CHALK, OTIS

Operated by APACHE CORPORATION (P-5 27200) 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 18996District 08Field 42971332Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$32.6 M
Jan 1993 – Oct 2015
Value, last 12 filed months
$0
at the published price for each month
Months reported
274
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.

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
OilDisposition797,263 bbl$31,416,960
Casinghead gasProduction260,963 Mcf$1,194,290
Total$32,611,250

14,453 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 (21)

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 32.1058, -101.2898. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

32.10574, -101.28955 · 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%
21 of 21 wells
With a plug date
14.3%
3 of 21 wells
Median depth
3,400 ft
20 wells filed one
Completion to plug
25.1 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
21100.0%
A plug date is filed
314.3%
BothOn the schedule and plugged. Neither fact cancels the other.
314.3%
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, 20 of 21 wells. Median 3,400 ft, with the middle half between 3,320 and 3,502 ft; the shallowest is 3,050 ft and the deepest 3,930 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, 18 of 21 wells, Jun 1938 – Jan 2012. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 1938 – Jan 2012
18 of 21 wells; 3 filed none
Plug dates filed
Aug 2005 – Nov 2016
3 of 21 wells; 18 filed none

Last completion to plug: a median of 25.1 years across the 2 wells that filed both dates, with the middle half between 15.5 years and 34.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

21 wells

42-227041036Yes
42-2270424523,200 ftYes
42-2270439183,180 ftSep 2013Yes
42-2273571823W3,400 ftJan 2012Yes
42-2273571422W3,400 ftSep 2011Yes
42-2273571724W3,400 ftAug 2011Yes
42-2273572025W3,400 ftAug 2011Yes
42-2273571521W3,400 ftJun 2011Yes
42-2273571620W3,400 ftJun 2011Yes
42-2273567914193,402 ftMar 2010Yes
42-2273567814183,400 ftNov 2008Yes
42-22733267133,800 ftJan 2002Yes
42-2273507114163,800 ftDec 2001Yes
42-2273507013153,800 ftJul 2001Yes
42-2270422533,900 ftOct 1999Aug 2005Yes
42-227353215W3,360 ftDec 1998Yes
42-2273507213173,370 ftJan 1998Yes
42-227303582W3,200 ftAug 1995Yes
42-22730366123,930 ftJul 1972Nov 2016Yes
42-2270410493,050 ftOct 1966Yes
42-2270410273,200 ftJun 1938Yes

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 (274)

