DEAN, CARRIE S. "B"

Operated by ESTANCIA OIL & GAS, LLC (P-5 254455) in the LAMESA, EAST (SPRABERRY) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 8550District 8AField 51736500OilCasinghead gasSaveExport
Value, all time
$8.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$160 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 6 leases and 7 wells, and the rule below applies to all of them.

Discovered
1955-08-30
as the register files it
Field class
Oil
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 80 acres.

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
OilDisposition186,055 bbl$8,710,488
Casinghead gasProduction22 Mcf$0
Total$8,710,488

22 Mcf of this lease's gas, across 22 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 (2)

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 32.8157, -101.7177. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

32.81567, -101.71770 · 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%
1 of 2 wells
With a plug date
50.0%
1 of 2 wells
Median depth
7,400 ft
1 wells filed one
Completion to plug
63.8 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
150.0%
A plug date is filed
150.0%
BothOn the schedule and plugged. Neither fact cancels the other.
150.0%
NeitherNo plug date, and not on the schedule.
150.0%

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

The one well that filed a depth was drilled to 7,400 ft.

Completions filed
Oct 1955
1 of 2 wells; 1 filed none
Plug dates filed
Aug 2019
1 of 2 wells; 1 filed none

Last completion to plug: a median of 63.8 years across the 1 well that filed both dates, with the middle half between 63.8 years and 63.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-115006381
42-1150064527,400 ftOct 1955Aug 2019Yes

