LASATER, M.L.

Operated by BLUESTAR ENERGY, INC. (P-5 76847) in the PEARSALL (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12381District 01Field 69981125OilCasinghead gasSaveExport
Value, all time
$3.3 M
Jan 1993 – Oct 2000
Value, last 12 filed months
$1 k
at the published price for each month
Months reported
94
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 1,992 leases and 3,388 wells, and the rule below applies to all of them.

Discovered
1936-12-28
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 2025-06-17.

The Commission's schedule remark for this field reads: LEASE PLAT. PRORATION PLAT IS NOT REQUIRED.

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
OilDisposition200,963 bbl$3,304,367
Casinghead gasProduction612,791 Mcf$4,359
Total$3,308,726

611,092 Mcf of this lease's gas, across 41 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 (10)

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 28.6566, -99.4790. A lease has no coordinate of its own — that point is the mean of its wells, and they span 3.8 miles.

28.65679, -99.47876 · 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%
10 of 10 wells
With a plug date
70.0%
7 of 10 wells
Median depth
9,487 ft
10 wells filed one
Completion to plug
10.1 years
median over 7 wells

What the state filed about each well

On the RRC proration schedule
10100.0%
A plug date is filed
770.0%
BothOn the schedule and plugged. Neither fact cancels the other.
770.0%
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

Total depth in feet, 10 of 10 wells. Median 9,487 ft, with the middle half between 9,177 and 10,129 ft; the shallowest is 8,243 ft and the deepest 10,748 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, 10 of 10 wells, Jan 1990 – Mar 1997. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jan 1990 – Mar 1997
10 of 10 wells
Plug dates filed
Jan 2000 – Oct 2023
7 of 10 wells; 3 filed none

Last completion to plug: a median of 10.1 years across the 7 wells that filed both dates, with the middle half between 8.8 years and 13.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-50730928128,243 ftMar 1997Oct 2023Yes
42-5073095599,164 ftSep 1996Jan 2014Yes
42-5073227039,711 ftJul 1996Yes
42-50730422118,485 ftMay 1996Yes
42-507324371010,748 ftMar 1996Yes
42-5073245069,215 ftSep 1992Feb 2000Yes
42-50732416810,268 ftJul 1991Jan 2000Yes
42-50732402710,433 ftMar 1991Feb 2000Yes
42-1273284149,491 ftMar 1990Apr 2000Yes
42-5073227359,483 ftJan 1990Feb 2000Yes

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 (94)

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

94 months

Oct 20000031.235.15$0
Sep 20000031.875.19$0
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 200038027.622.73$1,050
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 199859012.622.21$745
Apr 199899013.042.51$1,291
Mar 1998559012.802.31$7,155
Feb 1998339013.952.30$4,729
Jan 1998486014.702.15$7,144
Dec 1997314016.322.41$5,124
Nov 1997664018.193.09$12,078
Oct 1997357019.253.15$6,872
Sep 1997526617.742.95$9,349
Aug 1997849017.862.55$15,163
Jul 19971,39512917.582.25$24,814
Jun 199748420717.242.26$8,811
May 19971,29922618.972.31$25,164
Apr 19971,49323517.882.08$27,184
Mar 199752514518.951.94$10,230
Feb 199728627520.492.21$6,467
Jan 199718047623.483.54$5,911
Dec 199634050123.32$7,929
Nov 199667150021.97$14,742
Oct 199651655223.31$12,028
Sep 199637765122.22$8,377
Aug 199649590920.26$10,029
Jul 199666161619.55$12,923
Jun 199665972818.73$12,343
May 199626221819.43$5,091
Apr 19961,49123421.51$32,071
Mar 19961,15625019.38$22,403
Feb 19960016.98$0
Jan 1996485017.07$8,279
Dec 1995164017.19$2,819
Nov 19950016.00$0
Oct 19950015.43$0
Sep 19953016.18$49
Aug 19953015.92$48
Jul 19957216,97215.24$10,988
Jun 19951,0367,18716.41$17,001
May 19951,6748,18417.56$29,395
Apr 19951,6138,41617.73$28,598
Mar 19952,4168,98816.44$39,719
Feb 19954,3148,95416.58$71,526
Jan 19952,2356,21115.92$35,581
Dec 19943,0977,04915.03$46,548
Nov 19941,8767,83215.90$29,828
Oct 19943,15011,27815.58$49,077
Sep 19944,25213,04015.29$65,013
Aug 19943,89116,63616.13$62,762
Jul 19945,09716,70117.56$89,503
Jun 19943,38618,64017.09$57,867
May 19945,40216,84515.88$85,784
Apr 19946,65715,95014.14$94,130
Mar 19942,98417,75812.46$37,181
Feb 19943,90118,16312.50$48,763
Jan 19944,77921,08412.66$60,502
Dec 19935,67720,01212.33$69,997
Nov 19936,06019,61614.49$87,809
Oct 19935,33524,61015.85$84,560
Sep 19937,64924,28715.03$114,964
Aug 19938,34829,09015.66$130,730
Jul 19938,10727,44315.46$125,334
Jun 19939,75133,09316.79$163,719
May 199310,53435,23617.68$186,241
Apr 199312,70236,07818.05$229,271
Mar 199314,06339,09818.14$255,103
Feb 199314,19940,61217.90$254,162
Jan 199318,82240,87016.93$318,656

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.

Feb 2000 — as filed, then multipliedworked
Oil                   38 bbl  × $ 27.62 =     $1,050
Casinghead gas         0 Mcf  × $  2.73 =         $0

────────────────────────────────────────────────────
Month total                                   $1,050

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. 01/O/12381 is the state's own key, not one this site invented.