MITCHELL FEE

Operated by WINN OPERATING, LLC (P-5 100109) in the WESTBROOK field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 11428District 08Field 96563001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$12.1 M
Jan 1993 – May 2026
Value, last 12 filed months
$129 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 103 leases and 2,419 wells, and the rule below applies to all of them.

Discovered
1921-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
933 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 10 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: OF ALL NECESSARY FORMS AND FEES STILL REQUIRED,EFFECTIVE 6/27/11

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
NGPA12none

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
OilDisposition311,992 bbl$12,145,364
Casinghead gasProduction15 Mcf$16
Total$12,145,380

12 Mcf of this lease's gas, across 12 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 (18)

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 32.3493, -101.0998. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.0 miles.

32.34910, -101.10192 · 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
72.2%
13 of 18 wells
With a plug date
66.7%
12 of 18 wells
Median depth
3,200 ft
18 wells filed one
Completion to plug
33.3 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
1372.2%
A plug date is filed
1266.7%
BothOn the schedule and plugged. Neither fact cancels the other.
1266.7%
NeitherNo plug date, and not on the schedule.
527.8%

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, 18 of 18 wells. Median 3,200 ft, with the middle half between 3,200 and 3,200 ft; the shallowest is 3,100 ft and the deepest 3,300 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, 14 of 18 wells, May 1964 – Dec 1989. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
May 1964 – Dec 1989
14 of 18 wells; 4 filed none
Plug dates filed
Oct 1987 – Jun 2021
12 of 18 wells; 6 filed none

Last completion to plug: a median of 33.3 years across the 8 wells that filed both dates, with the middle half between 30.2 years and 36.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

18 wells

42-3350148623,150 ftApr 2004Yes
42-3350148733,100 ftJun 2021Yes
42-3350148953,165 ftAug 2015Yes
42-3350151263,300 ftOct 1987Yes
42-33532820123,200 ftDec 1989Jul 2016Yes
42-33532821183,200 ftJun 1985
42-33532842173,200 ftJun 1985
42-33532841163,200 ftJun 1985Feb 2019Yes
42-33532823143,200 ftApr 1985
42-33532840153,200 ftApr 1985
42-33532822113,200 ftMar 1985Jun 2021Yes
42-33532839133,200 ftOct 1984Jun 2021Yes
42-3353280993,200 ftOct 1984Jun 2021Yes
42-33532808103,200 ftOct 1984Jul 2017Yes
42-3353271383,200 ftJul 1984Aug 2015Yes
42-3353271573,200 ftJul 1984
42-3350148513,200 ftOct 1972Jan 2000Yes
42-3350148843,160 ftMay 1964Yes

