CHALK, G. O. -G-

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 19031District 08Field 42971332Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$14.3 M
Jan 1993 – Apr 2012
Value, last 12 filed months
$971 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
NGPA7none

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
OilDisposition422,824 bbl$13,989,575
Casinghead gasProduction80,222 Mcf$268,874
Total$14,258,450

24,448 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 (22)

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 32.1204, -101.2547. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

32.12037, -101.25448 · 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%
22 of 22 wells
With a plug date
40.9%
9 of 22 wells
Median depth
3,100 ft
22 wells filed one
Completion to plug
14.5 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
22100.0%
A plug date is filed
940.9%
BothOn the schedule and plugged. Neither fact cancels the other.
940.9%
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, 22 of 22 wells. Median 3,100 ft, with the middle half between 2,998 and 3,200 ft; the shallowest is 2,880 ft and the deepest 4,300 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, 21 of 22 wells, Oct 1966 – Jan 2025. 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 1966 – Jan 2025
21 of 22 wells; 1 filed none
Plug dates filed
Jun 1991 – Jul 2025
9 of 22 wells; 13 filed none

Last completion to plug: a median of 14.5 years across the 8 wells that filed both dates, with the middle half between 21 months and 31.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

22 wells

42-2270203172,917 ftDec 2016Yes
42-22730436313,100 ftJan 2025Jul 2025Yes
42-22733089383,100 ftMar 2024Yes
42-22730772324,300 ftSep 2019Yes
42-22733078373,100 ftJul 2019Yes
42-2273389840W3,200 ftAug 2015Yes
42-22732987333,100 ftApr 2013Apr 2014Yes
42-22702135102,880 ftDec 2011Dec 2013Yes
42-2270213492,975 ftJul 2010Yes
42-2273389739W3,200 ftMar 2010Yes
42-22734094463,250 ftDec 2009Yes
42-22730222243,100 ftJun 1993Yes
42-22730276253,050 ftSep 1987Yes
42-22734131493,205 ftApr 1987Jun 2023Yes
42-22733075363,100 ftAug 1983Jun 1993Yes
42-22733007353,100 ftApr 1983Yes
42-22732990343,100 ftFeb 1983Yes
42-22702033123,235 ftMar 1975Jan 2005Yes
42-2270203052,981 ftJan 1975Oct 2015Yes
42-22730343293,720 ftAug 1974Yes
42-22702138142,903 ftMay 1972Jun 1991Yes
42-22702136112,921 ftOct 1966Yes

