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CHALK, G. O.-A-

Operated by CITATION OIL & GAS CORP. (P-5 154235) in the HOWARD GLASSCOCK (CONSOLIDATED) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 41210District 08Field 42971200Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$10.2 M
Dec 2011 – May 2026
Value, last 12 filed months
$500 k
at the published price for each month
Months reported
174
no gaps in the span
Streams
2
oil, casinghead gas

The HOWARD GLASSCOCK (CONSOLIDATED) field

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 231 leases and 2,805 wells, and the rule below applies to all of them.

Discovered
2011-11-22
as the register files it
Field class
Oil
the register's own label
Between wells
0 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 2014-01-07.

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: “P-15'S, ACRES LIST, AND LEASE PLATS REQUIRED.”

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
OilDisposition156,853 bbl$9,988,373
Casinghead gasProduction52,924 Mcf$172,735
Total$10,161,109

Wells on this lease (8)

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 32.1327, -101.2544. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

32.13249, -101.25428 · 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
25.0%
2 of 8 wells
With a plug date
25.0%
2 of 8 wells
Median depth
3,600 ft
8 wells filed one
Completion to plug
18.0 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
225.0%
A plug date is filed
225.0%
BothOn the schedule and plugged. Neither fact cancels the other.
225.0%
NeitherNo plug date, and not on the schedule.
675.0%

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, 8 of 8 wells. Median 3,600 ft, with the middle half between 3,050 and 4,282 ft; the shallowest is 3,000 ft and the deepest 7,823 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 8 wells, Oct 1980 – Sep 2016. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1980 – Sep 2016
8 of 8 wells
Plug dates filed
Jan 2015 – Apr 2017
2 of 8 wells; 6 filed none

Last completion to plug: a median of 18.0 years across the 2 wells that filed both dates, with the middle half between 9.9 years and 26.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

8 wells

42-22731070103,050 ftSep 2016——
42-22733458134,100 ftJul 2016——
42-22737852214,292 ftNov 2015——
42-22731164113,100 ftJul 2015Apr 2017Yes
42-2271005493,000 ftOct 2014——
42-22737672204,278 ftFeb 2014——
42-22733661147,823 ftJan 2014——
42-22732176123,050 ftOct 1980Jan 2015Yes

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 (174)

