TROELL, C. T.

Operated by MAZCO ENERGY LLC (P-5 537025) in the PLEASANTON, S. (CARRIZO SAND) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 1385District 01Field 71926250OilCasinghead gasSaveExport
Value, all time
$6.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$216 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 14 leases and 38 wells, and the rule below applies to all of them.

Discovered
1952-07-22
as the register files it
Field class
Oil
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 10 acres.

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
OilDisposition153,981 bbl$6,839,761
Casinghead gasProduction21 Mcf$0
Total$6,839,761

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 (7)

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 28.9038, -98.4225. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

28.90366, -98.42368 · 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
14.3%
1 of 7 wells
With a plug date
0.0%
0 of 7 wells
Median depth
694 ft
1 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
114.3%
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.
685.7%

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

The one well that filed a depth was drilled to 694 ft.

Completions filed
Feb 1960
1 of 7 wells; 6 filed none

7 wells

42-013801981Yes
42-013010872
42-013010883
42-013010894
42-013010905
42-013011026
42-013010857694 ftFeb 1960

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 20261360106.413.05$14,472
Apr 2026288098.932.87$28,492
Mar 2026143089.753.15$12,834
Feb 2026295063.503.75$18,733
Jan 2026290059.138.00$17,148
Dec 2025293056.664.41$16,601
Nov 2025147058.593.93$8,613
Oct 2025441059.383.30$26,187
Sep 2025706062.743.08$44,294
Aug 20250063.933.01$0
Jul 2025147066.743.32$9,811
Jun 2025282066.483.13$18,747
May 2025279060.553.23$16,893
Apr 2025281062.363.54$17,523
Mar 2025433067.704.27$29,314
Feb 2025137070.884.34$9,711
Jan 2025284074.324.28$21,107
Dec 2024280068.993.12$19,317
Nov 2024281069.052.20$19,403
Oct 2024283071.372.28$20,198
Sep 2024435069.612.36$30,280
Aug 2024430075.632.06$32,521
Jul 2024291079.932.15$23,260
Jun 2024291078.082.63$22,721
May 2024286078.812.20$22,540
Apr 2024291084.451.66$24,575
Mar 2024279080.301.55$22,404
Feb 2024437076.091.78$33,251
Jan 2024291073.023.30$21,249
Dec 2023288071.262.61$20,523
Nov 2023297077.892.81$23,133
Oct 2023285085.443.09$24,350
Sep 2023290089.042.74$25,822
Aug 2023147080.522.67$11,836
Jul 2023280074.852.64$20,958
Jun 2023297068.962.26$20,481
May 2023293070.622.23$20,692
Apr 2023304078.122.24$23,748
Mar 2023302072.852.39$22,001
Feb 2023436075.112.47$32,748
Jan 2023145076.533.39$11,097
Dec 2022434076.415.73$33,162
Nov 2022297085.005.65$25,245
Oct 2022291087.185.86$25,369
Sep 2022349084.888.16$29,623
Aug 2022297094.529.13$28,072
Jul 20224400101.587.54$44,695
Jun 20224420115.097.98$50,870
May 20224560109.378.43$49,873
Apr 20222670104.226.84$27,827
Mar 20222940108.885.08$32,011
Feb 2022423091.054.86$38,514
Jan 2022287081.844.54$23,488
Dec 2021435071.323.90$31,024
