CHALK, G. O. -E-

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

Oil lease lease 2689District 08Field 42971001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$6.9 M
Jan 1993 – Apr 2012
Value, last 12 filed months
$338 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 285 leases and 3,948 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
400 ft
minimum
From a lease line
200 ft
minimum

A drilling unit in this field needs at least 5 acres. The field rule took effect on 2008-07-28.

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: HOWARD GLASSCOCK (CONSOLIDATED), EFFECTIVE 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
NGPA13none

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
OilDisposition195,439 bbl$6,766,895
Casinghead gasProduction69,113 Mcf$135,710
Total$6,902,605

35,302 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 (24)

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 32.1061, -101.2735. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.10679, -101.27281 · 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%
24 of 24 wells
With a plug date
58.3%
14 of 24 wells
Median depth
2,925 ft
24 wells filed one
Completion to plug
24.8 years
median over 13 wells

What the state filed about each well

On the RRC proration schedule
24100.0%
A plug date is filed
1458.3%
BothOn the schedule and plugged. Neither fact cancels the other.
1458.3%
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, 24 of 24 wells. Median 2,925 ft, with the middle half between 1,862 and 3,224 ft; the shallowest is 1,690 ft and the deepest 3,950 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, 23 of 24 wells, Jul 1928 – Dec 2024. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jul 1928 – Dec 2024
23 of 24 wells; 1 filed none
Plug dates filed
May 1992 – Mar 2021
14 of 24 wells; 10 filed none

Last completion to plug: a median of 24.8 years across the 13 wells that filed both dates, with the middle half between 10.7 years and 30.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

24 wells

42-2270050961,789 ftNov 1993Yes
42-22733026223,950 ftDec 2024Yes
42-22710077131,700 ftJan 2022Yes
42-22734434263,300 ftSep 2020Mar 2021Yes
42-2270251951,808 ftOct 2014Yes
42-22734330252,025 ftDec 2012Yes
42-22734439293,300 ftOct 2010Yes
42-22734438283,300 ftSep 1989Sep 1999Yes
42-22710076121,700 ftApr 1989Mar 1997Yes
42-22734318243,258 ftJan 1989Yes
42-22710078141,880 ftNov 1988Jul 2019Yes
42-2271007410 U3,100 ftAug 1988Apr 1999Yes
42-227025184 U3,181 ftNov 1987Yes
42-2270050673,215 ftAug 1984Yes
42-22732188203,250 ftNov 1980Aug 2005Yes
42-22730843182,000 ftNov 1975Mar 2006Yes
42-2270050883,195 ftOct 1973Feb 2015Yes
42-2271007511 U3,100 ftOct 1973May 1996Yes
42-2270252122,700 ftApr 1970Sep 1994Yes
42-22710931162,736 ftAug 1968Yes
42-22710934152,750 ftJul 1968Yes
42-2270242011,690 ftJul 1964Sep 1994Yes
42-227005049 U3,175 ftSep 1947May 1992Yes
42-2270216731,726 ftJul 1928Sep 1994Yes

