ARMSTRONG, ELIZABETH

Operated by EXTEX OPERATING COMPANY (P-5 257062) in the SHAFTER LAKE (SAN ANDRES) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 26431District 08Field 82570500Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$6.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$39 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 194 leases and 1,113 wells, and the rule below applies to all of them.

Discovered
1953-04-01
as the register files it
Field class
Oil
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 10 acres. The field rule took effect on 2014-01-07.

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: DIAGONAL LIMITATION, TOP ALLOWABLE ADJUSTED.

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA3none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition136,168 bbl$6,465,444
Casinghead gasProduction23,277 Mcf$53,536
Total$6,518,979

7,396 Mcf of this lease's gas, across 43 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 (6)

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 32.3461, -102.5857. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

32.34558, -102.58609 · 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
0.0%
0 of 6 wells
With a plug date
0.0%
0 of 6 wells
Median depth
4,913 ft
6 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
6100.0%

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 4,800 and 4,935 ft, median 4,913 ft, over the 6 wells that filed a depth.

Completions filed
Feb 1981 – Jan 2012
6 of 6 wells

6 wells

42-00342980104,935 ftJan 2012
42-0034297994,926 ftDec 2011
42-00342983114,935 ftDec 2011
42-0033271484,825 ftMay 1981
42-0033271374,900 ftMay 1981
42-0033247164,800 ftFeb 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 (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 2026172098.932.87$17,016
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 2025176056.664.41$9,972
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 2025175066.743.32$11,680
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 2025174067.704.27$11,780
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 2024178069.052.20$12,291
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 2024180079.932.15$14,387
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 2024183080.301.55$14,695
Feb 20240076.091.78$0
Jan 2024167073.023.30$12,194
Dec 2023186071.262.61$13,254
Nov 20230077.892.81$0
Oct 2023177085.443.09$15,123
Sep 2023166089.042.74$14,781
Aug 2023167080.522.67$13,447
Jul 20230074.852.64$0
Jun 2023168068.962.26$11,585
May 20230070.622.23$0
Apr 2023158078.122.24$12,343
Mar 20230072.852.39$0
Feb 2023175075.112.47$13,144
Jan 2023170076.533.39$13,010
Dec 20220076.415.73$0
Nov 2022171085.005.65$14,535
Oct 2022159087.185.86$13,862
Sep 2022012484.888.16$1,012
Aug 202217312494.529.13$17,484
Jul 2022148124101.587.54$15,969
Jun 2022265120115.097.98$31,456
May 20220124109.378.43$1,046
Apr 2022159120104.226.84$17,391
Mar 2022160124108.885.08$18,050
Feb 202215311291.054.86$14,475
Jan 202215012481.844.54$12,839
Dec 2021012471.323.90$483
Nov 2021300077.435.24$23,229
Oct 2021012479.795.71$709
Sep 202115012069.865.35$11,121
Aug 202130412466.024.22$20,593
Jul 202115312470.783.98$11,323
Jun 2021011269.493.38$379
May 202114712463.483.02$9,706
Apr 2021011260.362.76$309
Mar 202114812461.302.72$9,409
