SEALY SMITH FOUNDATION

Operated by OCCIDENTAL PERMIAN LTD. (P-5 617544) in the MONAHANS (ELLENBURGER) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4404District 08Field 62415332Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$746 k
Jan 1993 – Mar 2001
Value, last 12 filed months
$0
at the published price for each month
Months reported
99
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 6 wells, and the rule below applies to all of them.

Discovered
1942-08-07
as the register files it
Field class
Oil
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 10 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: (WOLF.-ELLEN.,CONS.) EFFECTIVE 1/09/2001.

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
OilDisposition43,509 bbl$713,857
Casinghead gasProduction98,349 Mcf$31,993
Total$745,850

83,871 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 (6)

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 31.6321, -102.8612. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.1 miles.

31.63186, -102.86087 · 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%
6 of 6 wells
With a plug date
16.7%
1 of 6 wells
Median depth
10,370 ft
6 wells filed one
Completion to plug
14.6 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
6100.0%
A plug date is filed
116.7%
BothOn the schedule and plugged. Neither fact cancels the other.
116.7%
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

Between 10,185 and 11,286 ft, median 10,370 ft, over the 6 wells that filed a depth.

Completions filed
Mar 1981 – Dec 2025
6 of 6 wells
Plug dates filed
Sep 2012
1 of 6 wells; 5 filed none

Last completion to plug: a median of 14.6 years across the 1 well that filed both dates, with the middle half between 14.6 years and 14.6 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

6 wells

42-475040761710,312 ftDec 2025Yes
42-475039695911,286 ftSep 2018Yes
42-47534556100210,185 ftJun 2018Yes
42-47504095110,545 ftFeb 1998Sep 2012Yes
42-475040821010,334 ftSep 1997Yes
42-47504088410,406 ftMar 1981Yes

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 (99)

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

99 months

Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 20000031.875.19$0
Aug 20000029.644.54$0
Jul 20000028.534.09$0
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 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19991015.942.36$16
May 1999161415.792.32$285
Apr 199919525115.102.21$3,499
Mar 199947642412.471.84$6,715
Feb 19993944129.981.82$4,681
Jan 199943536110.381.90$5,201
Dec 19986032499.201.77$5,989
Nov 199863271910.892.19$8,454
Oct 19986321,04312.421.97$9,903
Sep 19988431,36512.592.08$13,456
Aug 19988802,19411.301.91$14,129
Jul 19987571,41811.742.24$12,060
Jun 19980011.242.24$0
May 19980012.622.21$0
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 199812013.952.30$167
Jan 199831974714.702.15$6,299
Dec 19972571,03816.322.41$6,697
Nov 199739629318.193.09$8,108
Oct 199748721719.253.15$10,058
Sep 199736917217.742.95$7,054
Aug 199736658717.862.55$8,036
Jul 199740148217.582.25$8,133
Jun 199739516517.242.26$7,182
May 199751328318.972.31$10,385
Apr 199749759317.882.08$10,121
Mar 199752455118.951.94$10,998
Feb 199746128620.492.21$10,077
Jan 199742761423.483.54$12,199
Dec 199641157723.32$9,585
Nov 19966531,26021.97$14,346
Oct 19967192,00323.31$16,760
Sep 19966861,57522.22$15,243
Aug 19966761,15220.26$13,696
Jul 19965151,89619.55$10,068
Jun 19966022,82618.73$11,275
May 19967593,79119.43$14,747
Apr 199650038821.51$10,755
Mar 199677655619.38$15,039
Feb 199679568916.98$13,499
Jan 19961,1131,48217.07$18,999
Dec 19951,0252,08217.19$17,620
Nov 19957346,30116.00$11,744
Oct 19955651,90315.43$8,718
Sep 19955801,99416.18$9,384
Aug 19957222,28615.92$11,494
Jul 199534694215.24$5,273
Jun 199527728116.41$4,546
May 199567693417.56$11,871
Apr 199582969617.73$14,698
Mar 199567294816.44$11,048
Feb 199546882316.58$7,759
Jan 19951,0491,55615.92$16,700
Dec 19941,0571,85615.03$15,887
Nov 19948721,30315.90$13,865
Oct 19947042,23115.58$10,968
Sep 19942431,08815.29$3,715
Aug 19943711,90516.13$5,984
Jul 19948922,39017.56$15,664
Jun 19941,1672,75217.09$19,944
May 19941,1713,23515.88$18,595
Apr 19941,1123,02914.14$15,724
Mar 19945483,03012.46$6,828
Feb 19944171,44912.50$5,213
Jan 19943603,66112.66$4,558
Dec 19935252,64412.33$6,473
Nov 19936853,17814.49$9,926
Oct 19931,3781,36415.85$21,841
Sep 19936981,36415.03$10,491
Aug 19936231,27415.66$9,756
Jul 19936481,32915.46$10,018
Jun 199330382116.79$5,087
May 199336075717.68$6,365
Apr 199315562818.05$2,798
Mar 199344674618.14$8,090
Feb 19936561,35017.90$11,742
Jan 19936821,54616.93$11,546

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.

Jun 1999 — as filed, then multipliedworked
Oil                    1 bbl  × $ 15.94 =        $16
Casinghead gas         0 Mcf  × $  2.36 =         $0

────────────────────────────────────────────────────
Month total                                      $16

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. 08/O/4404 is the state's own key, not one this site invented.