MCWILLIAMS, GLENN

Operated by BLACK MAC OIL, INC. (P-5 72693) in the TAYLOR-INA field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 6690District 01Field 88534001OilCasinghead gasSaveExport
Value, all time
$422 k
Jan 1993 – May 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
401
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 230 leases and 2,444 wells, and the rule below applies to all of them.

Discovered
1936-02-02
as the register files it
Field class
Oil and gas
the register's own label
Between wells
300 ft
minimum
From a lease line
150 ft
minimum

A drilling unit in this field needs at least 2 acres.

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
OilDisposition11,267 bbl$422,029
Casinghead gasProduction124 Mcf$253
Total$422,282

48 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 (31)

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 29.2631, -99.0499. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

29.26450, -99.05143 · 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
6.5%
2 of 31 wells
With a plug date
6.5%
2 of 31 wells
Median depth
350 ft
30 wells filed one
Completion to plug
3.7 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
26.5%
A plug date is filed
26.5%
BothOn the schedule and plugged. Neither fact cancels the other.
26.5%
NeitherNo plug date, and not on the schedule.
2993.5%

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, 30 of 31 wells. Median 350 ft, with the middle half between 340 and 350 ft; the shallowest is 196 ft and the deepest 350 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, 29 of 31 wells, Feb 1981 – Oct 1983. 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 1981 – Oct 1983
29 of 31 wells; 2 filed none
Plug dates filed
Dec 1986
2 of 31 wells; 29 filed none

Last completion to plug: a median of 3.7 years across the 2 wells that filed both dates, with the middle half between 3.7 years and 3.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

31 wells

42-3253142111340 ft
42-325315757350 ft
42-32532778102350 ftOct 1983
42-32532589101196 ftApr 1983Dec 1986Yes
42-32532587101 A196 ftApr 1983Dec 1986Yes
42-3253158395350 ftMar 1981
42-3253158496350 ftMar 1981
42-3253158597350 ftMar 1981
42-3253161098350 ftMar 1981
42-3253161393350 ftMar 1981
42-3253161494350 ftMar 1981
42-3253159025340 ftMar 1981
42-3253158290350 ftMar 1981
42-3253158621350 ftMar 1981
42-3253158722350 ftMar 1981
42-3253158823350 ftMar 1981
42-3253158924350 ftMar 1981
42-3253159188340 ftMar 1981
42-3253159289340 ftMar 1981
42-32531608100350 ftMar 1981
42-3253160999350 ftMar 1981
42-3253161191350 ftMar 1981
42-3253161292350 ftMar 1981
42-3253156812340 ftFeb 1981
42-3253156520340 ftFeb 1981
42-325315669340 ftFeb 1981
42-3253156710340 ftFeb 1981
42-3253142519Feb 1981
42-325315648340 ftFeb 1981
42-3253157418340 ftFeb 1981
42-325313676340 ftFeb 1981

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 (401)

