TRULOCK W. G.

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 26400District 08Field 96563001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$3.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$117 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

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
OilDisposition79,401 bbl$3,688,737
Casinghead gasProduction24 Mcf$12
Total$3,688,749

21 Mcf of this lease's gas, across 21 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 (4)

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 32.3258, -101.0749. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.6 miles.

32.32539, -101.07501 · 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
0.0%
0 of 4 wells
With a plug date
0.0%
0 of 4 wells
Median depth
3,201 ft
4 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
4100.0%

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 3,200 and 3,204 ft, median 3,201 ft, over the 4 wells that filed a depth.

Completions filed
Mar 1981 – Sep 1981
4 of 4 wells

4 wells

42-3353208543,200 ftSep 1981
42-3353202323,201 ftAug 1981
42-3353202233,200 ftJun 1981
42-3353175713,204 ftMar 1981

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 20261450106.413.05$15,429
Apr 2026158098.932.87$15,631
Mar 2026170089.753.15$15,258
Feb 2026175063.503.75$11,113
Jan 2026192059.138.00$11,353
Dec 2025159056.664.41$9,009
Nov 2025157058.593.93$9,199
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 2025153063.933.01$9,781
Jul 2025309066.743.32$20,623
Jun 20250066.483.13$0
May 2025156060.553.23$9,446
Apr 2025169062.363.54$10,539
Mar 2025156067.704.27$10,561
Feb 2025164070.884.34$11,624
Jan 20250074.324.28$0
Dec 2024159068.993.12$10,969
Nov 2024169069.052.20$11,669
Oct 2024178071.372.28$12,704
Sep 2024150069.612.36$10,442
Aug 2024161075.632.06$12,176
Jul 2024172079.932.15$13,748
Jun 2024168078.082.63$13,117
May 2024162078.812.20$12,767
Apr 2024154084.451.66$13,005
Mar 2024155080.301.55$12,447
Feb 20240076.091.78$0
Jan 2024143073.023.30$10,442
Dec 2023152071.262.61$10,832
Nov 2023160077.892.81$12,462
Oct 2023150085.443.09$12,816
Sep 2023156089.042.74$13,890
Aug 2023153080.522.67$12,320
Jul 2023150074.852.64$11,228
Jun 2023152068.962.26$10,482
May 2023153070.622.23$10,805
Apr 2023151078.122.24$11,796
Mar 2023325072.852.39$23,676
Feb 2023169075.112.47$12,694
Jan 2023152076.533.39$11,633
Dec 2022156076.415.73$11,920
Nov 2022323085.005.65$27,455
Oct 20220087.185.86$0
Sep 20223084.888.16$255
Aug 2022164094.529.13$15,501
Jul 202220101.587.54$203
Jun 20221050115.097.98$12,084
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 2022152081.844.54$12,440
Dec 20210371.323.90$12
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 2021145066.024.22$9,573
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 2021139063.483.02$8,824
Apr 2021144060.362.76$8,692
Mar 2021167061.302.72$10,237
Feb 2021150057.805.55$8,670
Jan 20212050.412.81$101
Dec 20200044.642.68$0
Nov 2020152038.772.71$5,893
Oct 20200036.972.48$0
Sep 2020151037.091.99$5,601
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 2020145034.901.69$5,061
