LOCKHART

Operated by MEWBOURNE OIL COMPANY (P-5 562560) in the COBURN (TONKAWA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 6839District 10Field 19240750OilCasinghead gasSaveExport
Value, all time
$4.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$52 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 6 leases and 11 wells, and the rule below applies to all of them.

Discovered
1964-07-12
as the register files it
Field class
Oil
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 field rule took effect on 2002-11-12.

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
OilDisposition77,838 bbl$3,831,562
Casinghead gasProduction173,169 Mcf$609,426
Total$4,440,988

5,368 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 (2)

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 36.1088, -100.1464. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

36.10880, -100.14639 · 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
50.0%
1 of 2 wells
With a plug date
50.0%
1 of 2 wells
Median depth
9,455 ft
2 wells filed one
Completion to plug
34.1 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
150.0%
A plug date is filed
150.0%
BothOn the schedule and plugged. Neither fact cancels the other.
150.0%
NeitherNo plug date, and not on the schedule.
150.0%

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 7,510 and 11,400 ft, median 9,455 ft, over the 2 wells that filed a depth.

Completions filed
Mar 1992 – Oct 2006
2 of 2 wells
Plug dates filed
Apr 2026
1 of 2 wells; 1 filed none

Last completion to plug: a median of 34.1 years across the 1 well that filed both dates, with the middle half between 34.1 years and 34.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-29532468311,400 ftOct 2006
42-2953197417,510 ftMar 1992Apr 2026Yes

