CALK, E. W.

Operated by CALK OPERATING, LLC (P-5 123870) in the SOMERSET field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 10893District 01Field 84560001OilCasinghead gasSave
Value, all time
$1.6 M
Jan 1993 – May 2026
Value, last 12 filed months
$27 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition33,452 bbl$1,603,852
Casinghead gasProduction19 Mcf$0
Total$1,603,852

19 Mcf of this lease's gas, across 19 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 (17)

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 29.2217, -98.6203. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

29.22113, -98.62010 · 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 17 wells
With a plug date
0.0%
0 of 17 wells
Median depth
1,280 ft
17 wells filed one
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.
17100.0%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 17 of 17 wells. Median 1,280 ft, with the middle half between 1,267 and 1,288 ft; the shallowest is 1,152 ft and the deepest 1,940 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

80s
90s
00s
10s

Last completion by decade, 17 of 17 wells, Jan 1983 – Sep 2013. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jan 1983 – Sep 2013
17 of 17 wells

17 wells

42-02938286121,940 ftSep 2013
42-02938285151,940 ftJun 2013
42-02935363161,185 ftDec 1984
42-02935364131,181 ftDec 1984
42-02935307141,173 ftJun 1984
42-02935308171,152 ftJun 1984
42-02933306111,681 ftSep 1983
42-02933307101,282 ftSep 1983
42-0293270741,280 ftApr 1983
42-0293270851,280 ftApr 1983
42-0293270961,267 ftApr 1983
42-0293295391,280 ftApr 1983
42-0293270521,288 ftFeb 1983
42-0293270631,282 ftFeb 1983
42-0293280681,288 ftFeb 1983
42-0293269171,290 ftJan 1983
42-0293270411,270 ftJan 1983