Nov 2021301077.435.24$23,306
Oct 2021438079.795.71$34,948
Sep 2021302069.865.35$21,098
Aug 20210066.024.22$0
Jul 2021295070.783.98$20,880
Jun 2021288069.493.38$20,013
May 2021145063.483.02$9,205
Apr 2021438060.362.76$26,438
Mar 2021145061.302.72$8,889
Feb 2021147057.805.55$8,497
Jan 2021289050.412.81$14,568
Dec 2020143044.642.68$6,384
Nov 2020147038.772.71$5,699
Oct 2020412036.972.48$15,232
Sep 2020434037.091.99$16,097
Aug 2020308039.982.39$12,314
Jul 2020875038.371.83$33,574
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 2020144014.751.80$2,124
Mar 2020456030.341.86$13,835
Feb 2020288049.881.98$14,365
Jan 2020443057.252.09$25,362
Dec 2019301059.012.30$17,762
Nov 2019309055.302.75$17,088
Oct 2019441053.472.42$23,580
Sep 2019298055.052.66$16,405
Aug 2019145053.112.30$7,701
Jul 2019145056.272.46$8,159
Jun 2019144052.782.49$7,600
May 2019296058.482.74$17,310
Apr 2019289062.632.75$18,100
Mar 2019287056.803.06$16,302
Feb 2019284050.852.79$14,441
Jan 2019285046.033.23$13,119
Dec 2018434046.594.19$20,220
Nov 2018142052.934.24$7,516
Oct 20180061.443.40$0
Sep 2018160059.543.11$9,526
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
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 2016150036.561.99$5,484
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 2015147038.792.17$5,702
Oct 20150043.552.43$0
Sep 2015138042.992.76$5,933
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 2015146055.212.96$8,061
Apr 2015149049.822.71$7,423
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 2014141054.693.59$7,711
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 2014152089.394.04$13,587
Jul 2014144096.564.18$13,905
Jun 20140098.164.74$0
May 2014298094.734.73$28,230
Apr 2014294095.944.81$28,206
Mar 2014149095.895.06$14,288
Feb 2014286097.406.19$27,856
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 2013148088.853.74$13,150
Oct 2013147097.423.78$14,321
Sep 20132850104.113.72$29,671
Aug 20131510104.253.52$15,742
Jul 20133020102.523.72$30,961
Jun 2013296094.403.93$27,942
May 2013431094.834.15$40,872
Apr 2013150093.964.28$14,094
Mar 2013421093.623.91$39,414
Feb 2013139091.233.42$12,681
Jan 2013149091.603.42$13,648
Dec 2012296086.773.42$25,684
Nov 2012145086.953.62$12,608
Oct 2012300089.383.40$26,814
Sep 2012158094.672.92$14,958
Aug 2012596092.662.91$55,225
Jul 2012152085.133.02$12,940
Jun 2012152079.822.52$12,133
May 2012298091.612.49$27,300
Apr 20123010101.652.00$30,597
Mar 20122890105.052.22$30,359
Feb 20122910101.102.57$29,420
Jan 2012298098.092.73$29,231
Dec 2011150096.873.24$14,531
Nov 2011294095.723.31$28,142
Oct 2011293084.983.65$24,899
Sep 2011151083.623.99$12,627
Aug 2011288083.404.15$24,019
Jul 2011429094.144.52$40,386
Jun 2011298092.904.64$27,684
May 2011291098.134.40$28,556
Apr 20114480105.964.33$47,470
Mar 2011286096.364.06$27,559
Feb 2011142085.644.18$12,161
Jan 2011562086.504.59$48,613
Dec 2010288085.734.35$24,690
Nov 2010425080.843.80$34,357
Oct 2010429078.103.51$33,505
Sep 2010428072.633.98$31,086
Aug 2010425073.684.42$31,314
Jul 2010428072.554.74$31,051