May 20206016.921.81$102
Apr 20200014.751.80$0
Mar 2020149030.341.86$4,521
Feb 20200049.881.98$0
Jan 2020154057.252.09$8,817
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 2019188053.472.42$10,052
Sep 20190055.052.66$0
Aug 2019192053.112.30$10,197
Jul 20190056.272.46$0
Jun 2019153052.782.49$8,075
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 2019165056.803.06$9,372
Feb 20190050.852.79$0
Jan 2019164046.033.23$7,549
Dec 20180046.594.19$0
Nov 2018172052.934.24$9,104
Oct 20180061.443.40$0
Sep 2018159059.543.11$9,467
Aug 20180059.403.07$0
Jul 2018175065.142.93$11,400
Jun 20180060.183.08$0
May 2018152065.382.90$9,938
Apr 20182063.842.90$128
Mar 2018149061.222.79$9,122
Feb 20180061.782.77$0
Jan 2018160062.874.01$10,059
Dec 20170057.272.92$0
Nov 2017155055.423.12$8,590
Oct 2017154049.292.98$7,591
Sep 20170047.523.09$0
Aug 2017154045.373.00$6,987
Jul 2017156043.873.09$6,844
Jun 2017172042.493.09$7,308
May 2017154045.373.26$6,987
Apr 2017158047.933.21$7,573
Mar 2017159046.772.98$7,436
Feb 2017154050.452.95$7,769
Jan 2017155049.413.42$7,659
Dec 2016154048.763.72$7,509
Nov 2016168042.492.64$7,138
Oct 2016311046.193.09$14,365
Sep 2016158041.553.10$6,565
Aug 2016164041.442.92$6,796
Jul 2016332041.622.92$13,818
Jun 20167045.352.69$317
May 2016157042.521.99$6,676
Apr 2016322036.561.99$11,772
Mar 20160033.011.79$0
Feb 2016158026.472.06$4,182
Jan 2016325027.352.36$8,889
Dec 2015156032.362.00$5,048
Nov 2015160038.792.17$6,206
Oct 2015158043.552.43$6,881
Sep 2015175042.992.76$7,523
Aug 2015158040.162.87$6,345
Jul 2015318048.152.95$15,312
Jun 2015161056.152.88$9,040
May 2015167055.212.96$9,220
Apr 2015165049.822.71$8,220
Mar 2015159042.892.93$6,820
Feb 2015161044.662.98$7,190
Jan 2015163043.433.10$7,079
Dec 2014153054.693.59$8,368
Nov 2014160070.464.25$11,274
Oct 2014308078.303.90$24,116
Sep 2014156086.164.05$13,441
Aug 2014160089.394.04$14,302
Jul 2014165096.564.18$15,932
Jun 2014158098.164.74$15,509
May 2014314094.734.73$29,745
Apr 2014155095.944.81$14,871
Mar 2014155095.895.06$14,863
Feb 2014318097.406.19$30,973
Jan 2014156090.404.86$14,102
Dec 2013154091.824.35$14,140
Nov 2013161088.853.74$14,305
Oct 2013151097.423.78$14,710
Sep 20131530104.113.72$15,929
Aug 20133120104.253.52$32,526
Jul 20131620102.523.72$16,608
Jun 2013164094.403.93$15,482
May 2013163094.834.15$15,457
Apr 2013153093.964.28$14,376
Mar 2013313093.623.91$29,303
Feb 2013157091.233.42$14,323
Jan 2013159091.603.42$14,564
Dec 2012153086.773.42$13,276
Nov 2012310086.953.62$26,955
Oct 20122089.383.40$179
Sep 2012158094.672.92$14,958
Aug 2012155092.662.91$14,362
Jul 2012302085.133.02$25,709
Jun 2012157079.822.52$12,532
May 2012308091.612.49$28,216
Apr 20121550101.652.00$15,756
Mar 20121570105.052.22$16,493
Feb 20121540101.102.57$15,569
Jan 2012316098.092.73$30,996
Dec 2011152096.873.24$14,724
Nov 2011160095.723.31$15,315
Oct 2011313084.983.65$26,599
Sep 2011150083.623.99$12,543
Aug 2011155083.404.15$12,927
Jul 2011308094.144.52$28,995
Jun 2011152092.904.64$14,121
May 2011168098.134.40$16,486
Apr 20113010105.964.33$31,894
Mar 2011160096.364.06$15,418
