TROELL, CHAS. 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 1380District 01Field 71926250OilCasinghead gasSaveExport
Value, all time
$597 k
Jan 1993 – May 2026
Value, last 12 filed months
$9 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
OilDisposition9,503 bbl$596,736
Casinghead gasProduction21 Mcf$0
Total$596,736

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 28.9039, -98.4289. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

28.90406, -98.42828 · 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
75.0%
3 of 4 wells
With a plug date
75.0%
3 of 4 wells
Median depth
1,880 ft
3 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
375.0%
A plug date is filed
375.0%
BothOn the schedule and plugged. Neither fact cancels the other.
375.0%
NeitherNo plug date, and not on the schedule.
125.0%

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 1,863 and 1,880 ft, median 1,880 ft, over the 3 wells that filed a depth.

Plug dates filed
Feb 1985 – Feb 2012
3 of 4 wells; 1 filed none

4 wells

42-0130109411,880 ftFeb 1985Yes
42-0130109521,863 ftFeb 1988Yes
42-0133039151,880 ftFeb 2012Yes
42-013010963

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 2026130106.413.05$1,383
Apr 20269098.932.87$890
Mar 20269089.753.15$808
Feb 202613063.503.75$826
Jan 20269059.138.00$532
Dec 20258056.664.41$453
Nov 20259058.593.93$527
Oct 202513059.383.30$772
Sep 20259062.743.08$565
Aug 202513063.933.01$831
Jul 20259066.743.32$601
Jun 20259066.483.13$598
May 20258060.553.23$484
Apr 20259062.363.54$561
Mar 202513067.704.27$880
Feb 20259070.884.34$638
Jan 202513074.324.28$966
Dec 202413068.993.12$897
Nov 20249069.052.20$621
Oct 20249071.372.28$642
Sep 202413069.612.36$905
Aug 202412075.632.06$908
Jul 202413079.932.15$1,039
Jun 202413078.082.63$1,015
May 202417078.812.20$1,340
Apr 20249084.451.66$760
Mar 20249080.301.55$723
Feb 202412076.091.78$913
Jan 202413073.023.30$949
Dec 20239071.262.61$641
Nov 20238077.892.81$623
Oct 20239085.443.09$769
Sep 20234089.042.74$356
Aug 20239080.522.67$725
Jul 202313074.852.64$973
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20234078.122.24$312
Mar 20234072.852.39$291
Feb 20234075.112.47$300
Jan 20234076.533.39$306
Dec 20224076.415.73$306
Nov 20220085.005.65$0
Oct 20225087.185.86$436
Sep 20224084.888.16$340
Aug 20225094.529.13$473
Jul 202290101.587.54$914
Jun 202250115.097.98$575
May 2022130109.378.43$1,422
Apr 202240104.226.84$417
Mar 202290108.885.08$980
Feb 20229091.054.86$819
Jan 20229081.844.54$737
Dec 20219071.323.90$642
Nov 20214077.435.24$310
Oct 202114079.795.71$1,117
Sep 20210069.865.35$0
Aug 20214066.024.22$264
Jul 20214070.783.98$283
Jun 20215069.493.38$347
May 20214063.483.02$254
Apr 20215060.362.76$302
Mar 20214061.302.72$245
Feb 20215057.805.55$289
Jan 20215050.412.81$252
Dec 20204044.642.68$179
Nov 20204038.772.71$155
Oct 20204036.972.48$148
Sep 20209037.091.99$334
Aug 20205039.982.39$200
Jul 202018038.371.83$691
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20205014.751.80$74
Mar 20209030.341.86$273
Feb 20209049.881.98$449
Jan 20209057.252.09$515
Dec 20199059.012.30$531
Nov 20194055.302.75$221
Oct 20199053.472.42$481
Sep 201913055.052.66$716
Aug 20198053.112.30$425
Jul 20199056.272.46$506
Jun 20199052.782.49$475
May 20199058.482.74$526
Apr 20199062.632.75$564
Mar 20199056.803.06$511
Feb 20194050.852.79$203
Jan 201913046.033.23$598
Dec 20185046.594.19$233
Nov 20189052.934.24$476
Oct 20189061.443.40$553
Sep 201814059.543.11$834
Aug 20189059.403.07$535
Jul 201814065.142.93$912
Jun 20189060.183.08$542
May 201814065.382.90$915
Apr 20189063.842.90$575
Mar 20189061.222.79$551
Feb 20189061.782.77$556
Jan 20189062.874.01$566
Dec 20179057.272.92$515
Nov 20175055.423.12$277
Oct 20179049.292.98$444
Sep 20179047.523.09$428
Aug 20179045.373.00$408
Jul 201713043.873.09$570
Jun 201721042.493.09$892
May 201732045.373.26$1,452
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 201721049.413.42$1,038
Dec 201622048.763.72$1,073
Nov 201643042.492.64$1,827
Oct 201620046.193.09$924
Sep 201631041.553.10$1,288
Aug 201621041.442.92$870
Jul 201632041.622.92$1,332
Jun 201621045.352.69$952
May 201630042.521.99$1,276
Apr 201632036.561.99$1,170
Mar 201631033.011.79$1,023
Feb 201610026.472.06$265
Jan 201630027.352.36$821
Dec 201520032.362.00$647
Nov 201532038.792.17$1,241
Oct 201531043.552.43$1,350
Sep 201520042.992.76$860
Aug 201530040.162.87$1,205
Jul 201532048.152.95$1,541
Jun 201530056.152.88$1,685
May 201531055.212.96$1,712
Apr 201520049.822.71$996
Mar 201531042.892.93$1,330
Feb 201521044.662.98$938
Jan 201531043.433.10$1,346
