WEST SUNDOWN UNIT

Operated by OXY USA EOR, LLC (P-5 103869) in the SLAUGHTER field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 70442District 8AField 83991001OilCasinghead gasSave
Value, all time
$459.7 M
May 2016 – May 2026
Value, last 12 filed months
$65.0 M
at the published price for each month
Months reported
121
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
OilDisposition6,471,682 bbl$443,878,708
Casinghead gasProduction4,652,455 Mcf$15,811,382
Total$459,690,091

Wells on this lease (232)

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 33.4760, -102.4939. A lease has no coordinate of its own — that point is the mean of its wells, and they span 4.0 miles.

33.47565, -102.48914 · centre of 200 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
11.0%
22 of 200 wells
With a plug date
11.0%
22 of 200 wells
Median depth
5,033 ft
174 wells filed one
Completion to plug
6.5 years
median over 14 wells

What the state filed about each well

On the RRC proration schedule
2211.0%
A plug date is filed
2211.0%
BothOn the schedule and plugged. Neither fact cancels the other.
2211.0%
NeitherNo plug date, and not on the schedule.
17889.0%

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

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

Total depth in feet, 174 of 200 wells. Median 5,033 ft, with the middle half between 4,995 and 5,079 ft; the shallowest is 4,694 ft and the deepest 12,518 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

80s
90s
00s
10s
20s

Last completion by decade, 177 of 200 wells, Oct 1981 – Dec 2025. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1981 – Dec 2025
177 of 200 wells; 23 filed none
Plug dates filed
Feb 2017 – Aug 2025
22 of 200 wells; 178 filed none

Last completion to plug: a median of 6.5 years across the 14 wells that filed both dates, with the middle half between 3.5 years and 13.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

