MANN, ANN T., ETAL

Operated by KLASSEN ENERGY, INC. (P-5 469922) in the CROCKETT field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4483District 7CField 21766001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$987 k
Jan 1993 – May 2026
Value, last 12 filed months
$46 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 35 leases and 188 wells, and the rule below applies to all of them.

Discovered
1938-12-31
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.

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.

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
OilDisposition17,373 bbl$987,464
Casinghead gasProduction27 Mcf$0
Total$987,464

27 Mcf of this lease's gas, across 27 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 (1)

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 31.0676, -102.0494. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.06759, -102.04941 · 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 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
no depth filed
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.
1100.0%

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.

1 well

42-105100251

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 2026560106.413.05$5,959
Apr 202654098.932.87$5,342
Mar 202655089.753.15$4,936
Feb 20260063.503.75$0
Jan 202658059.138.00$3,430
Dec 202561056.664.41$3,456
Nov 202574058.593.93$4,336
Oct 202556059.383.30$3,325
Sep 2025118062.743.08$7,403
Aug 202558063.933.01$3,708
Jul 20250066.743.32$0
Jun 202557066.483.13$3,789
May 202561060.553.23$3,694
Apr 202556062.363.54$3,492
Mar 202560067.704.27$4,062
Feb 20250070.884.34$0
Jan 202560074.324.28$4,459
Dec 202458068.993.12$4,001
Nov 20240069.052.20$0
Oct 202459071.372.28$4,211
Sep 202459069.612.36$4,107
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 202454078.082.63$4,216
May 202459078.812.20$4,650
Apr 202459084.451.66$4,983
Mar 202458080.301.55$4,657
Feb 20240076.091.78$0
Jan 202461073.023.30$4,454
Dec 202352071.262.61$3,706
Nov 202357077.892.81$4,440
Oct 20230085.443.09$0
Sep 202356089.042.74$4,986
Aug 202356080.522.67$4,509
Jul 202354074.852.64$4,042
Jun 202353068.962.26$3,655
May 20230070.622.23$0
Apr 202359078.122.24$4,609
Mar 202358072.852.39$4,225
Feb 202359075.112.47$4,431
Jan 202361076.533.39$4,668
Dec 20220076.415.73$0
Nov 202259085.005.65$5,015
Oct 202259087.185.86$5,144
Sep 202257084.888.16$4,838
Aug 202261094.529.13$5,766
Jul 202200101.587.54$0
Jun 2022590115.097.98$6,790
May 2022580109.378.43$6,343
Apr 2022590104.226.84$6,149
Mar 202200108.885.08$0
Feb 202258091.054.86$5,281
Jan 20220081.844.54$0
Dec 202157071.323.90$4,065
Nov 20210077.435.24$0
Oct 202158079.795.71$4,628
Sep 202156069.865.35$3,912
Aug 202160066.024.22$3,961
Jul 20210070.783.98$0
Jun 202153069.493.38$3,683
May 202158063.483.02$3,682
Apr 202158060.362.76$3,501
Mar 202159061.302.72$3,617
Feb 20210057.805.55$0
Jan 202160050.412.81$3,025
Dec 20200044.642.68$0
Nov 202059038.772.71$2,287
Oct 20200036.972.48$0
Sep 202060037.091.99$2,225
Aug 20200039.982.39$0
Jul 202056038.371.83$2,149
Jun 2020115034.901.69$4,014
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 202055030.341.86$1,669
Feb 202055049.881.98$2,743
Jan 202054057.252.09$3,092
Dec 201959059.012.30$3,482
Nov 201953055.302.75$2,931
Oct 201952053.472.42$2,780
Sep 201954055.052.66$2,973
Aug 20190053.112.30$0
Jul 2019113056.272.46$6,359
Jun 201957052.782.49$3,008
May 201957058.482.74$3,333
Apr 201952062.632.75$3,257
Mar 201954056.803.06$3,067
Feb 201961050.852.79$3,102
Jan 20190046.033.23$0
Dec 201852046.594.19$2,423
Nov 201859052.934.24$3,123
Oct 201854061.443.40$3,318
Sep 201861059.543.11$3,632
Aug 201859059.403.07$3,505
Jul 201852065.142.93$3,387
Jun 201855060.183.08$3,310
May 201852065.382.90$3,400
Apr 20180063.842.90$0
Mar 201858061.222.79$3,551
Feb 201861061.782.77$3,769
Jan 201854062.874.01$3,395
Dec 201757057.272.92$3,264
Nov 201753055.423.12$2,937
Oct 201757049.292.98$2,810
Sep 201753047.523.09$2,519
Aug 201752045.373.00$2,359
Jul 201742043.873.09$1,843
Jun 201756042.493.09$2,379
May 201751045.373.26$2,314
Apr 201757047.933.21$2,732
Mar 201757046.772.98$2,666
Feb 201755050.452.95$2,775
Jan 201757049.413.42$2,816
Dec 201657048.763.72$2,779
Nov 201657042.492.64$2,422
Oct 201653046.193.09$2,448
Sep 201659041.553.10$2,451
Aug 201656041.442.92$2,321
Jul 201653041.622.92$2,206
Jun 201657045.352.69$2,585
May 201653042.521.99$2,254
Apr 201655036.561.99$2,011
Mar 201658033.011.79$1,915
Feb 201658026.472.06$1,535
Jan 201661027.352.36$1,668
Dec 201560032.362.00$1,942
Nov 201556038.792.17$2,172
Oct 201553043.552.43$2,308
Sep 201555042.992.76$2,364
Aug 201559040.162.87$2,369
Jul 201556048.152.95$2,696
Jun 201554056.152.88$3,032
May 201560055.212.96$3,313
Apr 201559049.822.71$2,939
Mar 201560042.892.93$2,573
Feb 201555044.662.98$2,456
Jan 201555043.433.10$2,389
Dec 201454054.693.59$2,953
Nov 201456070.464.25$3,946
Oct 201458078.303.90$4,541
Sep 201454086.164.05$4,653
Aug 201456089.394.04$5,006
Jul 201459096.564.18$5,697
Jun 201456098.164.74$5,497
May 201459094.734.73$5,589
Apr 201457095.944.81$5,469
Mar 201459095.895.06$5,658
Feb 201458097.406.19$5,649
Jan 201457090.404.86$5,153
