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AMACKER66

Operated by COG OPERATING LLC (P-5 166150) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 15604District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$35.6 M
Sep 2004 – May 2026
Value, last 12 filed months
$168 k
at the published price for each month
Months reported
261
no gaps in the span
Streams
2
oil, casinghead gas

The SPRABERRY (TREND AREA) 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 7,461 leases and 22,481 wells, and the rule below applies to all of them.

Discovered
1904-12-31
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 2016-03-08.

The Commission's schedule remark for this field reads: “AREA) 85279200.”

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
OilDisposition433,308 bbl$28,872,156
Casinghead gasProduction1,456,094 Mcf$6,771,644
Total$35,643,799

Wells on this lease (7)

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 31.3685, -102.0340. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

31.36783, -102.03224 · 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
28.6%
2 of 7 wells
With a plug date
28.6%
2 of 7 wells
Median depth
10,242 ft
7 wells filed one
Completion to plug
15.0 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
228.6%
A plug date is filed
228.6%
BothOn the schedule and plugged. Neither fact cancels the other.
228.6%
NeitherNo plug date, and not on the schedule.
571.4%

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

Between 10,200 and 10,325 ft, median 10,242 ft, over the 7 wells that filed a depth.

Completions filed
Sep 2004 – May 2015
7 of 7 wells
Plug dates filed
Aug 2022
2 of 7 wells; 5 filed none

Last completion to plug: a median of 15.0 years across the 2 wells that filed both dates, with the middle half between 14.4 years and 15.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

7 wells

42-461400671910,200 ftMay 2015——
42-46138003710,250 ftMay 2012——
42-46136092510,225 ftMar 2009——
42-46135919410,242 ftSep 2008Aug 2022Yes
42-46134671210,300 ftAug 2006Aug 2022Yes
42-46134774310,325 ftApr 2006——
42-46134601110,238 ftSep 2004——

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 (261)