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 20111,28142095.723.31$124,008
Oct 20111,47039484.983.65$126,358
Sep 20111,34630683.623.99$113,772
Aug 20111,55329983.404.15$130,761
Jul 20111,57132994.144.52$149,380
Jun 20111,767092.904.64$164,154
May 20111,6532098.134.40$162,297
Apr 20111,55165105.964.33$164,626
Mar 20111,4197996.364.06$137,055
Feb 20111,15416585.644.18$99,518
Jan 20111,49531086.504.59$130,740
Dec 20101,38512685.734.35$119,284
Nov 20101,47120780.843.80$119,701
Oct 20101,26637978.103.51$100,204
Sep 201096235072.633.98$71,263
Aug 20101,06847973.684.42$80,807
Jul 20101,07544372.554.74$80,090
Jun 20101,10247770.364.91$79,879
May 20101,39243471.124.24$100,837
Apr 20101,29522681.694.12$106,720
Mar 20101,45742778.394.39$116,088
Feb 20101,50336273.585.44$112,561
Jan 20101,41946074.365.96$108,260
Dec 20091,54842471.445.48$112,914
Nov 20091,40436574.593.75$106,094
Oct 20091,36432672.544.11$100,285
Sep 20091,06719665.543.06$70,532
Aug 20091,70431767.423.22$115,904
Jul 20091,71122561.133.46$105,373
Jun 20091,78531366.163.90$119,315
May 20091,32517954.743.93$73,233
Apr 20091,48028146.773.59$70,228
Mar 20091,59729242.144.06$68,483
Feb 20091,75427832.814.63$58,837
Jan 20091,57126635.865.37$57,765
Dec 20081,27211437.105.98$47,873
Nov 20081,1737655.496.86$65,611
Oct 20081,22412475.246.92$92,952
Sep 20081,02194101.767.88$104,637
Aug 20081,067121114.228.48$122,899
Jul 20081,025108131.0811.39$135,587
Jun 2008997116131.3313.03$132,448
May 20081,128204123.1711.57$141,297
Apr 20081,182237110.3110.45$132,864
Mar 20081,226240101.909.66$127,249
Feb 20081,18725792.538.77$112,087
Jan 20081,23523290.388.21$113,523
Dec 20071,19724988.337.30$107,549
Nov 20071,21820191.677.29$113,120
Oct 20071,22021582.856.92$102,565
Sep 20071,22322675.846.24$94,164
Aug 20071,30523369.066.39$91,612
Jul 20071,26014370.906.39$90,247
Jun 20071,26316562.007.55$79,551
May 20071,35215658.747.85$80,641
Apr 20071,28519759.617.81$78,136
Mar 20071,33018256.927.30$77,033
Feb 20071,16412855.108.22$65,188
Jan 20071,33715250.306.73$68,274
Dec 20061,34615956.656.92$77,351
Nov 20061,18817154.207.62$65,692
Oct 20061,27718354.906.01$71,208
Sep 20061,25519360.085.04$76,373
Aug 20061,36720968.717.34$95,461
Jul 20061,46415369.376.34$102,528
Jun 20061,3779966.286.38$91,900
May 20061,3957366.016.42$92,553
Apr 20061,1296064.397.36$73,138
Mar 20061,14313356.707.08$65,750
Feb 20061,03717557.597.75$61,077
Jan 20061,06717860.598.93$66,240
Dec 200594514954.9413.42$53,917
Nov 200594924454.6910.59$54,484
Oct 200579626358.3413.80$50,067
Sep 200591417061.4512.08$58,219
Aug 2005952061.519.80$58,558
Jul 200599231055.697.84$57,676
Jun 200598320152.337.38$52,924
May 20051,33032045.226.65$62,271
Apr 20051,10334149.207.36$56,778
Mar 20051,13432050.377.15$59,409
Feb 200597326745.226.31$45,684
Jan 20051,32016043.166.32$57,983
Dec 20041,31935439.866.75$54,965
Nov 20041,40337845.286.33$65,921
Oct 20041,38738549.706.52$71,442
Sep 20041,39241243.245.28$62,367
Aug 20041,18441942.375.55$52,492
Jul 20041,17044338.286.08$47,483
Jun 20041,14540436.106.43$43,933
May 20041,16941937.486.49$46,535
Apr 20041,24337234.475.86$45,026
Mar 20041,26837634.365.53$45,648
Feb 20041,21633332.455.51$41,294
Jan 20041,43335432.036.30$48,129
Dec 20031,45837330.266.30$46,470
Nov 20031,43838528.804.60$43,184
Oct 20031,59836728.174.76$46,762
Sep 20031,76340226.314.75$48,294
Aug 20031,80443729.765.13$55,929
Jul 20031,55344529.415.17$47,975
Jun 20031,52943328.565.98$46,259
May 20031,61942226.595.97$45,570
Apr 20031,53439826.675.41$43,064
Mar 20031,62743131.146.10$53,292
Feb 20031,56837433.487.93$55,461
Jan 20031,86939230.315.58$58,838
Dec 20021,82440626.914.85$51,054
Nov 20021,454024.664.14$35,856
Oct 20021,80738526.464.23$49,441
Sep 20021,61730827.443.64$45,490
Aug 20021,70137725.963.16$45,351
Jul 20021,60737824.583.06$40,657
Jun 20021,62336623.733.34$39,736
May 20021,79540624.663.58$45,720
