SUNDOWN, NE. (SAN ANDRES) UNIT

Operated by AVIATOR ENERGY, LLC (P-5 103337) 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 64587District 8AField 83991001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$12.2 M
Jan 1993 – May 2026
Value, last 12 filed months
$116 k
at the published price for each month
Months reported
401
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 160 leases and 6,532 wells, and the rule below applies to all of them.

Discovered
1937-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
880 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 17 acres. The field rule took effect on 1993-02-02.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: UNITS MAY BE 17.7 AC. OR UP TO 35.4 AC.

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
OilDisposition310,691 bbl$11,861,946
Casinghead gasProduction105,735 Mcf$375,971
Total$12,237,917

27,161 Mcf of this lease's gas, across 48 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.

Wells on this lease (24)

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 33.5144, -102.4339. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.4 miles.

33.51488, -102.43390 · 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
66.7%
16 of 24 wells
With a plug date
66.7%
16 of 24 wells
Median depth
5,010 ft
23 wells filed one
Completion to plug
8.3 years
median over 16 wells

What the state filed about each well

On the RRC proration schedule
1666.7%
A plug date is filed
1666.7%
BothOn the schedule and plugged. Neither fact cancels the other.
1666.7%
NeitherNo plug date, and not on the schedule.
833.3%

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

Total depth in feet, 23 of 24 wells. Median 5,010 ft, with the middle half between 4,987 and 5,027 ft; the shallowest is 4,950 ft and the deepest 7,850 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

Last completion by decade, 24 of 24 wells, Jan 1980 – Nov 2024. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jan 1980 – Nov 2024
24 of 24 wells
Plug dates filed
May 1988 – Mar 2023
16 of 24 wells; 8 filed none

Last completion to plug: a median of 8.3 years across the 16 wells that filed both dates, with the middle half between 6.9 years and 11.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

24 wells

42-21933917184,999 ftNov 2024
42-21931923257,850 ftSep 2021Mar 2023Yes
42-21934752237,500 ftApr 2019
42-21932759135,000 ftOct 2001
42-21933918195,002 ftOct 2000
42-21933920217,721 ftSep 2000
42-2193269034,950 ftAug 2000Apr 2012Yes
42-2193275365,025 ftAug 1997Mar 2011Yes
42-21932792105,020 ftAug 1997Oct 1999Yes
42-2193308624,975 ftMay 1997Oct 2006Yes
42-21932545227,800 ftSep 1985Jan 1989Yes
42-2193307744,960 ftNov 1983Nov 1991Yes
42-2193270714,968 ftNov 1983May 1992Yes
42-21932994155,019 ftNov 1983Feb 1993Yes
42-2193285084,998 ftNov 1983Nov 1991Yes
42-21933022125,034 ftNov 1983May 1990Yes
42-21933947174,984 ftSep 1983
42-2193307654,990 ftApr 1981May 1988Yes
42-21933013205,010 ftNov 1980May 1988Yes
42-21932993145,025 ftNov 1980Nov 2010Yes
42-21932851115,029 ftSep 1980Feb 1993Yes
42-2193279174,972 ftApr 1980Mar 2023Yes
42-219327909Feb 1980
42-21932757165,025 ftJan 1980

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 (401)

