ARMSTRONG, ELIZABETH -C-

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the MEANS field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18408District 08Field 60137001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$4.3 M
Jan 1993 – May 2026
Value, last 12 filed months
$96 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 70 leases and 1,755 wells, and the rule below applies to all of them.

Discovered
1934-12-31
as the register files it
Field class
Oil and gas
the register's own label
Between wells
600 ft
minimum
From a lease line
510 ft
minimum

A drilling unit in this field needs at least 20 acres.

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: SURVEYS

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
OilDisposition122,209 bbl$4,302,433
Casinghead gasProduction10,256 Mcf$31,609
Total$4,334,042

2,855 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 (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 32.3695, -102.5321. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

32.36924, -102.53207 · 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
50.0%
2 of 4 wells
With a plug date
50.0%
2 of 4 wells
Median depth
4,913 ft
4 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
250.0%
A plug date is filed
250.0%
BothOn the schedule and plugged. Neither fact cancels the other.
250.0%
NeitherNo plug date, and not on the schedule.
250.0%

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 4,825 and 9,606 ft, median 4,913 ft, over the 4 wells that filed a depth.

Completions filed
Aug 1969
1 of 4 wells; 3 filed none
Plug dates filed
Aug 1988 – Jul 2009
2 of 4 wells; 2 filed none

4 wells

42-0031010914,905 ftAug 1988Yes
42-0033001734,920 ftJul 2009Yes
42-0033490499,606 ft
42-0033006754,825 ftAug 1969