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

261 months

May 2026191676106.413.05$22,383
Apr 202617262098.932.87$18,795
Mar 202618163389.753.15$18,238
Feb 202616659663.503.75$12,776
Jan 202618665359.138.00$16,221
Dec 2025056356.664.41$2,485
Nov 202517159158.593.93$12,339
Oct 202517168659.383.30$12,421
Sep 202516370462.743.08$12,393
Aug 202516576963.933.01$12,867
Jul 202517578866.743.32$14,292
Jun 202516669166.483.13$13,198
May 202533169860.553.23$22,298
Apr 202515168262.363.54$11,833
Mar 202531961067.704.27$24,200
Feb 2025058070.884.34$2,518
Jan 202539261374.324.28$31,756
Dec 2024055168.993.12$1,720
Nov 202426957569.052.20$19,839
Oct 202425844471.372.28$19,426
Sep 202404569.612.36$106
Aug 202443048075.632.06$33,511
Jul 2024017879.932.15$382
Jun 202423855778.082.63$20,050
May 2024209078.812.20$16,471
Apr 202420452884.451.66$18,104
Mar 202420638780.301.55$17,140
Feb 202421849476.091.78$17,469
Jan 202416851273.023.30$13,956
Dec 202318146371.262.61$14,107
Nov 202320135877.892.81$16,661
Oct 202322530185.443.09$20,153
Sep 202320632389.042.74$19,226
Aug 202325129680.522.67$21,002
Jul 202326445774.852.64$20,968
Jun 202323146268.962.26$16,973
May 202324452170.622.23$18,392
Apr 202326050078.122.24$21,430
Mar 202349248572.852.39$37,003
Feb 202323948375.112.47$19,142
Jan 202347062276.533.39$38,076
Dec 202275831176.415.73$59,701
Nov 202202685.005.65$147
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20221888394.529.13$18,527
Jul 2022325391101.587.54$35,962
Jun 2022348356115.097.98$42,891
May 2022327180109.378.43$37,282
Apr 202200104.226.84$0
Mar 2022569242108.885.08$63,181
Feb 202231331691.054.86$30,034
Jan 202257139981.844.54$48,541
Dec 2021023971.323.90$932
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 2021017566.024.22$739
Jul 202125466770.783.98$20,634
Jun 202129970769.493.38$23,168
May 202154892863.483.02$37,587
Apr 202127479260.362.76$18,723
Mar 202164078861.302.72$41,373
Feb 202120149057.805.55$14,336
Jan 202143166550.412.81$23,596
Dec 202051236944.642.68$23,843
Nov 202051471638.772.71$21,866
Oct 202048076536.972.48$19,642
Sep 202075871937.091.99$29,546
Aug 202056683739.982.39$24,625
Jul 202055692438.371.83$23,020
Jun 202067783534.901.69$25,039
May 202084465516.921.81$15,469
Apr 202063935314.751.80$10,062
Mar 202096591230.341.86$30,971
Feb 202055863749.881.98$29,095
Jan 202032649157.252.09$19,692
Dec 2019214859.012.30$1,350
Nov 201925678655.302.75$16,319
Oct 201901,59353.472.42$3,853
Sep 20192181,89955.052.66$17,047
Aug 20193671,65053.112.30$23,294
Jul 201911,66356.272.46$4,147
Jun 201939689952.782.49$23,140
May 201901,14358.482.74$3,132
Apr 201921,08262.632.75$3,102
Mar 20191,2054,97656.803.06$83,681
Feb 20198105,80350.852.79$57,392
Jan 20198316,40446.033.23$58,924
Dec 20188106,58646.594.19$65,303
Nov 20189395,84752.934.24$74,476
Oct 20188356,52861.443.40$73,485
Sep 20181,2706,63759.543.11$96,244
Aug 20188136,94359.403.07$69,583
Jul 20188967,06265.142.93$79,070
Jun 20188237,54060.183.08$72,728
May 20188177,66465.382.90$75,647
Apr 20181,1305,55863.842.90$88,262
Mar 20181,1495,77761.222.79$86,441
Feb 20188465,29061.782.77$66,899
Jan 20181,0426,26562.874.01$90,629
Dec 20178575,13957.272.92$64,094
Nov 20171,1555,38155.423.12$80,790
Oct 20177236,33949.292.98$54,550
Sep 20171,0876,35347.523.09$71,268
Aug 20171,0436,83945.373.00$67,868
Jul 20177466,96543.873.09$54,230
Jun 20171,1967,34442.493.09$73,491
May 20171,2317,61845.373.26$80,711
Apr 20171,1176,80547.933.21$75,393
Mar 20171,0025,87546.772.98$64,393
Feb 20177155,82950.452.95$53,282
Jan 20171,1545,52649.413.42$75,911
Dec 20161,2978,59748.763.72$95,247
Nov 20161,3708,34342.492.64$80,273
Oct 20161,2728,40046.193.09$84,712
Sep 20161,0758,52141.553.10$71,087
Aug 20161,2228,35741.442.92$75,078
Jul 20161,2844,36041.622.92$66,190
Jun 20161,2566,47845.352.69$74,358
May 20168665,45942.521.99$47,691
Apr 20161,01311,25636.561.99$59,446
Mar 20161,54815,91833.011.79$79,657
Feb 20161,67516,28026.472.06$77,933
Jan 20162,38417,24527.352.36$105,976
Dec 20152,40316,91832.362.00$111,621
Nov 20152,73117,44638.792.17$143,747
Oct 20153,32916,80143.552.43$185,747
Sep 20154,23618,39542.992.76$232,847
Aug 20155,22714,28140.162.87$250,938
Jul 20155,50712,17948.152.95$301,030
Jun 20158,49412,59456.152.88$513,245
May 20153,0166,97655.212.96$187,131
Apr 20151,0915,77049.822.71$69,971
Mar 20151,6185,81042.892.93$86,447
Feb 20151,3615,20344.662.98$76,267
Jan 20151,6105,76243.433.10$87,788
Dec 20141,8435,93554.693.59$122,108
Nov 20141,5535,87670.464.25$134,408
Oct 20141,6656,32678.303.90$155,047
Sep 20141,6786,24386.164.05$169,832
Aug 20141,7456,68889.394.04$182,972
Jul 20141,8616,93296.564.18$208,671
