MAHLMANN, WALTER

Operated by CHESAPEAKE OPERATING, L.L.C. (P-5 147699) in the CALDWELL (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12917District 03Field 14710500NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.1 M
Jan 1993 – Oct 2022
Value, last 12 filed months
$0
at the published price for each month
Months reported
358
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 256 leases and 330 wells, and the rule below applies to all of them.

Discovered
1978-06-29
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
467 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1991-11-25.

The Commission's schedule remark for this field reads: PER DOCKET 3-97101 EFF 11-25-91, PERM RULES. 80 ACRE OPT/3250 DIAG

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
NGPA2none

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
OilDisposition53,843 bbl$1,762,169
Casinghead gasProduction127,213 Mcf$339,180
Total$2,101,349

47,947 Mcf of this lease's gas, across 47 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 30.4672, -96.6922. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.46725, -96.69216 · 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%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
8,082 ft
1 wells filed one
Completion to plug
42.0 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
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

The one well that filed a depth was drilled to 8,082 ft.

Completions filed
May 1980
1 of 1 wells
Plug dates filed
May 2022
1 of 1 wells

Last completion to plug: a median of 42.0 years across the 1 well that filed both dates, with the middle half between 42.0 years and 42.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-0513056118,082 ftMay 1980May 2022Yes

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 (358)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

