UNIVERSITY 18

Operated by MICHAELSON PRODUCING COMPANY (P-5 564150) in the FARMER (SAN ANDRES) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13171District 7CField 30243500Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$5.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$146 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 351 leases and 1,445 wells, and the rule below applies to all of them.

Discovered
1953-01-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
660 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 1997-12-16.

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: PER DOCKET 7C-0214566 ON 3/7/97.

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
OilDisposition144,293 bbl$5,339,390
Casinghead gasProduction133,588 Mcf$358,454
Total$5,697,844

49,559 Mcf of this lease's gas, across 48 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 (8)

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 31.0944, -101.3491. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

31.09530, -101.34892 · 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 8 wells
With a plug date
0.0%
0 of 8 wells
Median depth
2,665 ft
8 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.
8100.0%

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

Total depth in feet, 8 of 8 wells. Median 2,665 ft, with the middle half between 2,658 and 2,678 ft; the shallowest is 2,625 ft and the deepest 2,700 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, 8 of 8 wells, May 1978 – Oct 1994. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
May 1978 – Oct 1994
8 of 8 wells

8 wells

42-3833428572,660 ftOct 1994
42-3833426062,650 ftApr 1994
42-3833423552,660 ftOct 1993
42-3833421042,670 ftMay 1993
42-3833418832,670 ftJan 1993
42-3833416922,700 ftJul 1992
42-3833413812,700 ftDec 1991
42-3833122482,625 ftMay 1978

