UNIVERSITY ISABELL

Operated by HIGHMARK ENERGY OPERATING, LLC (P-5 385847) 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 11987District 08Field 82570500Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$831 k
Jan 1993 – May 2026
Value, last 12 filed months
$0
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.

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
OilDisposition13,309 bbl$807,850
Casinghead gasProduction5,609 Mcf$22,961
Total$830,810

20 Mcf of this lease's gas, across 20 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 (1)

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 32.3661, -102.7235. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

32.36608, -102.72351 · 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 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
no depth filed
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.
1100.0%

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.

1 well

42-003045511

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 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20184065.382.90$262
Apr 2018296263.842.90$2,031
Mar 2018357461.222.79$2,349
Feb 201831061.782.77$1,915
Jan 201827062.874.01$1,697
Dec 201728057.272.92$1,604
Nov 201728055.423.12$1,552
Oct 201733049.292.98$1,627
Sep 201731047.523.09$1,473
Aug 201728045.373.00$1,270
Jul 201732043.873.09$1,404
Jun 201723042.493.09$977
May 201745045.373.26$2,042
Apr 201727047.933.21$1,294
Mar 201731046.772.98$1,450
Feb 201721050.452.95$1,059
Jan 201734049.413.42$1,680
Dec 201620048.763.72$975
Nov 201627042.492.64$1,147
Oct 201626046.193.09$1,201
Sep 201627041.553.10$1,122
Aug 201624041.442.92$995
Jul 201620041.622.92$832
Jun 201624045.352.69$1,088
May 201622042.521.99$935
Apr 201628036.561.99$1,024
Mar 201627033.011.79$891
Feb 201633026.472.06$874
Jan 201629027.352.36$793
Dec 2015242632.362.00$829
Nov 2015222538.792.17$908
Oct 2015231243.552.43$1,031
Sep 2015231842.992.76$1,038
Aug 2015292440.162.87$1,234
Jul 2015312248.152.95$1,557
Jun 201531056.152.88$1,741
May 2015282455.212.96$1,617
Apr 2015251449.822.71$1,283
Mar 2015372342.892.93$1,654
Feb 2015331644.662.98$1,521
Jan 2015224343.433.10$1,089
Dec 2014353654.693.59$2,043
Nov 20147811870.464.25$5,998
Oct 20147710678.303.90$6,443
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20148096.564.18$772
Jun 2014473598.164.74$4,779
May 2014393694.734.73$3,865
Apr 2014491695.944.81$4,778
Mar 20149315195.895.06$9,681
Feb 2014463397.406.19$4,685
Jan 2014762290.404.86$6,977
Dec 2013707591.824.35$6,754
Nov 2013768188.853.74$7,055
Oct 201311111097.423.78$11,229
Sep 201311465104.113.72$12,110
Aug 2013114123104.253.52$12,318
Jul 201313352102.523.72$13,828
Jun 20131214394.403.93$11,592
May 20131216094.834.15$11,723
Apr 20131214993.964.28$11,579
Mar 2013895793.623.91$8,555
Feb 2013487591.233.42$4,636
Jan 2013714791.603.42$6,664
Dec 2012388086.773.42$3,571
Nov 2012447286.953.62$4,087
Oct 2012575489.383.40$5,278
Sep 201255094.672.92$5,207
Aug 2012764792.662.91$7,179
Jul 2012995885.133.02$8,603
