LINCOLN, Z. O. "A"

Operated by TEXACO E & P INC. (P-5 844118) in the SLAUGHTER field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 19770District 8AField 83991001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$825 k
Jan 1993 – Mar 1994
Value, last 12 filed months
$586 k
at the published price for each month
Months reported
15
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 160 leases and 6,532 wells, and the rule below applies to all of them.

Discovered
1937-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
880 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 17 acres. The field rule took effect on 1993-02-02.

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: UNITS MAY BE 17.7 AC. OR UP TO 35.4 AC.

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
OilDisposition49,878 bbl$824,724
Casinghead gasProduction15,277 Mcf$0
Total$824,724

15,277 Mcf of this lease's gas, across 11 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 33.4691, -102.5108. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

33.46913, -102.51085 · 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
10.0%
1 of 10 wells
With a plug date
10.0%
1 of 10 wells
Median depth
5,035 ft
9 wells filed one
Completion to plug
7.4 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
110.0%
A plug date is filed
110.0%
BothOn the schedule and plugged. Neither fact cancels the other.
110.0%
NeitherNo plug date, and not on the schedule.
990.0%

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, 9 of 10 wells. Median 5,035 ft, with the middle half between 5,029 and 5,039 ft; the shallowest is 203 ft and the deepest 5,042 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, 9 of 10 wells, Jan 1967 – Oct 2025. 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 1967 – Oct 2025
9 of 10 wells; 1 filed none
Plug dates filed
Aug 2003
1 of 10 wells; 9 filed none

Last completion to plug: a median of 7.4 years across the 1 well that filed both dates, with the middle half between 7.4 years and 7.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-219303059
42-219018853W5,040 ftOct 2025
42-2190255155,042 ftOct 2024
42-219025461W5,035 ftSep 2024
42-2190188865,039 ftApr 2019
42-2190188425,029 ftMar 1996Aug 2003Yes
42-2190188975,003 ftFeb 1987
42-2190188645,038 ftOct 1986
42-21930378105,030 ftNov 1985
42-219201708WS203 ftJan 1967

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 (15)

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

15 months

Mar 19940012.46$0
Feb 19940012.50$0
Jan 19940012.66$0
Dec 19930012.33$0
Nov 19934,6721,17514.49$67,697
Oct 19934,6171,36815.85$73,179
Sep 19934,3341,35415.03$65,140
Aug 19934,6011,55615.66$72,052
Jul 19934,5771,59415.46$70,760
Jun 19934,5061,48516.79$75,656
May 19934,4321,39617.68$78,358
Apr 19934,5981,30518.05$82,994
Mar 19934,5451,30518.14$82,446
Feb 19934,2671,28517.90$76,379
Jan 19934,7291,45416.93$80,062

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.

Nov 1993 — as filed, then multipliedworked
Oil                4,672 bbl  × $ 14.49 =    $67,697
Casinghead gas     1,175 Mcf  ×  no price            —

────────────────────────────────────────────────────
Month total                                  $67,697

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. 8A/O/19770 is the state's own key, not one this site invented.