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NORTH MERTZON SAN ANGELO UNIT

Operated by FRONT STREET OPERATING, LLC (P-5 287095) in the MERTZON (SAN ANGELO) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5109District 7CField 60698664Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$4.0 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The MERTZON (SAN ANGELO) field

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 5 leases and 71 wells, and the rule below applies to all of them.

Discovered
1955-07-12
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,200 ft
minimum
From a lease line
550 ft
minimum

A drilling unit in this field needs at least 40 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.

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
NGPA14none——

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
OilDisposition79,360 bbl$3,893,072
Casinghead gasProduction58,379 Mcf$95,779
Total$3,988,851

20,296 Mcf of this lease's gas, across 45 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 (30)

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 31.2011, -100.9050. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.4 miles.

31.20153, -100.90586 · 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
100.0%
30 of 30 wells
With a plug date
96.7%
29 of 30 wells
Median depth
1,800 ft
29 wells filed one
Completion to plug
37.4 years
median over 17 wells

What the state filed about each well

On the RRC proration schedule
30100.0%
A plug date is filed
2996.7%
BothOn the schedule and plugged. Neither fact cancels the other.
2996.7%
NeitherNo plug date, and not on the schedule.
00.0%

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

Total depth in feet, 29 of 30 wells. Median 1,800 ft, with the middle half between 1,704 and 1,800 ft; the shallowest is 1,650 ft and the deepest 6,931 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, 17 of 30 wells, Jul 1967 – Jun 1996. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jul 1967 – Jun 1996
17 of 30 wells; 13 filed none
Plug dates filed
Apr 1980 – Apr 2023
29 of 30 wells; 1 filed none

Last completion to plug: a median of 37.4 years across the 17 wells that filed both dates, with the middle half between 31.3 years and 38.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

30 wells

42-235000121011,750 ft—Apr 2023Yes
42-235004292011,800 ft—Aug 1981Yes
42-23500430202D1,720 ft—Aug 1981Yes
42-235004312031,800 ft—Aug 1981Yes
42-235004655011,692 ft—Aug 1981Yes
42-235004665021,650 ft—Apr 1980Yes
42-23500467503———Yes
42-235004685041,710 ft—Mar 2023Yes
42-235005054011,665 ft—Dec 1981Yes
42-235005064021,704 ft—Apr 2023Yes
42-235005094051,807 ft—Aug 1992Yes
42-235005203011,815 ft—Mar 2023Yes
42-235005686011,700 ft—Mar 2023Yes
42-235005223031,832 ftJun 1996Jun 2012Yes
42-235330116071,750 ftOct 1991Feb 2023Yes
42-235005074031,800 ftJul 1986Apr 2023Yes
42-235318166066,931 ftFeb 1986Feb 2023Yes
42-235005706031,660 ftDec 1985Apr 2023Yes
42-235005213021,749 ftMar 1985Apr 2023Yes
42-235323506051,800 ftDec 1984Mar 2023Yes
42-235323385071,800 ftOct 1984Mar 2023Yes
42-235323392041,800 ftOct 1984Mar 2023Yes
42-235323402051,800 ftOct 1984Mar 2023Yes
42-235323515061,800 ftOct 1984Mar 2023Yes
42-235005696021,682 ftSep 1984Oct 1989Yes
42-235004327012,000 ftJul 1967Dec 2004Yes
42-235004695051,746 ftJul 1967Mar 2013Yes
42-235005716041,676 ftJul 1967Jul 1992Yes
42-235005084041,801 ftJul 1967May 1992Yes
42-235000151031,810 ftJul 1967Apr 2023Yes

