MARY "A"

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 15822District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$14.6 M
Jan 2005 – May 2026
Value, last 12 filed months
$508 k
at the published price for each month
Months reported
257
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
OilDisposition181,505 bbl$12,102,087
Casinghead gasProduction486,893 Mcf$2,449,754
Total$14,551,841

Wells on this lease (3)

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 31.4076, -102.0392. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.40772, -102.03879 · 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
33.3%
1 of 3 wells
With a plug date
33.3%
1 of 3 wells
Median depth
10,465 ft
3 wells filed one
Completion to plug
10.7 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
133.3%
A plug date is filed
133.3%
BothOn the schedule and plugged. Neither fact cancels the other.
133.3%
NeitherNo plug date, and not on the schedule.
266.7%

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 10,465 and 10,503 ft, median 10,465 ft, over the 3 wells that filed a depth.

Completions filed
Jun 2006 – Feb 2015
3 of 3 wells
Plug dates filed
Apr 2017
1 of 3 wells; 2 filed none

Last completion to plug: a median of 10.7 years across the 1 well that filed both dates, with the middle half between 10.7 years and 10.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells

42-46139691110,503 ftFeb 2015
42-46134892410,465 ftAug 2006Apr 2017Yes
42-46134573310,465 ftJun 2006

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 (257)