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 2026151098.932.87$14,938
Mar 2026149089.753.15$13,373
Feb 2026321063.503.75$20,384
Jan 2026157059.138.00$9,283
Dec 20250056.664.41$0
Nov 2025166058.593.93$9,726
Oct 2025326059.383.30$19,358
Sep 20250062.743.08$0
Aug 2025148063.933.01$9,462
Jul 2025173066.743.32$11,546
Jun 2025320066.483.13$21,274
May 2025163060.553.23$9,870
Apr 2025162062.363.54$10,102
Mar 2025177067.704.27$11,983
Feb 2025326070.884.34$23,107
Jan 20250074.324.28$0
Dec 2024163068.993.12$11,245
Nov 2024157069.052.20$10,841
Oct 2024323071.372.28$23,053
Sep 2024161069.612.36$11,207
Aug 2024160075.632.06$12,101
Jul 2024329079.932.15$26,297
Jun 2024169078.082.63$13,196
May 2024158078.812.20$12,452
Apr 2024324084.451.66$27,362
Mar 2024323080.301.55$25,937
Feb 2024158076.091.78$12,022
Jan 2024314073.023.30$22,928
Dec 2023333071.262.61$23,730
Nov 2023168077.892.81$13,086
Oct 2023312085.443.09$26,657
Sep 2023158089.042.74$14,068
Aug 2023158080.522.67$12,722
Jul 2023314074.852.64$23,503
Jun 2023303068.962.26$20,895
May 2023158070.622.23$11,158
Apr 2023314078.122.24$24,530
Mar 2023321072.852.39$23,385
Feb 2023327075.112.47$24,561
Jan 2023315076.533.39$24,107
Dec 2022312076.415.73$23,840
Nov 2022323085.005.65$27,455
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 2022156094.529.13$14,745
Jul 20223440101.587.54$34,944
Jun 20221560115.097.98$17,954
May 20223080109.378.43$33,686
Apr 20223160104.226.84$32,934
Mar 20224680108.885.08$50,956
Feb 2022155091.054.86$14,113
Jan 2022154081.844.54$12,603
Dec 2021159071.323.90$11,340
Nov 2021157077.435.24$12,157
Oct 2021154079.795.71$12,288
Sep 2021310369.865.35$21,673
Aug 2021150066.024.22$9,903
Jul 2021310070.783.98$21,942
Jun 2021196069.493.38$13,620
May 2021303063.483.02$19,234
Apr 2021288060.362.76$17,384
Mar 2021470061.302.72$28,811
Feb 2021152057.805.55$8,786
Jan 2021157050.412.81$7,914
Dec 2020162044.642.68$7,232
Nov 2020315038.772.71$12,213
Oct 20200036.972.48$0
Sep 2020156037.091.99$5,786
Aug 2020159039.982.39$6,357
Jul 2020156038.371.83$5,986
Jun 2020159034.901.69$5,549
May 2020152016.921.81$2,572
Apr 20200014.751.80$0
Mar 2020314030.341.86$9,527
Feb 2020323049.881.98$16,111
Jan 2020517057.252.09$29,598
Dec 2019312059.012.30$18,411
Nov 2019152055.302.75$8,406
Oct 2019165053.472.42$8,823
Sep 2019330055.052.66$18,167
Aug 2019157053.112.30$8,338
Jul 2019323056.272.46$18,175
Jun 2019330052.782.49$17,417
May 2019325058.482.74$19,006
Apr 2019148062.632.75$9,269
Mar 2019164056.803.06$9,315
Feb 2019321050.852.79$16,323
Jan 2019153046.033.23$7,043
Dec 2018284046.594.19$13,232
Nov 2018321052.934.24$16,991
Oct 2018152061.443.40$9,339
Sep 2018281059.543.11$16,731
Aug 2018152059.403.07$9,029
Jul 2018304065.142.93$19,803
Jun 2018284060.183.08$17,091
May 2018297065.382.90$19,418
Apr 2018229063.842.90$14,619
Mar 2018426061.222.79$26,080
Feb 2018147061.782.77$9,082
Jan 2018312062.874.01$19,615
Dec 2017311057.272.92$17,811
Nov 2017315055.423.12$17,457
Oct 2017471049.292.98$23,216
Sep 2017311047.523.09$14,779