Feb 2021011257.805.55$621
Jan 202115012450.412.81$7,910
Dec 202015112444.642.68$7,072
Nov 2020012038.772.71$325
Oct 2020012436.972.48$307
Sep 202014912037.091.99$5,765
Aug 2020012439.982.39$296
Jul 202018212438.371.83$7,210
Jun 2020012034.901.69$203
May 2020012416.921.81$225
Apr 202016812014.751.80$2,695
Mar 2020012430.341.86$230
Feb 2020011649.881.98$230
Jan 202015612457.252.09$9,191
Dec 201914815559.012.30$9,091
Nov 201934215055.302.75$19,325
Oct 201916015553.472.42$8,930
Sep 201917812055.052.66$10,118
Aug 2019012453.112.30$286
Jul 201917315556.272.46$10,116
Jun 2019012052.782.49$299
May 201915915558.482.74$9,723
Apr 2019021062.632.75$578
Mar 201916012456.803.06$9,468
Feb 2019011250.852.79$313
Jan 2019012446.033.23$400
Dec 201815712446.594.19$7,834
Nov 2018012052.934.24$508
Oct 201817212461.443.40$10,989
Sep 201817415059.543.11$10,826
Aug 201834615559.403.07$21,028
Jul 201836615565.142.93$24,296
Jun 201851821060.183.08$31,819
May 201852715565.382.90$34,905
Apr 201835121063.842.90$23,017
Mar 201851121761.222.79$31,888
Feb 2018019661.782.77$542
Jan 2018015562.874.01$621
Dec 201733215557.272.92$19,466
Nov 2017021055.423.12$655
Oct 2017015549.292.98$462
Sep 20171588947.523.09$7,783
Aug 2017012445.373.00$373
Jul 201749215543.873.09$22,063
Jun 201751621042.493.09$22,573
May 201715912445.373.26$7,618
Apr 201746940947.933.21$23,793
Mar 201734121746.772.98$16,596
Feb 201716114050.452.95$8,536
Jan 2017015549.413.42$530
Dec 201632039348.763.72$17,066
Nov 201616015042.492.64$7,195
Oct 201647215546.193.09$22,281
Sep 201631915041.553.10$13,720
Aug 201662915541.442.92$26,519
Jul 201647615541.622.92$20,264
Jun 201664215045.352.69$29,518
May 201646815542.521.99$20,208
Apr 201647815036.561.99$17,774
Mar 201647715533.011.79$16,024
Feb 201646914526.472.06$12,714
Jan 201663315527.352.36$17,679
Dec 201561551932.362.00$20,940
Nov 201533315038.792.17$13,242
Oct 201531215543.552.43$13,964
Sep 201563915042.992.76$27,884
Aug 201546015540.162.87$18,919
Jul 201535615548.152.95$17,598
Jun 201551615056.152.88$29,406
May 201572315555.212.96$40,375
Apr 201555415049.822.71$28,006
Mar 201557615542.892.93$25,160
Feb 201552814044.662.98$23,997
Jan 201518615543.433.10$8,559
Dec 201490515554.693.59$50,051
Nov 201436415570.464.25$26,306
Oct 201454215578.303.90$43,043
Sep 201454715586.164.05$47,757
Aug 201471415589.394.04$64,450
Jul 201466115596.564.18$64,474
Jun 201463921798.164.74$63,752
May 201467515594.734.73$64,675
Apr 201459415595.944.81$57,734
Mar 201480815595.895.06$78,263
Feb 201464315597.406.19$63,588
Jan 20141,01015590.404.86$92,057
Dec 2013690091.824.35$63,356
Nov 2013354088.853.74$31,453
Oct 2013329097.423.78$32,051
Sep 20138250104.113.72$85,891
Aug 20133280104.253.52$34,194
Jul 20134930102.523.72$50,542
Jun 2013356094.403.93$33,606
May 2013516094.834.15$48,932
Apr 2013509093.964.28$47,826
Mar 2013811093.623.91$75,926
Feb 2013503091.233.42$45,889
Jan 2013326091.603.42$29,862
Dec 2012683086.773.42$59,264
Nov 2012327086.953.62$28,433
Oct 2012325089.383.40$29,049
Sep 2012539094.672.92$51,027
Aug 2012719092.662.91$66,623
Jul 2012624085.133.02$53,121
Jun 2012780079.822.52$62,260
May 2012984091.612.49$90,144
Apr 20121,4420101.652.00$146,579
Mar 20126330105.052.22$66,497
Feb 20126490101.102.57$65,614
Jan 2012631098.092.73$61,895
Dec 2011725096.873.24$70,231