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 20113731395.723.31$35,747
Oct 2011429484.983.65$36,471
Sep 20115221283.623.99$43,697
Aug 20115904883.404.15$49,405
Jul 20116261294.144.52$58,986
Jun 2011554192.904.64$51,471
May 2011635098.134.40$62,313
Apr 20112880105.964.33$30,516
Mar 2011125096.364.06$12,045
Feb 20115133485.644.18$44,075
Jan 20116113586.504.59$53,012
Dec 20106456285.734.35$55,565
Nov 20106248780.843.80$50,774
Oct 20105908578.103.51$46,377
Sep 201068315472.633.98$50,219
Aug 201066417073.684.42$49,675
Jul 201064713872.554.74$47,593
Jun 20106979570.364.91$49,507
May 201067216071.124.24$48,470
Apr 201063312981.694.12$52,242
Mar 201066921278.394.39$53,373
Feb 201065918173.585.44$49,474
Jan 201063921374.365.96$48,786
Dec 200933919971.445.48$25,309
Nov 200928010874.593.75$21,290
Oct 200966619172.544.11$49,097
Sep 200962517265.543.06$41,490
Aug 200964316867.423.22$43,892
Jul 200986310461.133.46$53,116
Jun 200976710366.163.90$51,146
May 20097939254.743.93$43,770
Apr 200968910046.773.59$32,583
Mar 20095017542.144.06$21,417
Feb 20097018532.814.63$23,394
Jan 20097209635.865.37$26,335
Dec 200869810237.105.98$26,505
Nov 200870012055.496.86$39,666
Oct 200875311075.246.92$57,417
Sep 200850588101.767.88$52,082
Aug 2008763160114.228.48$88,507
Jul 2008741140131.0811.39$98,725
Jun 2008782112131.3313.03$104,160
May 2008797152123.1711.57$99,926
Apr 2008779124110.3110.45$87,228
Mar 2008853160101.909.66$88,467
Feb 200886516592.538.77$81,486
Jan 200888514290.388.21$81,152
Dec 200780214788.337.30$71,914
Nov 200767010291.677.29$62,163
Oct 200766910682.856.92$56,160
Sep 200783212975.846.24$63,904
Aug 200784015069.066.39$58,969
Jul 200777413570.906.39$55,739
Jun 200777717162.007.55$49,465
May 200781714758.747.85$49,144
Apr 200778513259.617.81$47,824
Mar 20078509556.927.30$49,076
Feb 200775110855.108.22$42,267
Jan 200778810850.306.73$40,363
Dec 200688414456.656.92$51,075
Nov 200676014554.207.62$42,297
Oct 200689510054.906.01$49,737
Sep 20069349360.085.04$56,583
Aug 20061,0326568.717.34$71,386
Jul 20067625569.376.34$53,209
Jun 20066823766.286.38$45,439
May 20066834866.016.42$45,393
Apr 20067568864.397.36$49,327
Mar 20068028456.707.08$46,068
Feb 200676810757.597.75$45,058
Jan 20067774460.598.93$47,472
Dec 20056844854.9413.42$38,223
Nov 20056897054.6910.59$38,423
Oct 20058015658.3413.80$47,503
Sep 20057965661.4512.08$49,591
Aug 2005730061.519.80$44,902
Jul 20058338955.697.84$47,088
Jun 20058569452.337.38$45,488
May 200590913245.226.65$41,983
Apr 200589010749.207.36$44,576
Mar 20058719050.377.15$44,516
Feb 20058659245.226.31$39,696
Jan 20057796243.166.32$34,014
Dec 200493510839.866.75$37,998
Nov 20049649445.286.33$44,245
Oct 20041,0498049.706.52$52,657
Sep 20041,1068243.245.28$48,257
Aug 20041,0039042.375.55$42,997
Jul 20048474038.286.08$32,667
Jun 20042347236.106.43$8,911
May 20042179137.486.49$8,724
Apr 20041708434.475.86$6,352
Mar 200415710334.365.53$5,964
Feb 200416511632.455.51$5,993
Jan 200418413032.036.30$6,712
Dec 200317610530.266.30$5,987
Nov 200318211828.804.60$5,784
Oct 200318610928.174.76$5,758
Sep 200318112426.314.75$5,351
Aug 20039611129.765.13$3,426
Jul 20038512329.415.17$3,136
Jun 20038311628.565.98$3,065
May 200331411626.595.97$9,042
Apr 200329811126.675.41$8,548
Mar 200331510131.146.10$10,425
Feb 20032679933.487.93$9,724
Jan 200329111630.315.58$9,468
Dec 200227811526.914.85$8,039
Nov 200229813024.664.14$7,886
Oct 200214617426.464.23$4,599
Sep 200213416027.443.64$4,259
Aug 200215315725.963.16$4,469
Jul 200215516424.583.06$4,312
Jun 200214417423.733.34$3,998
May 200213922124.663.58$4,220
Apr 200213815023.653.51$3,791
Mar 200220212522.003.10$4,832
Feb 200218511018.222.38$3,632