Aug 2017493045.373.00$22,367
Jul 2017465043.873.09$20,400
Jun 2017322042.493.09$13,682
May 2017483045.373.26$21,914
Apr 2017323047.933.21$15,481
Mar 2017490046.772.98$22,917
Feb 2017310050.452.95$15,640
Jan 2017478049.413.42$23,618
Dec 2016315048.763.72$15,359
Nov 2016485042.492.64$20,608
Oct 2016483046.193.09$22,310
Sep 2016314041.553.10$13,047
Aug 2016468041.442.92$19,394
Jul 2016480041.622.92$19,978
Jun 2016481045.352.69$21,813
May 2016316042.521.99$13,436
Apr 2016481036.561.99$17,585
Mar 2016479033.011.79$15,812
Feb 2016321026.472.06$8,497
Jan 2016474027.352.36$12,964
Dec 2015481032.362.00$15,565
Nov 2015479038.792.17$18,580
Oct 2015319043.552.43$13,892
Sep 2015476042.992.76$20,463
Aug 2015632040.162.87$25,381
Jul 2015314048.152.95$15,119
Jun 2015475056.152.88$26,671
May 2015323055.212.96$17,833
Apr 2015642049.822.71$31,984
Mar 2015322042.892.93$13,811
Feb 2015464044.662.98$20,722
Jan 2015308043.433.10$13,376
Dec 2014492054.693.59$26,907
Nov 2014359070.464.25$25,295
Oct 2014352078.303.90$27,562
Sep 2014494086.164.05$42,563
Aug 2014369089.394.04$32,985
Jul 2014490096.564.18$47,314
Jun 2014451098.164.74$44,270
May 2014511094.734.73$48,407
Apr 2014354095.944.81$33,963
Mar 2014537095.895.06$51,493
Feb 2014325097.406.19$31,655
Jan 2014534090.404.86$48,274
Dec 2013357091.824.35$32,780
Nov 2013540088.853.74$47,979
Oct 2013380097.423.78$37,020
Sep 20135500104.113.72$57,261
Aug 20133830104.253.52$39,928
Jul 20133730102.523.72$38,240
Jun 2013545094.403.93$51,448
May 2013562094.834.15$53,294
Apr 2013491093.964.28$46,134
Mar 2013540093.623.91$50,555
Feb 2013357091.233.42$32,569
Jan 2013421091.603.42$38,564
Dec 2012560086.773.42$48,591
Nov 2012383086.953.62$33,302
Oct 2012532089.383.40$47,550
Sep 2012372094.672.92$35,217
Aug 2012554092.662.91$51,334
Jul 2012551085.133.02$46,907
Jun 2012554079.822.52$44,220
May 2012557091.612.49$51,027
Apr 20126880101.652.00$69,935
Mar 20124970105.052.22$52,210
Feb 20124740101.102.57$47,921
Jan 2012484098.092.73$47,476
Dec 2011635096.873.24$61,512
Nov 2011684095.723.31$65,472
Oct 2011353084.983.65$29,998
Sep 2011513083.623.99$42,897
Aug 2011676083.404.15$56,378
Jul 2011513094.144.52$48,294
Jun 2011665092.904.64$61,779
May 2011673098.134.40$66,041
Apr 20115750105.964.33$60,927
Mar 2011430096.364.06$41,435
Feb 2011689085.644.18$59,006
Jan 2011822086.504.59$71,103
Dec 2010487085.734.35$41,751
Nov 2010660080.843.80$53,354
Oct 2010759078.103.51$59,278
Sep 2010142072.633.98$10,313
Aug 2010945073.684.42$69,628
Jul 2010650072.554.74$47,158
Jun 2010921070.364.91$64,802
May 2010480071.124.24$34,138
Apr 2010643081.694.12$52,527
Mar 2010508078.394.39$39,822
Feb 2010593073.585.44$43,633
Jan 2010656074.365.96$48,780
Dec 2009616071.445.48$44,007
Nov 2009678074.593.75$50,572
Oct 2009701072.544.11$50,851
Sep 2009497065.543.06$32,573
Aug 2009692067.423.22$46,655
Jul 2009715061.133.46$43,708
Jun 2009530066.163.90$35,065
May 2009702054.743.93$38,427
Apr 2009681046.773.59$31,850
Mar 2009850042.144.06$35,819
Feb 2009488032.814.63$16,011
