COFFMAN,D.E.

Operated by MARALO, LLC (P-5 525339) in the DEEP ROCK (PENN.) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 23020District 08Field 23907710Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$317 k
Jan 1993 – Feb 1999
Value, last 12 filed months
$6 k
at the published price for each month
Months reported
74
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 54 leases and 106 wells, and the rule below applies to all of them.

Discovered
1961-03-04
as the register files it
Field class
Oil
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 40 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: OPTIONAL 40 ACRE, DIAG. 2100

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
OilDisposition18,720 bbl$306,137
Casinghead gasProduction30,987 Mcf$11,184
Total$317,321

26,539 Mcf of this lease's gas, across 48 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 (2)

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 32.2893, -102.6455. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

32.28933, -102.64550 · 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%
2 of 2 wells
With a plug date
100.0%
2 of 2 wells
Median depth
10,875 ft
2 wells filed one
Completion to plug
16.3 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
2100.0%
A plug date is filed
2100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
2100.0%
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 9,350 and 12,400 ft, median 10,875 ft, over the 2 wells that filed a depth.

Completions filed
Dec 1982
1 of 2 wells; 1 filed none
Plug dates filed
Dec 1998 – Mar 1999
2 of 2 wells

Last completion to plug: a median of 16.3 years across the 1 well that filed both dates, with the middle half between 16.3 years and 16.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-0033044239,350 ftDec 1998Yes
42-00303322112,400 ftDec 1982Mar 1999Yes

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 (74)

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

74 months

Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 19985609.201.77$515
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 1998147012.622.21$1,855
Apr 1998015413.042.51$386
Mar 199819415712.802.31$2,846
Feb 1998029613.952.30$681
Jan 199816637114.702.15$3,240
Dec 1997015616.322.41$376
Nov 199715827718.193.09$3,729
Oct 199715732619.253.15$4,049
Sep 1997033217.742.95$981
Aug 199715239817.862.55$3,732
Jul 199715534117.582.25$3,491
Jun 1997029717.242.26$670
May 199711839018.972.31$3,139
Apr 1997039517.882.08$823
Mar 199711815318.951.94$2,533
Feb 199711914320.492.21$2,754
Jan 1997026223.483.54$927
Dec 199612134823.32$2,822
Nov 199611534921.97$2,527
Oct 199611939423.31$2,774
Sep 19969841222.22$2,178
Aug 199611948420.26$2,411
Jul 199612048919.55$2,346
Jun 199611645518.73$2,173
May 199611742119.43$2,273
Apr 199613558021.51$2,904
Mar 199613466419.38$2,597
Feb 1996060216.98$0
Jan 199643664217.07$7,443
Dec 199522069417.19$3,782
Nov 199521973616.00$3,504
Oct 199564979015.43$10,014
Sep 199521666016.18$3,495
Aug 199541946115.92$6,670
Jul 199522816615.24$3,475
Jun 199521857916.41$3,577
May 199522841017.56$4,004
Apr 199547045017.73$8,333
Mar 199522044716.44$3,617
Feb 199522643416.58$3,747
Jan 199523646515.92$3,757
Dec 199422439615.03$3,367
Nov 199447144415.90$7,489
Oct 199423128915.58$3,599
Sep 199422413015.29$3,425
Aug 199445618516.13$7,355
Jul 199422823317.56$4,004
Jun 199423040417.09$3,931
May 199422950615.88$3,637
Apr 199445666414.14$6,448
Mar 199426968312.46$3,352
Feb 199431054212.50$3,875
Jan 199461266812.66$7,748
Dec 199364969312.33$8,002
Nov 199332872114.49$4,753
Oct 199363979415.85$10,128
Sep 199363485015.03$9,529
Aug 199363587615.66$9,944
Jul 199365385115.46$10,095
Jun 199361281716.79$10,275
May 199330379317.68$5,357
Apr 19931,07476618.05$19,386
Mar 199371777318.14$13,006
Feb 199372962617.90$13,049
Jan 19931,08870316.93$18,420

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.

Dec 1998 — as filed, then multipliedworked
Oil                   56 bbl  × $  9.20 =       $515
Casinghead gas         0 Mcf  × $  1.77 =         $0

────────────────────────────────────────────────────
Month total                                     $515

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/23020 is the state's own key, not one this site invented.