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 20262660106.413.05$28,305
Apr 2026131098.932.87$12,960
Mar 2026133089.753.15$11,937
Feb 2026265063.503.75$16,828
Jan 2026132059.138.00$7,805
Dec 2025130056.664.41$7,366
Nov 2025128058.593.93$7,500
Oct 2025259059.383.30$15,379
Sep 2025181062.743.08$11,356
Aug 2025128063.933.01$8,183
Jul 2025138066.743.32$9,210
Jun 2025133066.483.13$8,842
May 2025272060.553.23$16,470
Apr 2025133062.363.54$8,294
Mar 2025137067.704.27$9,275
Feb 2025138070.884.34$9,781
Jan 2025139074.324.28$10,330
Dec 2024276068.993.12$19,041
Nov 2024133069.052.20$9,184
Oct 2024134071.372.28$9,564
Sep 2024268069.612.36$18,655
Aug 2024132075.632.06$9,983
Jul 2024136079.932.15$10,870
Jun 2024131078.082.63$10,228
May 2024268078.812.20$21,121
Apr 2024133084.451.66$11,232
Mar 2024137080.301.55$11,001
Feb 2024275076.091.78$20,925
Jan 2024135073.023.30$9,858
Dec 2023139071.262.61$9,905
Nov 2023139077.892.81$10,827
Oct 2023270085.443.09$23,069
Sep 2023131089.042.74$11,664
Aug 2023133080.522.67$10,709
Jul 2023267074.852.64$19,985
Jun 2023135068.962.26$9,310
May 2023133070.622.23$9,392
Apr 2023135078.122.24$10,546
Mar 2023271072.852.39$19,742
Feb 2023137075.112.47$10,290
Jan 2023137076.533.39$10,485
Dec 2022272076.415.73$20,784
Nov 2022133085.005.65$11,305
Oct 2022135087.185.86$11,769
Sep 2022272084.888.16$23,087
Aug 2022136094.529.13$12,855
Jul 20221370101.587.54$13,916
Jun 20221340115.097.98$15,422
May 20221360109.378.43$14,874
Apr 202210104.226.84$104
Mar 20221360108.885.08$14,808
Feb 2022136091.054.86$12,383
Jan 2022139081.844.54$11,376
Dec 2021275071.323.90$19,613
Nov 2021130077.435.24$10,066
Oct 2021272079.795.71$21,703
Sep 2021137069.865.35$9,571
Aug 2021136066.024.22$8,979
Jul 2021135070.783.98$9,555
Jun 2021137069.493.38$9,520
May 2021274063.483.02$17,394
Apr 2021136060.362.76$8,209
Mar 2021139061.302.72$8,521
Feb 20211057.805.55$58
Jan 2021137050.412.81$6,906
Dec 2020133044.642.68$5,937
Nov 2020137038.772.71$5,311
Oct 2020134036.972.48$4,954
Sep 2020136037.091.99$5,044
Aug 2020132039.982.39$5,277
Jul 2020264038.371.83$10,130
Jun 2020134034.901.69$4,677
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020278030.341.86$8,435
Feb 20201049.881.98$50
Jan 2020138057.252.09$7,901
Dec 2019140059.012.30$8,261
Nov 2019138655.302.75$7,648
Oct 20192761853.472.42$14,801
Sep 20191383655.052.66$7,693
Aug 20191393653.112.30$7,465
Jul 201904956.272.46$121
Jun 201927716452.782.49$15,029
May 201913513358.482.74$8,259
Apr 201913911062.632.75$9,008
Mar 20191399456.803.06$8,183
Feb 20191389150.852.79$7,271
Jan 20191458846.033.23$6,958
Dec 201813810846.594.19$6,881
Nov 201814117752.934.24$8,213
Oct 201828419761.443.40$18,118
Sep 201814020059.543.11$8,957
Aug 201813717159.403.07$8,662
Jul 201827716765.142.93$18,533
Jun 20181377260.183.08$8,466
May 201813915265.382.90$9,529
Apr 201814011363.842.90$9,265
Mar 201813811961.222.79$8,780
Feb 20181399961.782.77$8,861
Jan 20182799462.874.01$17,918
Dec 201706057.272.92$175
Nov 201728613055.423.12$16,256
Oct 201714014349.292.98$7,327
Sep 201713616047.523.09$6,957
Aug 201714217445.373.00$6,965
Jul 201728117443.873.09$12,865
Jun 201714015342.493.09$6,421
May 201713913345.373.26$6,740
Apr 201714011947.933.21$7,092
Mar 201714012246.772.98$6,912
Feb 20171449250.452.95$7,536
Jan 20172829849.413.42$14,269
Dec 20161449948.763.72$7,390
Nov 201614110442.492.64$6,266
Oct 201614211946.193.09$6,927
Sep 201614340041.553.10$7,182
Aug 201628256441.442.92$13,335
Jul 201614057041.622.92$7,494
Jun 201614555645.352.69$8,069
May 201614554942.521.99$7,258
Apr 201627754936.561.99$11,220
Mar 201614257933.011.79$5,726
Feb 201614151526.472.06$4,795
Jan 201628554627.352.36$9,086
Dec 201514354032.362.00$5,708
Nov 201514451538.792.17$6,702
Oct 201528153143.552.43$13,526
Sep 201514324442.992.76$6,821
Aug 201514115840.162.87$6,116
Jul 201527917648.152.95$13,952
Jun 201514117356.152.88$8,416
May 201513816955.212.96$8,118
Apr 201514016949.822.71$7,432
Mar 201528217242.892.93$12,600
Feb 201514714944.662.98$7,008
Jan 201513415443.433.10$6,297
Dec 201414218154.693.59$8,416
Nov 201428421270.464.25$20,912
Oct 201414223078.303.90$12,016
Sep 201413820686.164.05$12,723