Nov 2011163095.723.31$15,602
Oct 2011497084.983.65$42,235
Sep 2011482083.623.99$40,305
Aug 2011161083.404.15$13,427
Jul 20110094.144.52$0
Jun 2011162092.904.64$15,050
May 2011324098.134.40$31,794
Apr 20111630105.964.33$17,271
Mar 2011162096.364.06$15,610
Feb 2011323085.644.18$27,662
Jan 20111,281086.504.59$110,807
Dec 2010163085.734.35$13,974
Nov 2010162080.843.80$13,096
Oct 2010286078.103.51$22,337
Sep 2010245072.633.98$17,794
Aug 2010321073.684.42$23,651
Jul 2010162072.554.74$11,753
Jun 2010329070.364.91$23,148
May 2010325071.124.24$23,114
Apr 2010164081.694.12$13,397
Mar 2010326078.394.39$25,555
Feb 2010165073.585.44$12,141
Jan 2010327074.365.96$24,316
Dec 2009324071.445.48$23,147
Nov 2009325074.593.75$24,242
Oct 2009163072.544.11$11,824
Sep 2009326065.543.06$21,366
Aug 2009163067.423.22$10,989
Jul 2009485061.133.46$29,648
Jun 2009162066.163.90$10,718
May 2009161054.743.93$8,813
Apr 2009162046.773.59$7,577
Mar 2009318042.144.06$13,401
Feb 2009164032.814.63$5,381
Jan 2009375035.865.37$13,448
Dec 2008186037.105.98$6,901
Nov 2008175055.496.86$9,711
Oct 2008345075.246.92$25,958
Sep 200800101.767.88$0
Aug 20084930114.228.48$56,310
Jul 20083430131.0811.39$44,960
Jun 20081690131.3313.03$22,195
May 20083290123.1711.57$40,523
Apr 20083300110.3110.45$36,402
Mar 20083310101.909.66$33,729
Feb 2008174092.538.77$16,100
Jan 2008173090.388.21$15,636
Dec 2007320088.337.30$28,266
Nov 2007159091.677.29$14,576
Oct 2007168082.856.92$13,919
Sep 2007339075.846.24$25,710
Aug 2007170069.066.39$11,740
Jul 2007356070.906.39$25,240
Jun 2007328062.007.55$20,336
May 2007327058.747.85$19,208
Apr 2007303059.617.81$18,062
Mar 2007323056.927.30$18,385
Feb 2007164055.108.22$9,036
Jan 2007333050.306.73$16,750
Dec 2006166056.656.92$9,404
Nov 2006331054.207.62$17,940
Oct 2006331054.906.01$18,172
Sep 20060060.085.04$0
Aug 2006308068.717.34$21,163
Jul 2006326069.376.34$22,615
Jun 2006334066.286.38$22,138
May 2006333066.016.42$21,981
Apr 2006336064.397.36$21,635
Mar 2006163056.707.08$9,242
Feb 2006439057.597.75$25,282
Jan 2006166060.598.93$10,058
Dec 2005161054.9413.42$8,845
Nov 2005329054.6910.59$17,993
Oct 2005340058.3413.80$19,836
Sep 2005169061.4512.08$10,385
Aug 2005169061.519.80$10,395
Jul 2005427055.697.84$23,780
Jun 2005168052.337.38$8,791
May 2005337045.226.65$15,239
Apr 2005336049.207.36$16,531
Mar 2005329050.377.15$16,572
Feb 2005336045.226.31$15,194
Jan 2005166043.166.32$7,165
Dec 2004337039.866.75$13,433
Nov 2004170045.286.33$7,698
Oct 2004508049.706.52$25,248
Sep 2004182043.245.28$7,870
Aug 2004361042.375.55$15,296
Jul 2004180038.286.08$6,890
Jun 2004540036.106.43$19,494
May 2004169037.486.49$6,334
Apr 2004179034.475.86$6,170
Mar 2004349034.365.53$11,992
Feb 2004365032.455.51$11,844
Jan 2004158032.036.30$5,061
Dec 2003343030.266.30$10,379
Nov 2003366028.804.60$10,541
Oct 2003356028.174.76$10,029
Sep 2003357026.314.75$9,393
Aug 2003181029.765.13$5,387
Jul 2003530029.415.17$15,587
Jun 2003179028.565.98$5,112
May 2003505026.595.97$13,428
Apr 2003534026.675.41$14,242
Mar 2003322031.146.10$10,027
Feb 20030033.487.93$0
Jan 2003491030.315.58$14,882
Dec 2002185026.914.85$4,978
Nov 2002360024.664.14$8,878
Oct 2002364026.464.23$9,631
Sep 2002363027.443.64$9,961
Aug 2002538025.963.16$13,966
Jul 2002181024.583.06$4,449
Jun 2002537023.733.34$12,743
May 2002353024.663.58$8,705
Apr 2002519023.653.51$12,274