Dec 2013115091.824.35$10,559
Nov 20130088.853.74$0
Oct 201361097.423.78$5,943
Sep 2013590104.113.72$6,142
Aug 2013560104.253.52$5,838
Jul 2013550102.523.72$5,639
Jun 2013107094.403.93$10,101
May 201353094.834.15$5,026
Apr 201355093.964.28$5,168
Mar 201355093.623.91$5,149
Feb 201358091.233.42$5,291
Jan 201355091.603.42$5,038
Dec 201259086.773.42$5,119
Nov 201258086.953.62$5,043
Oct 201259089.383.40$5,273
Sep 201255094.672.92$5,207
Aug 201259092.662.91$5,467
Jul 201256085.133.02$4,767
Jun 201260079.822.52$4,789
May 201254091.612.49$4,947
Apr 2012550101.652.00$5,591
Mar 2012560105.052.22$5,883
Feb 2012550101.102.57$5,561
Jan 201255098.092.73$5,395
Dec 201157096.873.24$5,522
Nov 201159095.723.31$5,647
Oct 201153084.983.65$4,504
Sep 201155083.623.99$4,599
Aug 201160083.404.15$5,004
Jul 2011111094.144.52$10,450
Jun 201159092.904.64$5,481
May 2011108098.134.40$10,598
Apr 2011560105.964.33$5,934
Mar 2011116096.364.06$11,178
Feb 201159085.644.18$5,053
Jan 201161086.504.59$5,277
Dec 2010115085.734.35$9,859
Nov 201055080.843.80$4,446
Oct 201052078.103.51$4,061
Sep 201060072.633.98$4,358
Aug 2010122073.684.42$8,989
Jul 201054072.554.74$3,918
Jun 201059070.364.91$4,151
May 2010116071.124.24$8,250
Apr 201086081.694.12$7,025
Mar 201059078.394.39$4,625
Feb 201060073.585.44$4,415
Jan 201056074.365.96$4,164
Dec 200960071.445.48$4,286
Nov 200960074.593.75$4,475
Oct 200959072.544.11$4,280
Sep 2009160065.543.06$10,486
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 2009157054.743.93$8,594
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 2009170035.865.37$6,096
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 20081600131.0811.39$20,973
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 20081710101.909.66$17,425
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 2007159082.856.92$13,173
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007156058.747.85$9,163
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 2006163056.656.92$9,234
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 2006151069.376.34$10,475
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 2006166056.707.08$9,412
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 2005163058.3413.80$9,509
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 2005161045.226.65$7,280
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 2004159039.866.75$6,338
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 2004165038.286.08$6,316
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 2004167032.036.30$5,349
Dec 20031030.266.30$30
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 2003161029.765.13$4,791
Jul 20031029.415.17$29
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 2003166031.146.10$5,169
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 2002164026.464.23$4,339
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 2002169024.663.58$4,168
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 2001168016.932.36$2,844
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 2001171023.933.20$4,092
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 2001171027.755.77$4,745
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 2000159031.875.19$5,067
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 2000163024.513.12$3,995
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 1999167023.192.43$3,873
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 1999162015.942.36$2,582
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 1999163010.381.90$1,692
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 1998168011.301.91$1,898
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 19980012.622.21$0
Apr 19980013.042.51$0
Mar 1998164012.802.31$2,099
Feb 19980013.952.30$0
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 1997164019.253.15$3,157
Sep 19970017.742.95$0
Aug 19970017.862.55$0
Jul 19970017.582.25$0
Jun 1997165017.242.26$2,845
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 1997165023.483.54$3,874
Dec 19960023.32$0
Nov 19960021.97$0
Oct 19960023.31$0
Sep 1996164022.22$3,644
Aug 19960020.26$0
Jul 19960019.55$0
Jun 19960018.73$0
May 19960019.43$0
Apr 1996166021.51$3,571
Mar 19960019.38$0
Feb 19960016.98$0
Jan 19960017.07$0
Dec 1995169017.19$2,905
Nov 19950016.00$0
Oct 19950015.43$0
Sep 19950016.18$0
Aug 19950015.92$0
Jul 1995170015.24$2,591
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950116.44$0
Feb 19950116.58$0
Jan 1995178115.92$2,834
Dec 19940115.03$0
Nov 19940115.90$0
Oct 19940115.58$0
Sep 1994170115.29$2,599
Aug 19940116.13$0
Jul 19940117.56$0
Jun 19940117.09$0
May 1994167115.88$2,652
Apr 19940114.14$0
Mar 19940112.46$0
Feb 19940112.50$0
Jan 1994170112.66$2,152
Dec 19930112.33$0
Nov 19930114.49$0
Oct 19930115.85$0
Sep 19930115.03$0
Aug 19930115.66$0
Jul 19930115.46$0
Jun 19930116.79$0
May 1993165117.68$2,917
Apr 19930118.05$0
Mar 19930118.14$0
Feb 19930117.90$0
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                   56 bbl  × $106.41 =     $5,959
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                   $5,959

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/4483 is the state's own key, not one this site invented.