CHALK, SLOAN

Operated by CONOCOPHILLIPS COMPANY (P-5 172232) in the HOWARD-GLASSCOCK (GLORIETA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 19035District 08Field 42971332Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$7.8 M
Jan 1993 – Apr 2012
Value, last 12 filed months
$346 k
at the published price for each month
Months reported
232
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 131 leases and 850 wells, and the rule below applies to all of them.

Discovered
1925-12-31
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.

The Commission's schedule remark for this field reads: 11/22/11.

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
OilDisposition222,461 bbl$7,699,522
Casinghead gasProduction48,854 Mcf$116,013
Total$7,815,535

21,079 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 (10)

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 32.1279, -101.2518. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.12741, -101.25171 · 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%
10 of 10 wells
With a plug date
40.0%
4 of 10 wells
Median depth
3,200 ft
10 wells filed one
Completion to plug
26.4 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
10100.0%
A plug date is filed
440.0%
BothOn the schedule and plugged. Neither fact cancels the other.
440.0%
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

Total depth in feet, 10 of 10 wells. Median 3,200 ft, with the middle half between 3,000 and 3,200 ft; the shallowest is 2,930 ft and the deepest 3,850 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, 8 of 10 wells, Sep 1979 – May 2015. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Sep 1979 – May 2015
8 of 10 wells; 2 filed none
Plug dates filed
Apr 1999 – Jun 2026
4 of 10 wells; 6 filed none

Last completion to plug: a median of 26.4 years across the 2 wells that filed both dates, with the middle half between 19.3 years and 33.6 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-2270209172,976 ftApr 2014Yes
42-22702094103,200 ftJul 2023Yes
42-22730404203,000 ftMay 2015Yes
42-22734048253,200 ftMay 2015Yes
42-2273389422W3,200 ftMar 2010Yes
42-22730352193,700 ftMar 1987Apr 1999Yes
42-22734049243,200 ftAug 1986Yes
42-2270209392,930 ftSep 1985Jun 2026Yes
42-22730346173,000 ftJan 1981Yes
42-22730331183,850 ftSep 1979Yes

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 (232)

