DORA ROBERTS RANCH UNIT

Operated by OXY USA INC. (P-5 630591) in the VIREY (PENNSYLVANIAN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 15873District 08Field 93958500NGPA filingOilCasinghead gasSaveExport
Value, all time
$398 k
Jan 1993 – Sep 1996
Value, last 12 filed months
$0
at the published price for each month
Months reported
45
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 leases and 32 wells, and the rule below applies to all of them.

Discovered
1953-12-18
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

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

The Commission's schedule remark for this field reads: “ NET GOR RULE 2MMCF”

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA2none——

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition25,170 bbl$397,838
Casinghead gasProduction678,121 Mcf$0
Total$397,838

678,121 Mcf of this lease's gas, across 33 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 (22)

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 31.7807, -102.2501. A lease has no coordinate of its own — that point is the mean of its wells, and they span 2.8 miles.

31.77934, -102.25096 · 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%
22 of 22 wells
With a plug date
36.4%
8 of 22 wells
Median depth
13,201 ft
22 wells filed one
Completion to plug
18.0 years
median over 5 wells

What the state filed about each well

On the RRC proration schedule
22100.0%
A plug date is filed
836.4%
BothOn the schedule and plugged. Neither fact cancels the other.
836.4%
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, 22 of 22 wells. Median 13,201 ft, with the middle half between 12,397 and 13,267 ft; the shallowest is 10,274 ft and the deepest 13,327 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, 16 of 22 wells, May 1984 – Dec 2024. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
May 1984 – Dec 2024
16 of 22 wells; 6 filed none
Plug dates filed
Aug 1989 – May 2024
8 of 22 wells; 14 filed none

Last completion to plug: a median of 18.0 years across the 5 wells that filed both dates, with the middle half between 3.8 years and 27.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

22 wells

42-32900193210413,308 ft——Yes
42-329003941614 C13,169 ft—Nov 2003Yes
42-329004221512 C10,274 ft—May 2024Yes
42-329004312105 C13,217 ft——Yes
42-329004381609 C13,157 ft—Feb 2013Yes
42-32902043160513,230 ft——Yes
42-329004232103 C13,270 ftDec 2024—Yes
42-329004031005 C13,128 ftJun 2020—Yes
42-32900386151413,292 ftDec 2019Nov 2022Yes
42-32900192220513,300 ftDec 2016—Yes
42-329020472101 C13,294 ftMay 2012—Yes
42-32900308170113,218 ftDec 2006—Yes
42-32900413100413,193 ftOct 2002—Yes
42-32931438280112,695 ftMar 1994—Yes
42-32900194160213,209 ftMay 1993—Yes
42-32900409200113,327 ftJan 1992—Yes
42-329020442201 C13,257 ftOct 1991Jul 2019Yes
42-3291003590612,297 ftJul 1991Jul 2009Yes
42-32900300100612,200 ftOct 1985Aug 1989Yes
42-32931397221310,750 ftOct 1984—Yes
42-32910032161212,265 ftOct 1984Mar 2020Yes
42-32931323210710,790 ftMay 1984—Yes

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.

Leases whose centres are nearest (205)

Ranked by the distance between lease centres, within 5 miles. A lease has no coordinate the state files — each centre is the mean of that lease's own wells, so this measures how far apart two centres are and not whether the two leases touch.

LeaseOperatorCentres apart
DORA ROBERTS RANCH UNITCONTINENTAL RESOURCES, INC.0.31 mi
DORA ROBERTS RANCH DEVONIAN UNITCONTINENTAL RESOURCES, INC.0.35 mi
DORA ROBERTS RANCH UNITCONTINENTAL RESOURCES, INC.0.71 mi
DORA ROBERTS RANCH UNITCONTINENTAL RESOURCES, INC.0.77 mi
DORA ROBERTS RANCH DEVONIAN UNITCONTINENTAL RESOURCES, INC.0.78 mi
DORA ROBERTS RANCH UNITCONTINENTAL RESOURCES, INC.0.84 mi
DORA ROBERTS RANCH UNITCONTINENTAL RESOURCES, INC.0.96 mi
DORA ROBERTS RANCH UNITOXY USA INC.1.24 mi
DORA ROBERTS RANCH UNITOXY USA INC.1.27 mi
DORA ROBERTS RANCH DEVONIAN UNITCONTINENTAL RESOURCES, INC.1.29 mi

The 10 nearest are listed. 205 leases in all have a centre within 5 miles of this one.

Operators who reported on those leases

Taken from the same 5-mile set above. This is who filed production, not who holds acreage — the state publishes no acreage register.

Every month this lease reported (45)

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

45 months

Sep 19960022.22—$0
Aug 19960020.26—$0
Jul 19960019.55—$0
Jun 19960018.73—$0
May 19960019.43—$0
Apr 19960021.51—$0
Mar 19960019.38—$0
Feb 19960016.98—$0
Jan 19960017.07—$0
Dec 19950017.19—$0
Nov 19950016.00—$0
Oct 19950015.43—$0
Sep 19951,43019,61016.18—$23,137
Aug 19951,09521,61415.92—$17,432
Jul 199570415,57915.24—$10,729
Jun 199572712,92016.41—$11,930
May 199597515,75217.56—$17,121
Apr 199593714,33017.73—$16,613
Mar 19951,03416,63816.44—$16,999
Feb 199590514,15916.58—$15,005
Jan 19951,03217,21315.92—$16,429
Dec 19941,16618,61715.03—$17,525
Nov 19941,40020,91215.90—$22,260
Oct 199493816,37715.58—$14,614
Sep 199463118,51615.29—$9,648
Aug 199465218,97316.13—$10,517
Jul 199468011,25417.56—$11,941
Jun 199444712,58517.09—$7,639
May 199443815,38115.88—$6,955
Apr 199436315,32514.14—$5,133
Mar 199478322,75712.46—$9,756
Feb 199455929,21612.50—$6,988
Jan 199474426,82612.66—$9,419
Dec 199356626,75212.33—$6,979
Nov 199384023,29014.49—$12,172
Oct 199393229,14915.85—$14,772
Sep 199379935,09815.03—$12,009
Aug 19931,06428,34615.66—$16,662
Jul 199348024,29915.46—$7,421
Jun 199344525,11916.79—$7,472
May 199334416,25917.68—$6,082
Apr 199366325,50918.05—$11,967
Mar 199347726,43218.14—$8,653
Feb 199329225,75217.90—$5,227
Jan 199362817,56216.93—$10,632

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.

Sep 1995 — as filed, then multipliedworked
Oil                1,430 bbl  × $ 16.18 =    $23,137
Casinghead gas    19,610 Mcf  ×  no price            —

────────────────────────────────────────────────────
Month total                                  $23,137

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. 08/O/15873 is the state's own key, not one this site invented.