Jun 2010426070.364.91$29,973
May 2010425071.124.24$30,226
Apr 2010418081.694.12$34,146
Mar 2010571078.394.39$44,761
Feb 2010279073.585.44$20,529
Jan 2010428074.365.96$31,826
Dec 2009428071.445.48$30,576
Nov 2009284074.593.75$21,184
Oct 2009425072.544.11$30,830
Sep 2009426065.543.06$27,920
Aug 2009423067.423.22$28,519
Jul 2009424061.133.46$25,919
Jun 2009425066.163.90$28,118
May 2009427054.743.93$23,374
Apr 2009564046.773.59$26,378
Mar 2009424042.144.06$17,867
Feb 2009423032.814.63$13,879
Jan 2009578035.865.37$20,727
Dec 2008414037.105.98$15,359
Nov 2008287055.496.86$15,926
Oct 2008572075.246.92$43,037
Sep 20084270101.767.88$43,452
Aug 20084270114.228.48$48,772
Jul 20084360131.0811.39$57,151
Jun 20084340131.3313.03$56,997
May 20084280123.1711.57$52,717
Apr 20084320110.3110.45$47,654
Mar 20084340101.909.66$44,225
Feb 2008439092.538.77$40,621
Jan 2008440090.388.21$39,767
Dec 2007445088.337.30$39,307
Nov 2007441091.677.29$40,426
Oct 2007438082.856.92$36,288
Sep 2007443075.846.24$33,597
Aug 2007444069.066.39$30,663
Jul 2007453070.906.39$32,118
Jun 2007439062.007.55$27,218
May 2007444058.747.85$26,081
Apr 2007435059.617.81$25,930
Mar 2007440056.927.30$25,045
Feb 2007450055.108.22$24,795
Jan 2007445050.306.73$22,384
Dec 2006443056.656.92$25,096
Nov 2006444054.207.62$24,065
Oct 2006301054.906.01$16,525
Sep 2006299060.085.04$17,964
Aug 2006448068.717.34$30,782
Jul 2006443069.376.34$30,731
Jun 2006446066.286.38$29,561
May 2006444066.016.42$29,308
Apr 2006301064.397.36$19,381
Mar 2006596056.707.08$33,793
Feb 2006292057.597.75$16,816
Jan 2006446060.598.93$27,023
Dec 2005445054.9413.42$24,448
Nov 2005446054.6910.59$24,392
Oct 2005440058.3413.80$25,670
Sep 2005445061.4512.08$27,345
Aug 2005448061.519.80$27,556
Jul 2005596055.697.84$33,191
Jun 2005446052.337.38$23,339
May 2005459045.226.65$20,756
Apr 2005595049.207.36$29,274
Mar 2005456050.377.15$22,969
Feb 2005451045.226.31$20,394
Jan 2005452043.166.32$19,508
Dec 2004453039.866.75$18,057
Nov 2004606045.286.33$27,440
Oct 2004454049.706.52$22,564
Sep 2004600043.245.28$25,944
Aug 2004303042.375.55$12,838
Jul 2004453038.286.08$17,341
Jun 2004752036.106.43$27,147
May 2004302037.486.49$11,319
Apr 2004443034.475.86$15,270
Mar 2004601034.365.53$20,650
Feb 20041,339032.455.51$43,451
Jan 2004296032.036.30$9,481
Dec 20030030.266.30$0
Nov 2003300028.804.60$8,640
Oct 2003590028.174.76$16,620
Sep 2003601026.314.75$15,812
Aug 2003742029.765.13$22,082
Jul 2003735029.415.17$21,616
Jun 2003142028.565.98$4,056
May 2003576026.595.97$15,316
Apr 2003594026.675.41$15,842
Mar 2003599031.146.10$18,653
Feb 2003882033.487.93$29,529
Jan 2003436030.315.58$13,215
Dec 2002145026.914.85$3,902
Nov 2002582024.664.14$14,352
Oct 2002592026.464.23$15,664
Sep 2002447027.443.64$12,266
Aug 2002589025.963.16$15,290
Jul 2002582024.583.06$14,306
Jun 2002586023.733.34$13,906
May 2002578024.663.58$14,253
Apr 2002584023.653.51$13,812
Mar 2002586022.003.10$12,892
Feb 2002580018.222.38$10,568
Jan 2002440017.172.38$7,555
Dec 2001581016.932.36$9,836
Nov 2001434018.072.41$7,842
Oct 2001587019.782.53$11,611
