HOLZMARK, EMMA

Operated by ELDON OIL CO. (P-5 247528) in the MACDON (HOCKLEY) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 2143District 02Field 56422500OilCasinghead gasSaveExport
Value, all time
$3.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$115 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 2 leases and 4 wells, and the rule below applies to all of them.

Discovered
1957-08-04
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
OilDisposition62,547 bbl$3,492,912
Casinghead gasProduction21 Mcf$0
Total$3,492,912

21 Mcf of this lease's gas, across 21 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 (3)

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 28.4884, -97.8747. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

28.48837, -97.87476 · 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
33.3%
1 of 3 wells
With a plug date
0.0%
0 of 3 wells
Median depth
4,457 ft
2 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
133.3%
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.
266.7%

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 4,353 and 4,560 ft, median 4,457 ft, over the 2 wells that filed a depth.

Completions filed
Oct 1957 – May 1985
2 of 3 wells; 1 filed none

3 wells

42-025016581A
42-025016653 A4,353 ftMay 1985Yes
42-025016632A4,560 ftOct 1957

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 20261640106.413.05$17,451
Apr 20260098.932.87$0
Mar 2026161089.753.15$14,450
Feb 2026171063.503.75$10,859
Jan 2026172059.138.00$10,170
Dec 2025168056.664.41$9,519
Nov 2025167058.593.93$9,785
Oct 2025170059.383.30$10,095
Sep 20250062.743.08$0
Aug 2025171063.933.01$10,932
Jul 2025161066.743.32$10,745
Jun 2025168066.483.13$11,169
May 2025170060.553.23$10,294
Apr 20250062.363.54$0
Mar 2025168067.704.27$11,374
Feb 2025172070.884.34$12,191
Jan 2025175074.324.28$13,006
Dec 2024165068.993.12$11,383
Nov 20240069.052.20$0
Oct 2024166071.372.28$11,847
Sep 2024328069.612.36$22,832
Aug 20240075.632.06$0
Jul 2024171079.932.15$13,668
Jun 2024170078.082.63$13,274
May 2024173078.812.20$13,634
Apr 2024168084.451.66$14,188
Mar 2024172080.301.55$13,812
Feb 20240076.091.78$0
Jan 2024169073.023.30$12,340
Dec 2023169071.262.61$12,043
Nov 2023174077.892.81$13,553
Oct 2023166085.443.09$14,183
Sep 2023164089.042.74$14,603
Aug 2023170080.522.67$13,688
Jul 2023169074.852.64$12,650
Jun 2023171068.962.26$11,792
May 20230070.622.23$0
Apr 2023175078.122.24$13,671
Mar 20230072.852.39$0
Feb 2023173075.112.47$12,994
Jan 2023174076.533.39$13,316
Dec 2022168076.415.73$12,837
Nov 20220085.005.65$0
Oct 2022168087.185.86$14,646
Sep 2022168084.888.16$14,260
Aug 2022168094.529.13$15,879
Jul 20221720101.587.54$17,472
Jun 20221680115.097.98$19,335
May 20221690109.378.43$18,484
Apr 202200104.226.84$0
Mar 20221700108.885.08$18,510
Feb 2022175091.054.86$15,934
Jan 2022172081.844.54$14,076
Dec 2021170071.323.90$12,124
Nov 2021169077.435.24$13,086
Oct 2021168079.795.71$13,405
Sep 20210069.865.35$0
Aug 2021173066.024.22$11,421
Jul 2021173070.783.98$12,245
Jun 2021170069.493.38$11,813
May 2021170063.483.02$10,792
Apr 2021175060.362.76$10,563
