CALVERLEY (P) "B"

Operated by COG OPERATING LLC (P-5 166150) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 26891District 08Field 85280300NGPA filingOilCasinghead gasSaveExport
Value, all time
$805 k
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 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 16,587 leases and 43,997 wells, and the rule below applies to all of them.

Discovered
1952-12-22
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 2018-02-13.

The Commission's schedule remark for this field reads: SPRABERRY (TREND AREA) FIELD EFFECTIVE 10/1/2019.

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
OilDisposition20,966 bbl$669,699
Casinghead gasProduction41,046 Mcf$135,400
Total$805,098

11,832 Mcf of this lease's gas, across 48 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 (2)

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 31.7816, -101.6326. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

31.78162, -101.63258 · 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%
2 of 2 wells
With a plug date
100.0%
2 of 2 wells
Median depth
8,293 ft
2 wells filed one
Completion to plug
27.4 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
2100.0%
A plug date is filed
2100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
2100.0%
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

Between 8,293 and 8,293 ft, median 8,293 ft, over the 2 wells that filed a depth.

Completions filed
Jun 1981 – Aug 1981
2 of 2 wells
Plug dates filed
May 2001 – Jun 2016
2 of 2 wells

Last completion to plug: a median of 27.4 years across the 2 wells that filed both dates, with the middle half between 23.6 years and 31.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-1733110518,293 ftAug 1981May 2001Yes
42-1733110428,293 ftJun 1981Jun 2016Yes

