UNIVERSITY SAN ANDRES UNIT

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 36661District 08Field 82570500Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$51.5 M
Aug 2001 – May 2026
Value, last 12 filed months
$553 k
at the published price for each month
Months reported
298
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
OilDisposition743,125 bbl$49,460,144
Casinghead gasProduction422,486 Mcf$2,086,775
Total$51,546,919

Wells on this lease (41)

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 32.3841, -102.7151. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.9 miles.

32.38352, -102.71745 · 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
29.3%
12 of 41 wells
With a plug date
29.3%
12 of 41 wells
Median depth
4,765 ft
36 wells filed one
Completion to plug
23.4 years
median over 9 wells

What the state filed about each well

On the RRC proration schedule
1229.3%
A plug date is filed
1229.3%
BothOn the schedule and plugged. Neither fact cancels the other.
1229.3%
NeitherNo plug date, and not on the schedule.
2970.7%

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

Total depth in feet, 36 of 41 wells. Median 4,765 ft, with the middle half between 4,680 and 4,800 ft; the shallowest is 4,617 ft and the deepest 11,933 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 33 of 41 wells, Feb 1959 – Jul 2008. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Feb 1959 – Jul 2008
33 of 41 wells; 8 filed none
Plug dates filed
Jun 2002 – Jun 2025
12 of 41 wells; 29 filed none

Last completion to plug: a median of 23.4 years across the 9 wells that filed both dates, with the middle half between 20.4 years and 28.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

41 wells

42-00310466304,642 ftNov 2020Yes
42-00310728454,750 ftFeb 2010Yes
42-00310891104,700 ftJul 2002Yes
42-0031071644
42-0031072341
42-0031077715
42-0031092218
42-003109234
42-00305376111,933 ftJul 2008
42-00305461359,945 ftJul 2008
42-00310889254,680 ftNov 2007
42-00338864264,800 ftAug 2002
42-00338858114,800 ftJul 2002Aug 2019Yes
42-00310910384,680 ftApr 2002
42-0033885912W4,795 ftFeb 2002
42-0033886013W4,790 ftFeb 2002
42-0033886834W4,800 ftJan 2002
42-0033886733W4,800 ftJan 2002
42-0033886628W4,785 ftJan 2002
42-00310786244,750 ftNov 2001
42-00310865144,750 ftNov 2001
42-0033886527W4,800 ftNov 2001
42-0033720118W4,800 ftNov 2001Oct 2024Yes
42-0031092524,650 ftNov 2001
42-0031087694,660 ftOct 2001
42-00310907364,680 ftOct 2001
42-00310911324,680 ftOct 2001Nov 2020Yes
42-00310855224,750 ftOct 2001
42-0033889123A4,780 ftOct 2001
42-00310908294,678 ftOct 2001
42-0033886984,757 ftOct 2001
42-0033886119W4,777 ftOct 2001Mar 2025Yes
42-0033886220W4,773 ftOct 2001Mar 2022Yes
42-0033886321W4,790 ftOct 2001
42-00310505377,108 ftAug 2001Jun 2025Yes
42-0033720254,775 ftJun 1993
42-00310890314,617 ftSep 1986Dec 2019Yes
42-00310783164,750 ftAug 1986
42-00310740424,750 ftJun 1986
42-00310888174,676 ftMar 1974Jun 2002Yes
42-0030537814D9,923 ftFeb 1959Oct 2022Yes

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 (298)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