200 of 232 wells

42-219016531335,075 ftDec 2019Yes
42-219017642095,088 ftOct 2019Yes
42-219017721965,062 ftOct 2019Yes
42-219017802025,078 ftOct 2019Yes
42-219032281435,006 ftJun 2019Yes
42-219315710345,007 ftFeb 2017Yes
42-219323832015,044 ftOct 2019Yes
42-21936048215R5,060 ftJul 2018Yes
42-21900041074
42-219000431455,008 ft
42-21900066178
42-21900173004
42-21900176003
42-21900308066
42-21900312057
42-21900374024
42-21900599036
42-21900601022
42-21901645187
42-21901685096
42-21901698167
42-21901704113
42-21901705091
42-219017630865,000 ftDec 2025
42-219374602255,114 ftNov 2025
42-219017300094,988 ftOct 2025
42-219001091795,070 ftSep 2025
42-219019021165,002 ftAug 2025
42-219374372425,120 ftAug 2025
42-219032110975,054 ftApr 2025
42-219300981155,042 ftApr 2025
42-219017161565,052 ftApr 2025
42-219001101595,062 ftMar 2025
42-219016861865,182 ftDec 2024
42-219018091844,980 ftNov 2024
42-219017180695,020 ftNov 2024
42-219017731275,038 ftOct 2024
42-219001121425,071 ftOct 2024
42-219103350595,058 ftOct 2024
42-219003730384,995 ftJul 2024
42-219016771924,992 ftMay 2024
42-219017540705,028 ftMay 2024
42-219003110585,006 ftApr 2024
42-219017070655,078 ftMar 2024
42-219003090505,001 ftFeb 2024
42-21933618224R5,054 ftJan 2024
42-219328941715,003 ftJan 2024
42-219374612265,160 ftJan 2024
42-219017170465,000 ftDec 2023
42-219022911614,694 ftNov 2023
42-219017220535,007 ftNov 2023
42-219001740065,000 ftNov 2023
42-219026262225,045 ftOct 2023
42-219017350394,990 ftOct 2023
42-219017250194,966 ftAug 2023
42-219003750295,002 ftJul 2023
42-219016520894,995 ftMar 2023
42-219018080855,150 ftMar 2023
42-219003100485,001 ftFeb 2023
42-219017871005,095 ftFeb 2023
42-219001111405,066 ftOct 2022
42-219332870324,990 ftSep 2022
42-219300742205,096 ftSep 2022
42-219332910304,991 ftSep 2022
42-219017210645,083 ftAug 2022
42-219026242195,068 ftApr 2022
42-219000371175,034 ftApr 2022
42-219016891495,030 ftApr 2022
42-219000390945,038 ftMar 2022
42-219000400725,031 ftMar 2022
42-219016821205,054 ftMar 2022
42-219017370414,995 ftMar 2022
42-219017420085,080 ftMar 2022
42-219017661935,080 ftMar 2022
42-219017691065,002 ftMar 2022
42-219017911464,985 ftMar 2022
42-219017921655,002 ftMar 2022
42-219017940335,005 ftFeb 2022
42-219016930925,025 ftFeb 2022Apr 2024Yes
42-219016440104,985 ftFeb 2022
42-219017130455,085 ftFeb 2022
42-219026252165,038 ftFeb 2022
42-219016921365,001 ftFeb 2022
42-219017230545,074 ftJan 2022
42-219017141765,071 ftSep 2021
42-219017310165,004 ftSep 2021
42-219017791035,056 ftSep 2021Aug 2025Yes
42-219017150555,075 ftApr 2021
42-219016871884,993 ftApr 2021
42-219017240615,119 ftApr 2021
42-219016901684,975 ftDec 2019Oct 2023Yes
42-2193739279R5,450 ftDec 2019
42-219017011705,008 ftNov 2019Jun 2023Yes
42-219016750515,013 ftSep 2019
42-219332860154,975 ftSep 2019
42-21937479230H4,960 ftJun 2019
42-219017750815,055 ftMay 2019
42-219374392445,176 ftMay 2019
42-21937464229H5,183 ftApr 2019
42-219017440114,985 ftApr 2019
42-21937462227H5,071 ftApr 2019
42-219374632285,578 ftApr 2019
42-219003140675,011 ftFeb 2019
