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HYMAN-CHALK

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 41243District 08Field 42971200Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$7.1 M
Dec 2011 – May 2026
Value, last 12 filed months
$455 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
OilDisposition101,020 bbl$6,925,146
Casinghead gasProduction68,045 Mcf$215,147
Total$7,140,292

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 32.1360, -101.2454. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.13595, -101.24506 · 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
2,663 ft
6 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
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, 6 of 8 wells. Median 2,663 ft, with the middle half between 2,400 and 3,132 ft; the shallowest is 2,400 ft and the deepest 4,207 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, 6 of 8 wells, Nov 1976 – Feb 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
Nov 1976 – Feb 2013
6 of 8 wells; 2 filed none
Plug dates filed
Jul 2015 – Jun 2023
2 of 8 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 20.3 years and 32.6 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

8 wells

42-227021053————
42-227021075————
42-22737042174,207 ftFeb 2013——
42-2273109510R2,400 ftApr 2009Jun 2023Yes
42-22733902133,200 ftDec 1985——
42-22702109102,926 ftJul 1979——
42-22731096112,400 ftNov 1976Jul 2015Yes
42-22731097122,400 ftNov 1976——

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 2026571207106.413.05$61,391
Apr 202654223298.932.87$54,286
Mar 202657519689.753.15$52,224
Feb 202646522863.503.75$30,383
Jan 202642111559.138.00$25,813
Dec 202547514356.664.41$27,545
Nov 202546716758.593.93$28,017
Oct 202550116159.383.30$30,281
Sep 202548115862.743.08$30,664
Aug 202558522463.933.01$38,074
Jul 202555622766.743.32$37,860
Jun 202556922266.483.13$38,522
May 202561828660.553.23$38,344
Apr 202558311562.363.54$36,763
Mar 202567220467.704.27$46,365
Feb 202561519970.884.34$44,455
Jan 202568140674.324.28$52,349
Dec 202472342868.993.12$51,216
Nov 202471937369.052.20$50,467
Oct 202473435471.372.28$53,193
Sep 202469038969.612.36$48,951
Aug 202469035275.632.06$52,911
Jul 202465842579.932.15$53,506
Jun 202469937278.082.63$55,558
May 202473030578.812.20$58,202
Apr 202468643484.451.66$58,653
Mar 202471715280.301.55$57,810
Feb 202469012676.091.78$52,727
Jan 202459421373.023.30$44,076
Dec 202379926371.262.61$57,623
Nov 202373120677.892.81$57,516
Oct 202363034485.443.09$54,889
Sep 202370132789.042.74$63,311
Aug 202375131680.522.67$61,315
Jul 202377925974.852.64$58,992
Jun 20237737368.962.26$53,471
May 202377223470.622.23$55,040
Apr 202367924278.122.24$53,585
Mar 202362319972.852.39$45,862
Feb 202347516275.112.47$36,077
Jan 20235025176.533.39$38,591
Dec 202239227876.415.73$31,545
Nov 202238141185.005.65$34,706
Oct 202252652587.185.86$48,935
Sep 202246068684.888.16$44,645
Aug 202248813194.529.13$47,321
Jul 2022577347101.587.54$61,229
Jun 2022589227115.097.98$69,599
May 2022637244109.378.43$71,726
Apr 202262366104.226.84$65,380
Mar 202261015108.885.08$66,493
Feb 202258030591.054.86$54,291
Jan 202256839081.844.54$48,255
Dec 202168927571.323.90$50,212
Nov 202161031577.435.24$48,882
Oct 202161737579.795.71$51,373
Sep 202156638069.865.35$41,574
Aug 202158739566.024.22$40,421
Jul 202163436070.783.98$46,308
Jun 202159335069.493.38$42,391
May 202161828063.483.02$40,076
Apr 202170429560.362.76$43,307
Mar 202169038061.302.72$43,329
Feb 202152917557.805.55$31,547
Jan 202173823050.412.81$37,849
Dec 20206368544.642.68$28,618
Nov 202060910538.772.71$23,895
Oct 202057711036.972.48$21,604