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

274 months

Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
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 20112,864095.723.31$274,142
Oct 20112,7991,82984.983.65$244,532
Sep 20112,8091,88283.623.99$242,390
Aug 20113,300083.404.15$275,220
Jul 20113,1144394.144.52$293,346
Jun 20113,264092.904.64$303,226
May 20113,3363498.134.40$327,511
Apr 20112,946740105.964.33$315,365
Mar 20112,75150396.364.06$267,127
Feb 20112,4062,12085.644.18$214,911
Jan 20113,7792,57486.504.59$338,695
Dec 20103,3442,55785.734.35$297,798
Nov 20103,2812,54380.843.80$274,888
Oct 20103,3762,69378.103.51$273,115
Sep 20102,9522,40672.633.98$223,978
Aug 20102,5442,19773.684.42$197,151
Jul 20102,6672,45272.554.74$205,105
Jun 20102,8422,94170.364.91$214,405
May 20102,9223,09271.124.24$220,908
Apr 20102,5092,87981.694.12$216,829
Mar 20102,1662,45578.394.39$180,567
Feb 20102,5483,51673.585.44$206,617
Jan 20102,8991,91674.365.96$226,997
Dec 20092,8461,89971.445.48$213,732
Nov 20092,8432,55074.593.75$221,626
Oct 20092,6121,17872.544.11$194,316
Sep 20092,4491,09665.543.06$163,866
Aug 20092,5861,09667.423.22$177,876
Jul 20092,58313961.133.46$158,380
Jun 20092,47395966.163.90$167,349
May 20092,6261,52054.743.93$149,714
Apr 20092,6471,86146.773.59$130,477
Mar 20092,6131,18842.144.06$114,934
Feb 20093,5381,70532.814.63$123,981
Jan 20093,22873135.865.37$119,682
Dec 20083,84388237.105.98$147,847
Nov 20084,0262,13255.496.86$238,029
Oct 20083,00789075.246.92$232,407
Sep 20083,083473101.767.88$317,452
Aug 20082,861894114.228.48$334,367
Jul 20083,4871,101131.0811.39$469,616
Jun 20082,497921131.3313.03$339,934
May 20082,6361,017123.1711.57$336,447
Apr 20082,8051,155110.3110.45$321,495
Mar 20082,7391,326101.909.66$291,919
Feb 20082,6821,36192.538.77$260,102
Jan 20082,8271,17490.388.21$265,138
Dec 20072,7101,09388.337.30$247,355
Nov 20072,1611,02191.677.29$205,544
Oct 20072,8711,14682.856.92$245,795
Sep 20073,19793675.846.24$248,305
Aug 20073,5231,27169.066.39$251,417
Jul 20073,48355670.906.39$250,496
Jun 20073,45870562.007.55$219,718
May 20073,04367258.747.85$184,019
Apr 20073,13389859.617.81$193,767
Mar 20073,36114956.927.30$192,396
Feb 20073,62119755.108.22$201,136
Jan 20073,72829150.306.73$189,476
Dec 20063,76290456.656.92$219,372
Nov 20063,6461,14954.207.62$206,366
Oct 20063,8311,08154.906.01$216,823
Sep 20064,02569060.085.04$245,298
Aug 20063,39193668.717.34$239,866
Jul 20063,9981,13169.376.34$284,515
Jun 20064,1001,36466.286.38$280,456
May 20063,8541,11666.016.42$261,573
Apr 20063,8981,31964.397.36$260,701
Mar 20064,1411,35956.707.08$244,420
Feb 20064,00954257.597.75$235,079
Jan 20064,24870060.598.93$263,640
Dec 20053,91182054.9413.42$225,871
Nov 20053,8901,22354.6910.59$225,694
Oct 20054,06431558.3413.80$241,439
Sep 20053,81982061.4512.08$244,582
Aug 20054,5431,51761.519.80$294,302
Jul 20054,3181,39955.697.84$251,443
Jun 20054,6651,56252.337.38$255,649
May 20054,7811,58945.226.65$226,766
Apr 20054,5221,28449.207.36$231,933
Mar 20054,84831850.377.15$246,469
Feb 20054,1111,10745.226.31$192,887
Jan 20054,5941,14243.166.32$205,497
Dec 20043,8791,06939.866.75$161,834
Nov 20044,76461745.286.33$219,620
Oct 20044,7351,66249.706.52$246,158
Sep 20044,8981,65243.245.28$220,519
Aug 20044,6081,85642.375.55$205,543
Jul 20045,3751,91238.286.08$217,388
Jun 20045,1811,90836.106.43$199,308
May 20045,7052,00637.486.49$226,852
Apr 20045,4061,72434.475.86$196,445
Mar 20045,8871,88634.365.53$212,707
Feb 20045,4981,36832.455.51$185,947
Jan 20046,0221,74132.036.30$203,852
Dec 20036,1511,78530.266.30$197,378
Nov 20036,0102,27128.804.60$183,524
Oct 20036,4472,57628.174.76$193,873
Sep 20035,7421,87226.314.75$159,963
Aug 20036,3022,98729.765.13$202,870
Jul 20036,8033,31029.415.17$217,192
Jun 20036,2983,22428.565.98$199,160
May 20036,4433,34626.595.97$191,304
Apr 20036,2272,62826.675.41$180,284
Mar 20037,2822,68731.146.10$243,142
Feb 20036,4411,96533.487.93$231,219
Jan 20037,2901,36330.315.58$228,568
Dec 20026,5282,66226.914.85$188,589
Nov 20027,1213,52824.664.14$190,199