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

401 months

May 202600106.413.05$0
Apr 2026168098.932.87$16,620
Mar 2026161089.753.15$14,450
Feb 20260063.503.75$0
Jan 2026168059.138.00$9,934
Dec 2025168056.664.41$9,519
Nov 2025170058.593.93$9,960
Oct 20250059.383.30$0
Sep 2025171062.743.08$10,729
Aug 2025171063.933.01$10,932
Jul 2025180066.743.32$12,013
Jun 2025336066.483.13$22,337
May 2025170060.553.23$10,294
Apr 2025180062.363.54$11,225
Mar 2025170067.704.27$11,509
Feb 2025338070.884.34$23,957
Jan 2025170074.324.28$12,634
Dec 2024171068.993.12$11,797
Nov 20240069.052.20$0
Oct 2024261071.372.28$18,628
Sep 2024176069.612.36$12,251
Aug 2024350075.632.06$26,471
Jul 2024166079.932.15$13,268
Jun 2024335078.082.63$26,157
May 2024180078.812.20$14,186
Apr 20240084.451.66$0
Mar 2024321080.301.55$25,776
Feb 2024174076.091.78$13,240
Jan 2024161073.023.30$11,756
Dec 2023352071.262.61$25,084
Nov 2023339077.892.81$26,405
Oct 20230085.443.09$0
Sep 2023340189.042.74$30,276
Aug 2023175180.522.67$14,094
Jul 2023348174.852.64$26,050
Jun 2023173168.962.26$11,932
May 2023175170.622.23$12,361
Apr 2023170178.122.24$13,283
Mar 2023351172.852.39$25,573
Feb 20230175.112.47$2
Jan 2023150176.533.39$11,483
Dec 2022334176.415.73$25,527
Nov 20220185.005.65$6
Oct 2022330187.185.86$28,775
Sep 2022175184.888.16$14,862
Aug 20220194.529.13$9
Jul 20224811101.587.54$48,868
Jun 202201115.097.98$8
May 20223501109.378.43$38,288
Apr 20221771104.226.84$18,454
Mar 20221521108.885.08$16,555
Feb 2022174191.054.86$15,848
Jan 2022171181.844.54$13,999
Dec 2021165171.323.90$11,772
Nov 2021351177.435.24$27,183
Oct 20210179.795.71$6
Sep 2021173169.865.35$12,091
Aug 2021345166.024.22$22,781
Jul 2021169170.783.98$11,966
Jun 2021344169.493.38$23,908
May 2021172163.483.02$10,922
Apr 20210160.362.76$3
Mar 2021178161.302.72$10,914
Feb 2021351157.805.55$20,293
Jan 2021174150.412.81$8,774
Dec 20200144.642.68$3
Nov 2020355138.772.71$13,766
Oct 20200136.972.48$2
Sep 2020156137.091.99$5,788
Aug 2020348139.982.39$13,915
Jul 2020153138.371.83$5,872
Jun 20200134.901.69$2
May 20200116.921.81$2
Apr 2020170114.751.80$2,509
Mar 2020175130.341.86$5,311
Feb 2020350149.881.98$17,460
Jan 2020176157.252.09$10,078
Dec 2019361159.012.30$21,305
Nov 2019179155.302.75$9,901
Oct 2019350153.472.42$18,717
Sep 2019352155.052.66$19,380
Aug 2019350153.112.30$18,591
Jul 201918114756.272.46$10,547
Jun 201934618752.782.49$18,728
May 201935417458.482.74$21,179
Apr 20193376662.632.75$21,288
Mar 20193327456.803.06$19,084
Feb 20193397350.852.79$17,442
Jan 20193373546.033.23$15,625
Dec 20183544346.594.19$16,673
Nov 20186756152.934.24$35,986
Oct 20181706361.443.40$10,659
Sep 20183099659.543.11$18,696
Aug 201834314959.403.07$20,831
Jul 20184887265.142.93$31,999
Jun 20183398960.183.08$20,675
May 201833914465.382.90$22,582
Apr 201834110363.842.90$22,068
Mar 201851217161.222.79$31,821
Feb 20183364661.782.77$20,885
Jan 20183423962.874.01$21,658
Dec 20175157657.272.92$29,716
Nov 201732814955.423.12$18,642
Oct 20173285349.292.98$16,325
Sep 2017509147.523.09$24,191
Aug 2017341245.373.00$15,477
Jul 2017339143.873.09$14,875
Jun 20173431042.493.09$14,605
May 20175111945.373.26$23,246