Sep 202060126537.091.99$22,819
Aug 202059637039.982.39$24,711
Jul 202071321038.371.83$27,741
Jun 202093031034.901.69$32,981
May 202058733016.921.81$10,531
Apr 202074524014.751.80$11,422
Mar 202079232530.341.86$24,633
Feb 202073836049.881.98$37,524
Jan 202084740057.252.09$49,329
Dec 201978049059.012.30$47,157
Nov 201974363055.302.75$42,821
Oct 201985368053.472.42$47,255
Sep 201990073055.052.66$51,485
Aug 201989875553.112.30$49,433
Jul 201974783056.272.46$44,076
Jun 201975983052.782.49$42,128
May 201968683558.482.74$42,405
Apr 201966363062.632.75$43,257
Mar 20197891,02556.803.06$47,954
Feb 201960962050.852.79$32,699
Jan 201976060046.033.23$36,920
Dec 201870144046.594.19$34,501
Nov 201869550052.934.24$38,905
Oct 201863640561.443.40$40,452
Sep 201854264559.543.11$34,275
Aug 201860770659.403.07$38,221
Jul 201849570265.142.93$34,302
Jun 201838763760.183.08$25,250
May 201874555565.382.90$50,318
Apr 201825255463.842.90$17,695
Mar 201829157661.222.79$19,420
Feb 201845147961.782.77$29,188
Jan 201857350862.874.01$38,061
Dec 201752958257.272.92$31,996
Nov 201749058955.423.12$28,993
Oct 201753570549.292.98$28,474
Sep 201745530147.523.09$22,551
Aug 201735774245.373.00$18,426
Jul 201729073843.873.09$15,001
Jun 201730669342.493.09$15,141
May 201735070345.373.26$18,174
Apr 201734971547.933.21$19,024
Mar 201735671946.772.98$18,795
Feb 201732866350.452.95$18,505
Jan 20174031,38349.413.42$24,640
Dec 20163981,39048.763.72$24,581
Nov 201646166842.492.64$21,354
Oct 20165111,11946.193.09$27,061
Sep 20164271,61241.553.10$22,740
Aug 20164501,73541.442.92$23,722
Jul 201633756341.622.92$15,672
Jun 201635033145.352.69$16,762
May 201638191842.521.99$18,028
Apr 201621127736.561.99$8,266
Mar 201650033.011.79$1,651
Feb 201615348426.472.06$5,049
Jan 20164421,03327.352.36$14,531
Dec 201555493332.362.00$19,795
Nov 20156511,05838.792.17$27,545
Oct 20157291,40243.552.43$35,150
Sep 201544051842.992.76$20,344
Aug 2015697040.162.87$27,992
Jul 2015510048.152.95$24,557
Jun 2015571056.152.88$32,062
May 2015478055.212.96$26,390
Apr 2015421049.822.71$20,974
Mar 20154191,75442.892.93$23,118
Feb 2015499044.662.98$22,285
Jan 2015662043.433.10$28,751
Dec 2014877054.693.59$47,963
Nov 2014437070.464.25$30,791
Oct 2014622078.303.90$48,703
Sep 2014450086.164.05$38,772
Aug 201444723989.394.04$40,922
Jul 2014498096.564.18$48,087
Jun 2014599098.164.74$58,798
May 2014631094.734.73$59,775
Apr 2014675095.944.81$64,760
Mar 2014744095.895.06$71,342
Feb 2014668097.406.19$65,063
Jan 2014817090.404.86$73,857
Dec 2013624091.824.35$57,296
Nov 2013678088.853.74$60,240
Oct 2013671097.423.78$65,369
Sep 2013671688104.113.72$72,416
Aug 20134651,166104.253.52$52,584
Jul 2013543459102.523.72$57,375
Jun 201335631094.403.93$34,826
May 201340343594.834.15$40,021
Apr 201340611393.964.28$38,632
Mar 201341485193.623.91$42,089
Feb 201343163591.233.42$41,492
Jan 201342130191.603.42$39,593
Dec 2012366086.773.42$31,758
Nov 2012442386.953.62$38,443
Oct 201246214489.383.40$41,783
Sep 201251130794.672.92$49,272
Aug 201258113992.662.91$54,240
Jul 201258821885.133.02$50,715
Jun 201255924679.822.52$45,239
May 201244641791.612.49$41,896
Apr 2012681528101.652.00$70,278
Mar 2012912176105.052.22$96,197
Feb 2012946258101.102.57$96,304
Jan 20127991098.092.73$78,401
Dec 20117687896.873.24$74,649

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                  571 bbl  × $106.41 =    $60,760
Casinghead gas       207 Mcf  × $  3.05 =       $630

────────────────────────────────────────────────────
Month total                                  $61,391

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/41243 is the state's own key, not one this site invented.