Oct 20026,2722,86426.464.23$178,069
Sep 20027,2403,07927.443.64$209,858
Aug 20027,5573,29925.963.16$206,618
Jul 20027,5863,52724.583.06$197,263
Jun 20026,4013,40423.733.34$163,259
May 20025,4603,66824.663.58$147,790
Apr 20025,5012,99623.653.51$140,622
Mar 20024,2701,90722.003.10$99,857
Feb 20023,4992,50118.222.38$69,693
Jan 20024,2734,80217.172.38$84,775
Dec 20014,4485,31216.932.36$87,864
Nov 20014,0022,64318.072.41$78,674
Oct 20015,4773,78919.782.53$117,917
Sep 20017,1553,50624.262.25$181,473
Aug 20013,0392,53424.873.05$83,317
Jul 20013,3543,43423.933.20$91,240
Jun 20013,3672,55224.563.82$92,453
May 20013,5282,74625.524.31$101,862
Apr 20012,62566424.685.34$68,328
Mar 20012,98361524.545.38$76,509
Feb 20012,824027.755.77$78,366
Jan 20013,1304427.478.40$86,351
Dec 20002,380026.889.12$63,974
Nov 20003,054032.215.66$98,369
Oct 20003,568031.235.15$111,429
Sep 20003,189131.875.19$101,639
Aug 20002,9875629.644.54$88,789
Jul 20002,95759028.534.09$86,776
Jun 20002,60596029.304.40$80,548
May 20002,8621,15827.263.68$82,279
Apr 20002,8891,24324.513.12$74,683
Mar 20003,30458828.422.86$95,581
Feb 20002,96348227.622.73$83,152
Jan 20003,2751,02025.272.48$85,289
Dec 19993,5561,36024.282.42$89,636
Nov 19992,6711,57623.192.43$65,776
Oct 19993,0141,44020.982.80$67,271
Sep 19993,2641,25521.752.62$74,279
Aug 19993,5171,70019.262.88$72,626
Jul 19993,0621,40817.892.37$58,119
Jun 19993,4301,66915.942.36$58,617
May 19993,33390915.792.32$54,738
Apr 19992,20497515.102.21$35,433
Mar 19992,2862,21812.471.84$32,584
Feb 19992,1819579.981.82$23,506
Jan 19991,99264710.381.90$21,906
Dec 19982,3929579.201.77$23,703
Nov 19982,34922810.892.19$26,079
Oct 19982,85512512.421.97$35,705
Sep 19982,84212412.592.08$36,039
Aug 19982,91712411.301.91$33,199
Jul 19983,16912311.742.24$37,479
Jun 19983,27813011.242.24$37,136
May 19983,36213112.622.21$42,717
Apr 19983,74613113.042.51$49,176
Mar 19984,33213212.802.31$55,754
Feb 19983,12513313.952.30$43,900
Jan 19983,09112914.702.15$45,716
Dec 19972,46712916.322.41$40,572
Nov 19972,73712518.193.09$50,172
Oct 19973,08012019.253.15$59,668
Sep 19973,08911917.742.95$55,150
Aug 19973,18212017.862.55$57,137
Jul 19973,64413217.582.25$64,358
Jun 19973,28712017.242.26$56,939
May 19973,6017218.972.31$68,477
Apr 19973,72613817.882.08$66,908
Mar 19974,6866918.951.94$88,934
Feb 19974,7997320.492.21$98,493
Jan 19972,41218123.483.54$57,274
Dec 19961,73028723.32$40,344
Nov 19961,8097221.97$39,744
Oct 19961,80726623.31$42,121
Sep 19962,10329722.22$46,729
Aug 19962,10331920.26$42,607
Jul 19962,10729819.55$41,192
Jun 19962,20533818.73$41,300
May 19962,29157119.43$44,514
Apr 19962,12710821.51$45,752
Mar 19962,27117519.38$44,012
Feb 19962,1061616.98$35,760
Jan 19962,1491517.07$36,683
Dec 19951,88717417.19$32,438
Nov 19952,35222216.00$37,632
Oct 19952,43121215.43$37,510
Sep 19952,46020816.18$39,803
Aug 19952,64822615.92$42,156
Jul 19952,39913015.24$36,561
Jun 19952,5785816.41$42,305
May 19952,64580317.56$46,446
Apr 19952,08215617.73$36,914
Mar 19952,34371816.44$38,519
Feb 19952,22222916.58$36,841
Jan 19951,98626915.92$31,617
Dec 19942,53619815.03$38,116
Nov 19942,82233515.90$44,870
Oct 19942,34741915.58$36,566
Sep 19942,43531315.29$37,231
Aug 19942,66626916.13$43,003
Jul 19942,63334417.56$46,235
Jun 19942,56029117.09$43,750
May 19942,65641115.88$42,177
Apr 19941,95049314.14$27,573
Mar 19942,91972612.46$36,371
Feb 19942,48155012.50$31,013
Jan 19942,80327212.66$35,486
Dec 19932,54019612.33$31,318
Nov 19932,17714814.49$31,545
Oct 19932,49717615.85$39,577
Sep 19932,33918815.03$35,155
Aug 19932,67748415.66$41,922
Jul 19932,72234915.46$42,082
Jun 19932,74719816.79$46,122
May 19933,00234517.68$53,075
Apr 19932,95445318.05$53,320
Mar 19933,33054318.14$60,406
Feb 19933,13847717.90$56,170
Jan 19933,53310816.93$59,814

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                2,864 bbl  × $ 95.72 =   $274,142
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                 $274,142

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/18996 is the state's own key, not one this site invented.