Yes
42-3910121123Yes
42-3910123481Yes
42-3910123996 LYes
42-3910129331Yes
42-39101329885,916 ftSep 1986Yes
42-3910142951Yes
42-3910143679Yes
42-39101437805,927 ftYes
42-39180692119 LYes
42-39101328726,200 ftOct 2024Yes
42-391327001596,215 ftOct 2023Yes
42-391014461226,000 ftOct 2023Yes
42-391013961075,840 ftSep 2023Yes
42-39101444103 L5,840 ftMay 2023Yes
42-39101349735,882 ftMay 2023Yes
42-39101347656,150 ftMay 2023Yes
42-391313101456,112 ftJul 2022Yes
42-39101325696,050 ftJul 2020Yes
42-39101380395,904 ftDec 2019Yes
42-391013941055,845 ftNov 2019Yes
42-39101433605,915 ftApr 2019
42-39101401123 L5,865 ftDec 2018Yes
42-39101440995,835 ftOct 2018Yes
42-39101434755,901 ftSep 2018Yes
42-3918206514,160 ftJan 2017Jul 2017Yes
42-39101346645,915 ftJun 2015Yes
42-39101397108 L5,965 ftMay 2012Yes
42-39101399120 L5,840 ftAug 2011Yes
42-39101326705,918 ftApr 2011Yes
42-39101383456,010 ftApr 2011Yes
42-391013551115,825 ftApr 2011May 2025Yes
42-39101431535,915 ftFeb 2011Yes
42-39101384465,906 ftSep 2009Yes
42-39101233355,923 ftJul 2009Yes
42-39101189845,935 ftNov 2008Yes
42-391013561125,850 ftSep 2008Yes
42-39101447125 L5,840 ftMar 2008Yes
42-39101188835,930 ftApr 2007Yes
42-39101348686,150 ftFeb 2007
42-39101382445,910 ftJan 2006Yes
42-39101494118 L5,835 ftDec 2005Yes
42-39101430525,919 ftDec 2005
42-39101493116 L5,850 ftSep 2004Yes
42-39101435766,208 ftApr 2004
42-39101327715,933 ftApr 2004Yes
42-39101344625,912 ftMar 2001
42-39101358124 L5,855 ftSep 1984Yes
42-39101127866,341 ftJul 1976Jun 2023Yes
42-39104011G 155,410 ftFeb 1975Jul 2001Yes
42-391303351386,017 ftNov 1974
42-39101386485,938 ftNov 1973May 2001Yes

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 20261170106.413.05$12,450
Apr 2026203098.932.87$20,083
Mar 2026276089.753.15$24,771
Feb 2026138063.503.75$8,763
Jan 2026188059.138.00$11,116
Dec 2025262056.664.41$14,845
Nov 2025233058.593.93$13,651
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 20233068.962.26$207
May 2023332470.622.23$2,384
Apr 20231241578.122.24$9,720
Mar 202311611072.852.39$8,714
Feb 20231088775.112.47$8,326
Jan 202328321176.533.39$22,373
Dec 20221789876.415.73$14,162
Nov 202228510985.005.65$24,840
Oct 20222196787.185.86$19,485
Sep 202223512984.888.16$21,000
Aug 20224546994.529.13$43,542
Jul 202257426101.587.54$58,503
Jun 202235869115.097.98$41,753
May 202237275109.378.43$41,318
Apr 2022391154104.226.84$41,803
Mar 2022397213108.885.08$44,307
Feb 202227516191.054.86$25,821
Jan 202232910081.844.54$27,379
Dec 202128411771.323.90$20,711
Nov 202130520777.435.24$24,700
Oct 202136224279.795.71$30,267
Sep 202140521069.865.35$29,417
Aug 202142811666.024.22$28,746
Jul 202146924170.783.98$34,156
Jun 202136632869.493.38$26,542
May 202149726163.483.02$32,337
Apr 20215111,09660.362.76$33,867
Mar 20216224,13661.302.72$49,366
Feb 202140410157.805.55$23,912
Jan 202163232950.412.81$32,784
Dec 2020686044.642.68$30,623
Nov 202077628338.772.71$30,851
Oct 202085023036.972.48$31,995
Sep 202082726737.091.99$31,205
Aug 202095146239.982.39$39,123
Jul 202087538738.371.83$34,280
Jun 202088416934.901.69$31,137
May 202083217516.921.81$14,395
Apr 202089516914.751.80$13,506
Mar 20201,46733430.341.86$45,129
Feb 20201,67737649.881.98$84,393
Jan 20202,25321857.252.09$129,441
Dec 20191,36226459.012.30$80,980
Nov 20191,42520855.302.75$79,375
Oct 20191,476053.472.42$78,922
Sep 2019773055.052.66$42,554