Apr 20021,75642023.653.51$43,005
Mar 20021,63932222.003.10$37,057
Feb 20021,753018.222.38$31,940
Jan 20021,74334017.172.38$30,735
Dec 20011,69138316.932.36$29,534
Nov 20011,67736218.072.41$31,174
Oct 20011,77440519.782.53$36,114
Sep 20011,70238724.262.25$42,162
Aug 20011,66038624.873.05$42,463
Jul 20011,77240323.933.20$43,692
Jun 20011,88040624.563.82$47,725
May 20011,74332525.524.31$45,881
Apr 20011,94341124.685.34$50,146
Mar 20011,90035324.545.38$48,524
Feb 20011,38828227.755.77$40,143
Jan 20011,2941,12227.478.40$44,970
Dec 20001,4631,16426.889.12$49,944
Nov 20001,44779932.215.66$51,129
Oct 20001,86168031.235.15$61,618
Sep 20001,47360031.875.19$50,056
Aug 20001,55565929.644.54$49,083
Jul 20001,71466328.534.09$51,612
Jun 20001,40442929.304.40$43,024
May 20001,66954527.263.68$47,502
Apr 20001,66629424.513.12$41,750
Mar 20001,5118828.422.86$43,194
Feb 20002,24010727.622.73$62,161
Jan 20001,4007725.272.48$35,569
Dec 19991,24613124.282.42$30,570
Nov 19991,26720323.192.43$29,876
Oct 19991,75237920.982.80$37,820
Sep 19992,77842321.752.62$61,529
Aug 19992,16639319.262.88$42,847
Jul 19991,79432417.892.37$32,863
Jun 19991,77127615.942.36$28,882
May 19991,97435415.792.32$31,991
Apr 19991,83427715.102.21$28,305
Mar 19992,21927812.471.84$28,182
Feb 19991,7712639.981.82$18,153
Jan 19991,91829010.381.90$20,460
Dec 19981,9132929.201.77$18,117
Nov 19982,18934010.892.19$24,581
Oct 19982,14837112.421.97$27,409
Sep 19982,35734712.592.08$30,397
Aug 19982,47637511.301.91$28,694
Jul 19982,19034211.742.24$26,476
Jun 19982,26337411.242.24$26,273
May 19982,31942412.622.21$30,201
Apr 19982,18237913.042.51$29,403
Mar 19982,06738412.802.31$27,344
Feb 19982,03130113.952.30$29,024
Jan 19982,04632614.702.15$30,779
Dec 19972,16530016.322.41$36,056
Nov 19972,42034818.193.09$45,095
Oct 19972,77940019.253.15$54,756
Sep 19972,08243417.742.95$38,217
Aug 19971,99141117.862.55$36,609
Jul 19972,64426017.582.25$47,066
Jun 19972,16731417.242.26$38,068
May 19972,34337618.972.31$45,315
Apr 19972,60743417.882.08$47,517
Mar 19972,91645418.951.94$56,139
Feb 19972,55931020.492.21$53,118
Jan 19972,86842123.483.54$68,831
Dec 19962,90043323.32$67,628
Nov 19962,95450821.97$64,899
Oct 19962,98750023.31$69,627
Sep 19962,87349122.22$63,838
Aug 19962,62446020.26$53,162
Jul 19962,90145219.55$56,715
Jun 19962,72346918.73$51,002
May 19963,03552119.43$58,970
Apr 19962,93947221.51$63,218
Mar 19962,69142819.38$52,152
Feb 19962,95839516.98$50,227
Jan 19962,93635317.07$50,118
Dec 19952,69838417.19$46,379
Nov 19952,69551016.00$43,120
Oct 19952,95883015.43$45,642
Sep 19952,90262816.18$46,954
Aug 19953,38771915.92$53,921
Jul 19953,07052915.24$46,787
Jun 19952,96745316.41$48,688
May 19952,67756217.56$47,008
Apr 19952,86252017.73$50,743
Mar 19953,07540816.44$50,553
Feb 19952,66442016.58$44,169
Jan 19952,90947015.92$46,311
Dec 19943,38855615.03$50,922
Nov 19942,75844415.90$43,852
Oct 19942,88554015.58$44,948
Sep 19942,78055015.29$42,506
Aug 19942,95860316.13$47,713
Jul 19943,34464517.56$58,721
Jun 19943,09459517.09$52,876
May 19943,52654815.88$55,993
Apr 19943,45662814.14$48,868
Mar 19943,31252312.46$41,268
Feb 19942,84567312.50$35,563
Jan 19942,69454412.66$34,106
Dec 19932,75335012.33$33,944
Nov 19932,98142514.49$43,195
Oct 19933,58067915.85$56,743
Sep 19933,35955715.03$50,486
Aug 19933,35255115.66$52,492
Jul 19933,32450115.46$51,389
Jun 19933,28147416.79$55,088
May 19932,83450917.68$50,105
Apr 19932,76943218.05$49,980
Mar 19932,86441418.14$51,953
Feb 19932,86439517.90$51,266
Jan 19933,09939716.93$52,466

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                1,281 bbl  × $ 95.72 =   $122,617
Casinghead gas       420 Mcf  × $  3.31 =     $1,391

────────────────────────────────────────────────────
Month total                                 $124,008

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/19031 is the state's own key, not one this site invented.