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 2026176098.932.87$17,412
Mar 2026156089.753.15$14,001
Feb 2026145063.503.75$9,208
Jan 2026182059.138.00$10,762
Dec 2025354056.664.41$20,058
Nov 20250058.593.93$0
Oct 2025515059.383.30$30,581
Sep 2025180062.743.08$11,293
Aug 2025359063.933.01$22,951
Jul 2025180066.743.32$12,013
Jun 2025180066.483.13$11,966
May 2025361060.553.23$21,859
Apr 2025361062.363.54$22,512
Mar 2025205067.704.27$13,879
Feb 2025362070.884.34$25,659
Jan 2025366074.324.28$27,201
Dec 2024181068.993.12$12,487
Nov 2024359069.052.20$24,789
Oct 2024365071.372.28$26,050
Sep 2024360069.612.36$25,060
Aug 2024180075.632.06$13,613
Jul 2024355079.932.15$28,375
Jun 2024356078.082.63$27,796
May 2024360078.812.20$28,372
Apr 2024363084.451.66$30,655
Mar 2024542080.301.55$43,523
Feb 20240076.091.78$0
Jan 2024367073.023.30$26,798
Dec 2023363071.262.61$25,867
Nov 2023732077.892.81$57,015
Oct 20230085.443.09$0
Sep 2023361089.042.74$32,143
Aug 2023357080.522.67$28,746
Jul 2023528074.852.64$39,521
Jun 2023361068.962.26$24,895
May 20230070.622.23$0
Apr 2023184078.122.24$14,374
Mar 2023355072.852.39$25,862
Feb 2023540075.112.47$40,559
Jan 2023365076.533.39$27,933
Dec 2022552076.415.73$42,178
Nov 2022181085.005.65$15,385
Oct 2022180087.185.86$15,692
Sep 2022358084.888.16$30,387
Aug 2022525094.529.13$49,623
Jul 20223570101.587.54$36,264
Jun 20223560115.097.98$40,972
May 20225400109.378.43$59,060
Apr 20221790104.226.84$18,655
Mar 20223630108.885.08$39,523
Feb 2022363091.054.86$33,051
Jan 2022364081.844.54$29,790
Dec 2021367071.323.90$26,174
Nov 2021543077.435.24$42,044
Oct 2021358079.795.71$28,565
Sep 2021540069.865.35$37,724
Aug 2021180066.024.22$11,884
Jul 2021180070.783.98$12,740
Jun 2021176069.493.38$12,230
May 2021350063.483.02$22,218
Apr 2021361060.362.76$21,790
Mar 2021721061.302.72$44,197
Feb 20210057.805.55$0
Jan 2021547050.412.81$27,574
Dec 2020365044.642.68$16,294
Nov 2020540038.772.71$20,936
Oct 2020360036.972.48$13,309
Sep 2020537037.091.99$19,917
Aug 2020342039.982.39$13,673
Jul 2020539038.371.83$20,681
Jun 2020181034.901.69$6,317
May 20200016.921.81$0
Apr 2020366014.751.80$5,399
Mar 2020542030.341.86$16,444
Feb 20200049.881.98$0
Jan 2020363057.252.09$20,782
Dec 2019548059.012.30$32,337
Nov 2019359055.302.75$19,853
Oct 2019362053.472.42$19,356
Sep 2019362055.052.66$19,928
Aug 2019360053.112.30$19,120
Jul 2019364056.272.46$20,482
Jun 2019544052.782.49$28,712
May 2019339058.482.74$19,825
Apr 2019348062.632.75$21,795
Mar 2019505056.803.06$28,684
Feb 2019358050.852.79$18,204
Jan 2019543046.033.23$24,994
Dec 2018360046.594.19$16,772
Nov 2018364052.934.24$19,267
Oct 2018364061.443.40$22,364
Sep 2018360059.543.11$21,434
Aug 2018534059.403.07$31,720
Jul 2018361065.142.93$23,516
Jun 2018344060.183.08$20,702
May 2018541065.382.90$35,371
Apr 2018357063.842.90$22,791
Mar 2018359061.222.79$21,978
Feb 2018366061.782.77$22,611
Jan 2018724062.874.01$45,518
Dec 2017366057.272.92$20,961
Nov 2017361055.423.12$20,007
Oct 2017362049.292.98$17,843
Sep 2017360047.523.09$17,107
Aug 2017362045.373.00$16,424
Jul 2017182043.873.09$7,984
Jun 2017181042.493.09$7,691
May 2017522045.373.26$23,683
Apr 2017179047.933.21$8,579
Mar 2017537046.772.98$25,115
Feb 2017183050.452.95$9,232
Jan 2017363049.413.42$17,936
Dec 2016362048.763.72$17,651
Nov 2016180042.492.64$7,648
Oct 2016339046.193.09$15,658
Sep 2016358041.553.10$14,875
Aug 2016178041.442.92$7,376
Jul 2016178041.622.92$7,408
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 2015353048.152.95$16,997
Jun 2015538056.152.88$30,209
May 2015182055.212.96$10,048
Apr 2015361049.822.71$17,985
Mar 2015548042.892.93$23,504
Feb 2015360044.662.98$16,078
Jan 2015181043.433.10$7,861
Dec 2014371054.693.59$20,290
Nov 2014356070.464.25$25,084