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

401 months

May 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 20221470109.378.43$16,077
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 201644041.442.92$1,823
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 201672042.521.99$3,061
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 201545044.662.98$2,010
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 201449086.164.05$4,222
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 201459098.164.74$5,791
May 20140094.734.73$0
Apr 201424095.944.81$2,303
Mar 20140095.895.06$0
Feb 201461097.406.19$5,941
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 201345088.853.74$3,998
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 2013470104.253.52$4,900
Jul 201300102.523.72$0
Jun 201360094.403.93$5,664
May 20130094.834.15$0
Apr 201361093.964.28$5,732
Mar 20130093.623.91$0
Feb 201361091.233.42$5,565
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 201255086.953.62$4,782
Oct 20120089.383.40$0
Sep 201266094.672.92$6,248
Aug 20120092.662.91$0
Jul 201262085.133.02$5,278
Jun 20120079.822.52$0
May 201241091.612.49$3,756
Apr 201200101.652.00$0
Mar 2012830105.052.22$8,719
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 2011108096.873.24$10,462
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 201189083.404.15$7,423
Jul 20110094.144.52$0
Jun 201167092.904.64$6,224
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 2011113096.364.06$10,889
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 2010116080.843.80$9,377
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 2010113073.684.42$8,326
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 201076071.124.24$5,405
Apr 20100081.694.12$0
Mar 201065078.394.39$5,095
Feb 20100073.585.44$0
Jan 201049074.365.96$3,644
Dec 20090071.445.48$0
Nov 2009111074.593.75$8,279
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 2009121061.133.46$7,397
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 200983042.144.06$3,498
Feb 20090032.814.63$0
Jan 2009128035.865.37$4,590
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 2008370123.1711.57$4,557
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 200885092.538.77$7,865
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 200738075.846.24$2,882
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 200728062.007.55$1,736
May 20070058.747.85$0
Apr 2007110059.617.81$6,557
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 200643069.376.34$2,983
Jun 20060066.286.38$0
May 200655066.016.42$3,631
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 200658057.597.75$3,340
Jan 20060060.598.93$0
Dec 200544054.9413.42$2,417
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 200570061.4512.08$4,302
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 200547045.226.65$2,125
Apr 20050049.207.36$0
Mar 200579050.377.15$3,979
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 200457045.286.33$2,581
Oct 20040049.706.52$0
Sep 200480043.245.28$3,459
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 200494036.106.43$3,393
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 2004124034.365.53$4,261
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 200396028.804.60$2,765
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 2003129029.765.13$3,839
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20032,940026.595.97$78,175
Apr 200391126.675.41$2,432
Mar 20030131.146.10$6
Feb 20030133.487.93$8
Jan 2003111130.315.58$3,370
Dec 20020126.914.85$5
Nov 20020124.664.14$4
Oct 200285126.464.23$2,253
Sep 20020127.443.64$4
Aug 2002146125.963.16$3,793
Jul 20020124.583.06$3
Jun 20020123.733.34$3
May 20020124.663.58$4
Apr 200290123.653.51$2,132
Mar 20020122.003.10$3
Feb 20020118.222.38$2
Jan 2002150117.172.38$2,578
Dec 20010116.932.36$2
Nov 20010118.072.41$2
Oct 20010119.782.53$3
Sep 20010124.262.25$2
Aug 200192124.873.05$2,291
Jul 20010123.933.20$3
Jun 20010124.563.82$4
May 20010125.524.31$4
Apr 2001142124.685.34$3,510
Mar 20010124.545.38$5
Feb 20010127.755.77$6
Jan 20010127.478.40$8
Dec 20000126.889.12$9
Nov 200084132.215.66$2,711
Oct 20000131.235.15$5
Sep 20000131.875.19$5
Aug 2000152129.644.54$4,510
Jul 20000128.534.09$4
Jun 20000129.304.40$4
May 20000127.263.68$4
Apr 200065124.513.12$1,596
Mar 20000128.422.86$3
Feb 20000127.622.73$3
Jan 200074125.272.48$1,872
Dec 19990124.282.42$2
Nov 1999121123.192.43$2,808
Oct 19990120.982.80$3
Sep 19990121.752.62$3
Aug 19990119.262.88$3
Jul 199982117.892.37$1,469
Jun 19990115.942.36$2
May 19990115.792.32$2
Apr 199970115.102.21$1,059
Mar 19990112.471.84$2
Feb 199910319.981.82$1,030
Jan 19990110.381.90$2
Dec 1998019.201.77$2
Nov 19980110.892.19$2
Oct 19980112.421.97$2
Sep 199889112.592.08$1,123
Aug 19980111.301.91$2
Jul 19980111.742.24$2
Jun 199889111.242.24$1,003
May 19980112.622.21$2
Apr 1998149113.042.51$1,945
Mar 19980112.802.31$2
Feb 19980113.952.30$2
Jan 19980114.702.15$2
Dec 199757116.322.41$933
Nov 19970118.193.09$3
Oct 199799119.253.15$1,909
Sep 19970117.742.95$3
Aug 19970117.862.55$3
Jul 1997104117.582.25$1,831
Jun 19970117.242.26$2
May 199790118.972.31$1,710
Apr 19970117.882.08$2
Mar 1997122118.951.94$2,314
Feb 19970120.492.21$2
Jan 19970123.483.54$4
Dec 199698123.32$2,285
Nov 19960121.97$0
Oct 19960123.31$0
Sep 199696122.22$2,133
Aug 19960120.26$0
Jul 1996113119.55$2,209
Jun 19960118.73$0
May 19960119.43$0
Apr 199695121.51$2,043
Mar 19960119.38$0
Feb 199699116.98$1,681
Jan 19960117.07$0
Dec 199578117.19$1,341
Nov 19950116.00$0
Oct 1995114115.43$1,759
Sep 19950116.18$0
Aug 1995115115.92$1,831
Jul 19950115.24$0
Jun 19950116.41$0
May 1995119117.56$2,090
Apr 19950117.73$0
Mar 1995102116.44$1,677
Feb 19950116.58$0
Jan 199590115.92$1,433
Dec 19940115.03$0
Nov 199496115.90$1,526
Oct 19940115.58$0
Sep 1994114115.29$1,743
Aug 19940116.13$0
Jul 19940117.56$0
Jun 1994123117.09$2,102
May 19940115.88$0
Apr 1994118114.14$1,669
Mar 19940112.46$0
Feb 19940112.50$0
Jan 199495112.66$1,203
Dec 19930112.33$0
Nov 1993110114.49$1,594
Oct 19930115.85$0
Sep 1993112115.03$1,683
Aug 19930115.66$0
Jul 1993150115.46$2,319
Jun 19930116.79$0
May 19930117.68$0
Apr 199390118.05$1,625
Mar 19930118.14$0
Feb 1993148117.90$2,649
Jan 19930116.93$0

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 2022 — as filed, then multipliedworked
Oil                  147 bbl  × $109.37 =    $16,077
Casinghead gas         0 Mcf  × $  8.43 =         $0

────────────────────────────────────────────────────
Month total                                  $16,077

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. 01/O/6690 is the state's own key, not one this site invented.