UNIVERSITY -24-

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 6408District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$435 k
Jan 1993 – Sep 1999
Value, last 12 filed months
$14 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
OilDisposition23,779 bbl$390,219
Casinghead gasProduction61,271 Mcf$44,862
Total$435,081

42,278 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, -101.6099. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

31.30986, -101.60986 · 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
100.0%
4 of 4 wells
Median depth
7,795 ft
4 wells filed one
Completion to plug
38.2 years
median over 4 wells

What the state filed about each well

On the RRC proration schedule
4100.0%
A plug date is filed
4100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
4100.0%
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 7,790 and 7,800 ft, median 7,795 ft, over the 4 wells that filed a depth.

Completions filed
Mar 1974 – Jan 1975
4 of 4 wells
Plug dates filed
Sep 2007 – Apr 2022
4 of 4 wells

Last completion to plug: a median of 38.2 years across the 4 wells that filed both dates, with the middle half between 34.9 years and 42.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-3833048537,800 ftJan 1975May 2010Yes
42-3833050247,800 ftJan 1975Apr 2022Yes
42-3833042727,790 ftMay 1974Apr 2015Yes
42-3833042617,790 ftMar 1974Sep 2007Yes

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 1999034215.102.21$755
Mar 1999035712.471.84$656
Feb 1999113609.981.82$764
Jan 1999037310.381.90$709
Dec 19982255839.201.77$3,104
Nov 199816966510.892.19$3,294
Oct 199827467612.421.97$4,734
Sep 199820863412.592.08$3,939
Aug 199826275911.301.91$4,408
Jul 199823276011.742.24$4,424
Jun 199823362411.242.24$4,015
May 199827643912.622.21$4,452
Apr 199827578813.042.51$5,560
Mar 199833376812.802.31$6,036
Feb 199827763313.952.30$5,320
Jan 199827265914.702.15$5,418
Dec 199727165216.322.41$5,995
Nov 199727989818.193.09$7,848
Oct 199727697919.253.15$8,397
Sep 199733192717.742.95$8,611
Aug 199721587117.862.55$6,065
Jul 199727289717.582.25$6,797
Jun 199721370017.242.26$5,252
May 199732675218.972.31$7,920
Apr 199722160317.882.08$5,207
Mar 199733280718.951.94$7,856
Feb 199730074720.492.21$7,795
Jan 199727674023.483.54$9,100
Dec 199637273523.32$8,675
Nov 199625967621.97$5,690
Oct 199625666923.31$5,967
Sep 199626268122.22$5,822
Aug 199631072420.26$6,281
Jul 199625571019.55$4,985
Jun 199631174818.73$5,825
May 199630060319.43$5,829
Apr 199626954521.51$5,786
Mar 199632259719.38$6,240
Feb 199631346716.98$5,315
Jan 199631265117.07$5,326
Dec 199527874517.19$4,779
Nov 199542787116.00$6,832
Oct 199549291315.43$7,592
Sep 199534483616.18$5,566
Aug 199541194815.92$6,543
Jul 199545392715.24$6,904
Jun 199534888516.41$5,711
May 199542086417.56$7,375
Apr 199542182517.73$7,464
Mar 199549694016.44$8,154
Feb 199535681916.58$5,902
Jan 199549186015.92$7,817
Dec 199449691515.03$7,455
Nov 199433197015.90$5,263
Oct 19944811,02315.58$7,494
Sep 19944201,10015.29$6,422
Aug 19943671,06516.13$5,920
Jul 19944231,05617.56$7,428
Jun 19943641,05517.09$6,221
May 199448282215.88$7,654
Apr 199440788514.14$5,755
Mar 199449190212.46$6,118
Feb 199441174012.50$5,138
Jan 199443489612.66$5,494
Dec 199352595512.33$6,473
Nov 199324176614.49$3,492
Oct 199324783915.85$3,915
Sep 199327791615.03$4,163
Aug 199322496015.66$3,508
Jul 199324893415.46$3,834
Jun 199326090916.79$4,365
May 199327892717.68$4,915
Apr 19933351,09318.05$6,047
Mar 19934481,52418.14$8,127
Feb 19933461,32817.90$6,193
Jan 19934051,45916.93$6,857

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/6408 is the state's own key, not one this site invented.