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 20261430106.413.05$15,217
Apr 2026146098.932.87$14,444
Mar 2026214089.753.15$19,207
Feb 2026141063.503.75$8,954
Jan 2026139059.138.00$8,219
Dec 2025117056.664.41$6,629
Nov 2025124058.593.93$7,265
Oct 202538059.383.30$2,256
Sep 202519062.743.08$1,192
Aug 202543063.933.01$2,749
Jul 202547066.743.32$3,137
Jun 202598066.483.13$6,515
May 20250060.553.23$0
Apr 2025387062.363.54$24,133
Mar 202511611467.704.27$8,340
Feb 20251274870.884.34$9,210
Jan 2025446274.324.28$3,535
Dec 202487068.993.12$6,002
Nov 202413629069.052.20$10,028
Oct 2024478471.372.28$3,546
Sep 202445569.612.36$3,144
Aug 2024461975.632.06$3,518
Jul 2024991179.932.15$7,937
Jun 2024941278.082.63$7,371
May 2024101578.812.20$7,971
Apr 2024207084.451.66$17,481
Mar 2024228080.301.55$18,308
Feb 2024115076.091.78$8,750
Jan 2024217073.023.30$15,845
Dec 2023269171.262.61$19,172
Nov 20230077.892.81$0
Oct 202362085.443.09$5,297
Sep 20230089.042.74$0
Aug 2023124080.522.67$9,984
Jul 2023125174.852.64$9,359
Jun 2023124168.962.26$8,553
May 2023183270.622.23$12,928
Apr 202360278.122.24$4,692
Mar 2023122072.852.39$8,888
Feb 2023110075.112.47$8,262
Jan 202376076.533.39$5,816
Dec 202223076.415.73$1,757
Nov 202268085.005.65$5,780
Oct 202216312587.185.86$14,943
Sep 2022888884.888.16$8,188
Aug 202218212894.529.13$18,371
Jul 2022176264101.587.54$19,869
Jun 2022178121115.097.98$21,451
May 20228843109.378.43$9,987
Apr 2022081104.226.84$554
Mar 2022269205108.885.08$30,329
Feb 202216317691.054.86$15,696
Jan 202215419981.844.54$13,506
Dec 202121720071.323.90$16,256
Nov 2021140077.435.24$10,840
Oct 202123919179.795.71$20,161
Sep 2021216069.865.35$15,090
Aug 2021129066.024.22$8,517
Jul 202120916470.783.98$15,446
Jun 202114919769.493.38$11,020
May 202122621863.483.02$15,004
Apr 2021234060.362.76$14,124
Mar 2021251061.302.72$15,386
Feb 2021164057.805.55$9,479
Jan 2021159050.412.81$8,015
Dec 202073044.642.68$3,259
Nov 2020223038.772.71$8,646
Oct 2020156036.972.48$5,767
Sep 2020237037.091.99$8,790
Aug 2020172039.982.39$6,877
Jul 2020273038.371.83$10,475
Jun 2020163034.901.69$5,689
May 2020162016.921.81$2,741
Apr 2020224014.751.80$3,304
Mar 2020161030.341.86$4,885
Feb 2020227049.881.98$11,323
Jan 202072057.252.09$4,122
Dec 2019230059.012.30$13,572
Nov 2019150055.302.75$8,295
Oct 2019226053.472.42$12,084
Sep 2019157055.052.66$8,643
Aug 2019166053.112.30$8,816
Jul 2019243056.272.46$13,674
Jun 2019152052.782.49$8,023
May 2019239058.482.74$13,977
Apr 2019157062.632.75$9,833
Mar 2019241056.803.06$13,689
Feb 2019169050.852.79$8,594
Jan 2019257046.033.23$11,830
Dec 2018287046.594.19$13,371
Nov 201895052.934.24$5,028
Oct 2018254061.443.40$15,606
Sep 2018173059.543.11$10,300
Aug 2018164059.403.07$9,742
Jul 20180065.142.93$0
Jun 2018169060.183.08$10,170
May 2018251065.382.90$16,410
Apr 2018174063.842.90$11,108
Mar 2018268061.222.79$16,407
Feb 2018178061.782.77$10,997
Jan 2018169062.874.01$10,625
Dec 2017166057.272.92$9,507
Nov 2017254055.423.12$14,077
Oct 2017253049.292.98$12,470
Sep 2017175047.523.09$8,316
Aug 2017174045.373.00$7,894
Jul 2017303043.873.09$13,293
Jun 2017175042.493.09$7,436
May 2017253045.373.26$11,479
Apr 2017168047.933.21$8,052
Mar 2017274046.772.98$12,815
Feb 2017167050.452.95$8,425
Jan 2017167049.413.42$8,251
Dec 2016268048.763.72$13,068
Nov 2016178042.492.64$7,563
Oct 2016247046.193.09$11,409
Sep 201675041.553.10$3,116
Aug 2016243041.442.92$10,070
Jul 2016248041.622.92$10,322
Jun 2016155045.352.69$7,029
May 20162152642.521.99$9,194
Apr 2016121036.561.99$4,424
Mar 2016200033.011.79$6,602
Feb 2016137226.472.06$3,631
Jan 2016174627.352.36$4,773
Dec 2015212032.362.00$6,860
Nov 2015220038.792.17$8,534
Oct 2015156043.552.43$6,794
Sep 2015229042.992.76$9,845
Aug 2015234040.162.87$9,397
Jul 2015248048.152.95$11,941
Jun 2015145056.152.88$8,142
May 2015143055.212.96$7,895
Apr 2015215049.822.71$10,711
Mar 2015195042.892.93$8,364
