CHALK -A-

Operated by EXCEL ENERGY CO. (P-5 256873) in the HOWARD-GLASSCOCK (GLORIETA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 31394District 08Field 42971332Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$6.9 M
Jan 1993 – Mar 2012
Value, last 12 filed months
$545 k
at the published price for each month
Months reported
231
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 131 leases and 850 wells, and the rule below applies to all of them.

Discovered
1925-12-31
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: 11/22/11.

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
OilDisposition188,554 bbl$6,871,329
Casinghead gasProduction152 Mcf$427
Total$6,871,756

48 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 (8)

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 32.1328, -101.2454. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.13277, -101.24518 · 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%
8 of 8 wells
With a plug date
12.5%
1 of 8 wells
Median depth
3,050 ft
7 wells filed one
Completion to plug
55.1 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
8100.0%
A plug date is filed
112.5%
BothOn the schedule and plugged. Neither fact cancels the other.
112.5%
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

Total depth in feet, 7 of 8 wells. Median 3,050 ft, with the middle half between 2,280 and 3,070 ft; the shallowest is 1,608 ft and the deepest 3,090 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 6 of 8 wells, Sep 1959 – Jul 2008. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Sep 1959 – Jul 2008
6 of 8 wells; 2 filed none
Plug dates filed
Sep 2022
1 of 8 wells; 7 filed none

Last completion to plug: a median of 55.1 years across the 1 well that filed both dates, with the middle half between 55.1 years and 55.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

8 wells

42-227043302Yes
42-2273003671,608 ftYes
42-2270247933,050 ftJul 2008Yes
42-2273407993,090 ftJan 1987Yes
42-2273406283,090 ftSep 1986Yes
42-2270247853,050 ftApr 1968Yes
42-2270248162,310 ftAug 1967Sep 2022Yes
42-2270016312,250 ftSep 1959Yes

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 (231)

