UNIVERSITY "23"

Operated by TAMARACK PETROLEUM COMPANY, INC. (P-5 835630) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 6588District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$347 k
Jan 1993 – Sep 1999
Value, last 12 filed months
$13 k
at the published price for each month
Months reported
81
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 7,461 leases and 22,481 wells, and the rule below applies to all of them.

Discovered
1904-12-31
as the register files it
Field class
Oil and gas
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 80 acres. The field rule took effect on 2016-03-08.

The Commission's schedule remark for this field reads: AREA) 85279200.

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
OilDisposition18,969 bbl$309,272
Casinghead gasProduction54,766 Mcf$38,191
Total$347,462

38,373 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 (4)

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 31.3099, -101.6268. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

31.30991, -101.62679 · 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
100.0%
4 of 4 wells
With a plug date
50.0%
2 of 4 wells
Median depth
7,854 ft
4 wells filed one
Completion to plug
51.0 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
4100.0%
A plug date is filed
250.0%
BothOn the schedule and plugged. Neither fact cancels the other.
250.0%
NeitherNo plug date, and not on the schedule.
00.0%

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

Between 7,825 and 7,885 ft, median 7,854 ft, over the 4 wells that filed a depth.

Completions filed
Feb 1975 – Jan 2019
4 of 4 wells
Plug dates filed
Apr 2026
2 of 4 wells; 2 filed none

Last completion to plug: a median of 51.0 years across the 2 wells that filed both dates, with the middle half between 50.9 years and 51.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-3833056347,863 ftJan 2019Yes
42-3833056127,885 ftJan 2019Yes
42-3833056237,825 ftJun 1975Apr 2026Yes
42-3833055117,845 ftFeb 1975Apr 2026Yes

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 (81)

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

81 months

Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19991017.892.37$18
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 1999032115.102.21$709
Mar 1999033512.471.84$616
Feb 1999103399.981.82$716
Jan 1999035210.381.90$669
Dec 19981935489.201.77$2,747
Nov 199815364310.892.19$3,072
Oct 199824965412.421.97$4,380
Sep 199818961312.592.08$3,656
Aug 199823873411.301.91$4,089
Jul 199821173611.742.24$4,124
Jun 199821160411.242.24$3,723
May 199820437312.622.21$3,397
Apr 199820366613.042.51$4,316
Mar 199824664912.802.31$4,648
Feb 199820553613.952.30$4,092
Jan 199820155814.702.15$4,157
Dec 199720055216.322.41$4,595
Nov 199721062018.193.09$5,735
Oct 199720767419.253.15$6,108
Sep 199724663917.742.95$6,252
Aug 199716160117.862.55$4,411
Jul 199720561917.582.25$4,995
Jun 199714664817.242.26$3,980
May 199722469618.972.31$5,856
Apr 199715255917.882.08$3,882
Mar 199722874718.951.94$5,769
Feb 199720569220.492.21$5,727
Jan 199718968523.483.54$6,862
Dec 199626168123.32$6,087
Nov 199618463021.97$4,042
Oct 199618162323.31$4,219
Sep 199618563422.22$4,111
Aug 199622067420.26$4,457
Jul 199618166119.55$3,539
Jun 199622069618.73$4,121
May 199626060319.43$5,052
Apr 199623354521.51$5,012
Mar 199627959719.38$5,407
Feb 199627146716.98$4,602
Jan 199627065117.07$4,609
Dec 199524174517.19$4,143
Nov 199530683016.00$4,896
Oct 199535287015.43$5,431
Sep 199524679716.18$3,980
Aug 199529490315.92$4,680
Jul 199532488415.24$4,938
Jun 199524984416.41$4,086
May 199530182417.56$5,286
Apr 199530178617.73$5,337
Mar 199535589616.44$5,836
Feb 199525478116.58$4,211
Jan 199535981915.92$5,715
Dec 199435587215.03$5,336
Nov 199425897015.90$4,102
Oct 19943741,02315.58$5,827
Sep 19943281,10115.29$5,015
Aug 19942861,06616.13$4,613
Jul 19943301,05717.56$5,795
Jun 19942841,05617.09$4,854
May 199434878415.88$5,526
Apr 199429484414.14$4,157
Mar 199435486012.46$4,411
Feb 199429470012.50$3,675
Jan 199432985912.66$4,165
Dec 199336988712.33$4,550
Nov 199333770514.49$4,883
Oct 199335079315.85$5,548
Sep 199339687215.03$5,952
Aug 199331790615.66$4,964
Jul 199335790715.46$5,519
Jun 199337586716.79$6,296
May 199339588217.68$6,984
Apr 199323060818.05$4,152
Mar 199330784518.14$5,569
Feb 199321968217.90$3,920
Jan 199326978616.93$4,554

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.

Jul 1999 — as filed, then multipliedworked
Oil                    1 bbl  × $ 17.89 =        $18
Casinghead gas         0 Mcf  × $  2.37 =         $0

────────────────────────────────────────────────────
Month total                                      $18

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/6588 is the state's own key, not one this site invented.