Mar 2021166061.302.72$10,176
Feb 2021174057.805.55$10,057
Jan 20210050.412.81$0
Dec 2020334044.642.68$14,910
Nov 2020170038.772.71$6,591
Oct 2020175036.972.48$6,470
Sep 2020175037.091.99$6,491
Aug 2020344039.982.39$13,753
Jul 2020174038.371.83$6,676
Jun 2020167034.901.69$5,828
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020168030.341.86$5,097
Feb 2020169049.881.98$8,430
Jan 2020165057.252.09$9,446
Dec 2019170059.012.30$10,032
Nov 2019174055.302.75$9,622
Oct 2019168053.472.42$8,983
Sep 2019167055.052.66$9,193
Aug 2019169053.112.30$8,976
Jul 2019166056.272.46$9,341
Jun 2019162052.782.49$8,550
May 2019174058.482.74$10,176
Apr 20190062.632.75$0
Mar 2019166056.803.06$9,429
Feb 20190050.852.79$0
Jan 2019169046.033.23$7,779
Dec 2018160046.594.19$7,454
Nov 2018171052.934.24$9,051
Oct 2018172061.443.40$10,568
Sep 2018168059.543.11$10,003
Aug 2018181059.403.07$10,751
Jul 2018172065.142.93$11,204
Jun 2018173060.183.08$10,411
May 2018168065.382.90$10,984
Apr 2018170063.842.90$10,853
Mar 2018178061.222.79$10,897
Feb 2018172061.782.77$10,626
Jan 2018180062.874.01$11,317
Dec 2017178057.272.92$10,194
Nov 2017187055.423.12$10,364
Oct 2017173049.292.98$8,527
Sep 2017169047.523.09$8,031
Aug 2017182045.373.00$8,257
Jul 20172043.873.09$88
Jun 2017334042.493.09$14,192
May 2017161045.373.26$7,305
Apr 2017166047.933.21$7,956
Mar 2017490046.772.98$22,917
Feb 2017331050.452.95$16,699
Jan 20170049.413.42$0
Dec 2016168048.763.72$8,192
Nov 2016171042.492.64$7,266
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 2016155041.442.92$6,423
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 2016163042.521.99$6,931
Apr 20160036.561.99$0
Mar 2016152033.011.79$5,018
Feb 2016165026.472.06$4,368
Jan 2016170027.352.36$4,650
Dec 2015173032.362.00$5,598
Nov 2015175038.792.17$6,788
Oct 2015161043.552.43$7,012
Sep 2015166042.992.76$7,136
Aug 2015167040.162.87$6,707
Jul 2015338048.152.95$16,275
Jun 2015171056.152.88$9,602
May 2015166055.212.96$9,165
Apr 2015163049.822.71$8,121
Mar 2015170042.892.93$7,291
Feb 2015324044.662.98$14,470
Jan 20150043.433.10$0
Dec 2014329054.693.59$17,993
Nov 2014181070.464.25$12,753
Oct 2014164078.303.90$12,841
Sep 2014165086.164.05$14,216
Aug 2014156089.394.04$13,945
Jul 2014168096.564.18$16,222
Jun 2014162098.164.74$15,902
May 2014146094.734.73$13,831
Apr 2014167095.944.81$16,022
Mar 2014159095.895.06$15,247
Feb 2014165097.406.19$16,071
Jan 2014164090.404.86$14,826
Dec 2013162091.824.35$14,875
Nov 2013162088.853.74$14,394
Oct 2013163097.423.78$15,879
Sep 20131620104.113.72$16,866
Aug 20131630104.253.52$16,993
Jul 20131550102.523.72$15,891
Jun 2013166094.403.93$15,670
May 2013166094.834.15$15,742
Apr 2013329093.964.28$30,913
Mar 2013165093.623.91$15,447
Feb 2013341091.233.42$31,109
Jan 2013165091.603.42$15,114
Dec 2012332086.773.42$28,808
Nov 2012178086.953.62$15,477
Oct 2012341089.383.40$30,479
Sep 2012329094.672.92$31,146
Aug 2012488092.662.91$45,218
Jul 20120085.133.02$0
Jun 2012169079.822.52$13,490
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 20121570101.102.57$15,873
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 2011150084.983.65$12,747