42-219374312355,117 ftJan 2019
42-219374382435,159 ftJan 2019
42-219374492455,157 ftJan 2019
42-219374322365,155 ftJan 2019
42-219374502475,174 ftDec 2018
42-219017811235,083 ftDec 2018
42-219374292335,161 ftDec 2018
42-219374302345,116 ftDec 2018
42-21937448246D12,518 ftDec 2018
42-219374362415,119 ftNov 2018
42-219374332375,145 ftNov 2018
42-219374592485,117 ftNov 2018
42-219374352405,172 ftNov 2018
42-219374282325,146 ftOct 2018
42-219374342385,145 ftOct 2018
42-219017771245,062 ftAug 2018
42-219016431855,000 ftAug 2018
42-219016951125,002 ftJul 2018
42-219016400874,985 ftJul 2018
42-219017200715,031 ftJul 2018
42-219017670845,002 ftJul 2018
42-219016881515,103 ftJun 2018
42-219017320785,096 ftMay 2018
42-219017611305,008 ftMay 2018
42-219003070685,019 ftMay 2018
42-219319330314,993 ftMay 2018
42-219000441624,997 ftMay 2018
42-219016940904,974 ftApr 2018
42-219017950445,006 ftMar 2018
42-219016830755,056 ftFeb 2018
42-219319410145,300 ftFeb 2018
42-219017270214,984 ftFeb 2018
42-219017062105,079 ftJan 2018
42-219328930235,022 ftJan 2018
42-219017340254,980 ftJan 2018
42-219017290184,980 ftJan 2018
42-219018041044,995 ftOct 2017
42-219018050824,995 ftAug 2017
42-219323822085,044 ftJun 2017Jun 2019Yes
42-219000671605,005 ftJan 2017
42-219000941825,285 ftNov 2016May 2019Yes
42-219003130494,992 ftSep 2016
42-219017190565,309 ftAug 2016
42-219016761095,106 ftJul 2016Dec 2019Yes
42-219017330075,078 ftAug 2015
42-219026232185,068 ftAug 2015
42-219017031355,100 ftMay 2015
42-21930070144R5,004 ftSep 2013
42-219017110634,995 ftNov 2012
42-219032061185,041 ftJul 2012
42-219017960354,940 ftFeb 2012
42-219017101375,047 ftJun 2011
42-219017742005,079 ftOct 2010Oct 2019Yes
42-2193656618912,432 ftNov 2009May 2019Yes
42-219330362175,074 ftAug 2008
42-219032090764,929 ftMay 2008May 2021Yes
42-219032081194,938 ftMay 2008
42-219018031265,052 ftApr 2008May 2021Yes
42-219016840985,060 ftApr 2008
42-219017021114,975 ftApr 2008
42-219018111664,977 ftMar 2008
42-219026282215,071 ftSep 2007Jun 2023Yes
42-21932646052R5,023 ftAug 2007
42-219016551324,976 ftAug 2007
42-219016541084,987 ftAug 2007
42-219025531724,985 ftJun 2006
42-219019030955,035 ftJan 2006
42-219000421805,018 ftJan 2006
42-21934767163R5,020 ftDec 2005Mar 2024Yes
42-219016991694,990 ftJul 2004
42-219017280124,985 ftJan 2004
42-219000381145,035 ftJan 2004
42-219000681414,891 ftDec 2003
42-219336770935,040 ftDec 2003
42-219000691584,905 ftDec 2003
42-21901749175May 2003
42-21901801122Feb 2003
42-21901810102Dec 2001
42-21901771083Nov 2001
42-21901783080Oct 2001
42-21901806105Oct 2001
42-21901641129Sep 2001
42-21901696190Sep 2001
42-21931934153Jul 2001
42-219017001504,975 ftJun 2001
42-21901789148May 2001
42-21901708047Apr 2001
42-219017091395,065 ftFeb 2001
42-21901790183Dec 2000
42-219016570884,963 ftJul 2000
42-219016511314,991 ftJul 2000
42-219016561105,629 ftMar 2000
42-219330352235,108 ftMay 1990
42-219017360274,975 ftMar 1990
42-219016971524,944 ftMay 1986Dec 2019Yes
42-219332981734,982 ftNov 1981
42-219332900134,978 ftOct 1981