358 months

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 20200237.091.99$4
Aug 202037039.982.39$1,479
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 2020152014.751.80$2,242
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 2020170057.252.09$9,733
Dec 20190059.012.30$0
Nov 20190155.302.75$3
Oct 2019149153.472.42$7,969
Sep 201901455.052.66$37
Aug 20190053.112.30$0
Jul 2019162056.272.46$9,116
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 2019162062.632.75$10,146
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 2019154046.033.23$7,089
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 2018104461.443.40$6,403
Sep 2018151059.543.11$8,991
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 2018185060.183.08$11,133
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 2018172061.222.79$10,530
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017178057.272.92$10,194
Nov 20170055.423.12$0
Oct 2017184049.292.98$9,069
Sep 20170247.523.09$6
Aug 201701145.373.00$33
Jul 20171912743.873.09$8,463
Jun 201708542.493.09$262
May 2017015545.373.26$506
Apr 201718515047.933.21$9,349
Mar 2017014746.772.98$439
Feb 2017013450.452.95$396
Jan 2017015149.413.42$516
Dec 201619213848.763.72$9,876
Nov 2016017442.492.64$460
Oct 2016020546.193.09$634
Sep 201616620841.553.10$7,542
Aug 2016122041.442.92$685
Jul 2016022041.622.92$643
Jun 201618419445.352.69$8,865
May 2016017942.521.99$356
Apr 2016118336.561.99$401
Mar 2016017233.011.79$309
Feb 201619016626.472.06$5,372
Jan 2016017527.352.36$414
Dec 20153117332.362.00$1,349
Nov 2015017238.792.17$373
Oct 201517317843.552.43$7,966
Sep 2015019142.992.76$527
Aug 2015019640.162.87$563
Jul 201518820048.152.95$9,641
Jun 2015018756.152.88$539
May 2015019555.212.96$576
Apr 2015018349.822.71$495
Mar 201519218342.892.93$8,772
Feb 2015017244.662.98$512
Jan 2015018543.433.10$574
Dec 201416515554.693.59$9,581
Nov 2014019670.464.25$833
Oct 201418217578.303.90$14,933
Sep 2014017086.164.05$688
Aug 2014117589.394.04$796
Jul 201417917996.564.18$18,032
Jun 2014017998.164.74$848
May 2014020694.734.73$974
Apr 201418818295.944.81$18,912
Mar 2014018595.895.06$936
Feb 2014018697.406.19$1,152
Jan 2014021190.404.86$1,026
Dec 201318925191.824.35$18,447
Nov 2013022088.853.74$822
Oct 2013023597.423.78$888
Sep 2013187233104.113.72$20,335
Aug 20130204104.253.52$719
Jul 2013174137102.523.72$18,348
Jun 2013018894.403.93$739
May 2013019494.834.15$805
Apr 201316918893.964.28$16,684
Mar 2013015393.623.91$599
Feb 201317916991.233.42$16,908
Jan 2013018291.603.42$622
Dec 2012019086.773.42$650
Nov 201217716886.953.62$15,999
Oct 2012019489.383.40$660
Sep 2012013394.672.92$388
Aug 201217420692.662.91$16,722
Jul 201206785.133.02$202
Jun 201218621479.822.52$15,386
May 2012021891.612.49$542
Apr 2012187208101.652.00$19,424
Mar 20120208105.052.22$462
Feb 2012197196101.102.57$20,420
Jan 2012024398.092.73$664
Dec 201118223596.873.24$18,392
Nov 2011022195.723.31$732
Oct 201118323084.983.65$16,391
Sep 2011023183.623.99$921
Aug 201137426783.404.15$32,299
Jul 201117027694.144.52$17,251
Jun 201118825492.904.64$18,644
May 201119018598.134.40$19,460
Apr 20110250105.964.33$1,083
Mar 201117329696.364.06$17,871
Feb 201137426885.644.18$33,150
Jan 201118611586.504.59$16,617
Dec 2010026885.734.35$1,165
Nov 201018729480.843.80$16,233
Oct 201019138778.103.51$16,275
Sep 2010050472.633.98$2,006
Aug 201018936973.684.42$15,556
Jul 201018616472.554.74$14,271
Jun 2010020670.364.91$1,012
May 201017521571.124.24$13,357
Apr 2010020781.694.12$853
Mar 201017621278.394.39$14,727
Feb 2010017873.585.44$969
Jan 201017720274.365.96$14,366
Dec 2009020471.445.48$1,119
Nov 200918321474.593.75$14,453
Oct 2009022072.544.11$904
Sep 2009021565.543.06$659
Aug 200918723667.423.22$13,367
Jul 2009024161.133.46$835
Jun 2009022866.163.90$888
May 200918821654.743.93$11,139
Apr 2009021646.773.59$775
Mar 200918021442.144.06$8,454
Feb 2009020732.814.63$959
Jan 200919223735.865.37$8,158
Dec 2008026037.105.98$1,554
Nov 200818623155.496.86$11,906
Oct 2008024275.246.92$1,675
Sep 20080192101.767.88$1,512
Aug 2008188265114.228.48$23,721
Jul 20080332131.0811.39$3,781
Jun 2008193430131.3313.03$30,951
May 20080426123.1711.57$4,931
Apr 20080408110.3110.45$4,266
Mar 2008194305101.909.66$22,716
Feb 2008020392.538.77$1,780
Jan 200819616490.388.21$19,060
Dec 200705188.337.30$372
Nov 200719510191.677.29$18,612
Oct 2007012182.856.92$838
Sep 2007015675.846.24$974
Aug 200718719369.066.39$14,147
Jul 200718221870.906.39$14,296
Jun 2007024662.007.55$1,857
May 200719021658.747.85$12,855
Apr 200719629459.617.81$13,978
Mar 200719526956.927.30$13,064
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20061054.207.62$54
Oct 20062054.906.01$110
Sep 200601060.085.04$50
Aug 2006018068.717.34$1,321
Jul 200618337069.376.34$15,042
Jun 200618235366.286.38$14,316
May 2006033266.016.42$2,133
Apr 200619142364.397.36$15,412
Mar 2006042556.707.08$3,010
Feb 200619648157.597.75$15,016
Jan 2006162760.598.93$5,662