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 2026157063.503.75$9,970
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 2025143058.593.93$8,378
Oct 20250059.383.30$0
Sep 2025142062.743.08$8,909
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 2025160060.553.23$9,688
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 2025140074.324.28$10,405
Dec 2024159068.993.12$10,969
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 2024140078.082.63$10,931
May 20240078.812.20$0
Apr 2024140084.451.66$11,823
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 2024153073.023.30$11,172
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 2023134085.443.09$11,449
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 2023140072.852.39$10,199
Feb 20230075.112.47$0
Jan 2023165076.533.39$12,627
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 2022143094.529.13$13,516
Jul 2022990101.587.54$10,056
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 2021145071.323.90$10,341
Nov 20210077.435.24$0
Oct 2021148079.795.71$11,809
Sep 20210069.865.35$0
Aug 2021138066.024.22$9,111
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 2021140060.362.76$8,450
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 2021140050.412.81$7,057
Dec 2020150044.642.68$6,696
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 2020300037.091.99$11,127
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 2020167034.901.69$5,828
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 2020158057.252.09$9,046
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 2019147053.472.42$7,860
Sep 20190055.052.66$0
Aug 2019170053.112.30$9,029
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 2019150062.632.75$9,395
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 2019160046.033.23$7,365
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 2018320061.443.40$19,661
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 2018163065.142.93$10,618
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 2018152061.222.79$9,305
Feb 2018170061.782.77$10,503
Jan 20180062.874.01$0
Dec 2017177057.272.92$10,137
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 2017317047.523.09$15,064
Aug 20170045.373.00$0
Jul 2017155043.873.09$6,800
Jun 20170042.493.09$0
May 2017175045.373.26$7,940
Apr 2017160047.933.21$7,669
Mar 20170046.772.98$0
Feb 2017150050.452.95$7,568
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 2016160042.492.64$6,798
Oct 2016160046.193.09$7,390
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 2016160041.622.92$6,659
Jun 2016160045.352.69$7,256
May 2016160042.521.99$6,803
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 2016150026.472.06$3,971
Jan 2016160027.352.36$4,376
Dec 2015150032.362.00$4,854
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 2015145040.162.87$5,823
Jul 2015160048.152.95$7,704
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 2015320049.822.71$15,942
Mar 20150042.892.93$0
Feb 2015145044.662.98$6,476
Jan 20150043.433.10$0
Dec 2014320054.693.59$17,501
Nov 20140070.464.25$0
Oct 2014155078.303.90$12,137
Sep 2014160086.164.05$13,786
Aug 2014150089.394.04$13,409
Jul 2014160096.564.18$15,450
Jun 20140098.164.74$0
May 2014160094.734.73$15,157
Apr 20140095.944.81$0
Mar 2014160095.895.06$15,342
Feb 2014160097.406.19$15,584
Jan 20140090.404.86$0
Dec 2013155091.824.35$14,232
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 20131600104.113.72$16,658
Aug 20131600104.253.52$16,680
Jul 20131600102.523.72$16,403
Jun 2013165094.403.93$15,576
May 2013160094.834.15$15,173
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 2013310091.233.42$28,281
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 2012160086.953.62$13,912
Oct 2012160089.383.40$14,301
Sep 2012165094.672.92$15,621
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 2012330079.822.52$26,341
May 20120091.612.49$0
Apr 20121700101.652.00$17,281
Mar 20121600105.052.22$16,808
Feb 201200101.102.57$0
Jan 2012185098.092.73$18,147
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 2011345084.983.65$29,318
Sep 20110083.623.99$0
Aug 2011195083.404.15$16,263
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 2011360098.134.40$35,327
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 2011170085.644.18$14,559
Jan 20110086.504.59$0
Dec 2010160085.734.35$13,717
Nov 2010160080.843.80$12,934
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 2010170072.554.74$12,334
Jun 2010150070.364.91$10,554
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 2010330074.365.96$24,539
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 2009170072.544.11$12,332
Sep 2009160065.543.06$10,486
Aug 200950067.423.22$3,371
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 2009170054.743.93$9,306
Apr 2009230046.773.59$10,757
Mar 2009165042.144.06$6,953
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 2008170055.496.86$9,433
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 2008500131.0811.39$6,554
Jun 20081600131.3313.03$21,013
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 2008350092.538.77$32,386
Jan 20080090.388.21$0
Dec 2007330088.337.30$29,149
Nov 20070091.677.29$0
Oct 2007180082.856.92$14,913
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 2007167062.007.55$10,354
May 20070058.747.85$0
Apr 2007182059.617.81$10,849
Mar 20070056.927.30$0
Feb 2007180055.108.22$9,918
Jan 2007170050.306.73$8,551
Dec 2006171056.656.92$9,687
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 2006318069.376.34$22,060
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 2006176064.397.36$11,333
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 2006361060.598.93$21,873
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 2005183058.3413.80$10,676
Sep 20050061.4512.08$0
Aug 2005350061.519.80$21,529
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 2005146050.377.15$7,354
Feb 2005180045.226.31$8,140
Jan 20050043.166.32$0
Dec 2004183039.866.75$7,294
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 2004163042.375.55$6,906
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 2004345037.486.49$12,931
Apr 20040034.475.86$0
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 2004163032.036.30$5,221
Dec 2003148030.266.30$4,478
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 2003166026.314.75$4,367
Aug 20030029.765.13$0
Jul 2003328029.415.17$9,646
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 2003177026.675.41$4,721
Mar 20030031.146.10$0
Feb 2003179033.487.93$5,993
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 2002160026.464.23$4,234
Sep 20020027.443.64$0
Aug 2002150025.963.16$3,894
Jul 20020024.583.06$0
Jun 2002157023.733.34$3,726
May 20020024.663.58$0
Apr 2002299023.653.51$7,071
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 2002175017.172.38$3,005
Dec 20010016.932.36$0
Nov 2001166018.072.41$3,000
Oct 2001148019.782.53$2,927
Sep 20010024.262.25$0
Aug 2001160024.873.05$3,979
Jul 2001155023.933.20$3,709
Jun 2001168024.563.82$4,126
May 2001158025.524.31$4,032
Apr 20010024.685.34$0
Mar 2001165024.545.38$4,049
Feb 20010027.755.77$0
Jan 2001165027.478.40$4,533
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 2000163031.875.19$5,195
Aug 2000165029.644.54$4,891
Jul 20000028.534.09$0
Jun 2000156029.304.40$4,571
May 20000027.263.68$0
Apr 2000157024.513.12$3,848
Mar 20000028.422.86$0
Feb 2000170027.622.73$4,695
Jan 2000161025.272.48$4,068
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 1999162020.982.80$3,399
Sep 19990021.752.62$0
Aug 1999151019.262.88$2,908
Jul 1999154017.892.37$2,755
Jun 19990015.942.36$0
May 1999172015.792.32$2,716
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 199915809.981.82$1,577
Jan 1999175010.381.90$1,817
Dec 1998009.201.77$0
Nov 1998170010.892.19$1,851
Oct 19980012.421.97$0
Sep 199879012.592.08$995
Aug 1998177011.301.91$2,000
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 1998340012.622.21$4,291
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 1998168013.952.30$2,344
Jan 1998152014.702.15$2,234
Dec 19970016.322.41$0
Nov 1997168018.193.09$3,056
Oct 19970019.253.15$0
Sep 1997178017.742.95$3,158
Aug 1997158017.862.55$2,822
Jul 1997169017.582.25$2,971
Jun 1997178017.242.26$3,069
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 1997164018.951.94$3,108
Feb 19970020.492.21$0
Jan 1997155023.483.54$3,639
Dec 19960023.32$0
Nov 1996216021.97$4,746
Oct 1996148023.31$3,450
Sep 19960022.22$0
Aug 1996178020.26$3,606
Jul 1996163019.55$3,187
Jun 1996169018.73$3,165
May 19960019.43$0
Apr 1996470021.51$10,110
Mar 1996175019.38$3,392
Feb 19960016.98$0
Jan 19960017.07$0
Dec 19950017.19$0
Nov 1995193016.00$3,088
Oct 1995160015.43$2,469
Sep 19950016.18$0
Aug 1995162015.92$2,579
Jul 1995171015.24$2,606
Jun 19950016.41$0
May 1995327017.56$5,742
Apr 19950017.73$0
Mar 1995258016.44$4,242
Feb 19950016.58$0
Jan 1995176015.92$2,802
Dec 1994187015.03$2,811
Nov 19940015.90$0
Oct 1994227015.58$3,537
Sep 19940015.29$0
Aug 1994251016.13$4,049
Jul 19940117.56$0
Jun 1994248117.09$4,238
May 1994300115.88$4,764
Apr 1994129114.14$1,824
Mar 19940112.46$0
Feb 19940112.50$0
Jan 1994487112.66$6,165
Dec 19930112.33$0
Nov 19930114.49$0
Oct 19930115.85$0
Sep 1993169115.03$2,540
Aug 1993232115.66$3,633
Jul 199349115.46$758
Jun 1993178116.79$2,989
May 1993151117.68$2,670
Apr 1993174118.05$3,141
Mar 1993218118.14$3,955
Feb 1993277117.90$4,958
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.

Feb 2026 — as filed, then multipliedworked
Oil                  157 bbl  × $ 63.50 =     $9,970
Casinghead gas         0 Mcf  × $  3.75 =         $0

────────────────────────────────────────────────────
Month total                                   $9,970

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/10893 is the state's own key, not one this site invented.