Mar 2002347022.003.10$7,634
Feb 2002168018.222.38$3,061
Jan 2002356017.172.38$6,113
Dec 2001542016.932.36$9,176
Nov 20010018.072.41$0
Oct 2001367019.782.53$7,259
Sep 2001364024.262.25$8,831
Aug 2001522024.873.05$12,982
Jul 2001356023.933.20$8,519
Jun 2001437024.563.82$10,733
May 2001352025.524.31$8,983
Apr 2001360024.685.34$8,885
Mar 2001520024.545.38$12,761
Feb 2001361027.755.77$10,018
Jan 2001545027.478.40$14,971
Dec 2000186026.889.12$5,000
Nov 2000545032.215.66$17,554
Oct 2000364031.235.15$11,368
Sep 2000545031.875.19$17,369
Aug 2000531029.644.54$15,739
Jul 2000360028.534.09$10,271
Jun 2000360029.304.40$10,548
May 2000534027.263.68$14,557
Apr 2000527024.513.12$12,917
Mar 2000498028.422.86$14,153
Feb 2000536027.622.73$14,804
Jan 2000319025.272.48$8,061
Dec 1999179024.282.42$4,346
Nov 1999360023.192.43$8,348
Oct 1999532020.982.80$11,161
Sep 1999359021.752.62$7,808
Aug 1999476019.262.88$9,168
Jul 1999532017.892.37$9,517
Jun 1999360015.942.36$5,738
May 1999521015.792.32$8,227
Apr 1999631015.102.21$9,528
Mar 1999360012.471.84$4,489
Feb 199936509.981.82$3,643
Jan 1999678010.381.90$7,038
Dec 199836409.201.77$3,349
Nov 1998519010.892.19$5,652
Oct 1998326012.421.97$4,049
Sep 1998534012.592.08$6,723
Aug 1998361011.301.91$4,079
Jul 1998533011.742.24$6,257
Jun 1998524011.242.24$5,890
May 1998356012.622.21$4,493
Apr 1998514013.042.51$6,703
Mar 1998527012.802.31$6,746
Feb 1998528013.952.30$7,366
Jan 1998531014.702.15$7,806
Dec 1997350016.322.41$5,712
Nov 1997537018.193.09$9,768
Oct 1997542019.253.15$10,434
Sep 1997535017.742.95$9,491
Aug 1997346017.862.55$6,180
Jul 1997659017.582.25$11,585
Jun 1997523017.242.26$9,017
May 1997340018.972.31$6,450
Apr 1997669017.882.08$11,962
Mar 1997521018.951.94$9,873
Feb 1997534020.492.21$10,942
Jan 1997369023.483.54$8,664
Dec 1996513023.32$11,963
Nov 1996510021.97$11,205
Oct 1996689023.31$16,061
Sep 1996351022.22$7,799
Aug 1996670020.26$13,574
Jul 199670517219.55$13,783
Jun 199649417218.73$9,253
May 199634417219.43$6,684
Apr 199667917221.51$14,605
Mar 199652217219.38$10,116
Feb 199652217216.98$8,864
Jan 199650217217.07$8,569
Dec 199552717217.19$9,059
Nov 199550317216.00$8,048
Oct 199566417215.43$10,246
Sep 199551817216.18$8,381
Aug 199550217215.92$7,992
Jul 199549817215.24$7,590
Jun 199567817216.41$11,126
May 199549617217.56$8,710
Apr 199552117217.73$9,237
Mar 199567717216.44$11,130
Feb 199551117216.58$8,472
Jan 199565917215.92$10,491
Dec 199450817215.03$7,635
Nov 199450017215.90$7,950
Oct 199451617215.58$8,039
Sep 199450517215.29$7,721
Aug 199466917216.13$10,791
Jul 199454917217.56$9,640
Jun 199448917217.09$8,357
May 199454017215.88$8,575
Apr 199454117214.14$7,650
Mar 199453617212.46$6,679
Feb 199452717212.50$6,588
Jan 199455217212.66$6,988
Dec 199353917212.33$6,646
Nov 199368817214.49$9,969
Oct 199351717215.85$8,194
Sep 199352717215.03$7,921
Aug 199372017215.66$11,275
Jul 199353517215.46$8,271
Jun 199355217216.79$9,268
May 199368817217.68$12,164
Apr 199354117218.05$9,765
Mar 199355217218.14$10,013
Feb 199349417217.90$8,843
Jan 199352817216.93$8,939

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                  172 bbl  × $ 98.93 =    $17,016
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $17,016

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/26431 is the state's own key, not one this site invented.