Aug 2019651053.112.30$34,575
Jul 201985717356.272.46$48,649
Jun 2019471052.782.49$24,859
May 20196121,48958.482.74$39,870
Apr 20194431,46762.632.75$31,780
Mar 2019568056.803.06$32,262
Feb 2019540050.852.79$27,459
Jan 2019731046.033.23$33,648
Dec 20181,049046.594.19$48,873
Nov 2018661052.934.24$34,987
Oct 2018828061.443.40$50,872
Sep 2018445059.543.11$26,495
Aug 2018525059.403.07$31,185
Jul 2018537065.142.93$34,980
Jun 2018509060.183.08$30,632
May 201851960665.382.90$35,690
Apr 201850450363.842.90$33,634
Mar 20185301,07761.222.79$35,448
Feb 201851669461.782.77$33,798
Jan 201880714862.874.01$51,329
Dec 201779262357.272.92$47,178
Nov 20178761,19555.423.12$52,274
Oct 20179101,36949.292.98$48,939
Sep 201725710547.523.09$12,537
Aug 201764732345.373.00$30,325
Jul 201788219243.873.09$39,286
Jun 201791479542.493.09$41,290
May 20171,2431,08945.373.26$59,949
Apr 20173959047.933.21$19,221
Mar 20174406146.772.98$20,761
Feb 20174406950.452.95$22,402
Jan 201728412149.413.42$14,446
Dec 20162474948.763.72$12,226
Nov 201643713342.492.64$18,920
Oct 201647510446.193.09$22,262
Sep 201644614941.553.10$18,993
Aug 201640628141.442.92$17,646
Jul 201634554641.622.92$15,956
Jun 201633282245.352.69$17,264
May 201627169042.521.99$12,897
Apr 201635726336.561.99$13,576
Mar 201644023233.011.79$14,941
Feb 20164557526.472.06$12,199
Jan 201665881627.352.36$19,926
Dec 20156661,78332.362.00$25,120
Nov 20157173,89638.792.17$36,256
Oct 20157624,39443.552.43$43,847
Sep 20158302,89842.992.76$43,676
Aug 20158944,45640.162.87$48,703
Jul 20159626,62348.152.95$65,826
Jun 20159884,17956.152.88$67,524
May 20158852,32255.212.96$55,723
Apr 201587399749.822.71$46,191
Mar 20151,4981,13542.892.93$67,580
Feb 20152,2764,78944.662.98$115,899
Jan 20152,4851,84343.433.10$113,638
Dec 201441540554.693.59$24,151
Nov 201447957770.464.25$36,204
Oct 201444685178.303.90$38,242
Sep 201442142186.164.05$37,976
Aug 201434030089.394.04$31,603
Jul 201448841296.564.18$48,843
Jun 201449346198.164.74$50,577
May 201454822194.734.73$52,957
Apr 201451822795.944.81$50,789
Mar 201452570895.895.06$53,922
Feb 201459646597.406.19$60,930
Jan 201459729890.404.86$55,417
Dec 201356015191.824.35$52,077
Nov 201356518888.853.74$50,903
Oct 201361610597.423.78$60,408
Sep 2013637217104.113.72$67,125
Aug 2013624190104.253.52$65,721
Jul 2013668185102.523.72$69,171
Jun 201369022794.403.93$66,029
May 2013679494.834.15$64,406
Apr 201359812093.964.28$56,702
Mar 201363314093.623.91$59,809
Feb 201371516391.233.42$65,787
Jan 201367323491.603.42$62,447
Dec 201261636686.773.42$54,702
Nov 20122928186.953.62$25,683
Oct 20122898289.383.40$26,110
Sep 201230963694.672.92$31,109
Aug 201232848892.662.91$31,812
Jul 201232799485.133.02$30,840
Jun 201228564579.822.52$24,373
May 20123059791.612.49$28,182
Apr 2012212141101.652.00$21,831
Mar 201217443105.052.22$18,374
Feb 2012120153101.102.57$12,525
Jan 201213114098.092.73$13,233
Dec 201122616396.873.24$22,421
Nov 20112943195.723.31$28,244
Oct 201130547884.983.65$27,663
Sep 201126433683.623.99$23,415
Aug 201133836183.404.15$29,687
Jul 201144760594.144.52$44,814
Jun 201144862492.904.64$44,514
May 201142450598.134.40$43,832
Apr 2011327889105.964.33$38,501
Mar 20113671,78096.364.06$42,586
Feb 20114361,62485.644.18$44,127
Jan 20115101,45686.504.59$50,796
Dec 201049794385.734.35$46,708
Nov 20105871,16380.843.80$51,867
Oct 201070336978.103.51$56,199
Sep 201081965472.633.98$62,087
