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AMACKER 66B

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 20817District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$30.7 M
Jun 2019 – May 2026
Value, last 12 filed months
$2.3 M
at the published price for each month
Months reported
84
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
OilDisposition391,160 bbl$21,345,298
Casinghead gasProduction2,712,622 Mcf$9,353,297
Total$30,698,595

Wells on this lease (1)

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 31.4026, -102.0467. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.40255, -102.04666 · 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
0.0%
0 of 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
9,044 ft
1 wells filed one
Completion to plug
—
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
1100.0%

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

The one well that filed a depth was drilled to 9,044 ft.

Completions filed
Jan 2020
1 of 1 wells

1 well

42-461410806607BH9,044 ftJan 2020——

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 (84)

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

84 months

May 20261,23426,126106.413.05$210,886
Apr 20261,20525,21798.932.87$191,576
Mar 20261,23226,19689.753.15$193,075
Feb 20261,22224,75663.503.75$170,440
Jan 20261,26227,50659.138.00$294,613
Dec 20251,36829,06756.664.41$205,794
Nov 20251,35327,95858.593.93$189,048
Oct 20251,35527,53659.383.30$171,462
Sep 20251,34727,70362.743.08$169,751
Aug 20251,41429,33863.933.01$178,844
Jul 20251,45827,36866.743.32$188,037
Jun 20251,39727,08266.483.13$177,605
May 20251,53228,47860.553.23$184,813
Apr 20251,49727,27762.363.54$189,999
Mar 20251,53128,69567.704.27$226,128
Feb 20251,62927,38170.884.34$234,320
Jan 20251,88827,49374.324.28$257,950
Dec 20241,58729,11268.993.12$200,356
Nov 20241,47429,87869.052.20$167,465
Oct 20241,41332,85971.372.28$175,810
Sep 20241,50427,21369.612.36$169,035
Aug 20241,79329,85875.632.06$197,220
Jul 20241,75330,83679.932.15$206,310
Jun 20241,59233,17978.082.63$211,696
May 20241,809078.812.20$142,567
Apr 20242,12031,14384.451.66$230,706
Mar 20242,27032,50180.301.55$232,499
Feb 20241,94631,73276.091.78$204,670
Jan 20241,87432,04773.023.30$242,520
Dec 20232,13233,12171.262.61$238,396
Nov 20232,00034,41677.892.81$252,405
Oct 20232,09534,86485.443.09$286,632
Sep 20232,05733,94289.042.74$275,988
Aug 20232,27635,04480.522.67$276,932
Jul 20232,19835,41074.852.64$258,066
Jun 20232,26136,18668.962.26$237,644
May 20232,43837,76170.622.23$256,280
Apr 20232,43038,27378.122.24$275,477
Mar 20232,67437,42472.852.39$284,363
Feb 20232,52931,88775.112.47$268,576
Jan 20232,75733,91376.533.39$325,881
Dec 20222,74832,19776.415.73$394,434
Nov 20222,71832,87485.005.65$416,643
Oct 20222,94928,28487.185.86$422,944
Sep 20222,85930,08084.888.16$488,235
Aug 20223,20538,48794.529.13$654,214
Jul 20223,16035,836101.587.54$591,271
Jun 20223,15733,978115.097.98$634,388
May 20224,56837,084109.378.43$812,333
Apr 20223,75535,224104.226.84$632,194
Mar 20223,97434,258108.885.08$606,596
Feb 20223,77129,91391.054.86$488,692
Jan 20223,85629,08181.844.54$447,535
Dec 20214,35328,77571.323.90$422,653
Nov 20214,05327,61677.435.24$458,445
Oct 20214,13333,13179.795.71$519,078
Sep 20214,22334,33769.865.35$478,753
Aug 20214,37331,79566.024.22$422,899
Jul 20215,03240,60970.783.98$517,873
Jun 20215,63541,32369.493.38$531,274
May 20215,86337,63163.483.02$485,741
Apr 20216,38040,85360.362.76$497,787
Mar 20217,70545,14661.302.72$594,975
Feb 20215,28822,19157.805.55$428,761
Jan 20217,83743,26550.412.81$516,650
Dec 20208,01545,44244.642.68$479,368
Nov 20208,30646,27938.772.71$447,281
Oct 20209,16651,68036.972.48$466,952
Sep 20209,87550,80637.091.99$467,421
Aug 202011,13455,14639.982.39$576,666
Jul 202012,74767,56438.371.83$612,415
Jun 202015,13869,15334.901.69$645,206
May 202017,80572,20016.921.81$432,286
Apr 202024,87881,05514.751.80$513,205
Mar 202032,20355,83630.341.86$1,080,683
Feb 202040,86741,67049.881.98$2,120,980
Jan 202022,52524,04757.252.09$1,339,928
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0

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                1,234 bbl  × $106.41 =   $131,310
Casinghead gas    26,126 Mcf  × $  3.05 =    $79,576

────────────────────────────────────────────────────
Month total                                 $210,886

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/20817 is the state's own key, not one this site invented.