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 2011169094.144.52$15,910
Jun 2011170092.904.64$15,793
May 2011172098.134.40$16,878
Apr 20111150105.964.33$12,185
Mar 2011176096.364.06$16,959
Feb 2011179085.644.18$15,330
Jan 2011160086.504.59$13,840
Dec 2010184085.734.35$15,774
Nov 2010175080.843.80$14,147
Oct 20100078.103.51$0
Sep 2010335072.633.98$24,331
Aug 2010176073.684.42$12,968
Jul 2010169072.554.74$12,261
Jun 2010169070.364.91$11,891
May 2010184071.124.24$13,086
Apr 2010165081.694.12$13,479
Mar 2010338078.394.39$26,496
Feb 20100073.585.44$0
Jan 2010168074.365.96$12,492
Dec 2009182071.445.48$13,002
Nov 2009174074.593.75$12,979
Oct 2009171072.544.11$12,404
Sep 2009168065.543.06$11,011
Aug 2009182067.423.22$12,270
Jul 2009362061.133.46$22,129
Jun 2009179066.163.90$11,843
May 2009183054.743.93$10,017
Apr 2009170046.773.59$7,951
Mar 2009348042.144.06$14,665
Feb 2009168032.814.63$5,512
Jan 2009177035.865.37$6,347
Dec 2008176037.105.98$6,530
Nov 2008357055.496.86$19,810
Oct 2008177075.246.92$13,317
Sep 20081760101.767.88$17,910
Aug 20083240114.228.48$37,007
Jul 20081700131.0811.39$22,284
Jun 20081580131.3313.03$20,750
May 20083480123.1711.57$42,863
Apr 20081750110.3110.45$19,304
Mar 20083390101.909.66$34,544
Feb 2008190092.538.77$17,581
Jan 2008350090.388.21$31,633
Dec 2007169088.337.30$14,928
Nov 2007339091.677.29$31,076
Oct 2007168082.856.92$13,919
Sep 2007341075.846.24$25,861
Aug 2007158069.066.39$10,911
Jul 2007327070.906.39$23,184
Jun 2007337062.007.55$20,894
May 2007163058.747.85$9,575
Apr 2007342059.617.81$20,387
Mar 2007172056.927.30$9,790
Feb 2007354055.108.22$19,505
Jan 2007176050.306.73$8,853
Dec 2006339056.656.92$19,204
Nov 2006332054.207.62$17,994
Oct 2006345054.906.01$18,941
Sep 2006361060.085.04$21,689
Aug 2006346068.717.34$23,774
Jul 2006358069.376.34$24,834
Jun 2006511066.286.38$33,869
May 2006182066.016.42$12,014
Apr 2006346064.397.36$22,279
Mar 2006346056.707.08$19,618
Feb 2006344057.597.75$19,811
Jan 2006349060.598.93$21,146
Dec 2005174054.9413.42$9,560
Nov 2005347054.6910.59$18,977
Oct 2005517058.3413.80$30,162
Sep 20050061.4512.08$0
Aug 2005167061.519.80$10,272
Jul 2005173055.697.84$9,634
Jun 2005175052.337.38$9,158
May 20050045.226.65$0
Apr 2005174049.207.36$8,561
Mar 2005165050.377.15$8,311
Feb 2005178045.226.31$8,049
Jan 20050043.166.32$0
Dec 2004178039.866.75$7,095
Nov 2004182045.286.33$8,241
Oct 20040049.706.52$0
Sep 2004178043.245.28$7,697
Aug 2004171042.375.55$7,245
Jul 20040038.286.08$0
Jun 2004171036.106.43$6,173
May 2004168037.486.49$6,297
Apr 2004178034.475.86$6,136
Mar 2004165034.365.53$5,669
Feb 20040032.455.51$0
Jan 2004163032.036.30$5,221
Dec 2003160030.266.30$4,842
Nov 2003167028.804.60$4,810
Oct 20030028.174.76$0
Sep 2003173026.314.75$4,552
Aug 2003169029.765.13$5,029
Jul 2003162029.415.17$4,764
Jun 20030028.565.98$0
May 2003159026.595.97$4,228
Apr 2003171026.675.41$4,561
Mar 2003170031.146.10$5,294
Feb 2003171033.487.93$5,725
Jan 20030030.315.58$0
Dec 2002176026.914.85$4,736
Nov 2002170024.664.14$4,192
Oct 2002167026.464.23$4,419
Sep 20021027.443.64$27