Sep 2001435024.262.25$10,553
Aug 2001715024.873.05$17,782
Jul 2001434023.933.20$10,386
Jun 2001589024.563.82$14,466
May 2001607025.524.31$15,491
Apr 2001596024.685.34$14,709
Mar 2001600024.545.38$14,724
Feb 2001586027.755.77$16,262
Jan 2001455027.478.40$12,499
Dec 2000446026.889.12$11,988
Nov 2000739032.215.66$23,803
Oct 2000535031.235.15$16,708
Sep 2000592031.875.19$18,867
Aug 2000590029.644.54$17,488
Jul 2000602028.534.09$17,175
Jun 2000722029.304.40$21,155
May 2000586027.263.68$15,974
Apr 2000722024.513.12$17,696
Mar 20001,023028.422.86$29,074
Feb 20001,032027.622.73$28,504
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 1999447021.752.62$9,722
Aug 1999591019.262.88$11,383
Jul 1999577017.892.37$10,323
Jun 1999434015.942.36$6,918
May 1999579015.792.32$9,142
Apr 1999574015.102.21$8,667
Mar 1999593012.471.84$7,395
Feb 199958509.981.82$5,838
Jan 1999444010.381.90$4,609
Dec 199844509.201.77$4,094
Nov 1998730010.892.19$7,950
Oct 1998583012.421.97$7,241
Sep 1998597012.592.08$7,516
Aug 1998607011.301.91$6,859
Jul 1998445011.742.24$5,224
Jun 1998611011.242.24$6,868
May 1998605012.622.21$7,635
Apr 1998600013.042.51$7,824
Mar 1998597012.802.31$7,642
Feb 1998591013.952.30$8,244
Jan 1998584014.702.15$8,585
Dec 1997604016.322.41$9,857
Nov 1997599018.193.09$10,896
Oct 1997613019.253.15$11,800
Sep 1997761017.742.95$13,500
Aug 1997750017.862.55$13,395
Jul 1997471017.582.25$8,280
Jun 1997728017.242.26$12,551
May 1997613018.972.31$11,629
Apr 1997458017.882.08$8,189
Mar 1997602018.951.94$11,408
Feb 1997764020.492.21$15,654
Jan 1997625023.483.54$14,675
Dec 1996617023.32$14,388
Nov 1996618021.97$13,577
Oct 1996612023.31$14,266
Sep 1996624022.22$13,865
Aug 1996605020.26$12,257
Jul 1996460019.55$8,993
Jun 1996768018.73$14,385
May 1996620019.43$12,047
Apr 1996632021.51$13,594
Mar 1996629019.38$12,190
Feb 1996635016.98$10,782
Jan 1996781017.07$13,332
Dec 1995611017.19$10,503
Nov 1995613016.00$9,808
Oct 1995616015.43$9,505
Sep 1995619016.18$10,015
Aug 1995776015.92$12,354
Jul 1995609015.24$9,281
Jun 1995756016.41$12,406
May 1995611017.56$10,729
Apr 1995758017.73$13,439
Mar 1995595016.44$9,782
Feb 1995613016.58$10,164
Jan 1995613015.92$9,759
Dec 1994753015.03$11,318
Nov 1994606015.90$9,635
Oct 1994607015.58$9,457
Sep 1994757115.29$11,575
Aug 1994761116.13$12,275
Jul 1994604117.56$10,606
Jun 1994612117.09$10,459
May 1994644115.88$10,227
Apr 1994601114.14$8,498
Mar 1994757112.46$9,432
Feb 1994600112.50$7,500
Jan 1994757112.66$9,584
Dec 1993596112.33$7,349
Nov 1993617114.49$8,940
Oct 1993628115.85$9,954
Sep 1993758115.03$11,393
Aug 1993607115.66$9,506
Jul 1993603115.46$9,322
Jun 1993603116.79$10,124
May 1993901117.68$15,930
Apr 1993589118.05$10,631
Mar 1993602118.14$10,920
Feb 1993620117.90$11,098
Jan 1993760116.93$12,867

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                  136 bbl  × $106.41 =    $14,472
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $14,472

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. 01/O/1385 is the state's own key, not one this site invented.