Aug 201427722789.394.04$25,677
Jul 201428720396.564.18$28,561
Jun 201414121198.164.74$14,840
May 201413921894.734.73$14,198
Apr 201414221295.944.81$14,643
Mar 201428621595.895.06$28,512
Feb 201414117397.406.19$14,805
Jan 201413920090.404.86$13,538
Dec 201315119291.824.35$14,701
Nov 201314316688.853.74$13,326
Oct 201328321497.423.78$28,379
Sep 2013141180104.113.72$15,349
Aug 2013140186104.253.52$15,250
Jul 2013286141102.523.72$29,845
Jun 201313918494.403.93$13,845
May 20131449294.834.15$14,037
Apr 20132877393.964.28$27,279
Mar 201314312593.623.91$13,877
Feb 20131413091.233.42$12,966
Jan 20132896291.603.42$26,684
Dec 20121489186.773.42$13,153
Nov 201214815586.953.62$13,430
Oct 201228119489.383.40$25,775
Sep 201214415494.672.92$14,082
Aug 201214418692.662.91$13,884
Jul 201228519885.133.02$24,860
Jun 201214521179.822.52$12,105
May 201227820591.612.49$25,978
Apr 2012147213101.652.00$15,368
Mar 2012293204105.052.22$31,233
Feb 2012151185101.102.57$15,742
Jan 20121419998.092.73$14,101
Dec 201114516696.873.24$14,584
Nov 201129518395.723.31$28,843
Oct 201114320484.983.65$12,896
Sep 201114518183.623.99$12,846
Aug 201127520283.404.15$23,773
Jul 201128420794.144.52$27,671
Jun 201114219892.904.64$14,111
May 201114219398.134.40$14,785
Apr 2011137160105.964.33$15,210
Mar 201127517196.364.06$27,193
Feb 201114715285.644.18$13,224
Jan 201128516186.504.59$25,391
Dec 201014515885.734.35$13,118
Nov 201028713180.843.80$23,698
Oct 201028114078.103.51$22,437
Sep 201013610372.633.98$10,288
Aug 201014010973.684.42$10,797
Jul 201028020872.554.74$21,299
Jun 201014519870.364.91$11,174
May 201028320971.124.24$21,012
Apr 201013920881.694.12$12,212
Mar 201029020878.394.39$23,646
Feb 201014618673.585.44$11,755
Jan 201028121674.365.96$22,183
Dec 200927322071.445.48$20,710
Nov 200927219674.593.75$21,024
Oct 200913622072.544.11$10,770
Sep 200928021465.543.06$19,007
Aug 200927923267.423.22$19,557
Jul 200927419561.133.46$17,425
Jun 200928022366.163.90$19,393
May 200928921554.743.93$16,664
Apr 200928520546.773.59$14,065
Mar 200913620142.144.06$6,547
Feb 200928217232.814.63$10,049
Jan 200928620135.865.37$11,336
Dec 200828019437.105.98$11,548
Nov 200827520855.496.86$16,687
Oct 200814420475.246.92$12,247
Sep 2008409264101.767.88$43,699
Aug 2008140285114.228.48$18,408
Jul 2008283292131.0811.39$40,421
Jun 2008281287131.3313.03$40,644
May 2008274294123.1711.57$37,151
Apr 2008278292110.3110.45$33,719
Mar 2008284299101.909.66$31,829
Feb 200814126092.538.77$15,327
Jan 200827723590.388.21$26,964
Dec 200727922488.337.30$26,280
Nov 200714020891.677.29$14,350
Oct 200728820482.856.92$25,273
Sep 200727621175.846.24$22,249
Aug 200728934769.066.39$22,175
Jul 200728833770.906.39$22,572
Jun 200728025962.007.55$19,315
May 200729036158.747.85$19,867
Apr 200728734959.617.81$19,832
Mar 200728635456.927.30$18,864
Feb 200729131055.108.22$18,581
Jan 200729726350.306.73$16,708
Dec 200629017456.656.92$17,632
Nov 20062874254.207.62$15,875
Oct 200628931454.906.01$17,754
Sep 200628134360.085.04$18,610
Aug 200627230468.717.34$20,920
Jul 200628234869.376.34$21,770
Jun 200629035066.286.38$21,456
May 200628835366.016.42$21,279
Apr 200629726964.397.36$21,104
Mar 200629035956.707.08$18,986
Feb 200628029457.597.75$18,404
Jan 200643648260.598.93$30,723
Dec 200514639054.9413.42$13,253
Nov 200543535254.6910.59$27,517
Oct 200529134658.3413.80$21,750
Sep 200528928961.4512.08$21,250
Aug 200529034361.519.80$21,198
Jul 200543132055.697.84$26,512
Jun 200528736752.337.38$17,728
May 200528234945.226.65$15,073
Apr 200527836549.207.36$16,364
Mar 200542334150.377.15$23,746
Feb 200530031245.226.31$15,535
Jan 200529930343.166.32$14,820
Dec 200440426239.866.75$17,872
Nov 200415633245.286.33$9,165
Oct 200444831949.706.52$24,344
Sep 200429431943.245.28$14,398
Aug 200428835142.375.55$14,151
Jul 200428833438.286.08$13,057
Jun 200428731036.106.43$12,355
May 200443733337.486.49$18,541
Apr 200429136734.475.86$12,181
Mar 200444039734.365.53$17,314
Feb 200428632532.455.51$11,071
Jan 200429037332.036.30$11,638
Dec 200329231830.266.30$10,840
Nov 200342534228.804.60$13,812
Oct 200328536128.174.76$9,747
Sep 200329230826.314.75$9,145