Apr 20173386647.933.21$16,412
Mar 20175113946.772.98$24,016
Feb 20173092050.452.95$15,648
Jan 20173386349.413.42$16,916
Dec 20165115048.763.72$25,103
Nov 20163415642.492.64$14,637
Oct 201650517846.193.09$23,876
Sep 20163407941.553.10$14,372
Aug 201633913141.442.92$14,431
Jul 201648010841.622.92$20,293
Jun 201633530845.352.69$16,019
May 201649212042.521.99$21,159
Apr 201634130836.561.99$13,080
Mar 201651035233.011.79$17,467
Feb 201631726326.472.06$8,934
Jan 201650010827.352.36$13,930
Dec 201567616632.362.00$22,208
Nov 201534418038.792.17$13,734
Oct 201548812543.552.43$21,556
Sep 201549625542.992.76$22,026
Aug 201551436740.162.87$21,696
Jul 201568229348.152.95$33,701
Jun 201534038956.152.88$20,212
May 201550940355.212.96$29,293
Apr 201550135749.822.71$25,926
Mar 201567430642.892.93$29,806
Feb 201551528644.662.98$23,851
Jan 201551323843.433.10$23,018
Dec 201468018754.693.59$37,861
Nov 201450426170.464.25$36,622
Oct 201451326178.303.90$41,186
Sep 201451327086.164.05$45,292
Aug 201451435489.394.04$47,375
Jul 201451345096.564.18$51,416
Jun 201449443898.164.74$50,566
May 201466839894.734.73$65,161
Apr 201467033495.944.81$65,886
Mar 201450623395.895.06$49,699
Feb 201467027597.406.19$66,961
Jan 201450417490.404.86$46,407
Dec 201351012291.824.35$47,359
Nov 201348024588.853.74$43,564
Oct 20136608497.423.78$64,615
Sep 2013517183104.113.72$54,505
Aug 2013349179104.253.52$37,014
Jul 2013502326102.523.72$52,677
Jun 201369229694.403.93$66,489
May 201351625294.834.15$49,978
Apr 201350725793.964.28$48,738
Mar 201368629393.623.91$65,370
Feb 201334113491.233.42$31,568
Jan 201351316791.603.42$47,562
Dec 201267211686.773.42$58,706
Nov 20123418986.953.62$29,973
Oct 201250212289.383.40$45,284
Sep 201251516194.672.92$49,225
Aug 201251615592.662.91$48,263
Jul 201269716085.133.02$59,819
Jun 201252027579.822.52$42,199
May 201251426991.612.49$47,757
Apr 2012505242101.652.00$51,816
Mar 2012677163105.052.22$71,481
Feb 2012516150101.102.57$52,553
Jan 201249816598.092.73$49,300
Dec 201151110096.873.24$49,825
Nov 201165411195.723.31$62,968
Oct 201148230984.983.65$42,088
Sep 201168739683.623.99$59,025
Aug 201148933683.404.15$42,177
Jul 201169823694.144.52$66,776
Jun 201151623692.904.64$49,031
May 201131710398.134.40$31,561
Apr 2011673125105.964.33$71,853
Mar 201156714696.364.06$55,228
Feb 201167210385.644.18$57,981
Jan 201184213286.504.59$73,439
Dec 201050733585.734.35$44,922
Nov 201051939280.843.80$43,444
Oct 201051142278.103.51$41,390
Sep 201047838972.633.98$36,265
Aug 201083750173.684.42$63,884
Jul 201050854372.554.74$39,427
Jun 201050556370.364.91$38,296
May 201067430971.124.24$49,244
Apr 201067126981.694.12$55,923
Mar 2010505378.394.39$39,600
Feb 201051319773.585.44$38,819
Jan 201035639474.365.96$28,822
Dec 200968625471.445.48$50,401
Nov 200987743974.593.75$67,062
Oct 200933830072.544.11$25,752
Sep 200954931665.543.06$36,950
Aug 200974841367.423.22$51,759
Jul 200974741561.133.46$47,102
Jun 200955846266.163.90$38,717
May 200974843954.743.93$42,669
Apr 200937834246.773.59$18,906
Mar 200957033642.144.06$25,384
Feb 200974642732.814.63$26,455
Jan 200994034335.865.37$35,551
Dec 200856925637.105.98$22,640
Nov 200855324455.496.86$32,360
