SHIRK, J.H. ESTATE

Operated by ENDEAVOR ENERGY RESOURCES L.P. (P-5 251726) in the KING MOUNTAIN, E. (WOLFCAMP) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13628District 7CField 49414666OilCasinghead gasSaveExport
Value, all time
$232 k
Jun 1994 – Aug 2006
Value, last 12 filed months
$8 k
at the published price for each month
Months reported
147
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
1965-03-15
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
OilDisposition8,353 bbl$153,607
Casinghead gasProduction89,993 Mcf$78,538
Total$232,145

56,892 Mcf of this lease's gas, across 31 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 31.2750, -102.1652. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.27501, -102.16516 · 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
9,592 ft
1 wells filed one
Completion to plug
6.8 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 9,592 ft.

Completions filed
Jun 1994
1 of 1 wells
Plug dates filed
Mar 2001
1 of 1 wells

Last completion to plug: a median of 6.8 years across the 1 well that filed both dates, with the middle half between 6.8 years and 6.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-4613214519,592 ftJun 1994Mar 2001Yes

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 (147)

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

147 months

Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 2006127064.397.36$8,178
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 2004126043.245.28$5,448
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 2002158024.583.06$3,884
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 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
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 2000032124.513.12$1,000
Mar 2000034328.422.86$981
Feb 2000032227.622.73$878
Jan 2000034825.272.48$863
Dec 1999047824.282.42$1,159
Nov 1999042523.192.43$1,034
Oct 1999047220.982.80$1,323
Sep 1999031621.752.62$828
Aug 199936210919.262.88$7,286
Jul 1999026417.892.37$626
Jun 1999060715.942.36$1,434
May 1999068715.792.32$1,595
Apr 1999069415.102.21$1,532
Mar 1999073912.471.84$1,359
Feb 199907059.981.82$1,282
Jan 19995584310.381.90$2,173
Dec 199808839.201.77$1,566
Nov 1998090010.892.19$1,967
Oct 1998092612.421.97$1,823
Sep 1998095612.592.08$1,991
Aug 1998098011.301.91$1,869
Jul 199801,01311.742.24$2,266
Jun 1998094911.242.24$2,123
May 199801,02112.622.21$2,253
Apr 199818699313.042.51$4,913
Mar 199801,01812.802.31$2,351
Feb 1998088213.952.30$2,028
Jan 1998081914.702.15$1,765
Dec 19971781,09616.322.41$5,548
Nov 199701,09218.193.09$3,372
Oct 199701,14519.253.15$3,607
Sep 199701,11117.742.95$3,283
Aug 19971501,20017.862.55$5,745
Jul 199701,20017.582.25$2,696
Jun 19971791,10017.242.26$5,569
May 199701,20018.972.31$2,770
Apr 199701,08317.882.08$2,256
Mar 19971801,20018.951.94$5,738
Feb 199701,26120.492.21$2,782
Jan 19971821,40023.483.54$9,229
Dec 199601,00023.32$0
Nov 199601,20021.97$0
Oct 19961861,30023.31$4,336
Sep 199601,40022.22$0
Aug 199601,50020.26$0
Jul 19961891,60019.55$3,695
Jun 199601,60618.73$0
May 19961921,65919.43$3,731
Apr 199601,80021.51$0
Mar 19961861,50019.38$3,605
Feb 199601,40016.98$0
Jan 19961831,60017.07$3,124
Dec 199501,73917.19$0
Nov 19951831,60216.00$2,928
Oct 19951811,75415.43$2,793
Sep 199501,78016.18$0
Aug 19951631,95315.92$2,595
Jul 19951851,90215.24$2,819
Jun 19951851,80416.41$3,036
May 199502,10817.56$0
Apr 19951652,47317.73$2,925
Mar 19951772,46816.44$2,910
Feb 19951861,96016.58$3,084
Jan 19951862,30315.92$2,961
Dec 19943812,20015.03$5,726
Nov 19943732,96015.90$5,931
Oct 19941902,95015.58$2,960
Sep 19943612,15715.29$5,520
Aug 19943691,40016.13$5,952
Jul 19941,5092,30017.56$26,498
Jun 19947401,51417.09$12,647

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 2006 — as filed, then multipliedworked
Oil                  127 bbl  × $ 64.39 =     $8,178
Casinghead gas         0 Mcf  × $  7.36 =         $0

────────────────────────────────────────────────────
Month total                                   $8,178

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. 7C/O/13628 is the state's own key, not one this site invented.