ALLISON

Operated by SUMMIT PETROLEUM LLC (P-5 829221) 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 18587District 7CField 85279200OilCasinghead gasSave
Value, all time
$57.5 M
Nov 2013 – May 2026
Value, last 12 filed months
$1.2 M
at the published price for each month
Months reported
151
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition642,960 bbl$46,250,050
Casinghead gasProduction3,280,128 Mcf$11,291,045
Total$57,541,094

Wells on this lease (13)

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 31.3687, -102.1539. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.0 miles.

31.36925, -102.15341 · 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
15.4%
2 of 13 wells
With a plug date
15.4%
2 of 13 wells
Median depth
10,598 ft
13 wells filed one
Completion to plug
4.8 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
215.4%
A plug date is filed
215.4%
BothOn the schedule and plugged. Neither fact cancels the other.
215.4%
NeitherNo plug date, and not on the schedule.
1184.6%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 13 of 13 wells. Median 10,598 ft, with the middle half between 10,550 and 10,632 ft; the shallowest is 10,335 ft and the deepest 10,660 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

10s
20s

Last completion by decade, 13 of 13 wells, Nov 2013 – Feb 2026. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Nov 2013 – Feb 2026
13 of 13 wells
Plug dates filed
May 2022
2 of 13 wells; 11 filed none

Last completion to plug: a median of 4.8 years across the 2 wells that filed both dates, with the middle half between 2.9 years and 6.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

13 wells

42-46138871250410,550 ftFeb 2026
42-46138857250910,632 ftApr 2021May 2022Yes
42-46139069251510,598 ftApr 2014
42-46139068250310,610 ftApr 2014
42-46139067251410,660 ftMar 2014
42-46139063250710,575 ftFeb 2014
42-46139061251010,610 ftFeb 2014
42-46139062250610,635 ftFeb 2014
42-46139058251610,335 ftFeb 2014
42-46138870251310,580 ftDec 2013
42-46138868251210,500 ftDec 2013
42-46138869250110,634 ftDec 2013
42-46138852250810,465 ftNov 2013May 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 (151)