298 months

May 20265050106.413.05$53,737
Apr 2026533098.932.87$52,730
Mar 2026520089.753.15$46,670
Feb 2026704063.503.75$44,704
Jan 2026524059.138.00$30,984
Dec 202552715756.664.41$30,553
Nov 2025701058.593.93$41,072
Oct 2025713059.383.30$42,338
Sep 2025709062.743.08$44,483
Aug 2025709063.933.01$45,326
Jul 20251,090066.743.32$72,747
Jun 2025720066.483.13$47,866
May 2025529060.553.23$32,031
Apr 20251,239062.363.54$77,264
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 2025179074.324.28$13,303
Dec 20241,040068.993.12$71,750
Nov 2024535069.052.20$36,942
Oct 2024903071.372.28$64,447
Sep 202490910669.612.36$63,526
Aug 20241,0829675.632.06$82,030
Jul 20241,0819879.932.15$86,615
Jun 20241,2064078.082.63$94,270
May 20245843678.812.20$46,104
Apr 2024350584.451.66$29,566
Mar 20245684180.301.55$45,674
Feb 202438213776.091.78$29,311
Jan 202434021073.023.30$25,519
Dec 202353326971.262.61$38,684
Nov 202335630577.892.81$28,585
Oct 202354530885.443.09$47,516
Sep 202355018189.042.74$49,467
Aug 2023712080.522.67$57,330
Jul 2023356074.852.64$26,647
Jun 202370520268.962.26$49,073
May 202335335870.622.23$25,726
Apr 202350839078.122.24$40,558
Mar 202350940072.852.39$38,038
Feb 202367935775.112.47$51,880
Jan 202351953176.533.39$41,518
Dec 202251840376.415.73$41,889
Nov 202252044785.005.65$46,724
Oct 202267659087.185.86$62,393
Sep 202251254684.888.16$47,916
Aug 202268851494.529.13$69,721
Jul 2022681493101.587.54$72,894
Jun 2022722557115.097.98$87,538
May 2022890578109.378.43$102,214
Apr 20221,198475104.226.84$128,103
Mar 2022529451108.885.08$59,887
Feb 202268834691.054.86$64,324
Jan 202286848681.844.54$73,242
Dec 202153761971.323.90$40,712
Nov 202169955877.435.24$57,046
Oct 202190455779.795.71$75,313
Sep 202152048869.865.35$38,938
Aug 202191755866.024.22$62,895
Jul 202187373870.783.98$64,730
Jun 202171358969.493.38$51,538
May 202167266863.483.02$44,674
Apr 20211,18689260.362.76$74,047
Mar 20211,35158861.302.72$84,414
Feb 202168334857.805.55$41,408
Jan 20211,02868250.412.81$53,738
Dec 20205194,42744.642.68$35,012
Nov 20201,52180438.772.71$61,145
Oct 20201,03093536.972.48$40,396
Sep 20209781,01437.091.99$38,293
Aug 202099182539.982.39$41,588
Jul 202081089138.371.83$32,706
Jun 202081589334.901.69$29,953
May 202098590916.921.81$18,316
Apr 202082974314.751.80$13,568
Mar 20201,39262930.341.86$43,401
Feb 20201,08323349.881.98$54,482
Jan 20201,37265057.252.09$79,909
Dec 20192,70160659.012.30$160,782
Nov 20191,65564155.302.75$93,285
Oct 20192,54393753.472.42$138,240
Sep 20191,03450255.052.66$58,256
Aug 201987050953.112.30$47,379
Jul 201977241556.272.46$44,461
Jun 201956332352.782.49$30,520
May 201956134358.482.74$33,747
Apr 201997236662.632.75$61,883
Mar 20191,05245056.803.06$61,132
Feb 20191,12434050.852.79$58,105
Jan 20191,38358046.033.23$65,532
Dec 201877044046.594.19$37,716
Nov 201854930052.934.24$30,330
Oct 20181,1761,00461.443.40$75,665
Sep 201858669359.543.11$37,044
Aug 20181,12371159.403.07$68,887
Jul 201885277565.142.93$57,771
Jun 201889582960.183.08$56,412
May 20181,19267965.382.90$79,903
Apr 20181,00045963.842.90$65,171
Mar 20181,72161261.222.79$107,065
Feb 20181,45761561.782.77$91,715
Jan 20181,37153162.874.01$88,324
Dec 20171,27575857.272.92$75,234
Nov 201793066055.423.12$53,599
Oct 20171,08097149.292.98$56,130
Sep 20171,1922,04147.523.09$62,945
Aug 20171,25885045.373.00$59,629
Jul 20171,72075043.873.09$77,772
Jun 20179801,19342.493.09$45,323
May 20171,8161,41045.373.26$86,993
Apr 20171,4202,50547.933.21$76,106