Aug 2002175025.963.16$4,543
Jul 2002173024.583.06$4,252
Jun 2002173023.733.34$4,105
May 20020024.663.58$0
Apr 2002175023.653.51$4,139
Mar 2002172022.003.10$3,784
Feb 2002170018.222.38$3,097
Jan 2002174017.172.38$2,988
Dec 20011016.932.36$17
Nov 2001180018.072.41$3,253
Oct 2001173019.782.53$3,422
Sep 2001170024.262.25$4,124
Aug 20010024.873.05$0
Jul 2001172023.933.20$4,116
Jun 2001172024.563.82$4,224
May 2001179025.524.31$4,568
Apr 20010024.685.34$0
Mar 2001178024.545.38$4,368
Feb 2001174027.755.77$4,829
Jan 2001175027.478.40$4,807
Dec 20000026.889.12$0
Nov 2000174032.215.66$5,605
Oct 2000179031.235.15$5,590
Sep 2000174031.875.19$5,545
Aug 2000176029.644.54$5,217
Jul 2000169028.534.09$4,822
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 2000174028.422.86$4,945
Feb 2000170027.622.73$4,695
Jan 2000175025.272.48$4,422
Dec 19990024.282.42$0
Nov 1999175023.192.43$4,058
Oct 1999174020.982.80$3,651
Sep 1999176021.752.62$3,828
Aug 19990019.262.88$0
Jul 1999176017.892.37$3,149
Jun 1999174015.942.36$2,774
May 19991015.792.32$16
Apr 1999178015.102.21$2,688
Mar 1999178012.471.84$2,220
Feb 1999009.981.82$0
Jan 1999175010.381.90$1,817
Dec 199817709.201.77$1,628
Nov 1998178010.892.19$1,938
Oct 19981012.421.97$12
Sep 1998173012.592.08$2,178
Aug 1998176011.301.91$1,989
Jul 19980011.742.24$0
Jun 1998173011.242.24$1,945
May 1998169012.622.21$2,133
Apr 1998178013.042.51$2,321
Mar 19980012.802.31$0
Feb 1998172013.952.30$2,399
Jan 1998175014.702.15$2,573
Dec 19971016.322.41$16
Nov 1997173018.193.09$3,147
Oct 1997173019.253.15$3,330
Sep 1997177017.742.95$3,140
Aug 19970017.862.55$0
Jul 1997179017.582.25$3,147
Jun 1997178017.242.26$3,069
May 19971018.972.31$19
Apr 1997176017.882.08$3,147
Mar 1997182018.951.94$3,449
Feb 1997183020.492.21$3,750
Jan 19970023.483.54$0
Dec 1996177023.32$4,128
Nov 19960021.97$0
Oct 1996177023.31$4,126
Sep 1996175022.22$3,889
Aug 19961020.26$20
Jul 1996163019.55$3,187
Jun 1996180018.73$3,371
May 1996181019.43$3,517
Apr 19960021.51$0
Mar 1996177019.38$3,430
Feb 1996170016.98$2,887
Jan 19960017.07$0
Dec 1995179017.19$3,077
Nov 1995178016.00$2,848
Oct 19950015.43$0
Sep 1995176016.18$2,848
Aug 1995178015.92$2,834
Jul 1995172015.24$2,621
Jun 19951016.41$16
May 1995177017.56$3,108
Apr 19950017.73$0
Mar 1995184016.44$3,025
Feb 1995181016.58$3,001
Jan 19950015.92$0
Dec 1994181015.03$2,720
Nov 1994181015.90$2,878
Oct 19940015.58$0
Sep 1994176115.29$2,691
Aug 19940116.13$0
Jul 1994179117.56$3,143
Jun 1994175117.09$2,991
May 19940115.88$0
Apr 1994179114.14$2,531
Mar 19940112.46$0
Feb 1994183112.50$2,288
Jan 19940112.66$0
Dec 1993180112.33$2,219
Nov 1993172114.49$2,492
Oct 19930115.85$0
Sep 1993177115.03$2,660
Aug 19930115.66$0
Jul 1993180115.46$2,783
Jun 19930116.79$0
May 1993183117.68$3,235
Apr 1993171118.05$3,087
Mar 19930118.14$0
Feb 1993169117.90$3,025
Jan 19930116.93$0

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                  164 bbl  × $106.41 =    $17,451
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $17,451

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. 02/O/2143 is the state's own key, not one this site invented.