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 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 2015150048.152.95$7,223
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20139763597.423.78$11,850
Sep 20130180104.113.72$669
Aug 20130529104.253.52$1,863
Jul 20130359102.523.72$1,335
Jun 2013010594.403.93$413
May 2013014694.834.15$606
Apr 2013016693.964.28$711
Mar 201319025093.623.91$18,766
Feb 2013031491.233.42$1,074
Jan 2013025691.603.42$876
Dec 201201886.773.42$62
Nov 2012169086.953.62$14,695
Oct 2012010389.383.40$350
Sep 201205794.672.92$166
Aug 2012013592.662.91$393
Jul 201218213385.133.02$15,895
Jun 2012011679.822.52$292
May 2012012691.612.49$314
Apr 2012097101.652.00$194
Mar 2012095105.052.22$211
Feb 20121840101.102.57$18,602
Jan 2012012598.092.73$342
Dec 2011011796.873.24$379
Nov 201108595.723.31$281
Oct 201109884.983.65$358
Sep 2011181083.623.99$15,135
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 2011015392.904.64$710
May 2011016298.134.40$714
Apr 2011181157105.964.33$19,859
Mar 2011016096.364.06$649
Feb 2011012985.644.18$539
Jan 201118315786.504.59$16,550
Dec 2010016085.734.35$696
Nov 2010015980.843.80$603
Oct 2010014478.103.51$505
Sep 201018016072.633.98$13,710
Aug 2010015173.684.42$667
Jul 2010015972.554.74$753
Jun 201006570.364.91$319
May 2010013271.124.24$559
Apr 201017415681.694.12$14,857
Mar 2010016278.394.39$711
Feb 201018110473.585.44$13,884
Jan 2010015774.365.96$936
Dec 2009015971.445.48$872
Nov 2009015674.593.75$585
Oct 200918016572.544.11$13,735
Sep 2009014665.543.06$447
Aug 2009017267.423.22$554
Jul 2009016461.133.46$568
Jun 200918316066.163.90$12,730
May 2009016154.743.93$632
Apr 2009016346.773.59$585
Mar 2009016542.144.06$670
Feb 2009013032.814.63$602
Jan 200914516835.865.37$6,102
Dec 2008016937.105.98$1,010
Nov 2008017055.496.86$1,166
Oct 2008017575.246.92$1,211
Sep 200891173101.767.88$10,623
Aug 20080181114.228.48$1,535
Jul 200849181131.0811.39$8,484
Jun 20080176131.3313.03$2,294
May 2008104182123.1711.57$14,916
Apr 20080169110.3110.45$1,767
Mar 20080172101.909.66$1,662
Feb 2008016292.538.77$1,421
Jan 2008016490.388.21$1,346
Dec 200717817588.337.30$17,001
Nov 2007018091.677.29$1,313
Oct 200707682.856.92$526
Sep 200708075.846.24$500
Aug 20071813569.066.39$12,723
Jul 200704570.906.39$287
Jun 200704262.007.55$317
May 200704058.747.85$314
Apr 20071798559.617.81$11,334
Mar 2007010656.927.30$774
Feb 2007010355.108.22$846
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 200608454.207.62$640
Oct 200609554.906.01$571
Sep 20061259160.085.04$7,968
Aug 2006011068.717.34$807
Jul 200614410269.376.34$10,636
Jun 2006016366.286.38$1,041
May 2006017766.016.42$1,137
Apr 200612817064.397.36$9,493
Mar 2006018256.707.08$1,289
Feb 200610922857.597.75$8,045
Jan 200606960.598.93$616
Dec 2005928554.9413.42$6,195
Nov 200508054.6910.59$847
Oct 20058010958.3413.80$6,171
Sep 200510617861.4512.08$8,664
Aug 20051133461.519.80$7,284
Jul 2005010855.697.84$847
Jun 200510113452.337.38$6,274
May 2005012745.226.65$845
Apr 20051157649.207.36$6,217
Mar 2005497550.377.15$3,005
Feb 20050045.226.31$0
Jan 20051241443.166.32$5,440
Dec 20041195639.866.75$5,121
Nov 2004014445.286.33$912
Oct 200410215249.706.52$6,060
Sep 20048915143.245.28$4,646
Aug 2004011542.375.55$638
Jul 2004012538.286.08$761
Jun 200414116036.106.43$6,119
May 2004016637.486.49$1,078
Apr 20046715734.475.86$3,229
Mar 200412015234.365.53$4,964
Feb 2004020132.455.51$1,107
Jan 200410316032.036.30$4,307
Dec 2003016330.266.30$1,027
Nov 200318516328.804.60$6,077
Oct 2003017228.174.76$819
Sep 2003016926.314.75$803
Aug 200317017429.765.13$5,952
Jul 200309429.415.17$486
Jun 2003010828.565.98$646
May 20038112426.595.97$2,894
Apr 20034411126.675.41$1,774
Mar 200317811931.146.10$6,268
Feb 2003013133.487.93$1,038
Jan 2003010030.315.58$558
Dec 20029113726.914.85$3,114
Nov 200212714124.664.14$3,715
Oct 20020026.464.23$0
Sep 20021776127.443.64$5,079
Aug 200205425.963.16$171
Jul 200207124.583.06$217
Jun 2002011123.733.34$371
May 200215913624.663.58$4,408
Apr 200209323.653.51$327
Mar 200218215722.003.10$4,491
Feb 2002011618.222.38$276
Jan 200207717.172.38$183
Dec 200118013416.932.36$3,364
Nov 2001012118.072.41$291
Oct 2001012419.782.53$314
Sep 200118313124.262.25$4,735
Aug 200104024.873.05$122
Jul 200118215123.933.20$4,838
Jun 2001014724.563.82$562
May 2001015725.524.31$676
Apr 200111213424.685.34$3,479
Mar 2001014124.545.38$758
Feb 200112812827.755.77$4,290
Jan 2001015627.478.40$1,310
Dec 200010116726.889.12$4,238
Nov 200009132.215.66$515
Oct 200017716631.235.15$6,382
Sep 20004015331.875.19$2,068
Aug 200014215729.644.54$4,922
Jul 200018318128.534.09$5,961
Jun 2000026329.304.40$1,156
May 200012123827.263.68$4,174
Apr 200018320524.513.12$5,124
Mar 2000022828.422.86$652
Feb 20009929927.622.73$3,550
Jan 200011919725.272.48$3,496
Dec 199912426224.282.42$3,646
Nov 19991397923.192.43$3,416
Oct 199925212720.982.80$5,643
Sep 19998717321.752.62$2,345
Aug 19990019.262.88$0
Jul 19991302117.892.37$2,376
Jun 199901315.942.36$31
May 19993197915.792.32$5,220
Apr 19990015.102.21$0
Mar 199904312.471.84$79
Feb 19991781349.981.82$2,020
Jan 1999017710.381.90$336
Dec 19982081109.201.77$2,109
Nov 1998011610.892.19$254
Oct 19981589712.421.97$2,153
Sep 19981866312.592.08$2,473
Aug 1998016511.301.91$315
Jul 199817829611.742.24$2,752
Jun 1998023311.242.24$521
May 199818024812.622.21$2,819
Apr 199824127213.042.51$3,824
Mar 199818426612.802.31$2,970
Feb 199818025113.952.30$3,088
Jan 199818928114.702.15$3,384
Dec 199718628816.322.41$3,730
Nov 199719027318.193.09$4,299
Oct 199735629319.253.15$7,776
Sep 199717624317.742.95$3,840
Aug 1997018517.862.55$473
Jul 19979222717.582.25$2,127
Jun 199710226617.242.26$2,359
May 199732731918.972.31$6,940
Apr 199718328117.882.08$3,857
Mar 199718219818.951.94$3,833
Feb 199713217620.492.21$3,093
Jan 199717621623.483.54$4,897
Dec 199617923923.32$4,174
Nov 199618325421.97$4,021
Oct 199617824623.31$4,149
Sep 199616720822.22$3,711
Aug 199618230020.26$3,687
Jul 199623226819.55$4,536
Jun 199632123418.73$6,012
May 199617632219.43$3,420
Apr 199655541721.51$11,938
Mar 19960919.38$0
Feb 19961621116.98$2,751
Jan 1996010917.07$0
Dec 19956520117.19$1,117
Nov 19958524416.00$1,360
Oct 199511631415.43$1,790
Sep 19955025216.18$809
Aug 19959827115.92$1,560
Jul 19959026715.24$1,372
Jun 199514024016.41$2,297
May 199510623817.56$1,861
Apr 1995026417.73$0
Mar 199517122716.44$2,811
Feb 1995023816.58$0
Jan 19959531415.92$1,512
Dec 19949933015.03$1,488
Nov 19945623415.90$890
Oct 199412523115.58$1,948
Sep 199418024415.29$2,752
Aug 1994031516.13$0
Jul 199418030317.56$3,161
Jun 199427719817.09$4,734
May 1994032115.88$0
Apr 199418332814.14$2,588
Mar 199418541012.46$2,305
Feb 199418030112.50$2,250
Jan 199418627812.66$2,355
Dec 199348413112.33$5,968
Nov 199309314.49$0
Oct 199317740815.85$2,805
Sep 199334227315.03$5,140
Aug 199330324815.66$4,745
Jul 199318432015.46$2,845
Jun 199318329316.79$3,073
May 1993013317.68$0
Apr 199317915918.05$3,231
Mar 199318215218.14$3,301
Feb 199318219017.90$3,258
Jan 1993025216.93$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.

Jul 2015 — as filed, then multipliedworked
Oil                  150 bbl  × $ 48.15 =     $7,223
Casinghead gas         0 Mcf  × $  2.95 =         $0

────────────────────────────────────────────────────
Month total                                   $7,223

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. 08/O/26891 is the state's own key, not one this site invented.