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 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
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 2017145047.523.09$6,890
Aug 20170045.373.00$0
Jul 2017325043.873.09$14,258
Jun 2017184042.493.09$7,818
May 20170045.373.26$0
Apr 2017357047.933.21$17,111
Mar 2017174046.772.98$8,138
Feb 2017348050.452.95$17,557
Jan 2017168049.413.42$8,301
Dec 20160048.763.72$0
Nov 2016324042.492.64$13,767
Oct 2016184046.193.09$8,499
Sep 2016179041.553.10$7,437
Aug 2016177041.442.92$7,335
Jul 2016516041.622.92$21,476
Jun 20160045.352.69$0
May 2016180042.521.99$7,654
Apr 2016173036.561.99$6,325
Mar 2016349033.011.79$11,520
Feb 2016355026.472.06$9,397
Jan 2016313027.352.36$8,561
Dec 20150032.362.00$0
Nov 2015364038.792.17$14,120
Oct 2015176043.552.43$7,665
Sep 2015348042.992.76$14,961
Aug 2015172040.162.87$6,908
Jul 2015377048.152.95$18,153
Jun 2015173056.152.88$9,714
May 2015384055.212.96$21,201
Apr 2015356049.822.71$17,736
Mar 2015363042.892.93$15,569
Feb 2015368044.662.98$16,435
Jan 20150043.433.10$0
Dec 2014352054.693.59$19,251
Nov 2014360070.464.25$25,366
Oct 2014362078.303.90$28,345
Sep 2014360086.164.05$31,018
Aug 2014181089.394.04$16,180
Jul 2014361096.564.18$34,858
Jun 20140098.164.74$0
May 2014379094.734.73$35,903
Apr 2014181095.944.81$17,365
Mar 2014559095.895.06$53,603
Feb 2014176097.406.19$17,142
Jan 2014382090.404.86$34,533
Dec 2013180091.824.35$16,528
Nov 2013361088.853.74$32,075
Oct 2013188097.423.78$18,315
Sep 20131770104.113.72$18,427
Aug 20133580104.253.52$37,322
Jul 20131880102.523.72$19,274
Jun 2013341094.403.93$32,190
May 2013360094.834.15$34,139
Apr 20130093.964.28$0
Mar 2013356093.623.91$33,329
Feb 2013363091.233.42$33,116
Jan 2013189091.603.42$17,312
Dec 2012188086.773.42$16,313
Nov 2012179086.953.62$15,564
Oct 2012380089.383.40$33,964
Sep 2012356094.672.92$33,703
Aug 2012188092.662.91$17,420
Jul 2012299085.133.02$25,454
Jun 2012371079.822.52$29,613
May 2012187091.612.49$17,131
Apr 20123550101.652.00$36,086
Mar 20121730105.052.22$18,174
Feb 20123640101.102.57$36,800
Jan 2012368098.092.73$36,097
Dec 2011185096.873.24$17,921
Nov 2011557095.723.31$53,316
Oct 20110084.983.65$0
Sep 2011377083.623.99$31,525
Aug 2011349083.404.15$29,107
Jul 2011177094.144.52$16,663
Jun 2011170092.904.64$15,793
May 2011184098.134.40$18,056
Apr 20113590105.964.33$38,040
Mar 2011152096.364.06$14,647
Feb 2011364085.644.18$31,173
Jan 2011325086.504.59$28,113
Dec 2010180085.734.35$15,431
Nov 2010341080.843.80$27,566
Oct 2010332078.103.51$25,929
Sep 2010158072.633.98$11,476
Aug 2010342073.684.42$25,199
Jul 2010341072.554.74$24,740
Jun 2010316070.364.91$22,234
May 2010336071.124.24$23,896
Apr 2010346081.694.12$28,265
Mar 2010351078.394.39$27,515
Feb 2010342073.585.44$25,164
Jan 2010181074.365.96$13,459
Dec 2009412071.445.48$29,433
Nov 2009357074.593.75$26,629
Oct 2009321072.544.11$23,285
Sep 2009356065.543.06$23,332
Aug 2009319067.423.22$21,507