Feb 2011155085.644.18$13,274
Jan 2011314086.504.59$27,161
Dec 2010160085.734.35$13,717
Nov 2010154080.843.80$12,449
Oct 2010318078.103.51$24,836
Sep 2010151072.633.98$10,967
Aug 2010157073.684.42$11,568
Jul 2010224072.554.74$16,251
Jun 2010151070.364.91$10,624
May 2010305071.124.24$21,692
Apr 2010157081.694.12$12,825
Mar 2010314078.394.39$24,614
Feb 20100073.585.44$0
Jan 2010169074.365.96$12,567
Dec 2009170071.445.48$12,145
Nov 2009158074.593.75$11,785
Oct 2009149072.544.11$10,808
Sep 2009315065.543.06$20,645
Aug 2009158067.423.22$10,652
Jul 2009159061.133.46$9,720
Jun 2009184066.163.90$12,173
May 2009148054.743.93$8,102
Apr 2009157046.773.59$7,343
Mar 2009166042.144.06$6,995
Feb 2009156032.814.63$5,118
Jan 2009307035.865.37$11,009
Dec 2008152037.105.98$5,639
Nov 2008312055.496.86$17,313
Oct 2008156075.246.92$11,737
Sep 20081490101.767.88$15,162
Aug 20083120114.228.48$35,637
Jul 20083050131.0811.39$39,979
Jun 200800131.3313.03$0
May 20083020123.1711.57$37,197
Apr 20081530110.3110.45$16,877
Mar 20081520101.909.66$15,489
Feb 2008298092.538.77$27,574
Jan 2008152090.388.21$13,738
Dec 2007301088.337.30$26,587
Nov 2007150091.677.29$13,751
Oct 2007150082.856.92$12,428
Sep 2007297075.846.24$22,524
Aug 2007150069.066.39$10,359
Jul 2007603070.906.39$42,753
Jun 20070062.007.55$0
May 2007149058.747.85$8,752
Apr 2007148059.617.81$8,822
Mar 2007153056.927.30$8,709
Feb 2007163055.108.22$8,981
Jan 2007304050.306.73$15,291
Dec 2006150056.656.92$8,498
Nov 2006298054.207.62$16,152
Oct 2006298054.906.01$16,360
Sep 20060060.085.04$0
Aug 2006153068.717.34$10,513
Jul 2006290069.376.34$20,117
Jun 2006148066.286.38$9,809
May 2006292066.016.42$19,275
Apr 2006151064.397.36$9,723
Mar 2006294056.707.08$16,670
Feb 2006152057.597.75$8,754
Jan 2006148060.598.93$8,967
Dec 2005457054.9413.42$25,108
Nov 2005152054.6910.59$8,313
Oct 2005308058.3413.80$17,969
Sep 2005152061.4512.08$9,340
Aug 2005288061.519.80$17,715
Jul 2005152055.697.84$8,465
Jun 2005298052.337.38$15,594
May 2005155045.226.65$7,009
Apr 2005157049.207.36$7,724
Mar 2005299050.377.15$15,061
Feb 2005150045.226.31$6,783
Jan 2005289043.166.32$12,473
Dec 2004302039.866.75$12,038
Nov 2004148045.286.33$6,701
Oct 2004155049.706.52$7,704
Sep 2004143043.245.28$6,183
Aug 2004303042.375.55$12,838
Jul 2004150038.286.08$5,742
Jun 2004292036.106.43$10,541
May 2004148037.486.49$5,547
Apr 2004306034.475.86$10,548
Mar 2004308034.365.53$10,583
Feb 2004157032.455.51$5,095
Jan 2004175032.036.30$5,605
Dec 2003323030.266.30$9,774
Nov 2003312028.804.60$8,986
Oct 2003152028.174.76$4,282
Sep 2003297026.314.75$7,814
Aug 2003153029.765.13$4,553
Jul 2003317029.415.17$9,323
Jun 2003315028.565.98$8,996
May 2003151026.595.97$4,015
Apr 2003307026.675.41$8,188
Mar 2003161031.146.10$5,014
Feb 2003342033.487.93$11,450
Jan 2003180030.315.58$5,456
Dec 2002372026.914.85$10,011
Nov 2002177024.664.14$4,365
Oct 2002336026.464.23$8,891
Sep 2002179027.443.64$4,912
Aug 2002345025.963.16$8,956
Jul 2002168024.583.06$4,129
Jun 2002349023.733.34$8,282
May 2002171024.663.58$4,217
Apr 2002353023.653.51$8,348
Mar 2002354022.003.10$7,788