Dec 200518754254.9413.42$17,545
Nov 2005140054.6910.59$4,290
Oct 200518325558.3413.80$14,194
Sep 2005123761.4512.08$2,924
Aug 200519023961.519.80$14,028
Jul 2005125355.697.84$2,040
Jun 200518823952.337.38$11,602
May 2005026245.226.65$1,743
Apr 200518827449.207.36$11,266
Mar 2005326750.377.15$2,061
Feb 200517622245.226.31$9,360
Jan 2005027243.166.32$1,720
Dec 200418931139.866.75$9,633
Nov 2004019945.286.33$1,260
Oct 2004032549.706.52$2,117
Sep 200418232543.245.28$9,587
Aug 2004034242.375.55$1,898
Jul 200418534338.286.08$9,169
Jun 200416634536.106.43$8,212
May 2004033337.486.49$2,163
Apr 200418131134.475.86$8,061
Mar 2004030734.365.53$1,698
Feb 200417127632.455.51$7,070
Jan 200419129732.036.30$7,989
Dec 2003031330.266.30$1,972
Nov 200319132028.804.60$6,971
Oct 2003035028.174.76$1,666
Sep 200319036126.314.75$6,713
Aug 200319138929.765.13$7,680
Jul 2003039929.415.17$2,063
Jun 200316938128.565.98$7,106
May 200318840926.595.97$7,442
Apr 200319140026.675.41$7,257
Mar 2003035631.146.10$2,170
Feb 200337632633.487.93$15,172
Jan 2003034130.315.58$1,903
Dec 2002035226.914.85$1,709
Nov 200216835024.664.14$5,591
Oct 200217338226.464.23$6,193
Sep 200216736727.443.64$5,917
Aug 200218035825.963.16$5,806
Jul 2002037024.583.06$1,133
Jun 200217237723.733.34$5,340
May 200217542824.663.58$5,849
Apr 200216037623.653.51$5,105
Mar 200217237022.003.10$4,932
Feb 2002030118.222.38$715
Jan 200217837017.172.38$3,935
Dec 200117644116.932.36$4,022
Nov 200117330418.072.41$3,857
Oct 200117843719.782.53$4,626
Sep 200118548524.262.25$5,580
Aug 200117453324.873.05$5,955
Jul 200117255723.933.20$5,897
Jun 200118356024.563.82$6,636
May 200115161925.524.31$6,520
Apr 200117750124.685.34$7,041
Mar 200117247724.545.38$6,785
Feb 200117225927.755.77$6,267
Jan 200116835327.478.40$7,580
Dec 200017740326.889.12$8,434
Nov 200016734032.215.66$7,303
Oct 200017132931.235.15$7,033
Sep 2000021631.875.19$1,120
Aug 200017644629.644.54$7,242
Jul 200017244328.534.09$6,719
Jun 200017743629.304.40$7,103
May 200017945227.263.68$6,543
Apr 200017150124.513.12$5,752
Mar 2000047928.422.86$1,370
Feb 200017949727.622.73$6,299
Jan 200017946525.272.48$5,677
Dec 199935747924.282.42$9,829
Nov 1999030123.192.43$733
Oct 199918044520.982.80$5,024
Sep 199916947621.752.62$4,922
Aug 199917257219.262.88$4,958
Jul 199917854417.892.37$4,475
Jun 199917352515.942.36$3,998
May 199917563915.792.32$4,246
Apr 199917448415.102.21$3,696
Mar 199935476212.471.84$5,815
Feb 19993617189.981.82$4,908
Jan 199918776510.381.90$3,395
Dec 19981846289.201.77$2,806
Nov 1998061610.892.19$1,346
Oct 199834769812.421.97$5,684
Sep 199817161312.592.08$3,430
Aug 199836479911.301.91$5,637
Jul 199835973211.742.24$5,852
Jun 19981811,04611.242.24$4,375
May 19985371,19912.622.21$9,422
Apr 199818464613.042.51$4,018
Mar 199836572812.802.31$6,353
Feb 199818764013.952.30$4,080
Jan 199817964314.702.15$4,017
Dec 199734462216.322.41$7,114
Nov 199718268818.193.09$5,435
Oct 199736569119.253.15$9,203
Sep 199717575417.742.95$5,332
Aug 199735273617.862.55$8,167
Jul 199735671417.582.25$7,863
Jun 199717967117.242.26$4,601
May 199735377218.972.31$8,479
Apr 199735048317.882.08$7,264
Mar 199718445518.951.94$4,369
Feb 199718257220.492.21$4,991
Jan 199735661823.483.54$10,546
Dec 199636968223.32$8,605
Nov 199617565721.97$3,845
Oct 199652366623.31$12,191
Sep 199635767522.22$7,933
Aug 199617486320.26$3,525
Jul 19963441,09019.55$6,725
Jun 19963651,01518.73$6,836
May 19963681,09119.43$7,150
Apr 19963671,08321.51$7,894
Mar 19963611,01519.38$6,996
Feb 199636380316.98$6,164
Jan 19963541,07117.07$6,043
Dec 19953531,13017.19$6,068
Nov 199553499716.00$8,544
Oct 19953451,13815.43$5,323
Sep 19953511,20016.18$5,679
Aug 19955391,08815.92$8,581
Jul 19953581,09015.24$5,456
Jun 19955341,18416.41$8,763
May 19955231,28317.56$9,184
Apr 199535998817.73$6,365
Mar 199553664916.44$8,812
Feb 199571962116.58$11,921
Jan 199572296815.92$11,494
Dec 19943471,15915.03$5,215
Nov 19943561,05915.90$5,660
Oct 19946921,18915.58$10,781
Sep 199472283115.29$11,039
Aug 19948831,39316.13$14,243
Jul 1994248617.56$35
Jun 19946891,51217.09$11,775
May 19948841,52315.88$14,038
Apr 19941,0691,15914.14$15,116
Mar 199418168612.46$2,255
Feb 19940012.50$0
Jan 199471044912.66$8,989
Dec 1993092012.33$0
Nov 199335586514.49$5,144
Oct 19937061,20415.85$11,190
Sep 19931781,13915.03$2,675
Aug 19938541,17515.66$13,374
Jul 19933551,39015.46$5,488
Jun 199334637216.79$5,809
May 19937411,56817.68$13,101
Apr 19935311,18418.05$9,585
Mar 19935331,17318.14$9,669
Feb 19939011,46017.90$16,128
Jan 19933691,00416.93$6,247

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 2020 — as filed, then multipliedworked
Oil                    0 bbl  × $ 37.09 =         $0
Casinghead gas         2 Mcf  × $  1.99 =         $4

────────────────────────────────────────────────────
Month total                                       $4

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. 03/O/12917 is the state's own key, not one this site invented.