Jun 20121314679.822.52$10,572
May 20121244891.612.49$11,479
Apr 201219861101.652.00$20,249
Mar 201214766105.052.22$15,589
Feb 20127959101.102.57$8,139
Jan 2012863498.092.73$8,529
Dec 20111063196.873.24$10,369
Nov 2011863195.723.31$8,335
Oct 2011685284.983.65$5,968
Sep 2011481583.623.99$4,074
Aug 2011351883.404.15$2,994
Jul 2011643394.144.52$6,174
Jun 20111364192.904.64$12,825
May 20111127698.134.40$11,325
Apr 201110687105.964.33$11,609
Mar 2011897496.364.06$8,876
Feb 2011646085.644.18$5,732
Jan 20111044486.504.59$9,198
Dec 20101295685.734.35$11,303
Nov 20101108080.843.80$9,196
Oct 20101009078.103.51$8,126
Sep 201013613472.633.98$10,411
Aug 201013615873.684.42$10,719
Jul 20101143772.554.74$8,446
Jun 2010905670.364.91$6,607
May 20101388571.124.24$10,175
Apr 201025014381.694.12$21,012
Mar 201042526678.394.39$34,483
Feb 201038117873.585.44$29,003
Jan 201038720974.365.96$30,024
Dec 200922815271.445.48$17,122
Nov 20099920174.593.75$8,138
Oct 2009576372.544.11$4,394
Sep 20097619865.543.06$5,588
Aug 20091193167.423.22$8,123
Jul 20091632361.133.46$10,044
Jun 20091541866.163.90$10,259
May 2009201054.743.93$11,003
Apr 2009151046.773.59$7,062
Mar 20091917242.144.06$8,341
Feb 20091779432.814.63$6,243
Jan 20092358035.865.37$8,857
Dec 20081408137.105.98$5,678
Nov 20081257755.496.86$7,465
Oct 2008964775.246.92$7,548
Sep 20081300101.767.88$13,229
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20086092.538.77$555
Jan 200826090.388.21$2,350
Dec 200729088.337.30$2,562
Nov 200722091.677.29$2,017
Oct 20071082.856.92$83
Sep 20071075.846.24$76
Aug 20071069.066.39$69
Jul 20071070.906.39$71
Jun 20071062.007.55$62
May 20071058.747.85$59
Apr 20072059.617.81$119
Mar 20072056.927.30$114
Feb 20072055.108.22$110
Jan 20070050.306.73$0
Dec 20062056.656.92$113
Nov 20061054.207.62$54
Oct 20061054.906.01$55
Sep 20062060.085.04$120
Aug 20061068.717.34$69
Jul 20064069.376.34$277
Jun 20063066.286.38$199
May 20063066.016.42$198
Apr 20064064.397.36$258
Mar 20063056.707.08$170
Feb 20061057.597.75$58
Jan 20062060.598.93$121
Dec 20053054.9413.42$165
Nov 20053054.6910.59$164
Oct 20052058.3413.80$117
Sep 20051061.4512.08$61
Aug 20052061.519.80$123
Jul 20051055.697.84$56
Jun 20054052.337.38$209
May 20054045.226.65$181
Apr 20055049.207.36$246
Mar 20054050.377.15$201
Feb 20052045.226.31$90
Jan 20051043.166.32$43
Dec 20041039.866.75$40
Nov 20040045.286.33$0
Oct 20041049.706.52$50
Sep 20041043.245.28$43
Aug 20043042.375.55$127
Jul 20043038.286.08$115
Jun 20044036.106.43$144
May 20044037.486.49$150
Apr 20048034.475.86$276
Mar 200423034.365.53$790
Feb 20042032.455.51$65
Jan 20041032.036.30$32
Dec 20033030.266.30$91
Nov 20034028.804.60$115
Oct 20034028.174.76$113
Sep 20033026.314.75$79
Aug 20034029.765.13$119
Jul 20032029.415.17$59
Jun 20034028.565.98$114
May 20034026.595.97$106
Apr 20034026.675.41$107
Mar 20034031.146.10$125
Feb 20033033.487.93$100
Jan 20033030.315.58$91
Dec 20024026.914.85$108
Nov 20022024.664.14$49
Oct 20023026.464.23$79
Sep 20023027.443.64$82
Aug 20023025.963.16$78
Jul 20023024.583.06$74
Jun 20024023.733.34$95
