BLACKNALL, SALLY

Operated by WESTERN GULF OIL & GAS, LLC (P-5 911925) in the CLARA DRISCOLL (6600) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 9163District 04Field 18514900OilCasinghead gasSaveExport
Value, all time
$824 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 1 leases and 1 wells, and the rule below applies to all of them.

Discovered
1965-12-29
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

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
OilDisposition40,293 bbl$818,792
Casinghead gasProduction3,052 Mcf$4,790
Total$823,582

1,408 Mcf of this lease's gas, across 47 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 27.6790, -97.7191. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

27.67897, -97.71907 · 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
6,820 ft
1 wells filed one
Completion to plug
47.1 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 6,820 ft.

Completions filed
Aug 1978
1 of 1 wells
Plug dates filed
Sep 2025
1 of 1 wells

Last completion to plug: a median of 47.1 years across the 1 well that filed both dates, with the middle half between 47.1 years and 47.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-3553129136,820 ftAug 1978Sep 2025Yes

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 202200109.378.43$0
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 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
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 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
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 20100081.694.12$0
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 2005444045.226.31$20,078
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 2004168045.286.33$7,607
Oct 2004335049.706.52$16,650
Sep 2004160043.245.28$6,918
Aug 2004504042.375.55$21,354
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 2004209034.475.86$7,204
Mar 20040034.365.53$0
Feb 2004344032.455.51$11,163
Jan 2004167032.036.30$5,349
Dec 2003352030.266.30$10,652
Nov 2003144028.804.60$4,147
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 2003143029.765.13$4,256
Jul 2003352029.415.17$10,352
Jun 2003349028.565.98$9,967
May 2003353026.595.97$9,386
Apr 2003358026.675.41$9,548
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 2002517026.914.85$13,912
Nov 20020024.664.14$0
Oct 2002355026.464.23$9,393
Sep 2002177027.443.64$4,857
Aug 2002139025.963.16$3,608
Jul 2002178024.583.06$4,375
Jun 2002342023.733.34$8,116
May 2002345024.663.58$8,508
Apr 2002152023.653.51$3,595
Mar 2002357022.003.10$7,854
Feb 20023611918.222.38$6,623
Jan 200201917.172.38$45
Dec 200101916.932.36$45
Nov 20011301918.072.41$2,395
Oct 20011721919.782.53$3,450
Sep 20013541924.262.25$8,631
Aug 20011782024.873.05$4,488
Jul 20011781423.933.20$4,304
Jun 200101724.563.82$65
May 20014433625.524.31$11,460
Apr 20011773424.685.34$4,550
Mar 20010024.545.38$0
Feb 20010627.755.77$35
Jan 2001292627.478.40$8,072
Dec 20003273326.889.12$9,091
Nov 20001042532.215.66$3,491
Oct 20001792431.235.15$5,714
Sep 20002642631.875.19$8,549
Aug 20001802629.644.54$5,453
Jul 20003433228.534.09$9,917
Jun 20001761529.304.40$5,223
May 20002303227.263.68$6,388
Apr 20003452924.513.12$8,546
Mar 20004233928.422.86$12,133
Feb 20000727.622.73$19
Jan 20001692425.272.48$4,330
Dec 1999157024.282.42$3,812
Nov 19990023.192.43$0
Oct 19991801220.982.80$3,810
Sep 19994753021.752.62$10,410
Aug 199902519.262.88$72
Jul 19993192117.892.37$5,757
Jun 19993453815.942.36$5,589
May 19991723015.792.32$2,786
Apr 19993392615.102.21$5,176
Mar 19993393812.471.84$4,297
Feb 1999309329.981.82$3,142
Jan 19993183410.381.90$3,365
Dec 1998423459.201.77$3,971
Nov 1998156010.892.19$1,699
Oct 19981431812.421.97$1,812
Sep 19980612.592.08$13
Aug 19983412911.301.91$3,909
Jul 19983583911.742.24$4,290
Jun 19983463711.242.24$3,972
May 19982903812.622.21$3,744
Apr 19985253813.042.51$6,941
Mar 19981773812.802.31$2,353
Feb 19983493013.952.30$4,938
Jan 19983514214.702.15$5,250
Dec 19973973516.322.41$6,563
Nov 19974593918.193.09$8,470
Oct 19974613419.253.15$8,981
Sep 19973513717.742.95$6,336
Aug 19973593917.862.55$6,511
Jul 19975364117.582.25$9,515
Jun 19972804017.242.26$4,917
May 19973914318.972.31$7,517
Apr 19974864417.882.08$8,781
Mar 19973603918.951.94$6,898
Feb 19973543820.492.21$7,337
Jan 199701023.483.54$35
Dec 19964402823.32$10,261
Nov 19965345921.97$11,732
Oct 19965305023.31$12,354
Sep 19961792822.22$3,977
Aug 19961831820.26$3,708
Jul 19965274119.55$10,303
Jun 19961772818.73$3,315
May 19963573719.43$6,937
Apr 19963233721.51$6,948
Mar 19965444719.38$10,543
Feb 19963603216.98$6,113
Jan 19963584417.07$6,111
Dec 19954304117.19$7,392
Nov 19953473616.00$5,552
Oct 19952873315.43$4,428
Sep 19950016.18$0
Aug 19957155515.92$11,383
Jul 19953293515.24$5,014
Jun 19956243016.41$10,240
May 199503917.56$0
Apr 19954353717.73$7,713
Mar 19953483316.44$5,721
Feb 19953423116.58$5,670
Jan 19955094015.92$8,103
Dec 19943434515.03$5,155
Nov 19943424415.90$5,438
Oct 19943082515.58$4,799
Sep 19943442515.29$5,260
Aug 19943402516.13$5,484
Jul 19945022517.56$8,815
Jun 19943422017.09$5,845
May 19941692015.88$2,684
Apr 19941712014.14$2,418
Mar 19943462012.46$4,311
Feb 19943672012.50$4,588
Jan 19945442012.66$6,887
Dec 19931872012.33$2,306
Nov 19931702514.49$2,463
Oct 19935472515.85$8,670
Sep 19933612515.03$5,426
Aug 19933602515.66$5,638
Jul 19934922515.46$7,606
Jun 19935402016.79$9,067
May 19933641517.68$6,436
Apr 19933601518.05$6,498
Mar 19933661518.14$6,639
Feb 19933671517.90$6,569
Jan 19933681516.93$6,230

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.

Feb 2005 — as filed, then multipliedworked
Oil                  444 bbl  × $ 45.22 =    $20,078
Casinghead gas         0 Mcf  × $  6.31 =         $0

────────────────────────────────────────────────────
Month total                                  $20,078

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/9163 is the state's own key, not one this site invented.