DEAN, C. S.

Operated by WALSH PETROLEUM, INC. (P-5 894720) in the LEVELLAND field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 66409District 8AField 53411001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$874 k
Jan 1993 – Mar 2011
Value, last 12 filed months
$23 k
at the published price for each month
Months reported
219
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 568 leases and 7,034 wells, and the rule below applies to all of them.

Discovered
1945-01-17
as the register files it
Field class
Oil
the register's own label
Between wells
880 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 21.25 acres.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: ASSOCIATED GAS FIELD LEVELLAND (SAN ANDRES)

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
OilDisposition18,000 bbl$565,844
Casinghead gasProduction108,948 Mcf$308,452
Total$874,297

37,669 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 33.5404, -102.7788. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

33.54039, -102.77877 · 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
5,149 ft
1 wells filed one
Completion to plug
21.0 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 5,149 ft.

Completions filed
Oct 1989
1 of 1 wells
Plug dates filed
Oct 2010
1 of 1 wells

Last completion to plug: a median of 21.0 years across the 1 well that filed both dates, with the middle half between 21.0 years and 21.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-079311991R5,149 ftOct 1989Oct 2010Yes

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 (219)

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

219 months

Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20111086.504.59$87
Dec 201019085.734.35$1,629
Nov 201018080.843.80$1,455
Oct 2010177978.103.51$1,605
Sep 20102811572.633.98$2,491
Aug 2010198573.684.42$1,776
Jul 2010469572.554.74$3,787
Jun 20102211170.364.91$2,093
May 20102712571.124.24$2,450
Apr 20106312381.694.12$5,654
Mar 2010019978.394.39$873
Feb 2010016173.585.44$876
Jan 201007574.365.96$447
Dec 2009257971.445.48$2,219
Nov 20092539974.593.75$3,362
Oct 20094543972.544.11$5,069
Sep 2009288765.543.06$2,102
Aug 20095717767.423.22$4,413
Jul 20095714861.133.46$3,997
Jun 20095815866.163.90$4,453
May 20095616654.743.93$3,717
Apr 20095814146.773.59$3,219
Mar 20095813642.144.06$2,996
Feb 20095912232.814.63$2,501
Jan 20095714235.865.37$2,807
Dec 20085815137.105.98$3,054
Nov 20085814855.496.86$4,234
Oct 20082916375.246.92$3,310
Sep 200857135101.767.88$6,864
Aug 200858168114.228.48$8,050
Jul 200863169131.0811.39$10,183
Jun 200864160131.3313.03$10,490
May 200862185123.1711.57$9,778
Apr 200889175110.3110.45$11,647
Mar 200857185101.909.66$7,596
Feb 20085717792.538.77$6,827
Jan 20088617490.388.21$9,200
Dec 20075818088.337.30$6,437
Nov 20078517291.677.29$9,046
Oct 20075617382.856.92$5,837
Sep 20075718875.846.24$5,497
Aug 20075319569.066.39$4,906
Jul 20075218470.906.39$4,862
Jun 20077818062.007.55$6,195
May 20074918858.747.85$4,353
Apr 20079917459.617.81$7,259
Mar 20074917856.927.30$4,089
Feb 20075016455.108.22$4,102
Jan 20077218050.306.73$4,832
Dec 20064319056.656.92$3,750
Nov 20066419154.207.62$4,924
Oct 20064225054.906.01$3,809
Sep 20068722560.085.04$6,360
Aug 20064326068.717.34$4,863
Jul 20066526869.376.34$6,209
Jun 20069027266.286.38$7,702
May 200612927866.016.42$10,301
Apr 20064116164.397.36$3,825
Mar 20064220456.707.08$3,826
Feb 20067319757.597.75$5,731
Jan 20066939060.598.93$7,665
Dec 20053321354.9413.42$4,671
Nov 20055123154.6910.59$5,235
Oct 20056926558.3413.80$7,681
Sep 200512126861.4512.08$10,673
Aug 20053730061.519.80$5,215
Jul 20055530855.697.84$5,479
Jun 20056632452.337.38$5,845
May 200510434845.226.65$7,017
Apr 200515844249.207.36$11,027
Mar 200524744650.377.15$15,632
Feb 2005122745.226.31$1,478
Jan 20055222243.166.32$3,648
Dec 20047936439.866.75$5,606
Nov 2004039145.286.33$2,475
Oct 20048541849.706.52$6,948
Sep 20042733243.245.28$2,922
Aug 20048236442.375.55$5,495
Jul 20045436838.286.08$4,306
Jun 20044942036.106.43$4,471
May 20046649037.486.49$5,656
Apr 20046653934.475.86$5,433
Mar 200433159134.365.53$14,641