Feb 2015126044.662.98$5,627
Jan 2015219043.433.10$9,511
Dec 2014136054.693.59$7,438
Nov 2014203070.464.25$14,303
Oct 2014149078.303.90$11,667
Sep 2014151086.164.05$13,010
Aug 2014322089.394.04$28,784
Jul 2014165096.564.18$15,932
Jun 2014232098.164.74$22,773
May 201476094.734.73$7,199
Apr 2014313095.944.81$30,029
Mar 2014153095.895.06$14,671
Feb 2014126097.406.19$12,272
Jan 2014198090.404.86$17,899
Dec 2013198091.824.35$18,180
Nov 2013219088.853.74$19,458
Oct 2013134097.423.78$13,054
Sep 20131780104.113.72$18,532
Aug 20131960104.253.52$20,433
Jul 20131300102.523.72$13,328
Jun 2013203094.403.93$19,163
May 2013152094.834.15$14,414
Apr 2013320093.964.28$30,067
Mar 2013129093.623.91$12,077
Feb 2013117091.233.42$10,674
Jan 2013174091.603.42$15,938
Dec 2012180086.773.42$15,619
Nov 2012139086.953.62$12,086
Oct 201294089.383.40$8,402
Sep 2012150094.672.92$14,201
Aug 2012145092.662.91$13,436
Jul 2012136085.133.02$11,578
Jun 2012123079.822.52$9,818
May 201280091.612.49$7,329
Apr 20121220101.652.00$12,401
Mar 20121220105.052.22$12,816
Feb 20121210101.102.57$12,233
Jan 2012162098.092.73$15,891
Dec 201193096.873.24$9,009
Nov 201120095.723.31$1,914
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 201110083.404.15$834
Jul 201141094.144.52$3,860
Jun 201180092.904.64$7,432
May 201179098.134.40$7,752
Apr 20111190105.964.33$12,609
Mar 2011107096.364.06$10,311
Feb 201184085.644.18$7,194
Jan 2011204086.504.59$17,646
Dec 2010103085.734.35$8,830
Nov 2010122080.843.80$9,862
Oct 201060078.103.51$4,686
Sep 201022072.633.98$1,598
Aug 201045073.684.42$3,316
Jul 201035072.554.74$2,539
Jun 201023070.364.91$1,618
May 201034071.124.24$2,418
Apr 201036081.694.12$2,941
Mar 201036078.394.39$2,822
Feb 201035073.585.44$2,575
Jan 201035074.365.96$2,603
Dec 200935071.445.48$2,500
Nov 200934074.593.75$2,536
Oct 200946072.544.11$3,337
Sep 2009112065.543.06$7,340
Aug 2009105067.423.22$7,079
Jul 200963061.133.46$3,851
Jun 2009114066.163.90$7,542
May 2009105054.743.93$5,748
Apr 2009117046.773.59$5,472
Mar 2009115042.144.06$4,846
Feb 2009114032.814.63$3,740
Jan 2009115035.865.37$4,124
Dec 2008112037.105.98$4,155
Nov 2008115055.496.86$6,381
Oct 2008118075.246.92$8,878
Sep 20081640101.767.88$16,689
Aug 20081300114.228.48$14,849
Jul 20081340131.0811.39$17,565
Jun 20081740131.3313.03$22,851
May 2008880123.1711.57$10,839
Apr 20081770110.3110.45$19,525
Mar 2008870101.909.66$8,865
Feb 2008127092.538.77$11,751
Jan 2008174090.388.21$15,726
Dec 2007172088.337.30$15,193
Nov 2007128091.677.29$11,734
Oct 2007169082.856.92$14,002
Sep 2007134075.846.24$10,163
Aug 2007140069.066.39$9,668
Jul 2007131070.906.39$9,288
Jun 2007138062.007.55$8,556
May 2007248058.747.85$14,568
Apr 2007311059.617.81$18,539
Mar 2007237056.927.30$13,490
Feb 2007228055.108.22$12,563
Jan 2007214050.306.73$10,764
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 2006121068.717.34$8,314
Jul 2006337069.376.34$23,378
Jun 2006166066.286.38$11,002
May 2006168066.016.42$11,090
Apr 2006170064.397.36$10,946
Mar 2006339056.707.08$19,221
Feb 2006174157.597.75$10,028
Jan 2006178360.598.93$10,812
Dec 2005177354.9413.42$9,765
Nov 2005483354.6910.59$26,447
Oct 2005166358.3413.80$9,726
Sep 2005167261.4512.08$10,286
Aug 2005164161.519.80$10,097
Jul 2005703355.697.84$39,174
Jun 200501252.337.38$89
May 200503945.226.65$259
Apr 20053483649.207.36$17,387
Mar 20053494750.377.15$17,915
Feb 20053572845.226.31$16,320
Jan 20053523643.166.32$15,420
Dec 20043464439.866.75$14,089
Nov 20043324045.286.33$15,286
Oct 20041784349.706.52$9,127
Sep 20045274843.245.28$23,041
Aug 20043514342.375.55$15,111
Jul 20043494738.286.08$13,646
Jun 20045154936.106.43$18,907
May 20043454537.486.49$13,223
Apr 20043544734.475.86$12,478
Mar 20043483334.365.53$12,140
Feb 20045142332.455.51$16,806
Jan 20043532932.036.30$11,489
Dec 20033573130.266.30$10,998
Nov 20033463028.804.60$10,103
Oct 20035093028.174.76$14,481
Sep 20033443026.314.75$9,193
