CHALK, G. O. -C-

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 18989District 08Field 42971332Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$22.1 M
Jan 1993 – Apr 2012
Value, last 12 filed months
$2.6 M
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
NGPA9none

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
OilDisposition560,098 bbl$21,959,224
Casinghead gasProduction29,404 Mcf$124,304
Total$22,083,528

7,177 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 (15)

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 32.1005, -101.2828. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.09979, -101.28142 · 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%
15 of 15 wells
With a plug date
26.7%
4 of 15 wells
Median depth
3,224 ft
14 wells filed one
Completion to plug
19.0 years
median over 4 wells

What the state filed about each well

On the RRC proration schedule
15100.0%
A plug date is filed
426.7%
BothOn the schedule and plugged. Neither fact cancels the other.
426.7%
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, 14 of 15 wells. Median 3,224 ft, with the middle half between 3,193 and 3,308 ft; the shallowest is 3,149 ft and the deepest 4,510 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, 14 of 15 wells, Oct 1973 – Feb 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 1973 – Feb 2016
14 of 15 wells; 1 filed none
Plug dates filed
May 1996 – Jan 2026
4 of 15 wells; 11 filed none

Last completion to plug: a median of 19.0 years across the 4 wells that filed both dates, with the middle half between 14.2 years and 23.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

15 wells

42-227004961Yes
42-22734321293,325 ftFeb 2016Yes
42-2270253053,218 ftApr 2015Yes
42-22736244314,510 ftAug 2011Yes
42-22730326203,160 ftAug 2010Jan 2026Yes
42-22732184233,230 ftJul 2010Yes
42-22730333214,000 ftOct 2003Yes
42-22732689273,200 ftNov 1988Apr 1999Yes
42-22732185253,200 ftSep 1988Yes
42-22734320284,075 ftJul 1988Jul 2015Yes
42-22732437263,255 ftJul 1981Yes
42-22732183243,250 ftJul 1980Yes
42-2270050783,190 ftOct 1973Yes
42-2271006093,150 ftOct 1973Yes
42-22710061103,149 ftOct 1973May 1996Yes

