MCGILL BROS.

Operated by EXXON MOBIL CORPORATION (P-5 257128) in the KELSEY, DEEP (ZONE 22-A) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5140District 04Field 48631768NGPA filingOilCasinghead gasSaveExport
Value, all time
$1.0 M
Jan 1993 – Jun 2000
Value, last 12 filed months
$81 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 3 leases and 25 wells, and the rule below applies to all of them.

Discovered
1945-08-10
as the register files it
Field class
Oil and gas
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 field rule took effect on 1945-12-10.

The Commission's schedule remark for this field reads: KELSEY SOUTH /6250 SD./ FLDS. EFF. 1-1-62

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
NGPA1none

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
OilDisposition55,297 bbl$890,240
Casinghead gasProduction138,281 Mcf$122,840
Total$1,013,080

85,785 Mcf of this lease's gas, across 45 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 (23)

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 26.7796, -98.4133. A lease has no coordinate of its own — that point is the mean of its wells, and they span 2.3 miles. 1 well has no surveyed location and is left out of it.

26.78947, -98.41361 · centre of 22 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%
23 of 23 wells
With a plug date
91.3%
21 of 23 wells
Median depth
6,867 ft
22 wells filed one
Completion to plug
9.5 years
median over 16 wells

What the state filed about each well

On the RRC proration schedule
23100.0%
A plug date is filed
2191.3%
BothOn the schedule and plugged. Neither fact cancels the other.
2191.3%
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 23 wells. Median 6,867 ft, with the middle half between 6,543 and 7,537 ft; the shallowest is 6,350 ft and the deepest 9,515 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, 17 of 23 wells, Feb 1974 – Jul 2012. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Feb 1974 – Jul 2012
17 of 23 wells; 6 filed none
Plug dates filed
Nov 1978 – Nov 2025
21 of 23 wells; 2 filed none

Last completion to plug: a median of 9.5 years across the 16 wells that filed both dates, with the middle half between 4.0 years and 16.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

23 wells

42-04701166226 C6,850 ftOct 1990Yes
42-04780348187 CYes
42-42700215179 T7,748 ftNov 1978Yes
42-42700226222 T7,550 ftOct 1979Yes
42-427002342407,498 ftNov 1988Yes
42-42705104407 F6,550 ftNov 1983Yes
42-42700223211 T7,237 ftJul 2012Nov 2025Yes
42-047309724778,285 ftJan 2005Nov 2009Yes
42-427002382686,502 ftJun 1999Mar 2011Yes
42-427002402776,390 ftMar 1999May 2006Yes
42-42730247431 D6,540 ftOct 1998Aug 2004Yes
42-42700230230 C7,223 ftJan 1998May 2001Yes
42-42704993393 D6,800 ftSep 1997Jul 2010Yes
42-427002272246,883 ftSep 1989Nov 1993Yes
42-42704994396 D6,350 ftApr 1989Sep 2008Yes
42-42700233238 C9,515 ftDec 1984Feb 1985Yes
42-4270020756 E6,600 ftJul 1983Yes
42-42705101406 F8,100 ftJan 1981Oct 1983Yes
42-42720117368 D6,530 ftJul 1980Jun 1983Yes
42-42730620442 F6,515 ftMay 1980Oct 2010Yes
42-04701158200 T7,296 ftMar 1979Sep 1995Yes
42-04701161185 T7,803 ftJan 1977Sep 2010Yes
42-427048693626,550 ftFeb 1974Sep 1990Yes

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 20000027.263.68$0
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 199933493024.282.42$10,364
Nov 199937791623.192.43$10,972
Oct 199930892120.982.80$9,044
Sep 19995651,09221.752.62$15,149
Aug 19995402,47219.262.88$17,509
Jul 19996063,21017.892.37$18,457
Jun 19995252,48215.942.36$14,231
May 19995452,86215.792.32$15,248
Apr 19996906,59115.102.21$24,972
Mar 19996801,84212.471.84$11,866
Feb 19994892,0349.981.82$8,578
Jan 19995401,23410.381.90$7,950
Dec 19986459689.201.77$7,651
Nov 19986171,99210.892.19$11,073
Oct 19986291,79412.421.97$11,345
Sep 19985271,58812.592.08$9,942
Aug 19984761,62011.301.91$8,469
Jul 19984231,43411.742.24$8,174
Jun 19984681,66911.242.24$8,994
May 199835657012.622.21$5,750
Apr 19982231,49013.042.51$6,641
Mar 199844028012.802.31$6,279
Feb 199832944413.952.30$5,610
Jan 199838245014.702.15$6,585
Dec 19972361,22216.322.41$6,798
Nov 19974471,59818.193.09$13,066
Oct 19974971,44619.253.15$14,122
Sep 199750720317.742.95$9,594
Aug 199748721917.862.55$9,257
Jul 199756925817.582.25$10,583
Jun 19974911,80617.242.26$12,541
May 199739224218.972.31$7,995
Apr 199742175417.882.08$9,098
Mar 199735837518.951.94$7,511
Feb 19976011,74020.492.21$16,153
Jan 19975061,74823.483.54$18,068
Dec 19965192,51423.32$12,103
Nov 19966392,49421.97$14,039
Oct 19966572,92823.31$15,315
Sep 19968111,57522.22$18,020
Aug 19968001,43420.26$16,208
Jul 199656125819.55$10,968
Jun 1996441118.73$824
May 199640119819.43$7,791
Apr 199635566621.51$7,636
Mar 199630666419.38$5,930
Feb 199624947716.98$4,228
Jan 199631327717.07$5,343
Dec 19955010917.19$860
Nov 19950016.00$0
Oct 19952015.43$31
Sep 1995214316.18$340
Aug 199522915.92$350
Jul 199517826415.24$2,713
Jun 1995444716.41$722
May 19954071,44417.56$7,147
Apr 19954381,78017.73$7,766
Mar 19955561,23816.44$9,141
Feb 199517546716.58$2,902
Jan 199551015.92$812
Dec 19943941,21515.03$5,922
Nov 19949283,02315.90$14,755
Oct 19949723,15715.58$15,144
Sep 19941,0782,21515.29$16,483
Aug 19941,145116.13$18,469
Jul 19941,0581,55217.56$18,578
Jun 199459940717.09$10,237
May 1994824115.88$13,085
Apr 19941,05811414.14$14,960
Mar 19941,33839512.46$16,671
Feb 19941,54890212.50$19,350
Jan 19941,8681,97912.66$23,649
Dec 19933,10810,00012.33$38,322
Nov 19931,3658,40714.49$19,779
Oct 19931,90715,36215.85$30,226
Sep 19931,1832,33415.03$17,780
Aug 19931,2412,74215.66$19,434
Jul 19931,1413,10615.46$17,640
Jun 19931,1512,76516.79$19,325
May 19931,4271,52717.68$25,229
Apr 19931,4781,18818.05$26,678
Mar 19931,4341,73318.14$26,013
Feb 19938471,75517.90$15,161
Jan 19931,3801,00816.93$23,363

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 1999 — as filed, then multipliedworked
Oil                  334 bbl  × $ 24.28 =     $8,110
Casinghead gas       930 Mcf  × $  2.42 =     $2,254

────────────────────────────────────────────────────
Month total                                  $10,364

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/5140 is the state's own key, not one this site invented.