Jan 2009982035.865.37$35,215
Dec 2008499037.105.98$18,513
Nov 2008524055.496.86$29,077
Oct 2008717075.246.92$53,947
Sep 20088770101.767.88$89,244
Aug 20086840114.228.48$78,126
Jul 20088200131.0811.39$107,486
Jun 20087390131.3313.03$97,053
May 20089270123.1711.57$114,179
Apr 20083470110.3110.45$38,278
Mar 20086430101.909.66$65,522
Feb 2008523092.538.77$48,393
Jan 20081,014090.388.21$91,645
Dec 2007508088.337.30$44,872
Nov 2007807091.677.29$73,978
Oct 2007855082.856.92$70,837
Sep 2007622075.846.24$47,172
Aug 2007771069.066.39$53,245
Jul 2007918070.906.39$65,086
Jun 2007690062.007.55$42,780
May 2007904058.747.85$53,101
Apr 2007809059.617.81$48,224
Mar 20071,178056.927.30$67,052
Feb 2007345055.108.22$19,010
Jan 2007744050.306.73$37,423
Dec 2006799056.656.92$45,263
Nov 2006832054.207.62$45,094
Oct 20061,245054.906.01$68,351
Sep 2006729060.085.04$43,798
Aug 20061,231068.717.34$84,582
Jul 2006763069.376.34$52,929
Jun 2006710066.286.38$47,059
May 2006887066.016.42$58,551
Apr 2006864064.397.36$55,633
Mar 2006882056.707.08$50,009
Feb 2006893057.597.75$51,428
Jan 2006849060.598.93$51,441
Dec 2005998054.9413.42$54,830
Nov 20051,066054.6910.59$58,300
Oct 2005679058.3413.80$39,613
Sep 20051,133061.4512.08$69,623
Aug 2005526061.519.80$32,354
Jul 2005798055.697.84$44,441
Jun 20051,007052.337.38$52,696
May 2005890045.226.65$40,246
Apr 2005731049.207.36$35,965
Mar 20051,225050.377.15$61,703
Feb 2005691045.226.31$31,247
Jan 2005915043.166.32$39,491
Dec 2004863039.866.75$34,399
Nov 2004859045.286.33$38,896
Oct 2004983049.706.52$48,855
Sep 2004907043.245.28$39,219
Aug 2004988042.375.55$41,862
Jul 2004924038.286.08$35,371
Jun 2004932036.106.43$33,645
May 2004942037.486.49$35,306
Apr 20041,135034.475.86$39,123
Mar 2004935034.365.53$32,127
Feb 2004943032.455.51$30,600
Jan 2004946032.036.30$30,300
Dec 2003955030.266.30$28,898
Nov 2003979028.804.60$28,195
Oct 20031,110028.174.76$31,269
Sep 2003958026.314.75$25,205
Aug 2003953029.765.13$28,361
Jul 20031,063029.415.17$31,263
Jun 20031,191028.565.98$34,015
May 20031,093026.595.97$29,063
Apr 2003785026.675.41$20,936
Mar 2003938031.146.10$29,209
Feb 2003913033.487.93$30,567
Jan 2003890030.315.58$26,976
Dec 20021,186026.914.85$31,915
Nov 2002751024.664.14$18,520
Oct 2002954026.464.23$25,243
Sep 20021,230027.443.64$33,751
Aug 20021,200025.963.16$31,152
Jul 20021,006024.583.06$24,727
Jun 20021,139023.733.34$27,028
May 20021,126024.663.58$27,767
Apr 20021,269023.653.51$30,012
Mar 2002997022.003.10$21,934
Feb 20021,318018.222.38$24,014
Jan 20021,500017.172.38$25,755
Dec 2001864016.932.36$14,628
Nov 20011,128018.072.41$20,383
Oct 20011,291019.782.53$25,536
Sep 2001967024.262.25$23,459
Aug 20011,155024.873.05$28,725
Jul 20011,126023.933.20$26,945
Jun 2001979024.563.82$24,044
May 20011,211025.524.31$30,905
Apr 2001977024.685.34$24,112
Mar 20011,268024.545.38$31,117
Feb 2001829027.755.77$23,005
Jan 20011,384027.478.40$38,018
Dec 20001,051026.889.12$28,251
Nov 20001,277032.215.66$41,132
Oct 2000912031.235.15$28,482