Jul 2009346061.133.46$21,151
Jun 2009339066.163.90$22,428
May 2009340054.743.93$18,612
Apr 2009173046.773.59$8,091
Mar 2009330042.144.06$13,906
Feb 2009360032.814.63$11,812
Jan 2009356035.865.37$12,766
Dec 2008363037.105.98$13,467
Nov 2008353055.496.86$19,588
Oct 2008361075.246.92$27,162
Sep 20083750101.767.88$38,160
Aug 20083410114.228.48$38,949
Jul 20081730131.0811.39$22,677
Jun 20083460131.3313.03$45,440
May 20083560123.1711.57$43,849
Apr 20083590110.3110.45$39,601
Mar 20083460101.909.66$35,257
Feb 2008344092.538.77$31,830
Jan 2008540090.388.21$48,805
Dec 2007362088.337.30$31,975
Nov 2007360091.677.29$33,001
Oct 2007349082.856.92$28,915
Sep 2007521075.846.24$39,513
Aug 2007338069.066.39$23,342
Jul 2007331070.906.39$23,468
Jun 2007533062.007.55$33,046
May 2007350058.747.85$20,559
Apr 2007327059.617.81$19,492
Mar 2007177056.927.30$10,075
Feb 2007179055.108.22$9,863
Jan 2007348050.306.73$17,504
Dec 2006166056.656.92$9,404
Nov 2006354054.207.62$19,187
Oct 2006351054.906.01$19,270
Sep 2006345060.085.04$20,728
Aug 2006354068.717.34$24,323
Jul 2006324069.376.34$22,476
Jun 2006350066.286.38$23,198
May 2006354066.016.42$23,368
Apr 2006344064.397.36$22,150
Mar 2006356056.707.08$20,185
Feb 2006511057.597.75$29,428
Jan 20060060.598.93$0
Dec 2005140054.9413.42$7,692
Nov 2005344054.6910.59$18,813
Oct 2005518058.3413.80$30,220
Sep 2005337061.4512.08$20,709
Aug 2005160061.519.80$9,842
Jul 2005169055.697.84$9,412
Jun 2005502052.337.38$26,270
May 2005355045.226.65$16,053
Apr 2005208049.207.36$10,234
Mar 20053518550.377.15$18,288
Feb 20054949245.226.31$22,919
Jan 20053299943.166.32$14,826
Dec 20043108139.866.75$12,903
Nov 20043599345.286.33$16,844
Oct 200450211849.706.52$25,718
Sep 200435812043.245.28$16,114
Aug 200433615142.375.55$15,074
Jul 200466811838.286.08$26,289
Jun 200417517136.106.43$7,418
May 200452413937.486.49$20,542
Apr 2004534134.475.86$18,413
Mar 2004178034.365.53$6,116
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 2003176829.765.13$5,279
Jul 20030029.415.17$0
Jun 20031804128.565.98$5,386
May 200302526.595.97$149
Apr 20031751926.675.41$4,770
Mar 2003178631.146.10$5,580
Feb 20030633.487.93$48
Jan 20031792330.315.58$5,554
Dec 20021763626.914.85$4,911
Nov 200202824.664.14$116
Oct 20021771726.464.23$4,755
Sep 20021711127.443.64$4,732
Aug 2002174625.963.16$4,536
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 2002182018.222.38$3,316
Jan 200201817.172.38$43
Dec 20011791616.932.36$3,068
Nov 200101618.072.41$38
Oct 20011801719.782.53$3,603
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20011652923.933.20$4,041
Jun 20011793024.563.82$4,511
May 20011743525.524.31$4,591
Apr 200105924.685.34$315
Mar 20011775124.545.38$4,618
Feb 20010027.755.77$0
Jan 2001339427.478.40$9,346
Dec 200001626.889.12$146
Nov 20001823632.215.66$6,066
Oct 20001698431.235.15$5,710
Sep 20001715331.875.19$5,725
Aug 200004629.644.54$209
Jul 200001628.534.09$65
Jun 20000029.304.40$0
May 20000927.263.68$33
Apr 200004124.513.12$128
