BLACKBURN, LUCY "D"

Operated by EXXON CORP. (P-5 257097) in the TALCO field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 1650District 06Field 88207001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$109 k
Jan 1993 – Aug 1995
Value, last 12 filed months
$17 k
at the published price for each month
Months reported
32
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 229 leases and 1,675 wells, and the rule below applies to all of them.

Discovered
1936-03-16
as the register files it
Field class
Oil
the register's own label
Between wells
0 ft
minimum
From a lease line
233 ft
minimum

A drilling unit in this field needs at least 5 acres. The field rule took effect on 2012-11-06.

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: NON-CURRENT RESTR.REMOVED ALSO FOR API#(159-30200,30572)-HAGANSPOR

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
OilDisposition6,661 bbl$109,352
Casinghead gasProduction23 Mcf$0
Total$109,352

23 Mcf of this lease's gas, across 23 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 (5)

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 33.3474, -95.0446. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

33.34745, -95.04461 · 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%
5 of 5 wells
With a plug date
100.0%
5 of 5 wells
Median depth
4,330 ft
5 wells filed one
Completion to plug
22.8 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
5100.0%
A plug date is filed
5100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
5100.0%
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 4,300 and 4,431 ft, median 4,330 ft, over the 5 wells that filed a depth.

Completions filed
Jun 1972
1 of 5 wells; 4 filed none
Plug dates filed
Mar 1975 – Apr 1995
5 of 5 wells

Last completion to plug: a median of 22.8 years across the 1 well that filed both dates, with the middle half between 22.8 years and 22.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

5 wells

42-4490050614,306 ftOct 1993Yes
42-4490050724,330 ftApr 1995Yes
42-4490050834,300 ftApr 1995Yes
42-4498005344,431 ftMar 1975Yes
42-4493003554,410 ftJun 1972Apr 1995Yes

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 (32)

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

32 months

Aug 19950015.92$0
Jul 19950015.24$0
Jun 19950016.41$0
May 199510017.56$176
Apr 199562017.73$1,099
Mar 1995141016.44$2,318
Feb 1995135016.58$2,238
Jan 1995160015.92$2,547
Dec 1994163015.03$2,450
Nov 1994100115.90$1,590
Oct 1994158115.58$2,462
Sep 1994158115.29$2,416
Aug 1994102116.13$1,645
Jul 199494117.56$1,651
Jun 199476117.09$1,299
May 1994103115.88$1,636
Apr 1994107114.14$1,513
Mar 1994131112.46$1,632
Feb 1994134112.50$1,675
Jan 1994167112.66$2,114
Dec 1993170112.33$2,096
Nov 1993191114.49$2,768
Oct 1993250115.85$3,963
Sep 1993148115.03$2,224
Aug 1993211115.66$3,304
Jul 1993223115.46$3,448
Jun 1993418116.79$7,018
May 1993607117.68$10,732
Apr 1993589118.05$10,631
Mar 1993655118.14$11,882
Feb 1993560117.90$10,024
Jan 1993638116.93$10,801

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 1995 — as filed, then multipliedworked
Oil                   10 bbl  × $ 17.56 =       $176
Casinghead gas         0 Mcf  ×  no price            —

────────────────────────────────────────────────────
Month total                                     $176

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. 06/O/1650 is the state's own key, not one this site invented.