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 20113,10686295.723.31$300,161
Oct 20113,85290684.983.65$330,649
Sep 20113,90728983.623.99$327,855
Aug 20113,81817583.404.15$319,147
Jul 20114,89222794.144.52$461,558
Jun 20114,63211992.904.64$430,865
May 20114,2857498.134.40$420,813
Apr 20112,9204105.964.33$309,421
Mar 20111,0021796.364.06$96,622
Feb 20112,1485885.644.18$184,197
Jan 20112,6278286.504.59$227,612
Dec 20102,69812085.734.35$231,821
Nov 20102,61214480.843.80$211,701
Oct 20102,53113178.103.51$198,131
Sep 20102,66523172.633.98$194,478
Aug 20102,59727573.684.42$192,562
Jul 20102,30019772.554.74$167,798
Jun 20102,53817570.364.91$179,433
May 20102,07720571.124.24$148,584
Apr 20103,07314981.694.12$251,648
Mar 20103,41626578.394.39$268,943
Feb 20103,36322673.585.44$248,680
Jan 20103,32226874.365.96$248,622
Dec 20093,44237571.445.48$247,953
Nov 20093,79136274.593.75$284,129
Oct 20093,27693772.544.11$241,492
Sep 20091,93121465.543.06$127,214
Aug 20091,99521267.423.22$135,185
Jul 20092,19410761.133.46$134,490
Jun 20091,7289866.163.90$114,706
May 20092,17911154.743.93$119,714
Apr 20092,13912746.773.59$100,497
Mar 20092,27616142.144.06$96,564
Feb 20092,18010732.814.63$72,022
Jan 20092,39312135.865.37$86,463
Dec 20082,34512137.105.98$87,723
Nov 20082,35115155.496.86$131,493
Oct 20082,35212975.246.92$177,857
Sep 20081,559100101.767.88$159,432
Aug 20082,608198114.228.48$299,565
Jul 20082,520174131.0811.39$332,303
Jun 20082,229139131.3313.03$294,546
May 20082,179186123.1711.57$270,540
Apr 20082,164153110.3110.45$240,310
Mar 20082,283198101.909.66$234,551
Feb 20082,25121092.538.77$210,127
Jan 20082,20119890.388.21$200,551
Dec 20072,02121488.337.30$180,078
Nov 20071,66311991.677.29$153,315
Oct 20071,78318082.856.92$148,968
Sep 20072,04820975.846.24$156,625
Aug 20072,00824569.066.39$140,238
Jul 20071,16017670.906.39$83,368
Jun 20072,01329562.007.55$127,033
May 20071,86422558.747.85$111,257
Apr 20071,94121259.617.81$117,358
Mar 20074869656.927.30$28,364
Feb 20071,79417255.108.22$100,263
Jan 20072,04517850.306.73$104,061
Dec 20062,00022556.656.92$114,857
Nov 20061,94424254.207.62$107,208
Oct 20061,99314654.906.01$110,294
Sep 20061,70711560.085.04$103,136
Aug 20061,5176768.717.34$104,725
Jul 20061,1105169.376.34$77,324
Jun 20061,5283766.286.38$101,512
May 20061,4984566.016.42$99,172
Apr 20061,79810664.397.36$116,553
Mar 20062,02610556.707.08$115,618
Feb 20061,90312657.597.75$110,570
Jan 20061,9235160.598.93$116,970
Dec 20051,7306054.9413.42$95,851
Nov 20051,7298554.6910.59$95,459
Oct 20052,0257258.3413.80$119,132
Sep 20052,0107061.4512.08$124,360
Aug 20051,84735661.519.80$117,097
Jul 20052,10811255.697.84$118,273
Jun 20052,16111952.337.38$113,963
May 20052,13316545.226.65$97,552
Apr 20051,92613549.207.36$95,753
Mar 20052,00211350.377.15$101,649
Feb 20051,74111545.226.31$79,454
Jan 20052,0287943.166.32$88,028
Dec 20041,91513639.866.75$77,250
Nov 20041,87711645.286.33$85,725
Oct 20041,80410249.706.52$90,323
Sep 20041,84210443.245.28$80,198
Aug 20041,99311142.375.55$85,060
Jul 20042,1165538.286.08$81,335
Jun 20042,2949736.106.43$83,437
May 20042,44512137.486.49$92,424
Apr 20041,9658334.475.86$68,220
Mar 20041,97310434.365.53$68,367
Feb 20042,06811732.455.51$67,751
Jan 20042,31013032.036.30$74,808
Dec 20032,21310530.266.30$67,627
Nov 20032,28811928.804.60$66,441
Oct 20032,33511628.174.76$66,329
Sep 20032,30613126.314.75$61,293
Aug 20032,34211929.765.13$70,308
Jul 20032,49512329.415.17$74,014
Jun 20032,50512428.565.98$72,285
May 20032,28616026.595.97$61,740
Apr 20032,17314126.675.41$58,716
Mar 20032,49813531.146.10$78,611
Feb 20032,34013333.487.93$79,397
Jan 20032,10213530.315.58$64,465
Dec 20022,00714526.914.85$54,712
Nov 20022,17916924.664.14$54,433
Oct 20022,78916926.464.23$74,512
Sep 20022,55015427.443.64$70,532
Aug 20022,79219125.963.16$73,085