Dec 201431054.693.59$1,695
Nov 20140070.464.25$0
Oct 201440078.303.90$3,132
Sep 201440086.164.05$3,446
Aug 201420089.394.04$1,788
Jul 201431096.564.18$2,993
Jun 201422098.164.74$2,160
May 201421094.734.73$1,989
Apr 201432095.944.81$3,070
Mar 201432095.895.06$3,068
Feb 201431097.406.19$3,019
Jan 201421090.404.86$1,898
Dec 201340091.824.35$3,673
Nov 201331088.853.74$2,754
Oct 201330097.423.78$2,923
Sep 2013410104.113.72$4,269
Aug 2013290104.253.52$3,023
Jul 2013220102.523.72$2,255
Jun 201329094.403.93$2,738
May 201316094.834.15$1,517
Apr 201322093.964.28$2,067
Mar 201315093.623.91$1,404
Feb 201386091.233.42$7,846
Jan 201392091.603.42$8,427
Dec 201270086.773.42$6,074
Nov 201273086.953.62$6,347
Oct 201271089.383.40$6,346
Sep 201236094.672.92$3,408
Aug 2012107092.662.91$9,915
Jul 201272085.133.02$6,129
Jun 201236079.822.52$2,874
May 201273091.612.49$6,688
Apr 20121370101.652.00$13,926
Mar 2012730105.052.22$7,669
Feb 20121070101.102.57$10,818
Jan 2012104098.092.73$10,201
Dec 201172096.873.24$6,975
Nov 2011103095.723.31$9,859
Oct 2011104084.983.65$8,838
Sep 2011105083.623.99$8,780
Aug 2011106083.404.15$8,840
Jul 2011103094.144.52$9,696
Jun 2011137092.904.64$12,727
May 2011177098.134.40$17,369
Apr 2011900105.964.33$9,536
Mar 2011170096.364.06$16,381
Feb 2011130085.644.18$11,133
Jan 201195086.504.59$8,218
Dec 2010172085.734.35$14,746
Nov 2010129080.843.80$10,428
Oct 2010218078.103.51$17,026
Sep 2010129072.633.98$9,369
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 201042071.124.24$2,987
Apr 201021081.694.12$1,715
Mar 201086078.394.39$6,742
Feb 201042073.585.44$3,090
Jan 201043074.365.96$3,197
Dec 200942071.445.48$3,000
Nov 200944074.593.75$3,282
Oct 200943072.544.11$3,119
Sep 200943065.543.06$2,818
Aug 200980067.423.22$5,394
Jul 200964061.133.46$3,912
Jun 200965066.163.90$4,300
May 200986054.743.93$4,708
Apr 200921046.773.59$982
Mar 200928042.144.06$1,180
Feb 200943032.814.63$1,411
Jan 200945035.865.37$1,614
Dec 200842037.105.98$1,558
Nov 200843055.496.86$2,386
Oct 200864075.246.92$4,815
Sep 2008250101.767.88$2,544
Aug 2008350114.228.48$3,998
Jul 2008210131.0811.39$2,753
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 2008300110.3110.45$3,309
Mar 2008310101.909.66$3,159
Feb 200831092.538.77$2,868
Jan 200831090.388.21$2,802
Dec 200730088.337.30$2,650
Nov 200760091.677.29$5,500
Oct 200731082.856.92$2,568
Sep 200710075.846.24$758
Aug 200714069.066.39$967
Jul 200731070.906.39$2,198
Jun 200760062.007.55$3,720
May 200731058.747.85$1,821
Apr 200761059.617.81$3,636
Mar 20070056.927.30$0
Feb 200759055.108.22$3,251
Jan 20070050.306.73$0
Dec 200631056.656.92$1,756
Nov 200630054.207.62$1,626
Oct 200632054.906.01$1,757
Sep 200635060.085.04$2,103
Aug 200632068.717.34$2,199
Jul 200631069.376.34$2,150
Jun 200632066.286.38$2,121
May 200632066.016.42$2,112
Apr 200630064.397.36$1,932
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 200530054.9413.42$1,648
Nov 200530054.6910.59$1,641
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
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 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 19980012.622.21$0
Apr 19980013.042.51$0
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 19970017.742.95$0
Aug 19970017.862.55$0
Jul 199712017.582.25$211
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 19970023.483.54$0
Dec 19960023.32$0
Nov 19960021.97$0
Oct 19960023.31$0
Sep 19960022.22$0
Aug 19960020.26$0
Jul 19960019.55$0
Jun 19960018.73$0
May 19960019.43$0
Apr 19960021.51$0
Mar 19960019.38$0
Feb 19960016.98$0
Jan 19960017.07$0
Dec 19950017.19$0
Nov 19950016.00$0
Oct 19950015.43$0
Sep 19950016.18$0
Aug 19950015.92$0
Jul 19950015.24$0
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950016.44$0
Feb 19950016.58$0
Jan 19950015.92$0
Dec 19940015.03$0
Nov 19940015.90$0
Oct 19940015.58$0
Sep 1994191115.29$2,920
Aug 19940116.13$0
Jul 19940117.56$0
Jun 1994104117.09$1,777
May 1994116115.88$1,842
Apr 1994123114.14$1,739
Mar 19940112.46$0
Feb 1994101112.50$1,263
Jan 1994210112.66$2,659
Dec 1993118112.33$1,455
Nov 1993190114.49$2,753
Oct 199395115.85$1,506
Sep 1993183115.03$2,750
Aug 1993101115.66$1,582
Jul 1993209115.46$3,231
Jun 19930116.79$0
May 1993120117.68$2,122
Apr 19930118.05$0
Mar 199390118.14$1,633
Feb 1993240117.90$4,296
Jan 19930116.93$0

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                   13 bbl  × $106.41 =     $1,383
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                   $1,383

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/1380 is the state's own key, not one this site invented.