Aug 200328036029.765.13$10,180
Jul 200343136629.415.17$14,568
Jun 200328633728.565.98$10,184
May 200343135226.595.97$13,563
Apr 200343935126.675.41$13,606
Mar 200329110031.146.10$9,671
Feb 200343520733.487.93$16,204
Jan 200328435230.315.58$10,573
Dec 200242741526.914.85$13,505
Nov 200242538124.664.14$12,057
Oct 200228234626.464.23$8,925
Sep 200242441227.443.64$13,132
Aug 200242144525.963.16$12,337
Jul 200228344724.583.06$8,325
Jun 200240242523.733.34$10,958
May 200242643924.663.58$12,079
Apr 200242747223.653.51$11,756
Mar 200229051522.003.10$7,978
Feb 200243347218.222.38$9,011
Jan 200242854817.172.38$8,651
Dec 200141553716.932.36$8,296
Nov 200138847818.072.41$8,161
Oct 200138146419.782.53$8,710
Sep 200141545724.262.25$11,097
Aug 200141052924.873.05$11,812
Jul 200141246023.933.20$11,330
Jun 200140550324.563.82$11,870
May 200140143725.524.31$12,116
Apr 200140546724.685.34$12,487
Mar 200141047624.545.38$12,621
Feb 200138536327.755.77$12,777
Jan 200147738627.478.40$16,345
Dec 200046548126.889.12$16,887
Nov 200048060232.215.66$18,867
Oct 200047332831.235.15$16,460
Sep 200031639731.875.19$12,130
Aug 200046940929.644.54$15,758
Jul 200047055828.534.09$15,691
Jun 200047539429.304.40$15,650
May 200046158027.263.68$14,701
Apr 200046651924.513.12$13,039
Mar 200046653928.422.86$14,785
Feb 200046752927.622.73$14,341
Jan 200046753025.272.48$13,116
Dec 199946944024.282.42$12,454
Nov 199947651323.192.43$12,287
Oct 199963455520.982.80$14,857
Sep 199946851121.752.62$11,517
Aug 199946157719.262.88$10,538
Jul 199946054417.892.37$9,520
Jun 199946556415.942.36$8,744
May 199960751315.792.32$10,775
Apr 199930546415.102.21$5,630
Mar 199945542312.471.84$6,451
Feb 19994563639.981.82$5,211
Jan 199945844310.381.90$5,596
Dec 19986204449.201.77$6,491
Nov 199846250410.892.19$6,133
Oct 199830857812.421.97$4,964
Sep 199861755312.592.08$8,920
Aug 199845559211.301.91$6,271
Jul 199856354611.742.24$7,831
Jun 199850359611.242.24$6,987
May 199845560812.622.21$7,084
Apr 199860658513.042.51$9,368
Mar 199860158612.802.31$9,046
Feb 199845049413.952.30$7,413
Jan 199873753914.702.15$11,995
Dec 199758347216.322.41$10,653
Nov 199739350518.193.09$8,708
Oct 199765371519.253.15$14,822
Sep 199754745217.742.95$11,039
Aug 199769340417.862.55$13,409
Jul 199751459517.582.25$10,373
Jun 199768857417.242.26$13,157
May 199767178018.972.31$14,530
Apr 199751386017.882.08$10,964
Mar 199751374518.951.94$11,166
Feb 199768768220.492.21$15,581
Jan 199752461823.483.54$14,491
Dec 199668768423.32$16,021
Nov 19966911,00321.97$15,181
Oct 19966771,04223.31$15,781
Sep 199684763022.22$18,820
Aug 199667167520.26$13,594
Jul 19965981,05519.55$11,691
Jun 199671594118.73$13,392
May 19968821,26919.43$17,137
Apr 19965371,12321.51$11,551
Mar 199686285019.38$16,706
Feb 199676467316.98$12,973
Jan 199688282917.07$15,056
Dec 199571872017.19$12,342
Nov 199588878616.00$14,208
Oct 199587387315.43$13,470
Sep 19957151,23616.18$11,569
Aug 19951,0691,40615.92$17,018
Jul 19957031,33515.24$10,714
Jun 19951,0701,31616.41$17,559
May 19951,0681,42517.56$18,754
Apr 19958871,42117.73$15,727
Mar 19951,2371,31916.44$20,336
Feb 19958911,13516.58$14,773
Jan 19951,2391,22215.92$19,725
Dec 19941,4271,22215.03$21,448
Nov 19941,4461,13315.90$22,991
Oct 19941,0761,07115.58$16,764
Sep 19941,07881815.29$16,483
Aug 19941,05897616.13$17,066
Jul 19941,2321,05817.56$21,634
Jun 19941,2451,10817.09$21,277
May 19941,2471,19715.88$19,802
Apr 19941,25095814.14$17,675
Mar 19941,08078712.46$13,457
Feb 19941,06764612.50$13,338
Jan 19941,24897012.66$15,800
Dec 19931,4321,04012.33$17,657
Nov 19931,4221,06714.49$20,605
Oct 19931,4151,40615.85$22,428
Sep 19931,0631,12915.03$15,977
Aug 19931,5761,27215.66$24,680
Jul 19931,4011,43515.46$21,659
Jun 19931,5661,26816.79$26,293
May 19931,5821,28217.68$27,970
Apr 19931,23983618.05$22,364
Mar 19931,43169318.14$25,958
Feb 19931,22462417.90$21,910
Jan 19931,24659516.93$21,095

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                  266 bbl  × $106.41 =    $28,305
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $28,305

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. 7C/O/13171 is the state's own key, not one this site invented.