TXL "35"

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 17781District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$26.2 M
Dec 2011 – May 2026
Value, last 12 filed months
$738 k
at the published price for each month
Months reported
174
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 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
OilDisposition305,981 bbl$22,000,130
Casinghead gasProduction1,238,883 Mcf$4,163,916
Total$26,164,046

Wells on this lease (4)

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 31.5243, -102.1392. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

31.52407, -102.13924 · 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
25.0%
1 of 4 wells
With a plug date
25.0%
1 of 4 wells
Median depth
11,235 ft
4 wells filed one
Completion to plug
10.3 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
125.0%
A plug date is filed
125.0%
BothOn the schedule and plugged. Neither fact cancels the other.
125.0%
NeitherNo plug date, and not on the schedule.
375.0%

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

Between 10,786 and 11,345 ft, median 11,235 ft, over the 4 wells that filed a depth.

Completions filed
Jan 2012 – Nov 2012
4 of 4 wells
Plug dates filed
May 2022
1 of 4 wells; 3 filed none

Last completion to plug: a median of 10.3 years across the 1 well that filed both dates, with the middle half between 10.3 years and 10.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-461381891011,220 ftNov 2012
42-461380101111,250 ftAug 2012
42-461377311411,345 ftFeb 2012
42-461376201510,786 ftJan 2012May 2022Yes

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 (174)

