MCGILL BROS.

Operated by EXXON MOBIL CORPORATION (P-5 257128) in the KELSEY, DEEP (ZONE 19-K) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4856District 04Field 48631360NGPA filingOilCasinghead gasSaveExport
Value, all time
$194 k
Jan 1993 – Jun 2000
Value, last 12 filed months
$27 k
at the published price for each month
Months reported
90
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 1 leases and 16 wells, and the rule below applies to all of them.

Discovered
1945-09-03
as the register files it
Field class
Oil
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 40 acres.

The Commission's schedule remark for this field reads: FIELD CREATED BY TRANSFER FROM KELSEY /DEEP, ZONE 19/ EFF. 9-1-60

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
OilDisposition10,420 bbl$181,090
Casinghead gasProduction17,060 Mcf$13,214
Total$194,305

11,743 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 (16)

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 26.8048, -98.3968. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.5 miles.

26.80563, -98.39708 · 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%
16 of 16 wells
With a plug date
100.0%
16 of 16 wells
Median depth
6,398 ft
16 wells filed one
Completion to plug
17.2 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
16100.0%
A plug date is filed
16100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
16100.0%
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

Total depth in feet, 16 of 16 wells. Median 6,398 ft, with the middle half between 6,186 and 6,454 ft; the shallowest is 6,120 ft and the deepest 7,900 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, 8 of 16 wells, Jun 1953 – Oct 1993. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 1953 – Oct 1993
8 of 16 wells; 8 filed none
Plug dates filed
Jul 1974 – Apr 2005
16 of 16 wells

Last completion to plug: a median of 17.2 years across the 8 wells that filed both dates, with the middle half between 12.1 years and 20.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

16 wells

42-04701074137 C6,422 ftOct 1978Yes
42-04701076139 T6,800 ftJul 1974Yes
42-04701079151 T6,550 ftJun 1992Yes
42-04701092271 F6,152 ftAug 1977Yes
42-04701096141 T6,402 ftNov 1995Yes
42-04701097136 T6,758 ftAug 1988Yes
42-047011311356,163 ftJan 1987Yes
42-04701668409 D6,120 ftApr 2005Yes
42-04701054263 D6,350 ftOct 1993Sep 1995Yes
42-047313635107,900 ftMar 1992Dec 1995Yes
42-047011271666,400 ftNov 1980Sep 1995Yes
42-04701045152 U6,397 ftMar 1962May 1979Yes
42-04701091266 D6,230 ftJul 1961Sep 1978Yes
42-04701116288 D6,175 ftMay 1961Mar 1991Yes
42-04701093270 D6,190 ftMar 1961Nov 1978Yes
42-047011031916,399 ftJun 1953Oct 2001Yes

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 (90)

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

90 months

Jun 20000029.304.40$0
May 2000874927.263.68$2,552
Apr 2000823024.513.12$2,103
Mar 2000899828.422.86$2,810
Feb 2000842227.622.73$2,380
Jan 2000922425.272.48$2,384
Dec 1999859524.282.42$2,294
Nov 1999913723.192.43$2,200
Oct 1999813720.982.80$1,803
Sep 199914734921.752.62$4,111
Aug 19998831319.262.88$2,595
Jul 19998630517.892.37$2,262
Jun 19997224115.942.36$1,717
May 19998429315.792.32$2,006
Apr 199911242815.102.21$2,636
Mar 199912115612.471.84$1,796
Feb 1999991719.981.82$1,299
Jan 1999909110.381.90$1,107
Dec 199892659.201.77$962
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 19983012.622.21$38
Apr 199813013.042.51$170
Mar 19981293612.802.31$1,734
Feb 199810014513.952.30$1,728
Jan 199811312914.702.15$1,939
Dec 19977835416.322.41$2,126
Nov 19978426118.193.09$2,334
Oct 19977023219.253.15$2,078
Sep 19971132417.742.95$2,076
Aug 19971002317.862.55$1,845
Jul 19971142717.582.25$2,065
Jun 19979329717.242.26$2,274
May 1997742918.972.31$1,471
Apr 199712124617.882.08$2,676
Mar 1997788118.951.94$1,635
Feb 19977530720.492.21$2,214
Jan 19977932223.483.54$2,995
Dec 19968143723.32$1,889
Nov 19968942021.97$1,955
Oct 199610551123.31$2,448
Sep 199612830122.22$2,844
Aug 199620530320.26$4,153
Jul 199624315319.55$4,751
Jun 19961434618.73$2,678
May 19962067819.43$4,003
Apr 199620314421.51$4,367
Mar 199620918819.38$4,050
Feb 19961529416.98$2,581
Jan 19961948317.07$3,312
Dec 199514127717.19$2,424
Nov 19951205916.00$1,920
Oct 1995864315.43$1,327
Sep 199515032816.18$2,427
Aug 199517045115.92$2,706
Jul 199514043715.24$2,134
Jun 199510133116.41$1,657
May 199515030917.56$2,634
Apr 199511436517.73$2,021
Mar 199514043416.44$2,302
Feb 199511737716.58$1,940
Jan 199512634615.92$2,006
Dec 199412438315.03$1,864
Nov 199412439715.90$1,972
Oct 19949531015.58$1,480
Sep 199412026015.29$1,835
Aug 199410714316.13$1,726
Jul 199411729117.56$2,055
Jun 199412119017.09$2,068
May 19942451,63915.88$3,891
Apr 199414222114.14$2,008
Mar 1994528712.46$648
Feb 1994174112.50$2,175
Jan 1994179112.66$2,266
Dec 199320119012.33$2,478
Nov 199316073914.49$2,318
Oct 199319036715.85$3,012
Sep 1993164115.03$2,465
Aug 1993204115.66$3,195
Jul 1993183115.46$2,829
Jun 1993187116.79$3,140
May 1993203117.68$3,589
Apr 1993193118.05$3,484
Mar 1993182118.14$3,301
Feb 1993134117.90$2,399
Jan 1993187116.93$3,166

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.

May 2000 — as filed, then multipliedworked
Oil                   87 bbl  × $ 27.26 =     $2,372
Casinghead gas        49 Mcf  × $  3.68 =       $180

────────────────────────────────────────────────────
Month total                                   $2,552

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. 04/O/4856 is the state's own key, not one this site invented.