Aug 20035243229.765.13$15,758
Jul 20033493529.415.17$10,445
Jun 20035263528.565.98$15,232
May 20031792426.595.97$4,903
Apr 2003201026.675.41$5,361
Mar 20033473531.146.10$11,019
Feb 20035304433.487.93$18,093
Jan 20035245130.315.58$16,167
Dec 20023595226.914.85$9,913
Nov 20023573124.664.14$8,932
Oct 20027197126.464.23$19,325
Sep 20023552127.443.64$9,818
Aug 2002367025.963.16$9,527
Jul 2002354024.583.06$8,701
Jun 20025362623.733.34$12,806
May 20025286924.663.58$13,268
Apr 20023636423.653.51$8,810
Mar 20025436622.003.10$12,151
Feb 20025385218.222.38$9,926
Jan 20023653317.172.38$6,345
Dec 20015463316.932.36$9,322
Nov 20013663318.072.41$6,693
Oct 20016713219.782.53$13,353
Sep 20015433224.262.25$13,245
Aug 20013543424.873.05$8,908
Jul 20014883523.933.20$11,790
Jun 20015393424.563.82$13,368
May 20015293725.524.31$13,659
Apr 20015253624.685.34$13,149
Mar 20015483824.545.38$13,652
Feb 20015553027.755.77$15,574
Jan 20015603627.478.40$15,686
Dec 20003803326.889.12$10,515
Nov 20007413232.215.66$24,049
Oct 20003323331.235.15$10,538
Sep 20007163231.875.19$22,985
Aug 20003583429.644.54$10,766
Jul 20007293628.534.09$20,946
Jun 20007123129.304.40$20,998
May 20003653427.263.68$10,075
Apr 20007213124.513.12$17,768
Mar 20003543428.422.86$10,158
Feb 20003653227.622.73$10,169
Jan 20007863625.272.48$19,952
Dec 19997283424.282.42$17,758
Nov 19993583323.192.43$8,382
Oct 19993883620.982.80$8,241
Sep 19997183521.752.62$15,708
Aug 19993583519.262.88$6,996
Jul 19997313517.892.37$13,161
Jun 19993653515.942.36$5,901
May 19997233415.792.32$11,495
Apr 19997633615.102.21$11,601
Mar 19993703612.471.84$4,680
Feb 1999754369.981.82$7,590
Jan 19993884610.381.90$4,115
Dec 1998751439.201.77$6,985
Nov 19987494410.892.19$8,253
Oct 19983714612.421.97$4,698
Sep 19987514612.592.08$9,551
Aug 19983724511.301.91$4,289
Jul 19987494511.742.24$8,894
Jun 19983754311.242.24$4,311
May 19987454612.622.21$9,503
Apr 19987335013.042.51$9,684
Mar 19983766912.802.31$4,972
Feb 19987406313.952.30$10,468
Jan 19987647014.702.15$11,382
Dec 19977667116.322.41$12,672
Nov 19973816718.193.09$7,137
Oct 19977647019.253.15$14,927
Sep 19973766917.742.95$6,874
Aug 19977447517.862.55$13,479
Jul 19977517317.582.25$13,367
Jun 19973846917.242.26$6,776
May 19971,1167218.972.31$21,337
Apr 19973867217.882.08$7,052
Mar 19977568518.951.94$14,491
Feb 19977727720.492.21$15,988
Jan 19973729123.483.54$9,057
Dec 19967667423.32$17,863
Nov 19967457821.97$16,368
Oct 19967428823.31$17,296
Sep 19963879022.22$8,599
Aug 19967548620.26$15,276
Jul 19967548919.55$14,741
Jun 19967428318.73$13,898
May 19967609019.43$14,767
Apr 19963884121.51$8,346
Mar 1996784919.38$15,194
Feb 1996770916.98$13,075
Jan 1996395917.07$6,743
Dec 1995787917.19$13,529
Nov 1995792916.00$12,672
Oct 1995571815.43$8,811
Sep 1995778916.18$12,588
Aug 1995763915.92$12,147
Jul 1995731915.24$11,140
Jun 1995759916.41$12,455
May 1995765917.56$13,433
Apr 1995470817.73$8,333
Mar 1995434916.44$7,135
Feb 19959302616.58$15,419
Jan 199547013815.92$7,482
Dec 199492215915.03$13,858
Nov 199445811215.90$7,282
Oct 199492212915.58$14,365
Sep 199446013215.29$7,033
Aug 199492413816.13$14,904
Jul 199444213517.56$7,762
Jun 19941,16613617.09$19,927
May 199447214215.88$7,495
Apr 19941,09113914.14$15,427
Mar 199442613812.46$5,308
Feb 19949391112.50$11,738
Jan 1994460112.66$5,824
Dec 1993903112.33$11,134
Nov 1993933114.49$13,519
Oct 1993405115.85$6,419
Sep 19934481415.03$6,733
Aug 19931,37525115.66$21,533
Jul 1993415515.46$6,416
Jun 19934443516.79$7,455
May 19938873417.68$15,682
Apr 19934703618.05$8,484
Mar 19939433718.14$17,106
Feb 19939433417.90$16,880
Jan 19934573616.93$7,737

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                  143 bbl  × $106.41 =    $15,217
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $15,217

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. 08/O/18408 is the state's own key, not one this site invented.