Mar 20172,0271,42846.772.98$99,063
Feb 20171,6661,38650.452.95$88,142
Jan 20172,0631,54449.413.42$107,211
Dec 20161,6442,94948.763.72$91,140
Nov 20161,8801,20642.492.64$83,070
Oct 20162,2101,46846.193.09$106,616
Sep 20162,1002,55141.553.10$95,165
Aug 20161,5522,29441.442.92$71,023
Jul 20161,8761,60841.622.92$82,781
Jun 20161,9121,88745.352.69$91,777
May 20161,7881,43942.521.99$78,891
Apr 20162,0701,29836.561.99$78,264
Mar 20162,7701,57933.011.79$94,270
Feb 20162,5091,12926.472.06$68,743
Jan 20162,3791,39127.352.36$68,354
Dec 20151,5952,56132.362.00$56,740
Nov 20151,9111,25038.792.17$76,837
Oct 20152,4471,20243.552.43$109,484
Sep 20152,2121,12742.992.76$98,203
Aug 20152,3191,60940.162.87$97,753
Jul 20152,4061,66648.152.95$120,755
Jun 20152,1402,21156.152.88$126,535
May 20152,4351,68455.212.96$139,413
Apr 20152,9631,00849.822.71$150,345
Mar 20153,1591,85442.892.93$140,930
Feb 20152,4681,84444.662.98$115,709
Jan 20153,0131,58243.433.10$135,760
Dec 20142,5871,60454.693.59$147,244
Nov 20142,7161,64270.464.25$198,351
Oct 20143,3981,98278.303.90$273,795
Sep 20141,7651,75886.164.05$159,184
Aug 20143,1262,09089.394.04$287,867
Jul 20143,1111,78296.564.18$307,846
Jun 20142,9001,09898.164.74$289,865
May 20142,6541,58094.734.73$258,881
Apr 20142,92671195.944.81$284,140
Mar 20143,3202,02595.895.06$328,595
Feb 20142,5731,36397.406.19$259,050
Jan 20143,2791,84490.404.86$305,385
Dec 20132,8861,64191.824.35$272,138
Nov 20133,0201,61488.853.74$274,361
Oct 20132,9851,59497.423.78$296,823
Sep 20133,0921,620104.113.72$327,931
Aug 20132,9791,718104.253.52$316,613
Jul 20133,3931,871102.523.72$354,806
Jun 20132,97992294.403.93$284,844
May 20133,091094.834.15$293,120
Apr 20133,23088493.964.28$307,277
Mar 20133,1381,80193.623.91$300,827
Feb 20133,0051,43291.233.42$279,043
Jan 20133,3111,35291.603.42$307,911
Dec 20123,2861,94186.773.42$291,765
Nov 20123,3031,54086.953.62$292,778
Oct 20123,4191,50889.383.40$310,717
Sep 20123,5321,86994.672.92$339,829
Aug 20123,6181,28392.662.91$338,975
Jul 20123,7612,21685.133.02$326,868
Jun 20123,1402,01479.822.52$255,708
May 20123,5691,55691.612.49$330,828
Apr 20123,1571,991101.652.00$324,885
Mar 20123,7561,964105.052.22$398,932
Feb 20123,3741,873101.102.57$345,925
Jan 20123,8192,21798.092.73$380,667
Dec 20113,7212,20496.873.24$367,594
Nov 20113,8572,32895.723.31$376,901
Oct 20113,8532,11484.983.65$335,141
Sep 20113,98936883.623.99$335,027
Aug 20113,8031,23683.404.15$322,299
Jul 20113,8022,83594.144.52$370,727
Jun 20113,8582,88492.904.64$371,790
May 20114,0062,98198.134.40$406,240
Apr 20113,7972,533105.964.33$413,306
Mar 20114,3002,31596.364.06$423,741
Feb 20112,9352,24385.644.18$260,729
Jan 20113,9832,68986.504.59$356,869
Dec 20104,3322,76185.734.35$383,387
Nov 20103,7682,75680.843.80$315,065
Oct 20104,5452,85078.103.51$364,965
Sep 20103,9243,12372.633.98$297,428
Aug 20104,2753,18373.684.42$329,049
Jul 20104,3783,22572.554.74$332,899
Jun 20104,0243,13770.364.91$298,533
May 20104,5483,33471.124.24$337,574
Apr 20104,5463,05481.694.12$383,953
Mar 20104,8753,01578.394.39$395,383
Feb 20105,1272,72273.585.44$392,059
Jan 20104,6612,64774.365.96$362,379
Dec 20094,5513,01571.445.48$341,657
Nov 20094,5343,17574.593.75$350,102
Oct 20095,0031,45972.544.11$368,914
Sep 20095,5543,84565.543.06$375,793
Aug 20095,1564,09267.423.22$360,788
Jul 20095,3264,36461.133.46$340,697
Jun 20095,8564,10666.163.90$403,426
May 20094,7113,26554.743.93$270,698
Apr 20094,4302,94146.773.59$217,742
Mar 20095,6762,95242.144.06$251,169
Feb 20095,0482,84732.814.63$178,815