Jan 200219112017.172.38$3,565
Dec 200120312016.932.36$3,721
Nov 200119212018.072.41$3,758
Oct 200118513519.782.53$4,001
Sep 200154512524.262.25$13,503
Aug 200162015524.873.05$15,893
Jul 200147116023.933.20$11,783
Jun 200154116524.563.82$13,918
May 200150214025.524.31$13,414
Apr 20014728524.685.34$12,102
Mar 200149113524.545.38$12,775
Feb 200148413527.755.77$14,210
Jan 200161619027.478.40$18,517
Dec 200055019026.889.12$16,517
Nov 200058416532.215.66$19,744
Oct 200061513531.235.15$19,901
Sep 200059445031.875.19$21,265
Aug 200081647229.644.54$26,329
Jul 200081149728.534.09$25,170
Jun 200075651729.304.40$24,424
May 200056953727.263.68$17,487
Apr 200069239724.513.12$18,198
Mar 200075233328.422.86$22,324
Feb 200065727427.622.73$18,893
Jan 200071029425.272.48$18,671
Dec 199969628424.282.42$17,587
Nov 199983233923.192.43$20,119
Oct 19991,02842120.982.80$22,748
Sep 199976845421.752.62$17,893
Aug 19991,00554719.262.88$20,929
Jul 199987451917.892.37$16,867
Jun 199990445515.942.36$15,485
May 199999650115.792.32$16,890
Apr 199983741515.102.21$13,555
Mar 199985043012.471.84$11,390
Feb 19997123879.981.82$7,809
Jan 199989938910.381.90$10,071
Dec 19981,0534629.201.77$10,507
Nov 199873338610.892.19$8,826
Oct 199850833912.421.97$6,977
Sep 199847233812.592.08$6,646
Aug 199896048211.301.91$11,767
Jul 199876939511.742.24$9,912
Jun 19981,05244311.242.24$12,816
May 199885349212.622.21$11,850
Apr 19981,03345813.042.51$14,618
Mar 199892925012.802.31$12,469
Feb 199877423313.952.30$11,333
Jan 199888723914.702.15$13,554
Dec 199781530116.322.41$14,027
Nov 199796044418.193.09$18,834
Oct 19971,17055719.253.15$24,277
Sep 199779451717.742.95$15,613
Aug 199789761117.862.55$17,581
Jul 19971,24867417.582.25$23,454
Jun 19971,10547217.242.26$20,116
May 19971,09553618.972.31$22,010
Apr 19971,22745017.882.08$22,876
Mar 19971,26939518.951.94$24,814
Feb 19971,03341320.492.21$22,077
Jan 19971,06826923.483.54$26,029
Dec 19961,23335123.32$28,754
Nov 19961,22460221.97$26,891
Oct 19961,19768723.31$27,902
Sep 19961,27060822.22$28,219
Aug 19961,08561220.26$21,982
Jul 19961,26170819.55$24,653
Jun 19961,20471518.73$22,551
May 19961,32175619.43$25,667
Apr 19961,22866221.51$26,414
Mar 19961,20172419.38$23,275
Feb 19961,11166116.98$18,865
Jan 19961,350717.07$23,045
Dec 19951,82053417.19$31,286
Nov 19951,6772,32716.00$26,832
Oct 19952,0263,50415.43$31,261
Sep 19951,88992316.18$30,564
Aug 19951,69610515.92$27,000
Jul 19951,59188915.24$24,247
Jun 19951,4882616.41$24,418
May 19951,6782017.56$29,466
Apr 19951,5881517.73$28,155
Mar 19951,5971516.44$26,255
Feb 19951,360716.58$22,549
Jan 19951,525815.92$24,278
Dec 19941,567715.03$23,552
Nov 19941,71678415.90$27,284
Oct 19941,72990415.58$26,938
Sep 19941,40374315.29$21,452
Aug 19941,76677816.13$28,486
Jul 19941,78456617.56$31,327
Jun 19941,78565817.09$30,506
May 19941,51879915.88$24,106
Apr 19941,46381614.14$20,687
Mar 19941,59878812.46$19,911
Feb 19941,58670312.50$19,825
Jan 19941,79992412.66$22,775
Dec 19931,76993612.33$21,812
Nov 19931,6461,00714.49$23,851
Oct 19931,8081,18915.85$28,657
Sep 19931,82790915.03$27,460
Aug 19931,76665415.66$27,656
Jul 19931,97685015.46$30,549
Jun 19932,6331,03516.79$44,208
May 19932,47384517.68$43,723
Apr 19932,45779118.05$44,349
Mar 19932,23394318.14$40,507
Feb 19931,7931,05717.90$32,095
Jan 19931,9341,15016.93$32,743

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                  373 bbl  × $ 95.72 =    $35,704
Casinghead gas        13 Mcf  × $  3.31 =        $43

────────────────────────────────────────────────────
Month total                                  $35,747

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/2689 is the state's own key, not one this site invented.