COFFMAN

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

Oil lease lease 27018District 08Field 23907142Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$472 k
Jan 1993 – Feb 2002
Value, last 12 filed months
$11 k
at the published price for each month
Months reported
110
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 14 leases and 24 wells, and the rule below applies to all of them.

Discovered
1963-08-21
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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.

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
OilDisposition24,457 bbl$439,227
Casinghead gasProduction30,501 Mcf$32,896
Total$472,123

19,028 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 (3)

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 32.2842, -102.6439. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

32.28374, -102.64367 · 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%
3 of 3 wells
With a plug date
100.0%
3 of 3 wells
Median depth
10,300 ft
3 wells filed one
Completion to plug
16.6 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
3100.0%
A plug date is filed
3100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
3100.0%
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 10,200 and 12,400 ft, median 10,300 ft, over the 3 wells that filed a depth.

Completions filed
May 1982 – May 1984
3 of 3 wells
Plug dates filed
Dec 1998 – Dec 2001
3 of 3 wells

Last completion to plug: a median of 16.6 years across the 3 wells that filed both dates, with the middle half between 16.4 years and 17.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells

42-00334027510,200 ftMay 1984Dec 2001Yes
42-00303322112,400 ftDec 1982Mar 1999Yes
42-00332867410,300 ftMay 1982Dec 1998Yes

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 (110)

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

110 months

Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 200175016.932.36$1,270
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 200126024.563.82$639
May 2001159025.524.31$4,058
Apr 200105124.685.34$272
Mar 20011663724.545.38$4,273
Feb 200139913327.755.77$11,839
Jan 2001016727.478.40$1,403
Dec 200017713726.889.12$6,008
Nov 20001978532.215.66$6,826
Oct 2000019131.235.15$983
Sep 200017623231.875.19$6,812
Aug 200018413829.644.54$6,080
Jul 200018616528.534.09$5,981
Jun 200037116129.304.40$11,578
May 200018418127.263.68$5,682
Apr 200004824.513.12$150
Mar 2000014828.422.86$423
Feb 2000014327.622.73$390
Jan 200017314025.272.48$4,719
Dec 199936821724.282.42$9,461
Nov 1999017523.192.43$426
Oct 199936529620.982.80$8,488
Sep 1999021721.752.62$568
Aug 199936523419.262.88$7,703
Jul 1999020217.892.37$479
Jun 199936121915.942.36$6,272
May 199935719515.792.32$6,090
Apr 1999017515.102.21$386
Mar 199935921612.471.84$4,874
Feb 199901669.981.82$302
Jan 1999013410.381.90$255
Dec 19983121499.201.77$3,135
Nov 1998014510.892.19$317
Oct 199836621912.421.97$4,977
Sep 1998023112.592.08$481
Aug 199836525611.301.91$4,613
Jul 1998030311.742.24$678
Jun 199836727911.242.24$4,749
May 199822029112.622.21$3,418
Apr 1998016113.042.51$403
Mar 199829016412.802.31$4,091
Feb 1998023313.952.30$536
Jan 199824829114.702.15$4,273
Dec 1997024616.322.41$593
Nov 199732137318.193.09$6,991
Oct 199731934019.253.15$7,212
Sep 1997034617.742.95$1,022
Aug 199731041517.862.55$6,597
Jul 199730034117.582.25$6,040
Jun 1997037917.242.26$855
May 199735449618.972.31$7,860
Apr 1997050317.882.08$1,048
Mar 199735519418.951.94$7,103
Feb 199735918120.492.21$7,755
Jan 1997033423.483.54$1,182
Dec 199636530823.32$8,512
Nov 199634731021.97$7,624
Oct 199635934923.31$8,368
Sep 199629436522.22$6,533
Aug 199635643020.26$7,213
Jul 199636043319.55$7,038
Jun 199634940318.73$6,537
May 199635037319.43$6,801
Apr 199634634021.51$7,442
Mar 199634339019.38$6,647
Feb 1996024616.98$0
Jan 199653326217.07$9,098
Dec 199526828317.19$4,607
Nov 199527130016.00$4,336
Oct 199579332315.43$12,236
Sep 199526527016.18$4,288
Aug 199551318815.92$8,167
Jul 199524616715.24$3,749
Jun 199523658016.41$3,873
May 199524641117.56$4,320
Apr 199551045117.73$9,042
Mar 199523944816.44$3,929
Feb 199524643416.58$4,079
Jan 199525646615.92$4,076
Dec 199424339615.03$3,652
Nov 199451144515.90$8,125
Oct 199425129015.58$3,911
Sep 199424213015.29$3,700
Aug 199449318516.13$7,952
Jul 199424623417.56$4,320
Jun 199425040517.09$4,273
May 199424950615.88$3,954
Apr 199449452214.14$6,985
Mar 199423047512.46$2,866
Feb 199417433212.50$2,175
Jan 199434446412.66$4,355
Dec 199331942412.33$3,933
Nov 199316244214.49$2,347
Oct 199331548615.85$4,993
Sep 199331252115.03$4,689
Aug 199332853715.66$5,136
Jul 199330959115.46$4,777
Jun 199334456816.79$5,776
May 199317955117.68$3,165
Apr 199337853318.05$6,823
Mar 199325353818.14$4,589
Feb 199324343517.90$4,350
Jan 199336348816.93$6,146

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 2001 — as filed, then multipliedworked
Oil                   75 bbl  × $ 16.93 =     $1,270
Casinghead gas         0 Mcf  × $  2.36 =         $0

────────────────────────────────────────────────────
Month total                                   $1,270

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/27018 is the state's own key, not one this site invented.