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 20260220106.413.05$670
Apr 202618328398.932.87$18,916
Mar 2026028889.753.15$907
Feb 2026023763.503.75$889
Jan 202618823159.138.00$12,964
Dec 2025029156.664.41$1,284
Nov 2025022658.593.93$887
Oct 202503659.383.30$119
Sep 2025018462.743.08$566
Aug 2025028163.933.01$847
Jul 202519024366.743.32$13,486
Jun 2025029566.483.13$923
May 2025034660.553.23$1,118
Apr 2025030762.363.54$1,088
Mar 202518542667.704.27$14,343
Feb 2025048370.884.34$2,097
Jan 20250074.324.28$0
Dec 202403968.993.12$122
Nov 202406069.052.20$132
Oct 20240371.372.28$7
Sep 202418229869.612.36$13,374
Aug 2024042275.632.06$871
Jul 2024044179.932.15$947
Jun 202408778.082.63$229
May 202414832978.812.20$12,387
Apr 2024023484.451.66$388
Mar 2024017180.301.55$264
Feb 2024039676.091.78$706
Jan 202418941273.023.30$15,159
Dec 2023043171.262.61$1,125
Nov 2023046577.892.81$1,306
Oct 202318747885.443.09$17,453
Sep 2023053289.042.74$1,455
Aug 2023045780.522.67$1,222
Jul 2023028574.852.64$753
Jun 2023012668.962.26$285
May 202317951970.622.23$13,797
Apr 2023048578.122.24$1,085
Mar 2023057172.852.39$1,366
Feb 202318066375.112.47$15,155
Jan 2023083476.533.39$2,825
Dec 202201776.415.73$97
Nov 202218232185.005.65$17,282
Oct 20222049887.185.86$4,664
Sep 2022049284.888.16$4,017
Aug 2022054594.529.13$4,974
Jul 2022176582101.587.54$22,268
Jun 20220603115.097.98$4,810
May 2022178644109.378.43$24,899
Apr 20220640104.226.84$4,376
Mar 20220593108.885.08$3,010
Feb 202217458191.054.86$18,666
Jan 2022059781.844.54$2,709
Dec 2021070271.323.90$2,737
Nov 202118172977.435.24$17,832
Oct 2021062679.795.71$3,577
Sep 202118566469.865.35$16,477
Aug 2021067766.024.22$2,857
Jul 202117869470.783.98$15,362
Jun 2021071969.493.38$2,431
May 2021077263.483.02$2,330
Apr 202117486860.362.76$12,897
Mar 2021075661.302.72$2,054
Feb 202105857.805.55$322
Jan 202117355150.412.81$10,269
Dec 2020066944.642.68$1,790
Nov 202017672838.772.71$8,794
Oct 2020074936.972.48$1,856
Sep 202017673737.091.99$7,995
Aug 2020081339.982.39$1,939
Jul 202018352238.371.83$7,974
Jun 2020088534.901.69$1,496
May 202017882116.921.81$4,502
Apr 2020095214.751.80$1,718
Mar 202017497130.341.86$7,082
Feb 2020038949.881.98$770
Jan 2020076757.252.09$1,607
Dec 2019061159.012.30$1,408
Nov 201918732755.302.75$11,241
Oct 201918590853.472.42$12,088
Sep 2019099755.052.66$2,649
Aug 20191731,09853.112.30$11,718
Jul 201901,09756.272.46$2,699
Jun 20191851,06252.782.49$12,410
May 201901,07158.482.74$2,935
Apr 20191841,24062.632.75$14,935
Mar 20193791,30756.803.06$25,529
Feb 201901,06050.852.79$2,960
Jan 20191771,17846.033.23$11,950
Dec 201801,28146.594.19$5,362
Nov 20181811,15552.934.24$14,474
Oct 20181781,17161.443.40$14,915
Sep 201801,07059.543.11$3,326
Aug 201817593759.403.07$13,268
Jul 201801,08965.142.93$3,193
Jun 20181761,27160.183.08$14,502
May 20181841,55665.382.90$16,544
Apr 20181891,46563.842.90$16,315
Mar 20181801,24761.222.79$14,495
Feb 2018079561.782.77$2,199
Jan 201817586862.874.01$14,482
Dec 201701,00157.272.92$2,924
Nov 2017080555.423.12$2,510
Oct 20173471,02749.292.98$20,168
Sep 201701,06847.523.09$3,297
Aug 201717594945.373.00$10,791
Jul 2017059043.873.09$1,822
Jun 201717374442.493.09$9,648
May 2017099345.373.26$3,241
Apr 2017092047.933.21$2,955
Mar 2017092146.772.98$2,748
Feb 201717767450.452.95$10,920
Jan 201701,03549.413.42$3,538
Dec 2016066048.763.72$2,457
Nov 2016097442.492.64$2,576
Oct 201617696946.193.09$11,124
Sep 201601,23741.553.10$3,835
Aug 20161751,13641.442.92$10,574
Jul 201601,20441.622.92$3,521
Jun 20161771,12545.352.69$11,049
May 201601,32042.521.99$2,628
Apr 20161761,15436.561.99$8,732
Mar 20161821,26233.011.79$8,272
Feb 20161851,20826.472.06$7,390
Jan 20161791,17627.352.36$7,676
Dec 201501,16532.362.00$2,332
Nov 20153711,18538.792.17$16,959
Oct 20151761,31043.552.43$10,844
Sep 2015095942.992.76$2,645
Aug 201534888940.162.87$16,529
Jul 2015092448.152.95$2,721
Jun 2015076956.152.88$2,217
May 20153671,10355.212.96$23,522
Apr 2015092549.822.71$2,504
Mar 201517964342.892.93$9,564