Oct 200875620375.246.92$58,287
Sep 2008565281101.767.88$59,708
Aug 2008923237114.228.48$107,436
Jul 2008730327131.0811.39$99,413
Jun 2008561401131.3313.03$78,902
May 2008748355123.1711.57$96,240
Apr 2008808379110.3110.45$93,093
Mar 2008507299101.909.66$54,553
Feb 200880719992.538.77$76,417
Jan 200882022490.388.21$75,950
Dec 200750325988.337.30$46,321
Nov 200767228891.677.29$63,702
Oct 200749936382.856.92$43,855
Sep 200764433975.846.24$50,958
Aug 200750640869.066.39$37,551
Jul 200751042570.906.39$38,874
Jun 200784032862.007.55$54,556
May 200782530958.747.85$50,885
Apr 200765931559.617.81$41,742
Mar 200768142956.927.30$41,895
Feb 200787136355.108.22$50,975
Jan 200756634250.306.73$30,770
Dec 200676930256.656.92$45,653
Nov 200676520654.207.62$43,032
Oct 200676320954.906.01$43,146
Sep 200675932760.085.04$47,248
Aug 200655426568.717.34$40,010
Jul 200670715069.376.34$49,996
Jun 200675313766.286.38$50,783
May 200675927866.016.42$51,888
Apr 200656024764.397.36$37,876
Mar 200652726156.707.08$31,730
Feb 200651734957.597.75$32,479
Jan 200684737960.598.93$54,705
Dec 200588036454.9413.42$53,230
Nov 200569444254.6910.59$42,635
Oct 200570141458.3413.80$46,608
Sep 200569241661.4512.08$47,548
Aug 200586848361.519.80$58,123
Jul 200569753455.697.84$43,004
Jun 200580255352.337.38$46,050
May 200568848745.226.65$34,350
Apr 200587047749.207.36$46,315
Mar 200587134450.377.15$46,334
Feb 200567342645.226.31$33,122
Jan 200589435143.166.32$40,804
Dec 200472633939.866.75$31,227
Nov 200471841445.286.33$35,132
Oct 200490053749.706.52$48,229
Sep 200468856143.245.28$32,713
Aug 200489755742.375.55$41,098
Jul 200490153838.286.08$37,764
Jun 200489852236.106.43$35,776
May 200469150437.486.49$29,172
Apr 200485846934.475.86$32,323
Mar 20041,05550934.365.53$39,065
Feb 200467936232.455.51$24,028
Jan 200484949032.036.30$30,280
Dec 200390251830.266.30$30,559
Nov 20031,03845728.804.60$31,994
Oct 200389852528.174.76$27,795
Sep 200389646526.314.75$25,782
Aug 200389347629.765.13$29,017
Jul 200388559029.415.17$29,079
Jun 200387951128.565.98$28,162
May 200387457526.595.97$26,674
Apr 20031,06647026.675.41$30,972
Mar 200390344231.146.10$30,814
Feb 200387238933.487.93$32,278
Jan 20031,06444730.315.58$34,745
Dec 200290535426.914.85$26,072
Nov 200271442024.664.14$19,345
Oct 200290746426.464.23$25,962
Sep 200270346327.443.64$20,973
Aug 200283752825.963.16$23,399
Jul 200286860024.583.06$23,173
Jun 200290347923.733.34$23,027
May 20021,0787224.663.58$26,842
Apr 2002892423.653.51$21,110
Mar 2002877422.003.10$19,306
Feb 200287825418.222.38$16,601
Jan 200289121617.172.38$15,812
Dec 20011,07117316.932.36$18,541
Nov 200168811418.072.41$12,706
Oct 20011,05815019.782.53$21,307
Sep 200151617924.262.25$12,921
Aug 20011,04222024.873.05$26,586
Jul 200189030223.933.20$22,263
Jun 20011,09044724.563.82$28,480
May 200190544925.524.31$25,030
Apr 20011,05742724.685.34$28,365
Mar 20011,01243924.545.38$27,195
Feb 200185434927.755.77$25,711
Jan 200188832927.478.40$27,157
Dec 20001,07032326.889.12$31,708
Nov 200089723232.215.66$30,205
Oct 20001,03621331.235.15$33,450
Sep 20001,05223631.875.19$34,751
Aug 20001,22734429.644.54$37,930
Jul 200087231528.534.09$26,166
Jun 200085331029.304.40$26,356