Aug 201099633973.684.42$74,883
Jul 201098872872.554.74$75,128
Jun 201099088870.364.91$74,017
May 20101,09748171.124.24$80,056
Apr 20101,1456581.694.12$93,803
Mar 20101,41929578.394.39$112,530
Feb 20101,37487473.585.44$105,856
Jan 20101,4532,09274.365.96$120,522
Dec 20091,4731,29771.445.48$112,344
Nov 20091,48372174.593.75$113,322
Oct 20091,6802,16172.544.11$130,749
Sep 20091,94562565.543.06$129,391
Aug 20091,52684567.423.22$105,603
Jul 200986765961.133.46$55,283
Jun 200961441866.163.90$42,250
May 200977439354.743.93$43,912
Apr 20091,00552246.773.59$48,877
Mar 20091,05166342.144.06$46,980
Feb 200995577532.814.63$34,924
Jan 20091,12581935.865.37$44,741
Dec 20081,6081,24737.105.98$67,110
Nov 20081,3841,35155.496.86$86,067
Oct 200863878975.246.92$53,465
Sep 2008658546101.767.88$71,259
Aug 2008729595114.228.48$88,314
Jul 20088811,110131.0811.39$128,124
Jun 20089111,324131.3313.03$136,897
May 20081,2581,717123.1711.57$174,821
Apr 20081,4933,127110.3110.45$197,385
Mar 20081,2133,768101.909.66$160,019
Feb 20081,8613,75092.538.77$205,088
Jan 20081,9212,35090.388.21$192,903
Dec 20072,3141,44688.337.30$214,954
Nov 20072,3212,51391.677.29$231,090
Oct 20072,2932,44982.856.92$206,927
Sep 20072,3234,15875.846.24$202,140
Aug 20072,7183,10969.066.39$207,565
Jul 20072,4962,81770.906.39$194,961
Jun 20071,6023,13462.007.55$122,981
May 20072,7061,91658.747.85$173,984
Apr 20074,0223,01559.617.81$263,284
Mar 20074,7063,61656.927.30$294,269
Feb 20071,85559255.108.22$107,074
Jan 20072,0851,00050.306.73$111,602
Dec 20062,0221,11056.656.92$122,226
Nov 20061,64465654.207.62$94,102
Oct 20062,00392454.906.01$115,521
Sep 20061,8371,16660.085.04$116,240
Aug 20061,6951,00068.717.34$123,803
Jul 20061,4531,00969.376.34$107,194
Jun 20061,2172,99166.286.38$99,757
May 20061,1213,34666.016.42$95,495
Apr 200687276864.397.36$61,801
Mar 200697182356.707.08$60,885
Feb 200647571657.597.75$32,905
Jan 200650275060.598.93$37,116
Dec 200540293554.9413.42$34,629
Nov 200542765254.6910.59$30,256
Oct 200562366458.3413.80$45,506
Sep 20051,43176961.4512.08$97,224
Aug 20051,1581,25661.519.80$83,533
Jul 20059632,69455.697.84$74,760
Jun 20051,0922,59652.337.38$76,306
May 20051,7762,96445.226.65$100,025
Apr 20051,9903,23049.207.36$121,682
Mar 20052,2267,06150.377.15$162,644
Feb 20052,0665,88045.226.31$130,539
Jan 20052,0599,62543.166.32$149,718
Dec 20042,1498,98039.866.75$146,284
Nov 20042,17314,59645.286.33$190,792
Oct 20047,01817,39149.706.52$462,099
Sep 20045,8354,61243.245.28$276,675
Aug 20045,2297,25042.375.55$261,795
Jul 200414,66813,13338.286.08$641,395
Jun 20046,9096,51136.106.43$291,300
May 20042,3325,26937.486.49$121,623
Apr 20044624,53034.475.86$42,464
Mar 20043874,80434.365.53$39,864
Feb 20043185,36932.455.51$39,900
Jan 20043945,58032.036.30$47,772
Dec 20034334,65030.266.30$42,405
Nov 20034444,50028.804.60$33,465
Oct 20034594,65028.174.76$35,062
Sep 20035545,25026.314.75$39,510
Aug 20036325,00729.765.13$44,493
Jul 20034943,91929.415.17$34,793
Jun 20035454,14328.565.98$40,353
May 20035212,17026.595.97$26,814
Apr 20034152,28026.675.41$23,397
Mar 20035111,76731.146.10$26,684
Feb 20034491,59633.487.93$27,682
Jan 20035772,96530.315.58$34,040
Dec 20021,1444,98826.914.85$54,996
Nov 20027794,98824.664.14$39,845
Oct 20026884,04926.464.23$35,328
Sep 20026544,81027.443.64$35,431
Aug 20023066,76525.963.16$29,349
Jul 2002443024.583.06$10,889