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

174 months

May 2026642267106.413.05$69,128
Apr 202661029998.932.87$61,205
Mar 202665725289.753.15$59,759
Feb 202658029363.503.75$37,929
Jan 202648420259.138.00$30,235
Dec 202554325856.664.41$31,905
Nov 202552330058.593.93$31,821
Oct 202550335659.383.30$31,045
Sep 202546635562.743.08$30,329
Aug 202558440863.933.01$38,565
Jul 202556341366.743.32$38,944
Jun 202556940066.483.13$39,079
May 202561451560.553.23$38,842
Apr 202555020662.363.54$35,028
Mar 202560536867.704.27$42,529
Feb 202555535770.884.34$40,888
Jan 202564373274.324.28$50,920
Dec 202468477068.993.12$49,593
Nov 202467973469.052.20$48,499
Oct 202469470971.372.28$51,148
Sep 202465277869.612.36$47,225
Aug 202464770375.632.06$50,383
Jul 202458785179.932.15$48,746
Jun 202464989578.082.63$53,031
May 202468976278.812.20$55,975
Apr 202464874784.451.66$55,963
Mar 202467725380.301.55$54,754
Feb 202465221076.091.78$49,985
Jan 202456135673.023.30$42,138
Dec 202375533671.262.61$54,679
Nov 202369425877.892.81$54,780
Oct 202365238785.443.09$56,902
Sep 202367036489.042.74$60,652
Aug 202373926580.522.67$60,213
Jul 202374027374.852.64$56,110
Jun 20237227268.962.26$49,952
May 20236458470.622.23$45,737
Apr 202359030378.122.24$46,769
Mar 202362821172.852.39$46,255
Feb 202350516275.112.47$38,330
Jan 20235365176.533.39$41,193
Dec 202246328576.415.73$37,011
Nov 202256969485.005.65$52,283
Oct 202260773487.185.86$57,222
Sep 202260896284.888.16$59,461
Aug 202269218494.529.13$67,087
Jul 2022691520101.587.54$74,114
Jun 2022703155115.097.98$82,145
May 2022709169109.378.43$78,969
Apr 2022698114104.226.84$73,525
Mar 202270417108.885.08$76,738
Feb 202266418391.054.86$61,346
Jan 202259823481.844.54$50,002
Dec 202172416571.323.90$52,279
Nov 202172718977.435.24$57,281
Oct 202183922579.795.71$68,229
Sep 202176322869.865.35$54,523
Aug 202182623766.024.22$55,533
Jul 202189421670.783.98$64,137
Jun 202185521069.493.38$60,124
May 202186016863.483.02$55,100
Apr 202188917760.362.76$54,148
Mar 202185722861.302.72$53,154
Feb 202168910557.805.55$40,407
Jan 202198813850.412.81$50,193
Dec 20206945044.642.68$31,114
Nov 20206326038.772.71$24,665
Oct 20205936636.972.48$22,087
Sep 202064215937.091.99$24,128
Aug 202063222239.982.39$25,797
Jul 202064912938.371.83$25,138
Jun 202089318434.901.69$31,477
May 202056220116.921.81$9,874
Apr 202065514114.751.80$9,916
Mar 202070119830.341.86$21,636
Feb 202065821349.881.98$33,243
Jan 202093824357.252.09$54,210
Dec 201987329159.012.30$52,186
Nov 201992738155.302.75$52,311
Oct 20191,15941153.472.42$62,966
Sep 20191,23243255.052.66$68,970
Aug 201990342953.112.30$48,947
Jul 201955132856.272.46$31,812
Jun 201948033352.782.49$26,164
May 201950933458.482.74$30,682
Apr 201954925262.632.75$35,077
Mar 201975540856.803.06$44,133
Feb 201960924850.852.79$31,660
Jan 201975923946.033.23$35,708
Dec 201870017446.594.19$33,341
Nov 201880130352.934.24$43,681
Oct 201876722761.443.40$47,896
Sep 201868938559.543.11$42,220
Aug 201875143059.403.07$45,928
Jul 201870143865.142.93$46,947
Jun 201878743860.183.08$48,709
May 201878831665.382.90$52,436
Apr 20181,05635363.842.90$68,439
Mar 20181,32744161.222.79$82,468
Feb 20181,00728861.782.77$63,009
Jan 20181,26930562.874.01$81,005
Dec 20171,19734957.272.92$69,572
Nov 20171,26935455.423.12$71,432
Oct 20171,47742249.292.98$74,060
Sep 20171,48318147.523.09$71,031
Aug 20171,49344545.373.00$69,074
Jul 20171,30544243.873.09$58,615
Jun 20171,45941642.493.09$63,277
May 20171,25142145.373.26$58,132
Apr 20171,47342947.933.21$71,979
Mar 20171,63843146.772.98$77,895
Feb 20171,49339750.452.95$76,494
Jan 20171,36683549.413.42$70,349
Dec 20161,16982148.763.72$60,057
Nov 20161,27339742.492.64$55,140
Oct 20161,34859446.193.09$64,100
Sep 20161,17291641.553.10$51,537
Aug 20161,2721,04541.442.92$55,768
Jul 20161,56632641.622.92$66,130
Jun 20161,23211145.352.69$56,169
May 20161,68341142.521.99$72,379
Apr 20161,50416736.561.99$55,319
Mar 20161,441033.011.79$47,567
Feb 20161,33329026.472.06$35,883
Jan 20161,15552227.352.36$32,823
Dec 20151,26660732.362.00$42,183
Nov 20151,46162338.792.17$58,022
Oct 20151,55080143.552.43$69,446
Sep 20151,49835042.992.76$65,364
Aug 20151,585040.162.87$63,654
Jul 20151,552048.152.95$74,729
Jun 20151,449056.152.88$81,361
May 20151,635055.212.96$90,268
Apr 20152,116049.822.71$105,419
Mar 20152,5511,49842.892.93$113,809
Feb 20151,936044.662.98$86,462
Jan 20151,737043.433.10$75,438
Dec 20142,078054.693.59$113,646
Nov 20142,349070.464.25$165,511
Oct 20142,285078.303.90$178,916
Sep 20141,610086.164.05$138,718
Aug 20141,78716789.394.04$160,414
Jul 20141,528096.564.18$147,544
Jun 20142,497098.164.74$245,106
May 20141,516094.734.73$143,611
Apr 20142,013095.944.81$193,127
Mar 20141,889095.895.06$181,136
Feb 20141,075097.406.19$104,705
Jan 2014498090.404.86$45,019
Dec 2013351091.824.35$32,229
Nov 2013570088.853.74$50,645
Oct 2013547097.423.78$53,289
Sep 2013631459104.113.72$67,400
Aug 2013813786104.253.52$87,524
Jul 2013580310102.523.72$60,614
Jun 201342039294.403.93$41,190
May 201328023394.834.15$27,519
Apr 20132746493.964.28$26,019
Mar 201328055593.623.91$28,385
Feb 201335036391.233.42$33,172
Jan 201334217291.603.42$31,915
Dec 2012296086.773.42$25,684
Nov 2012329286.953.62$28,614
Oct 20123559089.383.40$32,036
Sep 201240117594.672.92$38,473
Aug 20124407992.662.91$41,000
Jul 201242813585.133.02$36,843
Jun 201241715179.822.52$33,665
May 201249934691.612.49$46,574
Apr 2012566377101.652.00$58,287
Mar 2012603126105.052.22$63,625
Feb 2012538184101.102.57$54,865
Jan 2012428798.092.73$42,002
Dec 20114014896.873.24$39,000

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.

May 2026 — as filed, then multipliedworked
Oil                  642 bbl  × $106.41 =    $68,315
Casinghead gas       267 Mcf  × $  3.05 =       $813

────────────────────────────────────────────────────
Month total                                  $69,128

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/41210 is the state's own key, not one this site invented.