Sep 20001,314031.875.19$41,877
Aug 20001,561029.644.54$46,268
Jul 20001,062028.534.09$30,299
Jun 20001,316029.304.40$38,559
May 20001,126027.263.68$30,695
Apr 20001,420024.513.12$34,804
Mar 20001,120028.422.86$31,830
Feb 20001,103027.622.73$30,465
Jan 20001,011025.272.48$25,548
Dec 19991,561024.282.42$37,901
Nov 19991,328023.192.43$30,796
Oct 19991,308020.982.80$27,442
Sep 19991,335021.752.62$29,036
Aug 19991,710019.262.88$32,935
Jul 19991,563017.892.37$27,962
Jun 19991,859015.942.36$29,632
May 19991,555015.792.32$24,553
Apr 1999794015.102.21$11,989
Mar 19991,322012.471.84$16,485
Feb 199974209.981.82$7,405
Jan 1999754010.381.90$7,827
Dec 199876509.201.77$7,038
Nov 1998777010.892.19$8,462
Oct 1998955012.421.97$11,861
Sep 1998956012.592.08$12,036
Aug 19981,147011.301.91$12,961
Jul 1998947011.742.24$11,118
Jun 19981,318011.242.24$14,814
May 19981,320012.622.21$16,658
Apr 1998950013.042.51$12,388
Mar 19981,346012.802.31$17,229
Feb 19981,481013.952.30$20,660
Jan 19981,316014.702.15$19,345
Dec 19971,503016.322.41$24,529
Nov 19971,303018.193.09$23,702
Oct 19971,477019.253.15$28,432
Sep 19971,649017.742.95$29,253
Aug 19971,467017.862.55$26,201
Jul 19971,346017.582.25$23,663
Jun 19971,683017.242.26$29,015
May 19971,508018.972.31$28,607
Apr 19971,354017.882.08$24,210
Mar 19971,437018.951.94$27,231
Feb 19971,545020.492.21$31,657
Jan 19971,338023.483.54$31,416
Dec 19961,509023.32$35,190
Nov 19961,395021.97$30,648
Oct 19961,271023.31$29,627
Sep 19961,812022.22$40,263
Aug 19961,404020.26$28,445
Jul 19961,848019.55$36,128
Jun 19961,494018.73$27,983
May 19961,512019.43$29,378
Apr 19961,822021.51$39,191
Mar 19961,333019.38$25,834
Feb 19961,330016.98$22,583
Jan 19961,908017.07$32,570
Dec 19951,521017.19$26,146
Nov 19951,702016.00$27,232
Oct 19951,914015.43$29,533
Sep 19951,664016.18$26,924
Aug 19951,525015.92$24,278
Jul 19951,613015.24$24,582
Jun 19951,694016.41$27,799
May 19951,681017.56$29,518
Apr 19951,539017.73$27,286
Mar 19951,726016.44$28,375
Feb 19951,701016.58$28,203
Jan 19951,921015.92$30,582
Dec 19941,724015.03$25,912
Nov 19941,526015.90$24,263
Oct 19942,109015.58$32,858
Sep 19941,714015.29$26,207
Aug 19942,077016.13$33,502
Jul 19941,508017.56$26,480
Jun 19941,706017.09$29,156
May 19942,280015.88$36,206
Apr 19941,722014.14$24,349
Mar 19941,717012.46$21,394
Feb 19941,686012.50$21,075
Jan 19942,269012.66$28,726
Dec 19931,747112.33$21,541
Nov 19932,106114.49$30,516
Oct 19931,893115.85$30,004
Sep 19931,722115.03$25,882
Aug 19932,067115.66$32,369
Jul 19932,089115.46$32,296
Jun 19931,888116.79$31,700
May 19932,093117.68$37,004
Apr 19931,847118.05$33,338
Mar 19932,506118.14$45,459
Feb 19931,928117.90$34,511
Jan 19931,869116.93$31,642

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 2026 — as filed, then multipliedworked
Oil                  151 bbl  × $ 98.93 =    $14,938
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $14,938

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. 08/O/11428 is the state's own key, not one this site invented.