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

174 months

May 20262343,551106.413.05$35,716
Apr 20265944,06398.932.87$70,424
Mar 20265633,64289.753.15$62,000
Feb 20263633,44863.503.75$35,982
Jan 20266624,02259.138.00$71,312
Dec 20258734,77556.664.41$70,538
Nov 20259174,75458.593.93$72,393
Oct 20251,0024,83659.383.30$75,481
Sep 20254844,65362.743.08$44,683
Aug 20259624,95463.933.01$76,436
Jul 20256554,76066.743.32$59,495
Jun 20257374,69366.483.13$63,679
May 20259194,96260.553.23$71,684
Apr 20258374,62262.363.54$68,572
Mar 20258794,76867.704.27$79,860
Feb 20259224,32270.884.34$84,112
Jan 20259414,79574.324.28$90,451
Dec 20248114,75168.993.12$70,781
Nov 20248924,58869.052.20$71,679
Oct 20249204,48271.372.28$75,886
Sep 20246344,64969.612.36$55,125
Aug 20249935,15075.632.06$85,728
Jul 20248334,97979.932.15$77,270
Jun 20248104,95278.082.63$76,288
May 2024907078.812.20$71,481
Apr 20246864,29384.451.66$65,056
Mar 20248844,12480.301.55$77,357
Feb 20248034,22776.091.78$68,640
Jan 20248964,63373.023.30$80,704
Dec 20231,1754,98171.262.61$96,735
Nov 20238654,76177.892.81$80,742
Oct 20238694,46785.443.09$88,038
Sep 20236164,36589.042.74$66,787
Aug 20231,0275,54780.522.67$97,521
Jul 20239885,07474.852.64$87,356
Jun 20231,1205,30668.962.26$89,219
May 20239975,38970.622.23$82,412
Apr 20231,0125,05178.122.24$90,360
Mar 20231,2165,48972.852.39$101,722
Feb 20235803,78475.112.47$52,894
Jan 20237484,94776.533.39$74,003
Dec 20221,0004,45176.415.73$101,910
Nov 20221,2705,60285.005.65$139,580
Oct 20221,1285,63687.185.86$131,387
Sep 20227534,37684.888.16$99,639
Aug 20223974,70594.529.13$80,468
Jul 20224793,882101.587.54$77,935
Jun 20221,1795,561115.097.98$180,052
May 20229975,883109.378.43$158,653
Apr 20221,4065,804104.226.84$186,219
Mar 20227965,791108.885.08$116,066
Feb 20228225,21591.054.86$100,182
Jan 20221,6755,73181.844.54$163,087
Dec 20219055,87571.323.90$87,452
Nov 20211,3145,64077.435.24$131,279
Oct 20219155,93379.795.71$106,908
Sep 20211,1305,70369.865.35$109,458
Aug 20211,1452,95866.024.22$88,077
Jul 20211,0415,94470.783.98$97,351
Jun 20211,4575,86169.493.38$121,061
May 20217065,05763.483.02$60,077
Apr 20217735,23760.362.76$61,104
Mar 20211,1005,40661.302.72$82,118
Feb 20213702,47857.805.55$35,134
Jan 20211,1485,69350.412.81$73,870
Dec 20201,6275,70044.642.68$87,879
Nov 20201,0675,61338.772.71$56,560
Oct 20201,5935,84636.972.48$73,382
Sep 20207845,27437.091.99$39,579
Aug 20201,2644,99539.982.39$62,448
Jul 20201,1945,00238.371.83$54,943
Jun 20201,6455,48034.901.69$66,673
May 20207464,78416.921.81$21,304
Apr 20201,1535,05814.751.80$26,133
Mar 20201,2456,02330.341.86$48,953
Feb 20201,5605,63049.881.98$88,964
Jan 20201,2416,03057.252.09$83,679
Dec 20191,5775,93459.012.30$106,733
Nov 20191,5055,57155.302.75$98,551
Oct 20198015,52453.472.42$56,189
Sep 20191,6805,56155.052.66$107,261
Aug 20191,1855,13353.112.30$74,764
Jul 20197395,20556.272.46$54,388
Jun 20197574,57352.782.49$51,347
May 20191,6675,78058.482.74$113,325
Apr 20191,2705,77062.632.75$95,412
Mar 20198455,12056.803.06$63,674
Feb 20198304,32350.852.79$54,276
Jan 20191,2424,95546.033.23$73,165
Dec 20181,6793,82246.594.19$94,221
Nov 20181,2274,33152.934.24$83,297
Oct 20181,5924,96961.443.40$114,698
Sep 20181,1745,64659.543.11$87,448
Aug 20181,1944,61159.403.07$85,064
Jul 20189864,94865.142.93$78,735
Jun 20181,1204,86960.183.08$82,383
May 20181,1355,38965.382.90$89,839
Apr 20181,4125,67963.842.90$106,616
Mar 20181,4426,14761.222.79$105,410
Feb 20181,4355,39361.782.77$103,572
Jan 20181,0705,37162.874.01$88,805
Dec 20171,2184,45257.272.92$82,761
Nov 20171,0996,61055.423.12$81,519
Oct 20171,5017,74749.292.98$97,099
Sep 20171,5207,79747.523.09$96,302
Aug 20172,0228,08745.373.00$116,035
Jul 20171,5668,95643.873.09$96,350
Jun 20172,2499,14842.493.09$123,802
May 20172,4197,78745.373.26$135,162
Apr 20171,1637,34447.933.21$79,329
Mar 20171,6787,98846.772.98$102,314
Feb 20171,9247,22550.452.95$118,398
Jan 20171,9377,99149.413.42$123,027
Dec 20161,5528,25548.763.72$106,407
Nov 20161,9888,11142.492.64$105,918
Oct 20161,4898,41346.193.09$94,775
Sep 20162,2818,41141.553.10$120,855
Aug 20161,5969,07641.442.92$92,680
Jul 20161,7469,55541.622.92$100,611
Jun 20161,4589,69745.352.69$92,165
May 20162,36310,20542.521.99$120,793
Apr 20162,28010,23836.561.99$103,741
Mar 20161,6018,78533.011.79$68,609
Feb 20161,8438,80326.472.06$66,950
Jan 20161,9428,64227.352.36$73,547
Dec 20152,11110,44332.362.00$89,213
Nov 20151,9978,67538.792.17$96,265
Oct 20152,32111,55943.552.43$129,128
Sep 20151,91812,27942.992.76$116,325
Aug 20152,83212,88240.162.87$150,737
Jul 20152,31212,07748.152.95$146,891
Jun 20152,42410,38856.152.88$166,055
May 20152,30011,54555.212.96$161,104
Apr 20152,44012,01149.822.71$154,069
Mar 20152,42812,59042.892.93$141,085
Feb 20152,78211,47744.662.98$158,402
Jan 20153,03611,48943.433.10$167,477
Dec 20142,97311,60554.693.59$204,271
Nov 20142,96911,07070.464.25$256,264
Oct 20142,77513,30378.303.90$269,177
Sep 20142,84213,15686.164.05$298,089
Aug 20143,66915,32289.394.04$389,798
Jul 20143,34412,77496.564.18$376,287
Jun 20141,9887,97298.164.74$232,904
May 20142,0879,62994.734.73$243,214
Apr 20143,01411,87695.944.81$346,276
Mar 20143,13011,29795.895.06$357,262
Feb 20143,15110,30197.406.19$370,691
Jan 20142,96711,40890.404.86$323,668
Dec 20133,75711,28691.824.35$394,112
Nov 20132,99610,59788.853.74$305,809
Oct 20133,74311,42797.423.78$407,830
Sep 20132,76612,462104.113.72$334,299
Aug 20134,29110,716104.253.52$485,085
Jul 20133,42610,018102.523.72$388,478
Jun 20133,42010,32294.403.93$363,449
May 20133,6959,97994.834.15$391,801
Apr 20133,4969,70693.964.28$370,051
Mar 20134,00910,22493.623.91$415,328
Feb 20134,28310,76491.233.42$427,550
Jan 20134,27310,03891.603.42$425,736
Dec 20125,70415,68286.773.42$548,571
Nov 20127,10117,38686.953.62$680,456
Oct 20123,57812,15289.383.40$361,115
Sep 20125,31716,95894.672.92$552,851
Aug 20124,78315,25492.662.91$487,554
Jul 20122,7846,11685.133.02$255,477
Jun 20123,1918,67179.822.52$276,548
May 20124,90913,99491.612.49$484,535
Apr 20127,96118,526101.652.00$846,228
Mar 20124,6447,211105.052.22$503,876
Feb 20122,4802,445101.102.57$257,012
Jan 201271439098.092.73$71,103
Dec 201101896.873.24$58

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                  234 bbl  × $106.41 =    $24,900
Casinghead gas     3,551 Mcf  × $  3.05 =    $10,816

────────────────────────────────────────────────────
Month total                                  $35,716

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/17781 is the state's own key, not one this site invented.