Oct 2014366078.303.90$28,658
Sep 2014178086.164.05$15,336
Aug 2014546089.394.04$48,807
Jul 2014359096.564.18$34,665
Jun 2014363098.164.74$35,632
May 2014342094.734.73$32,398
Apr 2014360095.944.81$34,538
Mar 2014544095.895.06$52,164
Feb 2014181097.406.19$17,629
Jan 2014552090.404.86$49,901
Dec 2013367091.824.35$33,698
Nov 2013366088.853.74$32,519
Oct 2013356097.423.78$34,682
Sep 20133560104.113.72$37,063
Aug 20135290104.253.52$55,148
Jul 20133640102.523.72$37,317
Jun 2013363094.403.93$34,267
May 2013545094.834.15$51,682
Apr 2013364093.964.28$34,201
Mar 2013733093.623.91$68,623
Feb 2013362091.233.42$33,025
Jan 2013186091.603.42$17,038
Dec 2012681086.773.42$59,090
Nov 2012369086.953.62$32,085
Oct 2012370089.383.40$33,071
Sep 2012520094.672.92$49,228
Aug 2012367092.662.91$34,006
Jul 2012548085.133.02$46,651
Jun 2012554079.822.52$44,220
May 2012363091.612.49$33,254
Apr 20123700101.652.00$37,611
Mar 20125430105.052.22$57,042
Feb 20123340101.102.57$33,767
Jan 2012533098.092.73$52,282
Dec 2011378096.873.24$36,617
Nov 2011368095.723.31$35,225
Oct 2011365084.983.65$31,018
Sep 2011535083.623.99$44,737
Aug 2011543083.404.15$45,286
Jul 2011543094.144.52$51,118
Jun 2011549092.904.64$51,002
May 2011540098.134.40$52,990
Apr 20113670105.964.33$38,887
Mar 2011489096.364.06$47,120
Feb 2011183085.644.18$15,672
Jan 2011550086.504.59$47,575
Dec 2010732085.734.35$62,754
Nov 2010365080.843.80$29,507
Oct 2010181078.103.51$14,136
Sep 2010366072.633.98$26,583
Aug 2010699073.684.42$51,502
Jul 2010363072.554.74$26,336
Jun 2010720070.364.91$50,659
May 2010546071.124.24$38,832
Apr 2010547081.694.12$44,684
Mar 2010365078.394.39$28,612
Feb 2010326073.585.44$23,987
Jan 2010719074.365.96$53,465
Dec 2009553071.445.48$39,506
Nov 2009541074.593.75$40,353
Oct 2009723072.544.11$52,446
Sep 2009467065.543.06$30,607
Aug 2009695067.423.22$46,857
Jul 2009357061.133.46$21,823
Jun 2009360066.163.90$23,818
May 2009366054.743.93$20,035
Apr 2009903046.773.59$42,233
Mar 2009547042.144.06$23,051
Feb 2009184032.814.63$6,037
Jan 2009745035.865.37$26,716
Dec 2008731037.105.98$27,120
Nov 2008550055.496.86$30,520
Oct 2008361075.246.92$27,162
Sep 20085370101.767.88$54,645
Aug 20082930114.228.48$33,466
Jul 20087300131.0811.39$95,688
Jun 20087220131.3313.03$94,820
May 20087260123.1711.57$89,421
Apr 20083600110.3110.45$39,712
Mar 20085460101.909.66$55,637
Feb 2008550092.538.77$50,892
Jan 2008540090.388.21$48,805
Dec 2007885088.337.30$78,172
Nov 2007180091.677.29$16,501
Oct 2007367082.856.92$30,406
Sep 2007181075.846.24$13,727
Aug 2007183069.066.39$12,638
Jul 2007367070.906.39$26,020
Jun 2007364062.007.55$22,568
May 2007361058.747.85$21,205
Apr 2007549059.617.81$32,726
Mar 2007147056.927.30$8,367
Feb 2007750055.108.22$41,325
Jan 2007730050.306.73$36,719
Dec 2006182056.656.92$10,310
Nov 2006553054.207.62$29,973
Oct 2006361054.906.01$19,819
Sep 2006183060.085.04$10,995
Aug 2006182068.717.34$12,505
Jul 2006183069.376.34$12,695
Jun 2006732066.286.38$48,517
May 2006359066.016.42$23,698
Apr 2006736064.397.36$47,391
Mar 2006733056.707.08$41,561
Feb 2006369057.597.75$21,251
Jan 2006557060.598.93$33,749
Dec 2005369054.9413.42$20,273
Nov 2005544054.6910.59$29,751
Oct 2005535058.3413.80$31,212
Sep 2005548061.4512.08$33,675
Aug 2005363061.519.80$22,328
Jul 2005689055.697.84$38,370
Jun 2005364052.337.38$19,048
May 2005725045.226.65$32,785
Apr 2005364049.207.36$17,909
Mar 2005359050.377.15$18,083
Feb 2005556045.226.31$25,142
Jan 2005547043.166.32$23,609
Dec 2004733039.866.75$29,217
Nov 2004183045.286.33$8,286
Oct 2004728049.706.52$36,182
Sep 2004357043.245.28$15,437
Aug 2004715042.375.55$30,295
Jul 2004541038.286.08$20,709
Jun 2004183036.106.43$6,606
May 2004536037.486.49$20,089
Apr 2004896034.475.86$30,885
Mar 2004360034.365.53$12,370