Mar 20003572428.422.86$10,215
Feb 20001797527.622.73$5,148
Jan 20003569725.272.48$9,237
Dec 19993519024.282.42$8,740
Nov 199918011223.192.43$4,447
Oct 199918014620.982.80$4,186
Sep 199917911621.752.62$4,197
Aug 19991919.262.88$45
Jul 199935316517.892.37$6,707
Jun 199934120615.942.36$5,922
May 199917321215.792.32$3,224
Apr 199934222215.102.21$5,654
Mar 199901,03012.471.84$1,893
Feb 19991791,1129.981.82$3,808
Jan 19991731,18210.381.90$4,041
Dec 19981771,0419.201.77$3,474
Nov 19981791,21710.892.19$4,609
Oct 19981741,09712.421.97$4,321
Sep 19981801,24712.592.08$4,863
Aug 19981781,37311.301.91$4,630
Jul 19983441,43711.742.24$7,254
Jun 19981761,44611.242.24$5,213
May 19981741,53112.622.21$5,574
Apr 19983441,58213.042.51$8,449
Mar 19983461,40712.802.31$7,678
Feb 19983341,23713.952.30$7,503
Jan 199801,53214.702.15$3,301
Dec 19973521,67016.322.41$9,771
Nov 19971751,52818.193.09$7,902
Oct 199701,39819.253.15$4,403
Sep 19971731,37417.742.95$7,129
Aug 19971731,28917.862.55$6,383
Jul 19973481,04717.582.25$8,470
Jun 199734367017.242.26$7,426
May 19971721,08418.972.31$5,765
Apr 199734695917.882.08$8,184
Mar 19973531,24418.951.94$9,102
Feb 19971701,48920.492.21$6,768
Jan 19973451,31623.483.54$12,759
Dec 19961671,11223.32—$3,894
Nov 199634082021.97—$7,470
Oct 199633986723.31—$7,902
Sep 19963381,24722.22—$7,510
Aug 19961662,20120.26—$3,363
Jul 19963291,79219.55—$6,432
Jun 199634399718.73—$6,424
May 199633040719.43—$6,412
Apr 199634143021.51—$7,335
Mar 199633335419.38—$6,454
Feb 199633118116.98—$5,620
Jan 199617715717.07—$3,021
Dec 19953459817.19—$5,931
Nov 1995344016.00—$5,504
Oct 1995348015.43—$5,370
Sep 1995169016.18—$2,734
Aug 199533418915.92—$5,317
Jul 199534117515.24—$5,197
Jun 199534115116.41—$5,596
May 199533216917.56—$5,830
Apr 199531216017.73—$5,532
Mar 199517310916.44—$2,844
Feb 199534813316.58—$5,770
Jan 19953378915.92—$5,365
Dec 199433710915.03—$5,065
Nov 199433912715.90—$5,390
Oct 199434015615.58—$5,297
Sep 199434437015.29—$5,260
Aug 199434248516.13—$5,516
Jul 199434151217.56—$5,988
Jun 199451336017.09—$8,767
May 199434222215.88—$5,431
Apr 199451121614.14—$7,226
Mar 199452222312.46—$6,504
Feb 199452819412.50—$6,600
Jan 199433022612.66—$4,178
Dec 199352419712.33—$6,461
Nov 199351817314.49—$7,506
Oct 199351616715.85—$8,179
Sep 199351419215.03—$7,725
Aug 199333537015.66—$5,246
Jul 199368838715.46—$10,636
Jun 199334068416.79—$5,709
May 199351367917.68—$9,070
Apr 199366573718.05—$12,003
Mar 199335234418.14—$6,385
Feb 199347966017.90—$8,574
Jan 199376666816.93—$12,968

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.

Sep 2017 — as filed, then multipliedworked
Oil                  145 bbl  × $ 47.52 =     $6,890
Casinghead gas         0 Mcf  × $  3.09 =         $0

────────────────────────────────────────────────────
Month total                                   $6,890

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. 7C/O/5109 is the state's own key, not one this site invented.