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

232 months

Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 201137616695.723.31$36,540
Oct 201146314484.983.65$39,871
Sep 201150212183.623.99$42,460
Aug 201159312383.404.15$49,967
Jul 201166414694.144.52$63,168
Jun 2011564092.904.64$52,396
May 2011623898.134.40$61,170
Apr 201180732105.964.33$85,648
Mar 20118683996.364.06$83,799
Feb 20116026785.644.18$51,835
Jan 201186314386.504.59$75,306
Dec 20108885885.734.35$76,380
Nov 20108618280.843.80$69,914
Oct 201087215078.103.51$68,630
Sep 201094916972.633.98$69,598
Aug 20101,11123773.684.42$82,906
Jul 201052217172.554.74$38,681
Jun 201039719570.364.91$28,890
May 201049919071.124.24$36,294
Apr 201059012081.694.12$48,692
Mar 201059520478.394.39$47,537
Feb 201069519873.585.44$52,216
Jan 201063824974.365.96$48,927
Dec 200966823271.445.48$48,994
Nov 200962921574.593.75$47,724
Oct 200975216472.544.11$55,224
Sep 20096498965.543.06$42,808
Aug 200989014367.423.22$60,464
Jul 200987110161.133.46$53,594
Jun 200989813266.163.90$59,926
May 20097698054.743.93$42,409
Apr 200968911746.773.59$32,644
Mar 200981312742.144.06$34,775
Feb 200980811432.814.63$27,039
Jan 200990911635.865.37$33,220
Dec 20087374337.105.98$27,600
Nov 20087603455.496.86$42,406
Oct 20087855475.246.92$59,437
Sep 200878945101.767.88$80,643
Aug 200882955114.228.48$95,155
Jul 200880450131.0811.39$105,958
Jun 200872854131.3313.03$96,312
May 200879287123.1711.57$98,558
Apr 2008858107110.3110.45$95,765
Mar 2008796100101.909.66$82,079
Feb 200886112092.538.77$80,721
Jan 200893310690.388.21$85,194
Dec 200793111688.337.30$83,082
Nov 20071,04210291.677.29$96,264
Oct 20071,02610682.856.92$85,738
Sep 20071,03511475.846.24$79,206
Aug 20071,01310869.066.39$70,648
Jul 20078596070.906.39$61,286
Jun 20079087862.007.55$56,885
May 20078017258.747.85$47,616
Apr 20077469459.617.81$45,203
Mar 20079228556.927.30$53,101
Feb 20078635955.108.22$48,036
Jan 20078707150.306.73$44,239
Dec 20067867256.656.92$45,025
Nov 20067227154.207.62$39,673
Oct 20067497754.906.01$41,583
Sep 20066878060.085.04$41,678
Aug 20066978068.717.34$48,478
Jul 20067646069.376.34$53,379
Jun 20066557266.286.38$43,873
May 200663112966.016.42$42,481
Apr 200657110264.397.36$37,517
Mar 20066079456.707.08$35,083
Feb 20065476957.597.75$32,037
Jan 20066296660.598.93$38,701
Dec 20055936554.9413.42$33,451
Nov 200566410854.6910.59$37,458
Oct 200567610158.3413.80$40,831
Sep 20056476561.4512.08$40,543
Aug 2005674061.519.80$41,458
Jul 200570211955.697.84$40,028
Jun 20056937652.337.38$36,826
May 200580412245.226.65$37,168
Apr 200568213249.207.36$34,526
Mar 200574012450.377.15$38,161
Feb 200560410345.226.31$27,963
Jan 20056405943.166.32$27,995
Dec 200464012939.866.75$26,381
Nov 200468013845.286.33$31,664
Oct 200472414149.706.52$36,901
Sep 200473915943.245.28$32,795
Aug 200479016142.375.55$34,366
Jul 200479617038.286.08$31,505
Jun 200473915536.106.43$27,675
May 200474416337.486.49$28,944
Apr 200481316034.475.86$28,961
Mar 200480916134.365.53$28,688
Feb 200464414332.455.51$21,686
Jan 200474215032.036.30$24,711
Dec 200375516030.266.30$23,855
Nov 200374416428.804.60$22,181
Oct 200380515428.174.76$23,410
Sep 200387117026.314.75$23,723
Aug 200385918729.765.13$26,523
Jul 200390019129.415.17$27,457
Jun 200384818928.565.98$25,350
May 20031,01418726.595.97$28,079
Apr 200387618026.675.41$24,336
Mar 200392818631.146.10$30,032
Feb 200389416733.487.93$31,255
Jan 200398416830.315.58$30,763
Dec 20021,02717426.914.85$28,481
Nov 2002990024.664.14$24,413
Oct 200288616526.464.23$24,141
Sep 200285613227.443.64$23,968
Aug 200278416825.963.16$20,884
Jul 200285316224.583.06$21,463
Jun 200296616223.733.34$23,464
May 200290217424.663.58$22,867
Apr 20021,17416823.653.51$28,355
Mar 20021,10312922.003.10$24,666