Feb 2004543032.455.51$17,620
Jan 2004542032.036.30$17,360
Dec 2003548030.266.30$16,582
Nov 2003539028.804.60$15,523
Oct 2003715028.174.76$20,142
Sep 2003356026.314.75$9,366
Aug 2003359029.765.13$10,684
Jul 2003176029.415.17$5,176
Jun 20030028.565.98$0
May 2003358026.595.97$9,519
Apr 2003363026.675.41$9,681
Mar 2003543031.146.10$16,909
Feb 2003365033.487.93$12,220
Jan 2003739030.315.58$22,399
Dec 2002366026.914.85$9,849
Nov 2002359024.664.14$8,853
Oct 2002543026.464.23$14,368
Sep 2002360027.443.64$9,878
Aug 2002353025.963.16$9,164
Jul 2002184024.583.06$4,523
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 2002361022.003.10$7,942
Feb 2002916018.222.38$16,690
Jan 2002182017.172.38$3,125
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 2001354024.873.05$8,804
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 2001182027.755.77$5,051
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 2000180032.215.66$5,798
Oct 20000031.235.15$0
Sep 20000031.875.19$0
Aug 2000178029.644.54$5,276
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 2000541024.513.12$13,260
Mar 2000543028.422.86$15,432
Feb 2000725027.622.73$20,025
Jan 2000548025.272.48$13,848
Dec 1999658024.282.42$15,976
Nov 1999366023.192.43$8,488
Oct 1999547020.982.80$11,476
Sep 1999548021.752.62$11,919
Aug 1999721019.262.88$13,886
Jul 19991,256017.892.37$22,470
Jun 19990015.942.36$0
May 1999542015.792.32$8,558
Apr 19991,095015.102.21$16,535
Mar 1999730012.471.84$9,103
Feb 199974109.981.82$7,395
Jan 1999730010.381.90$7,577
Dec 19981,27509.201.77$11,730
Nov 19980010.892.19$0
Oct 1998725012.421.97$9,005
Sep 19981,072012.592.08$13,496
Aug 1998902011.301.91$10,193
Jul 19980011.742.24$0
Jun 1998725011.242.24$8,149
May 1998727012.622.21$9,175
Apr 1998912013.042.51$11,892
Mar 19981,073012.802.31$13,734
Feb 1998547013.952.30$7,631
Jan 19981,270014.702.15$18,669
Dec 1997365016.322.41$5,957
Nov 1997725018.193.09$13,188
Oct 1997180019.253.15$3,465
Sep 1997503017.742.95$8,923
Aug 1997723017.862.55$12,913
Jul 1997514017.582.25$9,036
Jun 1997903017.242.26$15,568
May 1997922018.972.31$17,490
Apr 1997914017.882.08$16,342
Mar 1997384018.951.94$7,277
Feb 1997386020.492.21$7,909
Jan 1997784023.483.54$18,408
Dec 1996790023.32$18,423
Nov 1996792021.97$17,400
Oct 1996945023.31$22,028
Sep 19961,587022.22$35,263
Aug 1996347020.26$7,030
Jul 1996568019.55$11,104
Jun 1996701018.73$13,130
May 19961,062019.43$20,635
Apr 1996770021.51$16,563
Mar 1996523019.38$10,136
Feb 19961,332016.98$22,617
Jan 1996575017.07$9,815
Dec 1995895017.19$15,385
Nov 19951,117016.00$17,872
Oct 19951,317015.43$20,321
Sep 1995582016.18$9,417
Aug 1995713015.92$11,351
Jul 19951,073015.24$16,353
Jun 1995899016.41$14,753
May 19951,073017.56$18,842
Apr 1995361017.73$6,401
Mar 19951,038016.44$17,065
Feb 1995913016.58$15,138
Jan 1995545015.92$8,676
Dec 19941,044015.03$15,691
Nov 1994916015.90$14,564
Oct 19941,045115.58$16,281
Sep 19941,273115.29$19,464
Aug 1994699116.13$11,275
Jul 1994538117.56$9,447
Jun 1994885117.09$15,125
May 1994898115.88$14,260
Apr 1994536114.14$7,579
Mar 1994906112.46$11,289
Feb 19941,254112.50$15,675
Jan 1994363112.66$4,596
Dec 19931,271112.33$15,671
Nov 1993726114.49$10,520
Oct 19931,221115.85$19,353
Sep 19931,036115.03$15,571
Aug 1993879115.66$13,765
Jul 19931,242115.46$19,201
Jun 19931,265116.79$21,239
May 19931,096117.68$19,377
Apr 19931,089118.05$19,656
Mar 19931,350118.14$24,489
Feb 19932,002117.90$35,836
Jan 1993847116.93$14,340

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                  176 bbl  × $ 98.93 =    $17,412
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                  $17,412

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/8550 is the state's own key, not one this site invented.