FEE "A"

Operated by FIRST ROCK, INC. (P-5 269028) in the MARCELINA CREEK (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13218District 01Field 57367500Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$226 k
Jan 1993 – Jun 1997
Value, last 12 filed months
$35 k
at the published price for each month
Months reported
54
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 164 leases and 198 wells, and the rule below applies to all of them.

Discovered
1980-10-09
as the register files it
Field class
Oil
the register's own label
Between wells
1,200 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 80 acres.

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: 80 ACRES OP. 3250 DIAG.

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
OilDisposition13,305 bbl$225,602
Casinghead gasProduction3,796 Mcf$55
Total$225,657

3,771 Mcf of this lease's gas, across 42 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 (1)

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 29.0060, -98.1781. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

29.00603, -98.17811 · 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%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
9,948 ft
1 wells filed one
Completion to plug
34.3 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
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

The one well that filed a depth was drilled to 9,948 ft.

Completions filed
Jun 1991
1 of 1 wells
Plug dates filed
Sep 2025
1 of 1 wells

Last completion to plug: a median of 34.3 years across the 1 well that filed both dates, with the middle half between 34.3 years and 34.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-4933228819,948 ftJun 1991Sep 2025Yes

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 (54)

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

54 months

Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 1997162017.882.08$2,897
Mar 19970018.951.94$0
Feb 199702520.492.21$55
Jan 1997166023.483.54$3,898
Dec 19961706723.32$3,964
Nov 19961736621.97$3,801
Oct 19961696323.31$3,939
Sep 19961706522.22$3,777
Aug 199632511420.26$6,585
Jul 199632610119.55$6,373
Jun 199602518.73$0
May 19961664719.43$3,225
Apr 19961627521.51$3,485
Mar 19961694519.38$3,275
Feb 19961265616.98$2,139
Jan 19963356217.07$5,718
Dec 199505717.19$0
Nov 19951566016.00$2,496
Oct 19951566015.43$2,407
Sep 1995161016.18$2,605
Aug 1995336015.92$5,349
Jul 1995173015.24$2,637
Jun 1995165016.41$2,708
May 1995172017.56$3,020
Apr 19951706717.73$3,014
Mar 19953337016.44$5,475
Feb 19956616916.58$10,959
Jan 199509615.92$0
Dec 19941637915.03$2,450
Nov 19941568415.90$2,480
Oct 19943209715.58$4,986
Sep 19943239115.29$4,939
Aug 19943386016.13$5,452
Jul 199447817717.56$8,394
Jun 19940017.09$0
May 199447312215.88$7,511
Apr 19943097314.14$4,369
Mar 199431711012.46$3,950
Feb 199411412.50$13
Jan 199421012.66$25
Dec 199346210312.33$5,696
Nov 199331310114.49$4,535
Oct 19933249915.85$5,135
Sep 199331710515.03$4,765
Aug 199331711315.66$4,964
Jul 199348012715.46$7,421
Jun 199347913416.79$8,042
May 199349514617.68$8,752
Apr 199366018618.05$11,913
Mar 199348815818.14$8,852
Feb 199349914817.90$8,932
Jan 199348916916.93$8,279

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.

Apr 1997 — as filed, then multipliedworked
Oil                  162 bbl  × $ 17.88 =     $2,897
Casinghead gas         0 Mcf  × $  2.08 =         $0

────────────────────────────────────────────────────
Month total                                   $2,897

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/13218 is the state's own key, not one this site invented.