Jan 20095,6373,33935.865.37$220,077
Dec 20085,5713,60637.105.98$228,238
Nov 20086,0223,94555.496.86$361,225
Oct 20086,5534,11175.246.92$521,504
Sep 20087,2744,731101.767.88$777,469
Aug 20087,5344,668114.228.48$900,132
Jul 20087,5405,078131.0811.39$1,046,179
Jun 20088,5544,354131.3313.03$1,180,141
May 20087,7964,498123.1711.57$1,012,294
Apr 20085,8893,298110.3110.45$684,096
Mar 20084,6813,415101.909.66$509,997
Feb 20084,9913,03392.538.77$488,418
Jan 20085,0823,02690.388.21$484,142
Dec 20075,1723,33488.337.30$481,188
Nov 20074,9233,13291.677.29$474,129
Oct 20075,7843,64982.856.92$504,463
Sep 20077,0604,24175.846.24$561,912
Aug 20076,7013,50369.066.39$485,148
Jul 20076,3233,71870.906.39$472,051
Jun 20074,5442,65662.007.55$301,777
May 20075,5773,28558.747.85$353,368
Apr 20075,7903,11959.617.81$369,486
Mar 20075,7042,69056.927.30$344,314
Feb 20074,3832,04955.108.22$258,338
Jan 20073,2501,51250.306.73$173,646
Dec 20063,8302,15056.656.92$231,844
Nov 20063,3931,89754.207.62$198,351
Oct 20064,1691,64254.906.01$238,753
Sep 20062,40495760.085.04$149,253
Aug 20062,54394868.717.34$181,688
Jul 20062,30386369.376.34$165,233
Jun 20062,0071,05066.286.38$139,727
May 20062,2711,13866.016.42$157,220
Apr 20062,5151,15764.397.36$170,457
Mar 20062,4911,08356.707.08$148,911
Feb 20062,21391757.597.75$134,554
Jan 20062,3861,02460.598.93$153,715
Dec 20052,05886154.9413.42$124,617
Nov 20051,94567654.6910.59$113,530
Oct 20052,3281,03958.3413.80$150,149
Sep 20051,47364461.4512.08$98,295
Aug 20051,78991661.519.80$119,015
Jul 20052,2101,07455.697.84$131,499
Jun 20051,94776452.337.38$107,526
May 20052,1911,10545.226.65$106,427
Apr 20051,76068549.207.36$91,634
Mar 20052,1821,05550.377.15$117,456
Feb 20051,96090545.226.31$94,343
Jan 20051,63689743.166.32$76,281
Dec 20042,23490139.866.75$95,130
Nov 20042,1881,11145.286.33$106,106
Oct 20042,0651,14449.706.52$110,084
Sep 20042,2061,08443.245.28$101,115
Aug 20042,6291,25242.375.55$118,340
Jul 20042,1481,22838.286.08$89,697
Jun 20042,2321,22336.106.43$88,443
May 20042,2831,02837.486.49$92,243
Apr 20042,4711,19334.475.86$92,165
Mar 20042,5971,15634.365.53$95,626
Feb 20042,0711,05932.455.51$73,039
Jan 20042,40899432.036.30$83,390
Dec 20032,2101,06730.266.30$73,598
Nov 20032,3191,00428.804.60$71,401
Oct 20032,42899428.174.76$73,128
Sep 20032,19389126.314.75$61,930
Aug 20032,3901,03929.765.13$76,456
Jul 20032,3651,18329.415.17$75,672
Jun 20032,6021,23028.565.98$81,672
May 20032,7941,30426.595.97$82,081
Apr 20032,9381,28126.675.41$85,283
Mar 20033,1491,37731.146.10$106,454
Feb 20032,6111,21533.487.93$97,046
Jan 20033,0321,41130.315.58$99,776
Dec 20023,5471,30626.914.85$101,789
Nov 20022,9491,11324.664.14$77,327
Oct 20023,5891,32626.464.23$100,573
Sep 20023,2651,37427.443.64$94,586
Aug 20023,3251,71425.963.16$91,740
Jul 20023,7981,92124.583.06$99,236
Jun 20023,9501,96323.733.34$100,286
May 20024,9212,02024.663.58$128,592
Apr 20024,2111,70523.653.51$105,579
Mar 20023,3631,72022.003.10$79,323
Feb 20023,2601,22218.222.38$62,300
Jan 20023,6471,37617.172.38$65,888
Dec 20014,6891,96916.932.36$84,040
Nov 20014,1821,80118.072.41$79,901
Oct 20011,46386719.782.53$31,131
Sep 20011,51391824.262.25$38,772
Aug 20011,38996324.873.05$37,485

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                  505 bbl  × $106.41 =    $53,737
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $53,737

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/36661 is the state's own key, not one this site invented.