Jun 2002252023.733.34$5,980
May 200242220124.663.58$11,127
Apr 2002290023.653.51$6,859
Mar 2002318022.003.10$6,996
Feb 2002400018.222.38$7,288
Jan 2002615017.172.38$10,560
Dec 20012257,47516.932.36$21,483
Nov 20012956,65718.072.41$21,344
Oct 20017141,48519.782.53$17,878
Sep 20016871,65624.262.25$20,395
Aug 20013973,09724.873.05$19,329
Jul 20016935,97223.933.20$35,676
Jun 20018762,50724.563.82$31,102
May 20011,2344,62525.524.31$51,413
Apr 20019412,66824.685.34$37,459
Mar 20012,9241,89524.545.38$81,943
Feb 20011,6102,24527.755.77$57,625
Jan 20015003,24727.478.40$41,006
Dec 2000123,43426.889.12$31,649
Nov 2000454,66032.215.66$27,816
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 199947024.282.42$1,141
Nov 19998937723.192.43$2,982
Oct 1999261520.982.80$1,766
Sep 19993021.752.62$65
Aug 1999125,06019.262.88$14,782
Jul 1999205,42817.892.37$13,235
Jun 1999187,85815.942.36$18,848
May 1999226,25815.792.32$14,872
Apr 1999165,86915.102.21$13,201
Mar 199962,37712.471.84$4,445
Feb 19992809.981.82$279
Jan 1999621,39410.381.90$3,292
Dec 19981202,4169.201.77$5,388
Nov 199812237110.892.19$2,139
Oct 19988935212.421.97$1,799
Sep 199811134612.592.08$2,118
Aug 199818544211.301.91$2,934
Jul 199819942811.742.24$3,294
Jun 199820748711.242.24$3,416
May 199813949712.622.21$2,851
Apr 199881813.042.51$149
Mar 19980012.802.31$0
Feb 19980013.952.30$0
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 19970019.253.15$0
Sep 199725017.742.95$444
Aug 19979223617.862.55$2,246
Jul 19971261617.582.25$2,251
Jun 19971431817.242.26$2,506
May 19972332518.972.31$4,478
Apr 19973153817.882.08$5,711
Mar 19974262,06118.951.94$12,069
Feb 19976081,38920.492.21$15,522
Jan 19978502,29323.483.54$28,075
Dec 19961,0492,91723.32$24,463
Nov 19961,0383,10121.97$22,805
Oct 19961,05977323.31$24,685
Sep 19961,06575022.22$23,664
Aug 19961,7161,47820.26$34,766
Jul 19962,3711,97619.55$46,353
Jun 19963,0452,51918.73$57,033
May 19962,3892,06219.43$46,418
Apr 19962,8772,64221.51$61,884
Mar 19962,8632,58719.38$55,485
Feb 19969871,29016.98$16,759
Jan 1996174017.07$2,970
Dec 19951641,38817.19$2,819
Nov 19951701,32416.00$2,720
Oct 19952341,33415.43$3,611
Sep 19953514,00216.18$5,679
Aug 19954694,74115.92$7,466
Jul 19954796,45415.24$7,300
Jun 19953935,44316.41$6,449
May 19953333,34817.56$5,847
Apr 19953363,82017.73$5,957
Mar 19954054,18016.44$6,658
Feb 199557910,94516.58$9,600
Jan 199564211,70315.92$10,221
Dec 199465818,54315.03$9,890
Nov 199459114,54515.90$9,397
Oct 199481112,53715.58$12,635
Sep 19949318,66215.29$14,235
Aug 19948158,91916.13$13,146
Jul 19948578,20217.56$15,049
Jun 19949486,27717.09$16,201
May 19949455,80115.88$15,007
Apr 19948007,67514.14$11,312
Mar 199498923,41612.46$12,323
Feb 199495224,06312.50$11,900
Jan 19941,02622,98512.66$12,989
Dec 199398415,04912.33$12,133
Nov 19939297,68514.49$13,461
Oct 19936884,97115.85$10,905
Sep 19937928,26315.03$11,904
Aug 19937537,04515.66$11,792
Jul 19938407,08315.46$12,986
Jun 19937497,14816.79$12,576
May 199384311,59917.68$14,904
Apr 199382511,73118.05$14,891
Mar 19936913,68618.14$12,535
Feb 19937043,48117.90$12,602
Jan 19931,06322,78316.93$17,997

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                  117 bbl  × $106.41 =    $12,450
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $12,450

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/1549 is the state's own key, not one this site invented.