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 (121)

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

121 months

May 202674,9000106.413.05$7,970,109
Apr 202671,74343,32998.932.87$7,221,877
Mar 202674,62844,27589.753.15$6,837,304
Feb 202669,72340,99763.503.75$4,581,162
Jan 202674,67745,98159.138.00$4,783,403
Dec 202577,09344,54556.664.41$4,564,683
Nov 202574,08142,54458.593.93$4,507,452
Oct 202574,44943,87459.383.30$4,565,778
Sep 202572,71540,06762.743.08$4,685,422
Aug 202575,82242,34963.933.01$4,974,973
Jul 202576,48736,82066.743.32$5,226,808
Jun 202574,34236,41166.483.13$5,056,176
May 202576,40473,87860.553.23$4,865,060
Apr 202575,01570,92562.363.54$4,929,231
Mar 202579,87172,51767.704.27$5,716,792
Feb 202572,68065,46970.884.34$5,435,749
Jan 202578,80667,20174.324.28$6,144,393
Dec 202480,34967,34968.993.12$5,753,499
Nov 202478,01865,34969.052.20$5,530,809
Oct 202481,19571,44971.372.28$5,957,891
Sep 202476,54568,63269.612.36$5,490,568
Aug 202477,57269,88375.632.06$6,010,983
Jul 202479,67572,77979.932.15$6,524,649
Jun 202477,47969,54778.082.63$6,232,746
May 202479,58771,72178.812.20$6,429,926
Apr 202477,90872,39884.451.66$6,699,453
Mar 202478,34372,10380.301.55$6,402,351
Feb 202472,94867,84576.091.78$5,671,624
Jan 202478,15588,02973.023.30$5,997,168
Dec 202378,64670,04071.262.61$5,787,169
Nov 202375,15166,90977.892.81$6,041,362
Oct 202377,62766,29585.443.09$6,837,122
Sep 202374,76162,74489.042.74$6,828,327
Aug 202373,58460,79780.522.67$6,087,487
Jul 202374,87360,95774.852.64$5,765,280
Jun 202375,45358,42968.962.26$5,335,200
May 202381,011102,14270.622.23$5,948,508
Apr 202378,86557,86878.122.24$6,290,429
Mar 202383,15161,62672.852.39$6,205,031
Feb 202371,21352,87375.112.47$5,479,176
Jan 202378,87157,84476.533.39$6,231,957
Dec 202277,97253,24776.415.73$6,262,897
Nov 202276,27654,42885.005.65$6,790,771
Oct 202278,12742,19487.185.86$7,058,527
Sep 202273,82337,97984.888.16$6,576,145
Aug 202269,72555,79694.529.13$7,099,666
Jul 202270,01549,480101.587.54$7,485,306
Jun 202269,25846,207115.097.98$8,339,506
May 202273,19345,615109.378.43$8,389,792
Apr 202266,50543,350104.226.84$7,227,561
Mar 202269,46142,093108.885.08$7,776,595
Feb 202263,01038,25791.054.86$5,922,945
Jan 202268,65740,82881.844.54$5,804,153
Dec 202165,45136,92371.323.90$4,811,933
Nov 202163,93332,05377.435.24$5,118,189
Oct 202161,12132,10079.795.71$5,060,260
Sep 202157,99727,84769.865.35$4,200,677
Aug 202157,13231,99066.024.22$3,906,871
Jul 202155,83430,24870.783.98$4,072,380
Jun 202155,30928,50969.493.38$3,939,801
May 202153,16324,92463.483.02$3,450,000
Apr 202149,00323,84760.362.76$3,023,601
Mar 202150,21624,85261.302.72$3,145,762
Feb 202142,95434,30557.805.55$2,673,064
Jan 202146,50338,36450.412.81$2,452,029
Dec 202045,40036,66844.642.68$2,124,760
Nov 202042,73232,13538.772.71$1,743,695
Oct 202042,75828,92836.972.48$1,652,459
Sep 202040,82021,60637.091.99$1,557,032
Aug 202039,10318,55239.982.39$1,607,586
Jul 202039,64318,50438.371.83$1,554,874
Jun 202035,15917,01434.901.69$1,255,808
May 202036,64217,18416.921.81$651,167
Apr 202033,58215,91614.751.80$524,053
Mar 202034,51813,21130.341.86$1,071,799
Feb 202031,09715,93549.881.98$1,582,680
Jan 202030,62710,95957.252.09$1,776,352
Dec 201930,29114,12259.012.30$1,820,014
Nov 201928,66439,90555.302.75$1,694,886
Oct 201929,455053.472.42$1,574,959
Sep 201927,913055.052.66$1,536,611
Aug 201927,562119,42153.112.30$1,739,007
Jul 201926,163183,34356.272.46$1,923,227
Jun 201926,22875,28952.782.49$1,571,874
May 201928,01550,82558.482.74$1,777,594
Apr 201926,02925,23162.632.75$1,699,599
Mar 201928,00222,02456.803.06$1,657,953
Feb 201927,47222,35050.852.79$1,459,357
Jan 201928,43614,45946.033.23$1,355,585
Dec 201830,38516,84846.594.19$1,486,153
Nov 201827,00215,03852.934.24$1,492,935
Oct 201831,22415,60661.443.40$1,971,433
Sep 201827,62713,23359.543.11$1,686,040
Aug 201831,81012,53259.403.07$1,927,944
Jul 201831,90213,39965.142.93$2,117,381
Jun 201830,73515,17260.183.08$1,896,315
May 201831,90417,36065.382.90$2,136,241
Apr 201828,87516,53863.842.90$1,891,353
Mar 201828,27012,14161.222.79$1,764,524
Feb 201831,57312,18661.782.77$1,984,288
Jan 201831,47813,87762.874.01$2,034,659
Dec 201731,10612,29457.272.92$1,817,358
Nov 201731,39711,95255.423.12$1,777,292
Oct 201732,51511,61749.292.98$1,637,326
Sep 201731,30811,78647.523.09$1,524,143
Aug 201733,54713,44845.373.00$1,562,431
Jul 201733,96319,56143.873.09$1,550,347
Jun 201733,44017,01342.493.09$1,473,389
May 201732,27027,52545.373.26$1,553,915
Apr 201736,36315,95647.933.21$1,794,123
Mar 201737,28514,81846.772.98$1,788,032
Feb 201730,33812,53450.452.95$1,567,560
Jan 201735,22314,31849.413.42$1,789,319
Dec 201633,93413,22248.763.72$1,703,845
Nov 201633,42613,06842.492.64$1,454,827
Oct 201633,51915,06946.193.09$1,594,810
Sep 201632,58115,29841.553.10$1,401,174
Aug 201632,48415,33741.442.92$1,390,988
Jul 201633,97815,01941.622.92$1,458,085
Jun 201633,91416,01445.352.69$1,581,011
May 201640,94116,86942.521.99$1,774,398

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               74,900 bbl  × $106.41 = $7,970,109
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                               $7,970,109

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. 8A/O/70442 is the state's own key, not one this site invented.