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

151 months

May 20267538,933106.413.05$107,335
Apr 20267298,76498.932.87$97,270
Mar 20267089,75689.753.15$94,269
Feb 20268709,13063.503.75$89,485
Jan 20261,0068,79359.138.00$129,810
Dec 202578010,25956.664.41$89,471
Nov 20257479,30758.593.93$80,310
Oct 202598110,44259.383.30$92,761
Sep 20259199,96362.743.08$88,313
Aug 202599410,83063.933.01$96,196
Jul 20251,34111,05466.743.32$126,145
Jun 20256899,14566.483.13$74,417
May 20251,16910,33160.553.23$104,176
Apr 20256468,51062.363.54$70,437
Mar 20251,15511,44867.704.27$127,057
Feb 20256728,94070.884.34$86,438
Jan 20257538,48074.324.28$92,246
Dec 20241,11210,08068.993.12$108,180
Nov 20241,0409,75669.052.20$93,260
Oct 20241,01611,20771.372.28$98,080
Sep 20241,05310,82669.612.36$98,896
Aug 20241,14011,43875.632.06$109,822
Jul 20241,30112,36979.932.15$130,540
Jun 20241,08612,02678.082.63$116,471
May 20241,38912,09678.812.20$136,059
Apr 20241,61713,41484.451.66$158,812
Mar 20241,05111,90180.301.55$102,784
Feb 202496012,63076.091.78$95,574
Jan 20241,40211,80773.023.30$141,310
Dec 20231,73813,04071.262.61$157,894
Nov 20231,70312,83677.892.81$168,685
Oct 20231,79114,74785.443.09$198,551
Sep 20231,22111,43789.042.74$139,998
Aug 20231,02613,53880.522.67$118,799
Jul 20231,05013,11474.852.64$113,237
Jun 20231,02213,80268.962.26$101,649
May 20231,38712,56470.622.23$125,935
Apr 20231,23613,92378.122.24$127,713
Mar 20231,60413,70272.852.39$149,642
Feb 20231,53512,90775.112.47$147,118
Jan 20231,28113,35176.533.39$143,264
Dec 20221,49613,70276.415.73$192,809
Nov 20221,18012,85685.005.65$172,888
Oct 20221,36313,51587.185.86$198,075
Sep 202293514,25484.888.16$195,728
Aug 20221,14715,19494.529.13$247,093
Jul 20221,83815,368101.587.54$302,611
Jun 20221,80015,567115.097.98$331,343
May 20221,25414,606109.378.43$260,323
Apr 20221,48915,849104.226.84$263,553
Mar 20222,26916,476108.885.08$330,687
Feb 20221,67813,07591.054.86$216,311
Jan 20221,57215,41681.844.54$198,605
Dec 20212,29116,21271.323.90$226,607
Nov 20211,45214,93577.435.24$190,641
Oct 20211,32416,46679.795.71$199,727
Sep 20211,87315,03569.865.35$211,299
Aug 20211,51716,55966.024.22$170,041
Jul 20212,22019,16170.783.98$233,432
Jun 20211,5458,14169.493.38$134,884
May 20212,08916,53363.483.02$182,501
Apr 20212,15216,44560.362.76$175,257
Mar 20211,75816,36561.302.72$152,228
Feb 20211,50013,31757.805.55$160,582
Jan 20212,17816,49250.412.81$156,140
Dec 20202,37916,77844.642.68$151,087
Nov 20202,31617,85338.772.71$138,112
Oct 20201,19014,19436.972.48$79,173
Sep 20201,46114,95937.091.99$83,972
Aug 20202,06014,52339.982.39$116,998
Jul 20202,04811,60238.371.83$99,757
Jun 20203,05111,24034.901.69$125,479
May 2020010,84316.921.81$19,677
Apr 20202,26717,36414.751.80$64,770
Mar 20202,51917,37730.341.86$108,682
Feb 20202,03117,54449.881.98$136,055
Jan 20202,52012,03857.252.09$169,486
Dec 20193,04419,10159.012.30$223,642
Nov 20192,46912,67655.302.75$171,404
Oct 20192,45811,72953.472.42$159,796
Sep 20191,51613,88455.052.66$120,349
Aug 20192,34717,41953.112.30$164,789
Jul 20191,88614,66856.272.46$142,209
Jun 20191,95519,05052.782.49$150,642
May 20192,21214,86058.482.74$170,079
Apr 20192,33416,39862.632.75$191,284
Mar 20192,66820,13556.803.06$213,198
Feb 20193,57819,58650.852.79$236,630
Jan 20193,10619,66846.033.23$206,461
Dec 20183,00319,93546.594.19$223,347
Nov 20183,01820,06452.934.24$244,759
Oct 20182,85417,70761.443.40$235,520
Sep 20182,21818,13559.543.11$188,423
Aug 20182,23214,47559.403.07$176,969
Jul 20181,76415,64365.142.93$160,770
Jun 20182,57017,69260.183.08$209,099
May 20183,42418,37365.382.90$277,158
Apr 20182,73219,11463.842.90$229,857
Mar 20184,22322,10461.222.79$320,132
Feb 20183,97817,75861.782.77$294,882
Jan 20182,14716,05162.874.01$199,335
Dec 20172,97416,96557.272.92$219,885
Nov 20172,88616,70055.423.12$212,019
Oct 20172,78018,73149.292.98$192,914
Sep 20173,05819,80847.523.09$206,469
Aug 20172,58119,99445.373.00$177,170
Jul 20173,23921,42843.873.09$208,249
Jun 20172,93023,00742.493.09$195,525
May 20173,60826,20345.373.26$249,206
Apr 20173,73926,48147.933.21$264,257
Mar 20173,90826,20946.772.98$260,976
Feb 20173,83023,39250.452.95$262,291
Jan 20173,15919,95649.413.42$224,312
Dec 20163,20319,45648.763.72$228,610
Nov 20163,75420,28842.492.64$213,156
Oct 20163,76722,94946.193.09$244,916
Sep 20162,87121,09541.553.10$184,698
Aug 20162,76720,98941.442.92$176,043
Jul 20163,30722,29741.622.92$202,841
Jun 20163,49123,87745.352.69$222,446
May 20163,70623,88442.521.99$205,133
Apr 20164,85828,28836.561.99$233,931
Mar 20164,43330,69733.011.79$201,404
Feb 20164,46530,78626.472.06$181,719
Jan 20165,31734,09127.352.36$226,023
Dec 20155,76136,52332.362.00$259,523
Nov 20155,32332,88538.792.17$277,752
Oct 20156,08238,53643.552.43$358,382
Sep 20155,27439,31542.992.76$335,177
Aug 20156,77743,00340.162.87$395,690
Jul 20154,73438,74748.152.95$342,055
Jun 20156,89045,92756.152.88$519,275
May 20156,99648,11855.212.96$528,460
Apr 20156,42544,51149.822.71$440,566
Mar 20158,19554,64742.892.93$511,857
Feb 20159,29149,61044.662.98$562,585
Jan 20158,68734,92543.433.10$485,566
Dec 20149,67451,65954.693.59$714,597
Nov 20148,30258,18270.464.25$832,339
Oct 201415,03784,82178.303.90$1,508,280
Sep 201422,803109,13686.164.05$2,406,210
Aug 201442,034119,77689.394.04$4,240,730
Jul 201431,084102,74096.564.18$3,430,883
Jun 201441,08993,53398.164.74$4,476,351
May 201448,47366,83294.734.73$4,907,733
Apr 201437,00552,84595.944.81$3,804,398
Mar 201424,06928,24895.895.06$2,450,821
Feb 201411,21210,31197.406.19$1,155,895
Jan 201410,06217,46590.404.86$994,497
Dec 20133,8793,15691.824.35$369,913
Nov 2013043188.853.74$1,611

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                  753 bbl  × $106.41 =    $80,127
Casinghead gas     8,933 Mcf  × $  3.05 =    $27,208

────────────────────────────────────────────────────
Month total                                 $107,335

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/18587 is the state's own key, not one this site invented.