Feb 20151541,32144.662.98$10,809
Jan 20153631,45443.433.10$20,273
Dec 20141841,23454.693.59$14,495
Nov 201401,40470.464.25$5,970
Oct 20143041,64778.303.90$30,228
Sep 20141861,06786.164.05$20,342
Aug 20141781,39089.394.04$21,520
Jul 20141861,36096.564.18$23,644
Jun 20141741,34998.164.74$23,470
May 20143721,13094.734.73$40,581
Apr 201401,20195.944.81$5,776
Mar 201418289595.895.06$21,978
Feb 2014094397.406.19$5,839
Jan 20141931,20490.404.86$23,300
Dec 20131761,41791.824.35$22,331
Nov 20133621,28388.853.74$36,960
Oct 20131771,31797.423.78$22,221
Sep 2013181995104.113.72$22,543
Aug 20131841,048104.253.52$22,874
Jul 2013180867102.523.72$21,677
Jun 201317886594.403.93$20,206
May 201336993594.834.15$38,872
Apr 2013081593.964.28$3,490
Mar 2013090993.623.91$3,557
Feb 201336871891.233.42$36,028
Jan 201318777491.603.42$19,776
Dec 201201,08886.773.42$3,721
Nov 20123621,21886.953.62$35,891
Oct 20121831,16389.383.40$20,310
Sep 20121891,39394.672.92$21,958
Aug 20121781,08892.662.91$19,658
Jul 2012065685.133.02$1,982
Jun 2012053579.822.52$1,348
May 201236958791.612.49$35,265
Apr 2012364819101.652.00$38,636
Mar 2012359986105.052.22$39,904
Feb 2012184728101.102.57$20,474
Jan 201218198398.092.73$20,442
Dec 20113641,12096.873.24$38,889
Nov 201118258195.723.31$19,345
Oct 20113571,08984.983.65$34,311
Sep 20111761,07183.623.99$18,986
Aug 20113471,06883.404.15$33,371
Jul 20113581,00094.144.52$38,219
Jun 201118663792.904.64$20,235
May 201136633298.134.40$37,378
Apr 2011548306105.964.33$59,392
Mar 201136333296.364.06$36,326
Feb 201136233285.644.18$32,389
Jan 2011027286.504.59$1,248
Dec 201054921585.734.35$48,001
Nov 201018626880.843.80$16,053
Oct 20105521,41778.103.51$48,083
Sep 201033896572.633.98$28,389
Aug 2010091873.684.42$4,057
Jul 201036421172.554.74$27,408
Jun 201017511670.364.91$12,883
May 20101782071.124.24$12,744
Apr 2010355081.694.12$29,000
Mar 2010525178.394.39$41,159
Feb 2010546073.585.44$40,175
Jan 2010354074.365.96$26,323
Dec 200907571.445.48$411
Nov 2009365974.593.75$27,259
Oct 200918426772.544.11$14,445
Sep 20093701,00765.543.06$27,336
Aug 20097121,26667.423.22$52,078
Jul 20091791,00961.133.46$14,438
Jun 20098841,34566.163.90$63,724
May 200917456054.743.93$11,723
Apr 20091852446.773.59$8,739
Mar 20090042.144.06$0
Feb 2009182032.814.63$5,971
Jan 2009191035.865.37$6,849
Dec 200803637.105.98$215
Nov 20081882755.496.86$10,617
Oct 200855165675.246.92$45,998
Sep 2008538106101.767.88$55,582
Aug 2008185123114.228.48$22,174
Jul 20080110131.0811.39$1,253
Jun 2008545424131.3313.03$77,101
May 20080847123.1711.57$9,803
Apr 200818018110.3110.45$20,044
Mar 20081791101.909.66$18,250
Feb 2008181192.538.77$16,757
Jan 2008185190.388.21$16,729
Dec 200718946788.337.30$20,104
Nov 20075511,10591.677.29$58,568
Oct 2007059182.856.92$4,091
Sep 200736720275.846.24$29,095
Aug 200753520269.066.39$38,237
Jul 200772420270.906.39$52,622
Jun 200736220262.007.55$23,969
May 200754020858.747.85$33,352
Apr 200791320259.617.81$56,001
Mar 200772820856.927.30$42,957
Feb 200735618855.108.22$21,160
Jan 20071,09120850.306.73$56,276
Dec 20061,08020856.656.92$62,621
Nov 20061,09020254.207.62$60,617
Oct 200618120854.906.01$11,188
Sep 200617920260.085.04$11,772
Aug 20061867268.717.34$13,309
Jul 20061817269.376.34$13,013
Jun 20061897066.286.38$12,974
May 20061927266.016.42$13,137
Apr 20063697064.397.36$24,275
Mar 200607256.707.08$510
Feb 20061846557.597.75$11,100
Jan 200607260.598.93$643
Dec 20051947254.9413.42$11,624
Nov 200507054.6910.59$741
Oct 20051857258.3413.80$11,786
Sep 20051897061.4512.08$12,460
Aug 20051847261.519.80$12,023
Jul 20051817255.697.84$10,645
Jun 20051517052.337.38$8,419
May 200507245.226.65$479
Apr 20053687049.207.36$18,621
Mar 20051737250.377.15$9,229
Feb 20053626545.226.31$16,780
Jan 200507243.166.32$455
Dec 200407239.866.75$486
Nov 20043587045.286.33$16,653
Oct 200407249.706.52$469
Sep 20041837043.245.28$8,283
Aug 20041847242.375.55$8,196
Jul 20041797238.286.08$7,290
Jun 20041867036.106.43$7,165
May 20041817237.486.49$7,251
Apr 20041837034.475.86$6,718
