MCWILLIAMS UNIT

Operated by 7711 CORPORATION, THE (P-5 954998) in the GIDDINGS (AUSTIN CHALK-3) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 21891District 03Field 34733500OilCasinghead gasSaveExport
Value, all time
$2.5 M
Jan 1993 – Sep 2010
Value, last 12 filed months
$12 k
at the published price for each month
Months reported
213
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 5,900 leases and 6,985 wells, and the rule below applies to all of them.

Discovered
1960-10-29
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 2025-09-30.

The Commission's schedule remark for this field reads: DKT OG-25-00028011: UFT FIELD, ALLOCATION FORMULA SUSPENDED

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
OilDisposition137,482 bbl$2,305,242
Casinghead gasProduction368,297 Mcf$176,441
Total$2,481,683

296,147 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 (1)

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 30.6409, -96.2290. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.64085, -96.22903 · 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%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
13,645 ft
1 wells filed one
Completion to plug
12.7 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
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

The one well that filed a depth was drilled to 13,645 ft.

Completions filed
Apr 2010
1 of 1 wells
Plug dates filed
Dec 2022
1 of 1 wells

Last completion to plug: a median of 12.7 years across the 1 well that filed both dates, with the middle half between 12.7 years and 12.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-04131693113,645 ftApr 2010Dec 2022Yes

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 (213)

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

213 months

Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 2010141081.694.12$11,518
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
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 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 20070059.617.81$0
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 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 200217823017.172.38$3,603
Dec 2001023016.932.36$544
Nov 20013471518.072.41$6,306
Oct 2001023519.782.53$594
Sep 2001024924.262.25$561
Aug 2001017724.873.05$540
Jul 200117727623.933.20$5,118
Jun 2001021324.563.82$815
May 2001037425.524.31$1,611
Apr 200136477424.685.34$13,113
Mar 200114024.545.38$240
Feb 20010027.755.77$0
Jan 2001025427.478.40$2,133
Dec 200018047326.889.12$9,153
Nov 2000027032.215.66$1,528
Oct 200017840231.235.15$7,627
Sep 2000023531.875.19$1,219
Aug 200035540329.644.54$12,352
Jul 2000037728.534.09$1,542
Jun 200017931329.304.40$6,621
May 200036434027.263.68$11,174
Apr 2000034924.513.12$1,087
Mar 2000039228.422.86$1,121
Feb 200036841727.622.73$11,301
Jan 2000038925.272.48$965
Dec 199918744624.282.42$5,621
Nov 1999036923.192.43$898
Oct 199917749120.982.80$5,090
Sep 199918453621.752.62$5,406
Aug 199917073519.262.88$5,388
Jul 199917660617.892.37$4,586
Jun 1999075515.942.36$1,783
May 199918682115.792.32$4,843
Apr 19991871,17215.102.21$5,412
Mar 199918671912.471.84$3,641
Feb 19993631,3419.981.82$6,060
Jan 19993781,31210.381.90$6,416
Dec 19981881,1359.201.77$3,742
Nov 199819097710.892.19$4,205
Oct 19985272,43912.421.97$11,348
Sep 19987312,80712.592.08$15,049
Aug 19987173,68511.301.91$15,131
Jul 19989095,68911.742.24$23,399
Jun 19981,7998,93011.242.24$40,200
May 19982,89714,36112.622.21$68,245
Apr 19981,4523,90013.042.51$28,705
Mar 19987281,75612.802.31$13,374
Feb 19980013.952.30$0
Jan 19980014.702.15$0
Dec 199705616.322.41$135
Nov 199736670118.193.09$8,822
Oct 1997044419.253.15$1,399
Sep 1997181017.742.95$3,211
Aug 19973631,40117.862.55$10,062
Jul 199721,85517.582.25$4,203
Jun 199735785117.242.26$8,076
May 1997585318.972.31$2,064
Apr 19973541,23617.882.08$8,904
Mar 19973531,39718.951.94$9,398
Feb 1997534520.492.21$863
Jan 199735960223.483.54$10,560
Dec 19963601,24123.32$8,395
Nov 19963641,68721.97$7,997
Oct 19963671,82423.31$8,555
Sep 199612,00422.22$22
Aug 19963421,32220.26$6,929
Jul 19963631,41919.55$7,097
Jun 19963551,48018.73$6,649
May 199641,11219.43$78
Apr 19963631,10421.51$7,808
Mar 19963631,62119.38$7,035
Feb 19967302,45816.98$12,395
Jan 19963682,58617.07$6,282
Dec 19953672,57117.19$6,309
Nov 19953691,17816.00$5,904
Oct 19953461,75215.43$5,339
Sep 19957132,20116.18$11,536
Aug 19953552,87515.92$5,652
Jul 19957372,05315.24$11,232
Jun 1995515016.41$82
May 199511117.56$193
Apr 19957251,54417.73$12,854
Mar 19953733,08416.44$6,132
Feb 19957403,05716.58$12,269
Jan 19951,1004,53415.92$17,512
Dec 19941792,28715.03$2,690
Nov 19941,0943,03815.90$17,395
Oct 19947244,31415.58$11,280
Sep 19941,0844,12915.29$16,574
Aug 19947273,85516.13$11,727
Jul 19941,1113,84917.56$19,509
Jun 19941,1036,03317.09$18,850
May 19947225,66615.88$11,465
Apr 19941,4316,60714.14$20,234
Mar 19941,0932,70412.46$13,619
Feb 19941,0883,26112.50$13,600
Jan 19941,4746,25812.66$18,661
Dec 19931,8614,84312.33$22,946
Nov 19931,6484,01414.49$23,880
Oct 19932,2026,58515.85$34,902
Sep 19932,7697,82415.03$41,618
Aug 19933,79912,09215.66$59,492
Jul 199311,00521,32115.46$170,137
Jun 19934,21410,56516.79$70,753
May 19935,53915,47017.68$97,930
Apr 19936,22216,00218.05$112,307
Mar 199311,62326,70318.14$210,841
Feb 199326,01040,05317.90$465,579
Jan 199321,43033,81616.93$362,810

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.

Apr 2010 — as filed, then multipliedworked
Oil                  141 bbl  × $ 81.69 =    $11,518
Casinghead gas         0 Mcf  × $  4.12 =         $0

────────────────────────────────────────────────────
Month total                                  $11,518

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. 03/O/21891 is the state's own key, not one this site invented.