Feb 20045547332.455.51$4,391
Jan 20044943432.036.30$4,304
Dec 200313522930.266.30$5,528
Nov 20030028.804.60$0
Oct 2003189028.174.76$5,324
Sep 200302726.314.75$128
Aug 20031778729.765.13$5,714
Jul 2003055029.415.17$2,844
Jun 200318057928.565.98$8,605
May 2003062126.595.97$3,709
Apr 2003063226.675.41$3,417
Mar 200316767431.146.10$9,309
Feb 2003062333.487.93$4,938
Jan 200316171030.315.58$8,843
Dec 2002052526.914.85$2,548
Nov 2002257224.664.14$2,416
Oct 200215963426.464.23$6,888
Sep 200216364827.443.64$6,828
Aug 2002066225.963.16$2,095
Jul 200211665924.583.06$4,869
Jun 2002064023.733.34$2,136
May 200216864924.663.58$6,469
Apr 2002061323.653.51$2,153
Mar 200218691522.003.10$6,931
Feb 2002055318.222.38$1,314
Jan 200216261917.172.38$4,252
Dec 2001061016.932.36$1,442
Nov 200117560318.072.41$4,613
Oct 2001060619.782.53$1,533
Sep 200117560324.262.25$5,603
Aug 2001066624.873.05$2,033
Jul 200116069923.933.20$6,064
Jun 2001074324.563.82$2,841
May 200115366325.524.31$6,760
Apr 2001063824.685.34$3,404
Mar 2001063524.545.38$3,414
Feb 200116657727.755.77$7,934
Jan 2001063027.478.40$5,291
Dec 200016668526.889.12$10,711
Nov 200017252932.215.66$8,533
Oct 2000065231.235.15$3,355
Sep 2000066331.875.19$3,439
Aug 200016270429.644.54$7,998
Jul 200017472728.534.09$7,937
Jun 2000079929.304.40$3,513
May 200019044427.263.68$6,813
Apr 2000066424.513.12$2,069
Mar 200019968428.422.86$7,612
Feb 2000062927.622.73$1,715
Jan 2000066825.272.48$1,657
Dec 199918366224.282.42$6,048
Nov 1999067323.192.43$1,638
Oct 199917270820.982.80$5,594
Sep 1999070521.752.62$1,846
Aug 199918068619.262.88$5,439
Jul 199918667417.892.37$4,927
Jun 1999069815.942.36$1,649
May 1999069315.792.32$1,608
Apr 199917057215.102.21$3,830
Mar 1999063512.471.84$1,167
Feb 19991966239.981.82$3,089
Jan 1999068410.381.90$1,300
Dec 19981756069.201.77$2,685
Nov 1998069710.892.19$1,523
Oct 199817845212.421.97$3,101
Sep 1998066612.592.08$1,387
Aug 199816665811.301.91$3,131
Jul 1998069111.742.24$1,546
Jun 199817474411.242.24$3,620
May 199818171712.622.21$3,866
Apr 1998052113.042.51$1,305
Mar 199817769912.802.31$3,880
Feb 1998062313.952.30$1,432
Jan 199817769414.702.15$4,097
Dec 1997068116.322.41$1,642
Nov 199717461918.193.09$5,077
Oct 1997067019.253.15$2,110
Sep 199718667317.742.95$5,288
Aug 1997073017.862.55$1,865
Jul 199715673017.582.25$4,383
Jun 199718073317.242.26$4,758
May 1997071618.972.31$1,653
Apr 199718170017.882.08$4,694
Mar 1997072818.951.94$1,412
Feb 199718466920.492.21$5,246
Jan 1997073523.483.54$2,602
Dec 199618776023.32$4,361
Nov 199618673721.97$4,086
Oct 1996077723.31$0
Sep 199618370922.22$4,066
Aug 1996074420.26$0
Jul 199618373819.55$3,578
Jun 1996084218.73$0
May 199617182719.43$3,323
Apr 199616474521.51$3,528
Mar 1996072219.38$0
Feb 199617368716.98$2,938
Jan 1996072517.07$0
Dec 199517175317.19$2,939
Nov 1995074316.00$0
Oct 199516976215.43$2,608
Sep 199518477216.18$2,977
Aug 1995077315.92$0
Jul 199516780515.24$2,545
Jun 199517579716.41$2,872
May 1995080617.56$0
Apr 199516477417.73$2,908
Mar 199515676216.44$2,565
Feb 1995067316.58$0
Jan 199516677715.92$2,643
Dec 199418377315.03$2,750
Nov 1994084215.90$0
Oct 199417271515.58$2,680
Sep 199417879415.29$2,722
Aug 1994083416.13$0
Jul 199418783617.56$3,284
Jun 19946983817.09$1,179
May 199411381415.88$1,794
Apr 199413876914.14$1,951
Mar 199413680812.46$1,695
Feb 199416671712.50$2,075
Jan 199418980812.66$2,393
Dec 1993083212.33$0
Nov 199316679814.49$2,405
Oct 199318485515.85$2,916
Sep 199318183315.03$2,720
Aug 1993087615.66$0
Jul 199317285515.46$2,659
Jun 199317494116.79$2,921
May 199317975617.68$3,165
Apr 1993084518.05$0
Mar 199316974718.14$3,066
Feb 199317776317.90$3,168
Jan 199317181016.93$2,895

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.

Jan 2011 — as filed, then multipliedworked
Oil                    1 bbl  × $ 86.50 =        $87
Casinghead gas         0 Mcf  × $  4.59 =         $0

────────────────────────────────────────────────────
Month total                                      $87

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. 8A/O/66409 is the state's own key, not one this site invented.