May 20001,04835527.263.68$29,875
Apr 20001,05336224.513.12$26,937
Mar 20001,24335828.422.86$36,350
Feb 200091534827.622.73$26,221
Jan 20001,10333425.272.48$28,701
Dec 19991,20624624.282.42$29,878
Nov 19991,10932723.192.43$26,514
Oct 19991,23335420.982.80$26,861
Sep 199987442921.752.62$20,133
Aug 19991,37636719.262.88$27,557
Jul 19991,07320217.892.37$19,675
Jun 19991,37724915.942.36$22,538
May 19991,08033915.792.32$17,840
Apr 19991,57729515.102.21$24,464
Mar 19991,07026912.471.84$13,837
Feb 19991,0971249.981.82$11,173
Jan 19991,0831510.381.90$11,270
Dec 19981,772349.201.77$16,363
Nov 19989448110.892.19$10,457
Oct 19981,2921512.421.97$16,076
Sep 19981,45718512.592.08$18,729
Aug 19981,11222511.301.91$12,995
Jul 19981,38434011.742.24$17,009
Jun 19981,19831111.242.24$14,161
May 19981,53826112.622.21$19,985
Apr 19981,20830813.042.51$16,524
Mar 19981,37930112.802.31$18,346
Feb 19981,02637813.952.30$15,182
Jan 19981,22334514.702.15$18,722
Dec 19971,39048316.322.41$23,849
Nov 19971,55451918.193.09$29,870
Oct 19971,55669619.253.15$32,145
Sep 19971,38461217.742.95$26,361
Aug 19971,39256417.862.55$26,302
Jul 19971,58058917.582.25$29,100
Jun 19971,37659717.242.26$25,070
May 19971,54560118.972.31$30,696
Apr 19971,54849817.882.08$28,715
Mar 19971,70857318.951.94$33,478
Feb 19971,03054320.492.21$22,303
Jan 19971,56830923.483.54$37,910
Dec 19961,73474023.32$40,437
Nov 19961,71481621.97$37,657
Oct 19961,74275123.31$40,606
Sep 19961,85471422.22$41,196
Aug 19962,06978720.26$41,918
Jul 19962,09266019.55$40,899
Jun 19961,70056618.73$31,841
May 19961,51659419.43$29,456
Apr 19961,57138421.51$33,792
Mar 19961,71841519.38$33,295
Feb 19961,56877016.98$26,625
Jan 19961,71759317.07$29,309
Dec 19951,74461217.19$29,979
Nov 19951,87155116.00$29,936
Oct 19951,72878215.43$26,663
Sep 19951,88983516.18$30,564
Aug 19951,72274715.92$27,414
Jul 19951,70177015.24$25,923
Jun 19951,83688016.41$30,129
May 19951,89370617.56$33,241
Apr 19952,05670617.73$36,453
Mar 19952,23467616.44$36,727
Feb 19951,60062116.58$26,528
Jan 19951,78270315.92$28,369
Dec 19941,71266515.03$25,731
Nov 19941,98867715.90$31,609
Oct 19942,0651,10515.58$32,173
Sep 19942,00595215.29$30,656
Aug 19942,14397416.13$34,567
Jul 19941,83783317.56$32,258
Jun 19941,95787317.09$33,445
May 19942,11553015.88$33,586
Apr 19942,02739614.14$28,662
Mar 19942,10017112.46$26,166
Feb 19941,9634212.50$24,538
Jan 19942,2016312.66$27,865
Dec 19932,2229212.33$27,397
Nov 19932,2597414.49$32,733
Oct 19932,28114615.85$36,154
Sep 19932,34744415.03$35,275
Aug 19932,31890115.66$36,300
Jul 19932,42985515.46$37,552
Jun 19932,44849716.79$41,102
May 19932,3296117.68$41,177
Apr 19932,26017318.05$40,793
Mar 19932,34815218.14$42,593
Feb 19932,3607717.90$42,244
Jan 19932,3022916.93$38,973

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.

Apr 2026 — as filed, then multipliedworked
Oil                  168 bbl  × $ 98.93 =    $16,620
Casinghead gas         0 Mcf  × $  2.87 =         $0

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Month total                                  $16,620

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/64587 is the state's own key, not one this site invented.