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

257 months

May 2026477904106.413.05$53,511
Apr 202652356598.932.87$53,362
Mar 20265721,46389.753.15$55,945
Feb 20265701,09763.503.75$40,309
Jan 202638679859.138.00$29,207
Dec 202551584756.664.41$32,918
Nov 20256171,03858.593.93$40,226
Oct 20256151,07759.383.30$40,078
Sep 20254731,22262.743.08$33,436
Aug 20255531,45563.933.01$39,740
Jul 20256131,98566.743.32$47,492
Jun 20255701,34066.483.13$42,086
May 20255621,29160.553.23$38,202
Apr 20255891,45462.363.54$41,882
Mar 20256701,91467.704.27$53,529
Feb 20255851,65270.884.34$48,636
Jan 20257111,88474.324.28$60,903
Dec 20246771,73968.993.12$52,134
Nov 20246911,54169.052.20$51,101
Oct 20247481,48471.372.28$56,770
Sep 20247761,47969.612.36$57,514
Aug 20245941,48475.632.06$47,987
Jul 20245811,58479.932.15$49,840
Jun 20245061,65478.082.63$43,865
May 2024599078.812.20$47,207
Apr 20245791,68584.451.66$51,692
Mar 20247421,86780.301.55$62,467
Feb 20245541,09976.091.78$44,114
Jan 20247881,63573.023.30$62,931
Dec 20239162,13171.262.61$70,838
Nov 20237852,38877.892.81$67,848
Oct 20237882,41085.443.09$74,767
Sep 20236682,23089.042.74$65,578
Aug 20235832,22580.522.67$52,890
Jul 20235472,94174.852.64$48,712
Jun 20235931,72168.962.26$44,780
May 20235712,88570.622.23$46,750
Apr 20236322,04878.122.24$53,955
Mar 20236852,65772.852.39$56,261
Feb 20236101,93375.112.47$50,583
Jan 20235871,89176.533.39$51,329
Dec 20225771,69876.415.73$53,817
Nov 20226021,54285.005.65$59,876
Oct 20225571,62687.185.86$58,094
Sep 20225321,66184.888.16$58,716
Aug 20225791,54394.529.13$68,810
Jul 20226011,629101.587.54$73,336
Jun 20225451,563115.097.98$75,192
May 20224081,626109.378.43$58,335
Apr 2022239919104.226.84$31,192
Mar 2022272962108.885.08$34,499
Feb 20223231,16991.054.86$35,089
Jan 20224101,24681.844.54$39,208
Dec 20214491,38671.323.90$37,427
Nov 20214731,58677.435.24$44,930
Oct 20214571,65279.795.71$45,903
Sep 20214761,46869.865.35$41,109
Aug 20213831,36366.024.22$31,038
Jul 202123584070.783.98$19,978
Jun 20214031,33169.493.38$32,504
May 20213801,44663.483.02$28,486
Apr 20213671,03560.362.76$25,007
Mar 20213431,34861.302.72$24,688
Feb 202117551057.805.55$12,944
Jan 20214181,12050.412.81$24,219
Dec 20205341,07444.642.68$26,711
Nov 20204511,01538.772.71$20,232
Oct 20204051,31536.972.48$18,232
Sep 20203691,19537.091.99$16,066
Aug 20203571,28439.982.39$17,335
Jul 20204111,32338.371.83$18,185
Jun 20204091,25934.901.69$16,402
May 20203231,26116.921.81$7,754
Apr 20202741,24614.751.80$6,290
Mar 20202271,06530.341.86$8,864
Feb 20202001,14049.881.98$12,234
Jan 20202391,37657.252.09$16,565
Dec 20191971,29259.012.30$14,602
Nov 20192311,07455.302.75$15,729
Oct 20192341,02453.472.42$14,989
Sep 20192741,02455.052.66$17,805
Aug 201922695753.112.30$14,208
Jul 20192561,09856.272.46$17,106
Jun 20192561,10352.782.49$16,259
May 20192721,02158.482.74$18,704
Apr 201925092562.632.75$18,202
Mar 201924582456.803.06$16,439
Feb 201918368950.852.79$11,229
Jan 201923288946.033.23$13,549
Dec 20183001,02746.594.19$18,275
Nov 20182411,00552.934.24$17,015
Oct 201824993761.443.40$18,483
Sep 20183071,05159.543.11$21,545
Aug 20183921,01659.403.07$26,400
Jul 201834786265.142.93$25,131
Jun 201828497660.183.08$20,094
May 201833880965.382.90$24,445
Apr 20183141,02763.842.90$23,025
Mar 20183081,39561.222.79$22,743
Feb 201831288961.782.77$21,734
Jan 20183501,48862.874.01$27,970
Dec 201734764357.272.92$21,751
Nov 201729875055.423.12$18,854
Oct 201734582549.292.98$19,467
Sep 201745187547.523.09$24,133
Aug 20175621,09645.373.00$28,791
Jul 20176021,23843.873.09$30,232
Jun 20179401,30042.493.09$43,954
May 201715812445.373.26$7,573
Apr 201725834247.933.21$13,464
Mar 20173932,68846.772.98$26,401
Feb 20174193,23950.452.95$30,702
Jan 20172802,60249.413.42$22,731
Dec 20163411,45248.763.72$22,033
Nov 20164653,39142.492.64$28,725
Oct 20164483,29246.193.09$30,866
Sep 20164581,62941.553.10$24,081
Aug 20166051,86541.442.92$30,525
Jul 20167261,81641.622.92$35,527
Jun 20168401,99245.352.69$43,444
May 201666057542.521.99$29,208
Apr 201638966436.561.99$15,544
Mar 201645798133.011.79$16,845
Feb 201664884026.472.06$18,886
Jan 20168662,31227.352.36$29,152
Dec 20157222,99532.362.00$29,358
Nov 20151,1573,71838.792.17$52,938
Oct 201520073843.552.43$10,501
Sep 20150042.992.76$0
Aug 2015368040.162.87$14,779
Jul 20153811,39748.152.95$22,459
Jun 20151,0986,92856.152.88$81,625
May 20151,83110,69755.212.96$132,704
Apr 20154,40913,50349.822.71$256,203
Mar 20154,0075,65642.892.93$188,459