Feb 2002730018.222.38$13,301
Jan 200273514017.172.38$12,953
Dec 200188815716.932.36$15,405
Nov 200193014618.072.41$17,156
Oct 200197416819.782.53$19,691
Sep 200196716324.262.25$23,826
Aug 200192817424.873.05$23,611
Jul 200196217423.933.20$23,577
Jun 200178817424.563.82$20,019
May 20011,02016225.524.31$26,728
Apr 200197918024.685.34$25,122
Mar 200164816224.545.38$16,773
Feb 200168013727.755.77$19,660
Jan 2001766027.478.40$21,042
Dec 2000816026.889.12$21,934
Nov 20006312332.215.66$20,455
Oct 20009685931.235.15$30,534
Sep 2000846131.875.19$26,967
Aug 200078610829.644.54$23,787
Jul 200072918828.534.09$21,567
Jun 200079214929.304.40$23,861
May 200090416727.263.68$25,258
Apr 200093520424.513.12$23,553
Mar 200084727228.422.86$24,850
Feb 200060429727.622.73$17,492
Jan 200074730825.272.48$19,641
Dec 199968525724.282.42$17,255
Nov 199968022723.192.43$16,322
Oct 199973013120.982.80$15,683
Sep 199920218621.752.62$4,881
Aug 199953933919.262.88$11,356
Jul 199955628017.892.37$10,611
Jun 199960738415.942.36$10,583
May 199982749415.792.32$14,205
Apr 199997039315.102.21$15,515
Mar 199956645712.471.84$7,898
Feb 19998583789.981.82$9,250
Jan 199974323710.381.90$8,163
Dec 19981,0352809.201.77$10,019
Nov 199892832610.892.19$10,818
Oct 19981,07850712.421.97$14,387
Sep 19981,07543412.592.08$14,438
Aug 19981,17538411.301.91$14,010
Jul 199893610311.742.24$11,219
Jun 19981,0593811.242.24$11,988
May 19981,066112.622.21$13,455
Apr 19981,051113.042.51$13,708
Mar 19988418512.802.31$10,961
Feb 19985556113.952.30$7,883
Jan 19981,11931214.702.15$17,122
Dec 19971,16533316.322.41$19,816
Nov 19971,17034318.193.09$22,342
Oct 19971,17637119.253.15$23,807
Sep 19971,35238017.742.95$25,107
Aug 19971,27847617.862.55$24,041
Jul 199787751917.582.25$16,584
Jun 19971,01045017.242.26$18,428
May 19971,26147018.972.31$25,006
Apr 19971,18333517.882.08$21,850
Mar 199774611018.951.94$14,350
Feb 1997397120.492.21$8,137
Jan 1997614423.483.54$14,431
Dec 19961,05930923.32$24,696
Nov 19961,18357521.97$25,991
Oct 19961,33266823.31$31,049
Sep 19961,26564722.22$28,108
Aug 19961,31966720.26$26,723
Jul 19961,20566719.55$23,558
Jun 19961,18764518.73$22,233
May 19961,06082419.43$20,596
Apr 19961,58371421.51$34,050
Mar 19961,97879519.38$38,334
Feb 19961,95354816.98$33,162
Jan 19961,835017.07$31,323
Dec 19951,48856217.19$25,579
Nov 19951,63788316.00$26,192
Oct 19952,4332,50515.43$37,541
Sep 19951,61221716.18$26,082
Aug 19951,30414615.92$20,760
Jul 19951,34317815.24$20,467
Jun 19951,33828116.41$21,957
May 19951,38425317.56$24,303
Apr 19951,53524517.73$27,216
Mar 19951,47725116.44$24,282
Feb 19951,32021516.58$21,886
Jan 19951,16524915.92$18,547
Dec 19941,54525115.03$23,221
Nov 19941,41231615.90$22,451
Oct 19941,55737115.58$24,258
Sep 19941,54333615.29$23,592
Aug 19941,76135616.13$28,405
Jul 19941,86433617.56$32,732
Jun 19941,79135017.09$30,608
May 19941,85033215.88$29,378
Apr 19941,89028114.14$26,725
Mar 19941,82230312.46$22,702
Feb 19941,53026012.50$19,125
Jan 19941,61231712.66$20,408
Dec 19931,68634412.33$20,788
Nov 19931,77039214.49$25,647
Oct 19932,00136615.85$31,716
Sep 19931,86738715.03$28,061
Aug 19932,06842315.66$32,385
Jul 19932,25742915.46$34,893
Jun 19931,91538616.79$32,153
May 19931,92035117.68$33,946
Apr 19931,81628718.05$32,779
Mar 19931,73727918.14$31,509
Feb 19932,02529517.90$36,248
Jan 19931,89928716.93$32,150

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.

Nov 2011 — as filed, then multipliedworked
Oil                  376 bbl  × $ 95.72 =    $35,991
Casinghead gas       166 Mcf  × $  3.31 =       $550

────────────────────────────────────────────────────
Month total                                  $36,540

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/19035 is the state's own key, not one this site invented.