Mar 20041857234.365.53$6,755
Feb 20042716732.455.51$9,163
Jan 20043717232.036.30$12,337
Dec 200307230.266.30$454
Nov 20033757028.804.60$11,122
Oct 20031797228.174.76$5,385
Sep 200307026.314.75$332
Aug 200307229.765.13$369
Jul 20033607229.415.17$10,960
Jun 20031797228.565.98$5,543
May 20031837226.595.97$5,296
Apr 20030026.675.41$0
Mar 2003373031.146.10$11,615
Feb 2003189033.487.93$6,328
Jan 20030030.315.58$0
Dec 2002369026.914.85$9,930
Nov 2002168024.664.14$4,143
Oct 20020026.464.23$0
Sep 2002183027.443.64$5,022
Aug 2002180025.963.16$4,673
Jul 2002352024.583.06$8,652
Jun 2002179023.733.34$4,248
May 2002186024.663.58$4,587
Apr 2002176023.653.51$4,162
Mar 2002362022.003.10$7,964
Feb 2002185018.222.38$3,371
Jan 2002188017.172.38$3,228
Dec 2001186016.932.36$3,149
Nov 20010018.072.41$0
Oct 2001360019.782.53$7,121
Sep 20010024.262.25$0
Aug 2001195024.873.05$4,850
Jul 2001369023.933.20$8,830
Jun 2001192024.563.82$4,716
May 20010025.524.31$0
Apr 20014026024.685.34$10,241
Mar 2001203024.545.38$4,982
Feb 20012045627.755.77$5,984
Jan 20012046227.478.40$6,125
Dec 20001766326.889.12$5,306
Nov 20002036132.215.66$6,884
Oct 20002026331.235.15$6,633
Sep 20001956131.875.19$6,531
Aug 20001965929.644.54$6,077
Jul 20001986328.534.09$5,907
Jun 20001995729.304.40$6,081
May 20002046327.263.68$5,793
Apr 20002016124.513.12$5,117
Mar 20004026128.422.86$11,599
Feb 20002014927.622.73$5,685
Jan 200001725.272.48$42
Dec 19992006324.282.42$5,009
Nov 19992016123.192.43$4,810
Oct 19993906320.982.80$8,359
Sep 199906121.752.62$160
Aug 19991996319.262.88$4,014
Jul 19993896317.892.37$7,109
Jun 19991826115.942.36$3,045
May 19993875515.792.32$6,238
Apr 199906115.102.21$135
Mar 19991946312.471.84$2,535
Feb 1999197579.981.82$2,070
Jan 19993876310.381.90$4,137
Dec 1998196539.201.77$1,897
Nov 199806110.892.19$133
Oct 19983916312.421.97$4,980
Sep 19981936112.592.08$2,557
Aug 19981886311.301.91$2,245
Jul 19981956311.742.24$2,430
Jun 19983586111.242.24$4,160
May 199806312.622.21$139
Apr 19983785713.042.51$5,072
Mar 19981946312.802.31$2,629
Feb 19981975713.952.30$2,879
Jan 19983766314.702.15$5,663
Dec 19971836316.322.41$3,138
Nov 19971906118.193.09$3,644
Oct 19971906319.253.15$3,856
Sep 19973806117.742.95$6,921
Aug 19971906117.862.55$3,549
Jul 19971889417.582.25$3,516
Jun 19971889117.242.26$3,447
May 19973869418.972.31$7,539
Apr 19971989417.882.08$3,736
Mar 19971999418.951.94$3,953
Feb 19971958520.492.21$4,183
Jan 19973927923.483.54$9,484
Dec 19961889423.32$4,384
Nov 19961849121.97$4,042
Oct 19963959423.31$9,207
Sep 199619512122.22$4,333
Aug 199637112120.26$7,516
Jul 19961808519.55$3,519
Jun 19961898118.73$3,540
May 199638610919.43$7,500
Apr 199620212121.51$4,345
Mar 199639112119.38$7,578
Feb 199620010116.98$3,396
Jan 199619911317.07$3,397
Dec 199520011717.19$3,438
Nov 199520311316.00$3,248
Oct 199537610515.43$5,802
Sep 199539112116.18$6,326
Aug 199519312515.92$3,073
Jul 199519812515.24$3,018
Jun 199537711716.41$6,187
May 199519312517.56$3,389
Apr 199538912117.73$6,897
Mar 199519412516.44$3,189
Feb 199538511316.58$6,383
Jan 199519312515.92$3,073
Dec 199439012515.03$5,862
Nov 199419312115.90$3,069
Oct 199438312515.58$5,967
Sep 199419211715.29$2,936
Aug 199437812116.13$6,097
Jul 199419611717.56$3,442
Jun 199438511717.09$6,580
May 199419311715.88$3,065
Apr 199438512114.14$5,444
Mar 199437811712.46$4,710
Feb 19941949312.50$2,425
Jan 199438212512.66$4,836
Dec 199338612512.33$4,759
Nov 199319311714.49$2,797
Oct 19933829715.85$6,055
Sep 199337111315.03$5,576
Aug 199318612515.66$2,913
Jul 199337012515.46$5,720
Jun 199337312116.79$6,263
May 199337812517.68$6,683
Apr 199338112118.05$6,877
Mar 199354910518.14$9,959
Feb 19933857317.90$6,892
Jan 19931932116.93$3,267

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       220 Mcf  × $  3.05 =       $670

────────────────────────────────────────────────────
Month total                                     $670

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/6839 is the state's own key, not one this site invented.