Feb 2002193018.222.38$3,516
Jan 2002366017.172.38$6,284
Dec 2001354016.932.36$5,993
Nov 2001181018.072.41$3,271
Oct 2001350019.782.53$6,923
Sep 2001169024.262.25$4,100
Aug 2001322024.873.05$8,008
Jul 2001325023.933.20$7,777
Jun 2001346024.563.82$8,498
May 2001171025.524.31$4,364
Apr 2001359024.685.34$8,860
Mar 2001349024.545.38$8,564
Feb 2001332027.755.77$9,213
Jan 2001380027.478.40$10,439
Dec 2000384026.889.12$10,322
Nov 2000323032.215.66$10,404
Oct 2000362031.235.15$11,305
Sep 2000332031.875.19$10,581
Aug 2000332029.644.54$9,840
Jul 2000362028.534.09$10,328
Jun 2000371029.304.40$10,870
May 2000317027.263.68$8,641
Apr 2000530024.513.12$12,990
Mar 2000307028.422.86$8,725
Feb 2000160027.622.73$4,419
Jan 2000353025.272.48$8,920
Dec 19990024.282.42$0
Nov 1999159023.192.43$3,687
Oct 1999158020.982.80$3,315
Sep 1999176021.752.62$3,828
Aug 19990019.262.88$0
Jul 1999181017.892.37$3,238
Jun 1999188015.942.36$2,997
May 1999157015.792.32$2,479
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 199822509.201.77$2,070
Nov 19980010.892.19$0
Oct 1998158012.421.97$1,962
Sep 1998155012.592.08$1,951
Aug 19980011.301.91$0
Jul 1998150011.742.24$1,761
Jun 1998155011.242.24$1,742
May 19980012.622.21$0
Apr 1998151013.042.51$1,969
Mar 1998165012.802.31$2,112
Feb 19980013.952.30$0
Jan 1998311014.702.15$4,572
Dec 1997308016.322.41$5,027
Nov 1997155018.193.09$2,819
Oct 1997125019.253.15$2,406
Sep 1997311017.742.95$5,517
Aug 1997306017.862.55$5,465
Jul 1997305017.582.25$5,362
Jun 1997304017.242.26$5,241
May 1997465018.972.31$8,821
Apr 1997158017.882.08$2,825
Mar 1997309018.951.94$5,856
Feb 1997312020.492.21$6,393
Jan 1997304023.483.54$7,138
Dec 1996327023.32$7,626
Nov 1996266021.97$5,844
Oct 1996312023.31$7,273
Sep 1996303022.22$6,733
Aug 1996415020.26$8,408
Jul 1996305019.55$5,963
Jun 1996142018.73$2,660
May 1996312019.43$6,062
Apr 1996325021.51$6,991
Mar 1996339019.38$6,570
Feb 1996338016.98$5,739
Jan 1996342017.07$5,838
Dec 1995314017.19$5,398
Nov 1995342016.00$5,472
Oct 1995168015.43$2,592
Sep 1995315016.18$5,097
Aug 1995490015.92$7,801
Jul 1995340015.24$5,182
Jun 1995323016.41$5,300
May 1995327017.56$5,742
Apr 1995326017.73$5,780
Mar 1995338016.44$5,557
Feb 1995328016.58$5,438
Jan 1995520015.92$8,278
Dec 1994334015.03$5,020
Nov 1994342015.90$5,438
Oct 1994335015.58$5,219
Sep 1994350115.29$5,352
Aug 1994333116.13$5,371
Jul 1994316117.56$5,549
Jun 1994475117.09$8,118
May 1994335115.88$5,320
Apr 1994319114.14$4,511
Mar 1994339112.46$4,224
Feb 1994271112.50$3,388
Jan 1994326112.66$4,127
Dec 1993504112.33$6,214
Nov 1993307114.49$4,448
Oct 1993499115.85$7,909
Sep 1993321115.03$4,825
Aug 1993437115.66$6,843
Jul 1993307115.46$4,746
Jun 1993301116.79$5,054
May 1993446117.68$7,885
Apr 1993313118.05$5,650
Mar 1993336118.14$6,095
Feb 1993467117.90$8,359
Jan 1993320116.93$5,418

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                  145 bbl  × $106.41 =    $15,429
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $15,429

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/26400 is the state's own key, not one this site invented.