Jun 20141,7566,35598.164.74$202,472
May 20141,7155,88094.734.73$190,254
Apr 20141,6896,30995.944.81$192,383
Mar 20141,9566,45795.895.06$220,213
Feb 20141,7615,82297.406.19$207,571
Jan 20142,0366,43590.404.86$215,333
Dec 20132,0696,46191.824.35$218,110
Nov 20131,8826,32488.853.74$190,857
Oct 20131,8126,68497.423.78$201,786
Sep 20131,9197,280104.113.72$226,852
Aug 20132,0717,760104.253.52$243,237
Jul 20132,0217,656102.523.72$235,656
Jun 20132,1557,38994.403.93$232,496
May 20132,2427,76894.834.15$244,839
Apr 20132,3357,73593.964.28$252,522
Mar 20132,9548,18493.623.91$308,576
Feb 20132,1027,67191.233.42$218,000
Jan 20132,6979,10591.603.42$278,183
Dec 20122,89711,13986.773.42$289,470
Nov 20122,90712,33586.953.62$297,478
Oct 20123,20912,33589.383.40$328,755
Sep 20123,2679,17294.672.92$336,054
Aug 20123,40913,18592.662.91$354,222
Jul 20126,10017,52085.133.02$572,217
Jun 20123,6369,15879.822.52$313,295
May 20121,9556,68091.612.49$195,720
Apr 20121,8556,303101.652.00$201,147
Mar 20121,8266,473105.052.22$206,205
Feb 20121,9435,995101.102.57$211,846
Jan 20122,0896,35398.092.73$222,280
Dec 20112,1316,33496.873.24$226,950
Nov 20112,1316,31495.723.31$224,887
Oct 20112,0986,37284.983.65$201,537
Sep 20111,6906,00883.623.99$165,264
Aug 20112,0376,24983.404.15$195,815
Jul 20112,1926,49694.144.52$235,699
Jun 20111,9766,37992.904.64$213,168
May 20112,2036,32798.134.40$244,050
Apr 20112,3797,046105.964.33$282,611
Mar 20112,5247,60796.364.06$274,077
Feb 20112,3506,90485.644.18$230,113
Jan 20112,5018,13086.504.59$253,643
Dec 20102,8429,22385.734.35$283,744
Nov 20103,0559,23780.843.80$282,024
Oct 20103,39010,80678.103.51$302,676
Sep 20102,4029,01872.633.98$210,344
Aug 20102,44111,05773.684.42$228,718
Jul 20102,69110,33872.554.74$244,198
Jun 20102,40810,43770.364.91$220,677
May 20102,53311,49671.124.24$228,835
Apr 20102,88612,08681.694.12$285,584
Mar 20103,24011,50878.394.39$304,488
Feb 20102,9459,33473.585.44$267,492
Jan 20103,83510,34874.365.96$346,887
Dec 20092,5506,30871.445.48$216,763
Nov 20093,4877,26374.593.75$287,342
Oct 20092,9118,11572.544.11$244,519
Sep 20092,9188,69965.543.06$217,906
Aug 20094,14212,35767.423.22$319,025
Jul 20094,43711,26961.133.46$310,275
Jun 20093,7388,08666.163.90$278,801
May 20094,7178,89454.743.93$293,124
Apr 20095,9218,65346.773.59$307,968
Mar 20095,9669,26742.144.06$289,022
Feb 20094,4126,96432.814.63$177,022
Jan 20093,9237,95235.865.37$183,389
Dec 20085,07411,33337.105.98$255,984
Nov 20086,56010,45055.496.86$435,705
Oct 20084,2466,86375.246.92$366,975
Sep 20083,5125,297101.767.88$399,106
Aug 20081,2594,859114.228.48$185,022
Jul 20081,0523,818131.0811.39$181,381
Jun 20083453,454131.3313.03$90,324
May 20086993,977123.1711.57$132,127
Apr 20081,0414,876110.3110.45$165,811
Mar 20081,4705,124101.909.66$199,312
Feb 20081,3424,98592.538.77$167,897
Jan 20081,7255,42490.388.21$200,413
Dec 20071,2395,50888.337.30$149,660
Nov 20071,2155,92791.677.29$154,597
Oct 20072,0646,39882.856.92$215,289
Sep 20071,1876,42275.846.24$130,122
Aug 20071,5315,28969.066.39$139,517
Jul 20071,3866,31470.906.39$138,601
Jun 20071,7676,81062.007.55$160,959
May 20071,6157,99258.747.85$157,573
Apr 20072,0838,57059.617.81$191,058
Mar 20071,7659,71056.927.30$171,366
Feb 20072,2948,72455.108.22$198,076
Jan 20072,5939,34150.306.73$193,263
Dec 20062,78810,16756.656.92$228,280
Nov 20062,6208,51854.207.62$206,890
Oct 20062,6908,26054.906.01$197,355
Sep 20068875,07160.085.04$78,835
Aug 20061,4245,40468.717.34$137,508
Jul 20061,7396,49769.376.34$161,843
Jun 20062,2817,93266.286.38$201,822
May 20062,4558,26166.016.42$215,131
Apr 20062,2799,68764.397.36$218,046
Mar 20062,19911,11756.707.08$203,424
Feb 20062,3426,94257.597.75$188,684
Jan 20061,8095,87260.598.93$162,064
Dec 20052,6839,10154.9413.42$269,498
Nov 20053,39214,59254.6910.59$340,014
Oct 20054,53511,96558.3413.80$429,638
Sep 20055,42410,29261.4512.08$457,622
Aug 20052,9424,65761.519.80$226,586
Jul 20052,97410,51355.697.84$248,082
Jun 20054,35717,85052.337.38$359,753
May 200510,23221,63145.226.65$606,562
Apr 20058,34512,55549.207.36$502,985
Mar 20054,6476,44850.377.15$280,204
Feb 20051,5314,77445.226.31$99,365
Jan 20052,0763,20643.166.32$109,869
Dec 20041,4354,53239.866.75$87,795
Nov 20043,2523,71545.286.33$170,768
Oct 20041,8942,11849.706.52$107,931
Sep 20047043.245.28$303

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                  191 bbl  × $106.41 =    $20,324
Casinghead gas       676 Mcf  × $  3.05 =     $2,059

────────────────────────────────────────────────────
Month total                                  $22,383

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. 7C/O/15604 is the state's own key, not one this site invented.