Jul 20022,75919924.583.06$68,426
Jun 20022,54821523.733.34$61,182
May 20022,62123324.663.58$65,469
Apr 20022,57515923.653.51$61,457
Mar 20022,71912622.003.10$60,209
Feb 20022,43911018.222.38$44,700
Jan 20022,59412217.172.38$44,829
Dec 20012,59610616.932.36$44,201
Nov 20012,25712118.072.41$41,075
Oct 20012,03212819.782.53$40,517
Sep 20011,76012524.262.25$42,979
Aug 20012,27915724.873.05$57,158
Jul 20012,50815723.933.20$60,518
Jun 20012,41017124.563.82$59,844
May 20012,03614825.524.31$52,596
Apr 20012,0238924.685.34$50,402
Mar 20012,07214324.545.38$51,616
Feb 20011,95914227.755.77$55,181
Jan 20012,29018727.478.40$64,477
Dec 20002,54918226.889.12$70,177
Nov 20002,47217532.215.66$80,613
Oct 20002,46713931.235.15$77,760
Sep 20002,365131.875.19$75,378
Aug 20002,685129.644.54$79,588
Jul 20002,627028.534.09$74,948
Jun 20002,519029.304.40$73,807
May 20002,620127.263.68$71,425
Apr 20002,371124.513.12$58,116
Mar 20002,744128.422.86$77,987
Feb 20002,317127.622.73$63,998
Jan 20001,782125.272.48$45,034
Dec 19992,219124.282.42$53,880
Nov 19992,418123.192.43$56,076
Oct 19992,599120.982.80$54,530
Sep 19992,375121.752.62$51,659
Aug 19992,491119.262.88$47,980
Jul 19992,709117.892.37$48,466
Jun 19992,257115.942.36$35,979
May 19992,574115.792.32$40,646
Apr 19992,683115.102.21$40,516
Mar 19992,442112.471.84$30,454
Feb 19992,40219.981.82$23,974
Jan 19992,373110.381.90$24,634
Dec 19982,63019.201.77$24,198
Nov 19982,520110.892.19$27,445
Oct 19981,773112.421.97$22,023
Sep 19982,043112.592.08$25,723
Aug 19982,194111.301.91$24,794
Jul 19982,134111.742.24$25,055
Jun 19982,131111.242.24$23,955
May 19982,474112.622.21$31,224
Apr 19982,267113.042.51$29,564
Mar 19982,304112.802.31$29,494
Feb 19982,267113.952.30$31,627
Jan 19982,452114.702.15$36,047
Dec 19972,578116.322.41$42,075
Nov 19972,122118.193.09$38,602
Oct 19972,445119.253.15$47,069
Sep 19972,201117.742.95$39,049
Aug 19972,134117.862.55$38,116
Jul 19972,286117.582.25$40,190
Jun 19972,114117.242.26$36,448
May 19972,241118.972.31$42,514
Apr 19972,038117.882.08$36,442
Mar 19971,885118.951.94$35,723
Feb 19971,683120.492.21$34,487
Jan 19972,094023.483.54$49,167
Dec 19962,176123.32$50,744
Nov 19962,279121.97$50,070
Oct 19962,335123.31$54,429
Sep 19962,210122.22$49,106
Aug 19962,061120.26$41,756
Jul 19962,556119.55$49,970
Jun 19962,544118.73$47,649
May 19962,618119.43$50,868
Apr 19962,667121.51$57,367
Mar 19962,667119.38$51,686
Feb 19962,516116.98$42,722
Jan 19962,69044017.07$45,918
Dec 19951,78167917.19$30,615
Nov 19951,972116.00$31,552
Oct 19951,975115.43$30,474
Sep 19952,13068516.18$34,463
Aug 19952,85873115.92$45,499
Jul 19952,908115.24$44,318
Jun 19952,71960716.41$44,619
May 19952,78163817.56$48,834
Apr 19952,91465617.73$51,665
Mar 19952,93265616.44$48,202
Feb 19952,54262216.58$42,146
Jan 19953,12069515.92$49,670
Dec 19943,02173115.03$45,406
Nov 19943,275115.90$52,073
Oct 19943,099115.58$48,282
Sep 19942,912115.29$44,524
Aug 19942,582116.13$41,648
Jul 19943,259117.56$57,228
Jun 19942,989117.09$51,082
May 19942,965115.88$47,084
Apr 19943,327114.14$47,044
Mar 19943,402112.46$42,389
Feb 19942,439112.50$30,488
Jan 19943,173112.66$40,170
Dec 19933,572112.33$44,043
Nov 19934,401114.49$63,770
Oct 19934,214115.85$66,792
Sep 19933,818115.03$57,385
Aug 19933,882115.66$60,792
Jul 19934,150115.46$64,159
Jun 19934,081116.79$68,520
May 19934,178117.68$73,867
Apr 19934,197118.05$75,756
Mar 19934,384118.14$79,526
Feb 19934,485117.90$80,282
Jan 19934,833116.93$81,823

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                3,106 bbl  × $ 95.72 =   $297,306
Casinghead gas       862 Mcf  × $  3.31 =     $2,854

────────────────────────────────────────────────────
Month total                                 $300,161

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/18989 is the state's own key, not one this site invented.