May 20023024.663.58$74
Apr 20024023.653.51$95
Mar 20027022.003.10$154
Feb 20029018.222.38$164
Jan 200214017.172.38$240
Dec 200116016.932.36$271
Nov 200119018.072.41$343
Oct 200119019.782.53$376
Sep 200135024.262.25$849
Aug 200125024.873.05$622
Jul 200122023.933.20$526
Jun 200110024.563.82$246
May 200111025.524.31$281
Apr 200113024.685.34$321
Mar 200123024.545.38$564
Feb 200117027.755.77$472
Jan 200122027.478.40$604
Dec 200023026.889.12$618
Nov 200022032.215.66$709
Oct 200021031.235.15$656
Sep 200018031.875.19$574
Aug 200018029.644.54$534
Jul 200010028.534.09$285
Jun 200019029.304.40$557
May 200018027.263.68$491
Apr 200018024.513.12$441
Mar 200020028.422.86$568
Feb 200018027.622.73$497
Jan 200019025.272.48$480
Dec 199918024.282.42$437
Nov 199911023.192.43$255
Oct 199910020.982.80$210
Sep 19999021.752.62$196
Aug 199928019.262.88$539
Jul 199921017.892.37$376
Jun 199911015.942.36$175
May 199910015.792.32$158
Apr 19999015.102.21$136
Mar 199913012.471.84$162
Feb 19991309.981.82$130
Jan 199912010.381.90$125
Dec 19981409.201.77$129
Nov 199812010.892.19$131
Oct 19988012.421.97$99
Sep 199810012.592.08$126
Aug 19984011.301.91$45
Jul 19984011.742.24$47
Jun 19987011.242.24$79
May 19989012.622.21$114
Apr 199814013.042.51$183
Mar 19987012.802.31$90
Feb 19984013.952.30$56
Jan 199812014.702.15$176
Dec 199712016.322.41$196
Nov 199715018.193.09$273
Oct 199715019.253.15$289
Sep 199715017.742.95$266
Aug 19973017.862.55$54
Jul 19974017.582.25$70
Jun 19977017.242.26$121
May 199727018.972.31$512
Apr 199726017.882.08$465
Mar 199729018.951.94$550
Feb 199718020.492.21$369
Jan 199718023.483.54$423
Dec 199645023.32$1,049
Nov 199655021.97$1,208
Oct 199659023.31$1,375
Sep 199651022.22$1,133
Aug 199650020.26$1,013
Jul 199625019.55$489
Jun 199627018.73$506
May 199614019.43$272
Apr 199626021.51$559
Mar 199666019.38$1,279
Feb 199656016.98$951
Jan 199663017.07$1,075
Dec 199556017.19$963
Nov 199572016.00$1,152
Oct 1995142015.43$2,191
Sep 199567016.18$1,084
Aug 199564015.92$1,019
Jul 199550015.24$762
Jun 199558016.41$952
May 19950017.56$0
Apr 1995102017.73$1,808
Mar 199547016.44$773
Feb 199549016.58$812
Jan 199538015.92$605
Dec 199451015.03$767
Nov 1994170015.90$2,703
Oct 19940015.58$0
Sep 1994105115.29$1,605
Aug 199447116.13$758
Jul 199429117.56$509
Jun 199432117.09$547
May 199442115.88$667
Apr 199439014.14$551
Mar 199465112.46$810
Feb 19943112.50$38
Jan 199412112.66$152
Dec 199338112.33$469
Nov 199317114.49$246
Oct 19930115.85$0
Sep 199392115.03$1,383
Aug 19930115.66$0
Jul 19932115.46$31
Jun 1993154116.79$2,586
May 19930117.68$0
Apr 19930118.05$0
Mar 19930118.14$0
Feb 19930117.90$0
Jan 1993159116.93$2,692

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 2018 — as filed, then multipliedworked
Oil                    4 bbl  × $ 65.38 =       $262
Casinghead gas         0 Mcf  × $  2.90 =         $0

────────────────────────────────────────────────────
Month total                                     $262

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/11987 is the state's own key, not one this site invented.