Feb 2015541,38444.662.98$6,531
Jan 201537664643.433.10$18,333
Dec 2014072654.693.59$2,607
Nov 201436588670.464.25$29,485
Oct 201437691278.303.90$32,998
Sep 2014049786.164.05$2,011
Aug 201436874689.394.04$35,906
Jul 201436988296.564.18$39,317
Jun 201436671598.164.74$39,313
May 201437369094.734.73$38,596
Apr 2014069695.944.81$3,347
Mar 201437881495.895.06$40,363
Feb 201437892797.406.19$42,557
Jan 201437998890.404.86$39,064
Dec 20133721,09691.824.35$38,930
Nov 201356687688.853.74$53,564
Oct 201318798197.423.78$21,925
Sep 20133741,063104.113.72$42,889
Aug 2013372845104.253.52$41,758
Jul 2013380608102.523.72$41,218
Jun 201336641694.403.93$36,187
May 20137261,00394.834.15$73,008
Apr 201301,01093.964.28$4,325
Mar 201354954193.623.91$53,514
Feb 201375473191.233.42$71,287
Jan 2013057491.603.42$1,963
Dec 201237678186.773.42$35,297
Nov 201237994386.953.62$36,372
Oct 20123801,20489.383.40$38,058
Sep 20123691,01994.672.92$37,907
Aug 20123731,12692.662.91$37,837
Jul 20127371,34585.133.02$66,804
Jun 20123701,03579.822.52$32,141
May 20123571,03191.612.49$35,270
Apr 20127571,279101.652.00$79,503
Mar 20125341,183105.052.22$58,725
Feb 20123801,128101.102.57$41,317
Jan 20123681,38798.092.73$39,889
Dec 20117581,08796.873.24$76,949
Nov 20117391,24495.723.31$74,856
Oct 20113871,38984.983.65$37,955
Sep 20115741,30383.623.99$53,191
Aug 201135965683.404.15$32,663
Jul 201134492694.144.52$36,567
Jun 20113841,02792.904.64$40,439
May 201137497198.134.40$40,978
Apr 20117761,208105.964.33$87,460
Mar 20117401,25196.364.06$76,382
Feb 20111941,11885.644.18$21,287
Jan 20113631,30386.504.59$37,379
Dec 20107631,39785.734.35$71,486
Nov 2010791980.843.80$4,054
Oct 20103691,03678.103.51$32,454
Sep 20105611,45272.633.98$46,524
Aug 20105631,44273.684.42$47,855
Jul 20105541,62772.554.74$47,899
Jun 20105521,39470.364.91$45,684
May 20103801,56271.124.24$33,641
Apr 20107451,59081.694.12$67,414
Mar 20107562,02978.394.39$68,167
Feb 20105471,63173.585.44$49,125
Jan 20107371,79474.365.96$65,503
Dec 20098861,60971.445.48$72,119
Nov 20095401,71774.593.75$46,720
Oct 20097192,01672.544.11$60,443
Sep 20098931,88465.543.06$64,301
Aug 20097162,05967.423.22$54,900
Jul 20097131,97961.133.46$50,442
Jun 20097091,95566.163.90$54,522
May 20097121,75654.743.93$45,869
Apr 20097151,81946.773.59$39,966
Mar 20097191,74842.144.06$37,394
Feb 20099321,58932.814.63$37,941
Jan 20097561,92535.865.37$37,449
Dec 20089292,03537.105.98$46,629
Nov 20087342,12555.496.86$55,308
Oct 20085491,37475.246.92$50,818
Sep 20081,0822,366101.767.88$128,742
Aug 20088902,540114.228.48$123,203
Jul 20088922,642131.0811.39$147,014
Jun 20087092,666131.3313.03$127,858
May 20088952,404123.1711.57$138,062
Apr 20081,0782,775110.3110.45$147,926
Mar 20081,4372,875101.909.66$174,215
Feb 20081,2613,07292.538.77$143,624
Jan 20081,6183,62190.388.21$175,948
Dec 20071,4403,69188.337.30$154,147
Nov 20071,9734,40491.677.29$212,978
Oct 20071,4334,84682.856.92$152,268
Sep 20071,9455,67775.846.24$182,957
Aug 20072,1276,10269.066.39$185,870
Jul 20071,7826,31070.906.39$166,652
Jun 20072,1326,13862.007.55$178,516
May 20072,3369,02258.747.85$208,006
Apr 20072,7129,58659.617.81$236,483
Mar 20071,4735,95656.927.30$127,334
Feb 20079183,58155.108.22$80,003
Jan 20071,2974,44950.306.73$95,167
Dec 20063,29617,88556.656.92$310,455
Nov 20065,6926,95254.207.62$361,463
Oct 20061,6672,13154.906.01$104,334
Sep 20063,4592,41760.085.04$219,992
Aug 20061,5151,74668.717.34$116,911
Jul 20061,4142,03269.376.34$110,978
Jun 200617611666.286.38$12,406
May 20060266.016.42$13
Apr 200634016164.397.36$23,078
Mar 20069771,66956.707.08$67,217
Feb 20061,1021,57957.597.75$75,703
Jan 20061,1361,76060.598.93$84,553
Dec 20051,4302,20954.9413.42$108,199
Nov 20053671,04854.6910.59$31,168
Oct 20051,1862,50158.3413.80$103,694
Sep 20051,0532,43261.4512.08$94,083
Aug 20058652,67961.519.80$79,452
Jul 20051,0863,84155.697.84$90,607
Jun 20051,5096,47452.337.38$126,751
May 20052,2935,02145.226.65$137,085
Apr 20052,6078,35149.207.36$189,732
Mar 20053,0683,44050.377.15$179,148
Feb 20051,16545245.226.31$55,534
Jan 20052,5851,52843.166.32$121,229

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                  477 bbl  × $106.41 =    $50,758
Casinghead gas       904 Mcf  × $  3.05 =     $2,753

────────────────────────────────────────────────────
Month total                                  $53,511

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/15822 is the state's own key, not one this site invented.