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

231 months

Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 2011890095.723.31$85,191
Oct 2011555084.983.65$47,164
Sep 2011738083.623.99$61,712
Aug 2011737083.404.15$61,466
Jul 2011735094.144.52$69,193
Jun 2011737092.904.64$68,467
May 2011741098.134.40$72,714
Apr 20117470105.964.33$79,152
Mar 2011738096.364.06$71,114
Feb 2011562085.644.18$48,130
Jan 2011561086.504.59$48,527
Dec 2010737085.734.35$63,183
Nov 2010743080.843.80$60,064
Oct 2010742078.103.51$57,950
Sep 2010734072.633.98$53,310
Aug 2010738073.684.42$54,376
Jul 2010913072.554.74$66,238
Jun 2010738070.364.91$51,926
May 2010739071.124.24$52,558
Apr 2010742081.694.12$60,614
Mar 2010746078.394.39$58,479
Feb 2010741073.585.44$54,523
Jan 2010561074.365.96$41,716
Dec 2009752071.445.48$53,723
Nov 2009560074.593.75$41,770
Oct 2009745072.544.11$54,042
Sep 2009546065.543.06$35,785
Aug 2009733067.423.22$49,419
Jul 2009736061.133.46$44,992
Jun 2009550066.163.90$36,388
May 2009737054.743.93$40,343
Apr 2009721046.773.59$33,721
Mar 2009744042.144.06$31,352
Feb 2009751032.814.63$24,640
Jan 2009562035.865.37$20,153
Dec 2008738037.105.98$27,380
Nov 2008549055.496.86$30,464
Oct 2008744075.246.92$55,979
Sep 20087400101.767.88$75,302
Aug 20087380114.228.48$84,294
Jul 20085450131.0811.39$71,439
Jun 20085740131.3313.03$75,383
May 20087300123.1711.57$89,914
Apr 20085530110.3110.45$61,001
Mar 20087350101.909.66$74,897
Feb 2008545092.538.77$50,429
Jan 2008691090.388.21$62,453
Dec 2007748088.337.30$66,071
Nov 2007742091.677.29$68,019
Oct 2007550082.856.92$45,568
Sep 2007718075.846.24$54,453
Aug 2007733069.066.39$50,621
Jul 2007717070.906.39$50,835
Jun 2007544062.007.55$33,728
May 2007709058.747.85$41,647
Apr 2007706059.617.81$42,085
Mar 2007543056.927.30$30,908
Feb 2007745055.108.22$41,050
Jan 2007561050.306.73$28,218
Dec 2006722056.656.92$40,901
Nov 2006547054.207.62$29,647
Oct 2006653054.906.01$35,850
Sep 2006734060.085.04$44,099
Aug 2006689068.717.34$47,341
Jul 2006670069.376.34$46,478
Jun 2006717066.286.38$47,523
May 2006706066.016.42$46,603
Apr 2006658064.397.36$42,369
Mar 2006709056.707.08$40,200
Feb 2006632057.597.75$36,397
Jan 2006695060.598.93$42,110
Dec 2005733054.9413.42$40,271
Nov 2005692054.6910.59$37,845
Oct 2005697058.3413.80$40,663
Sep 2005723061.4512.08$44,428
Aug 2005741161.519.80$45,589
Jul 2005706155.697.84$39,325
Jun 2005724152.337.38$37,894
May 2005669145.226.65$30,259
Apr 2005709149.207.36$34,890
Mar 2005729150.377.15$36,727
Feb 2005713145.226.31$32,248
Jan 2005733143.166.32$31,643
Dec 2004688139.866.75$27,430
Nov 2004833145.286.33$37,725
Oct 2004729149.706.52$36,238
Sep 2004729143.245.28$31,527
Aug 2004724142.375.55$30,681
Jul 2004696138.286.08$26,649
Jun 2004724136.106.43$26,143
May 2004816137.486.49$30,590
Apr 2004733134.475.86$25,272
Mar 2004708134.365.53$24,332
Feb 2004894132.455.51$29,016
Jan 2004700132.036.30$22,427
Dec 2003727130.266.30$22,005
Nov 2003758128.804.60$21,835
Oct 2003732128.174.76$20,625
Sep 2003821126.314.75$21,605
Aug 2003705129.765.13$20,986
Jul 2003895129.415.17$26,327
Jun 2003636128.565.98$18,170
May 2003729126.595.97$19,390
Apr 2003850126.675.41$22,675
Mar 2003739131.146.10$23,019
Feb 2003739133.487.93$24,750
Jan 2003746130.315.58$22,617
Dec 2002898126.914.85$24,170
Nov 2002710124.664.14$17,513
Oct 2002882126.464.23$23,342
Sep 2002701127.443.64$19,239
Aug 2002729125.963.16$18,928
Jul 2002831124.583.06$20,429
Jun 2002712123.733.34$16,899
May 2002731124.663.58$18,030
Apr 2002875123.653.51$20,697
Mar 2002717122.003.10$15,777
Feb 2002720118.222.38$13,121
Jan 2002890117.172.38$15,284
Dec 2001732116.932.36$12,395
Nov 2001742118.072.41$13,410
Oct 2001928119.782.53$18,358
Sep 2001737124.262.25$17,882
Aug 2001738124.873.05$18,357
Jul 2001895123.933.20$21,421
Jun 2001739124.563.82$18,154
May 2001912125.524.31$23,279
Apr 2001926124.685.34$22,859
Mar 2001933124.545.38$22,901
Feb 2001742127.755.77$20,596
Jan 2001746127.478.40$20,501
Dec 2000931126.889.12$25,034
Nov 2000918132.215.66$29,574
Oct 2000925131.235.15$28,893
Sep 2000917131.875.19$29,230
Aug 2000913129.644.54$27,066
Jul 2000922128.534.09$26,309
Jun 2000712129.304.40$20,866
May 2000921127.263.68$25,110
Apr 2000913124.513.12$22,381
Mar 2000741128.422.86$21,062
Feb 2000744127.622.73$20,552
Jan 2000918125.272.48$23,200
Dec 1999745124.282.42$18,091
Nov 1999902123.192.43$20,920
Oct 1999738120.982.80$15,486
Sep 1999872121.752.62$18,969
Aug 1999915119.262.88$17,626
Jul 1999876117.892.37$15,674
Jun 1999918115.942.36$14,635
May 1999920115.792.32$14,529
Apr 1999926115.102.21$13,985
Mar 1999909112.471.84$11,337
Feb 199992919.981.82$9,273
Jan 1999317110.381.90$3,292
Dec 199892919.201.77$8,549
Nov 1998737110.892.19$8,028
Oct 19981,102112.421.97$13,689
Sep 1998922112.592.08$11,610
Aug 1998909111.301.91$10,274
Jul 1998898111.742.24$10,545
Jun 1998903111.242.24$10,152
May 1998875112.622.21$11,045
Apr 1998803113.042.51$10,474
Mar 19981,008112.802.31$12,905
Feb 1998704113.952.30$9,823
Jan 1998898114.702.15$13,203
Dec 19971,069116.322.41$17,448
Nov 1997886118.193.09$16,119
Oct 1997896119.253.15$17,251
Sep 19971,050117.742.95$18,630
Aug 1997881117.862.55$15,737
Jul 19971,057117.582.25$18,584
Jun 1997872117.242.26$15,036
May 19971,056118.972.31$20,035
Apr 1997888117.882.08$15,880
Mar 19971,038118.951.94$19,672
Feb 1997869120.492.21$17,808
Jan 19971,050123.483.54$24,658
Dec 19961,056123.32$24,626
Nov 1996899121.97$19,751
Oct 19961,057123.31$24,639
Sep 19961,066122.22$23,687
Aug 19961,068120.26$21,638
Jul 19961,066119.55$20,840
Jun 19961,067118.73$19,985
May 19961,068119.43$20,751
Apr 19961,076121.51$23,145
Mar 1996902119.38$17,481
Feb 19961,080116.98$18,338
Jan 1996901117.07$15,380
Dec 19951,066117.19$18,325
Nov 1995895116.00$14,320
Oct 19951,077115.43$16,618
Sep 1995894116.18$14,465
Aug 1995893115.92$14,217
Jul 19951,070115.24$16,307
Jun 1995894116.41$14,671
May 1995887117.56$15,576
Apr 19951,071117.73$18,989
Mar 1995902116.44$14,829
Feb 19951,077116.58$17,857
Jan 1995914115.92$14,551
Dec 19941,085115.03$16,308
Nov 19941,084115.90$17,236
Oct 19941,079115.58$16,811
Sep 19941,074115.29$16,421
Aug 19941,074116.13$17,324
Jul 19941,062117.56$18,649
Jun 19941,068117.09$18,252
May 19941,080115.88$17,150
Apr 19941,084114.14$15,328
Mar 19941,083112.46$13,494
Feb 19941,090112.50$13,625
Jan 19941,090112.66$13,799
Dec 19931,090112.33$13,440
Nov 19931,088114.49$15,765
Oct 19931,263115.85$20,019
Sep 19931,255115.03$18,863
Aug 19931,068115.66$16,725
Jul 19931,231115.46$19,031
Jun 19931,254116.79$21,055
May 19931,246117.68$22,029
Apr 19931,266118.05$22,851
Mar 19931,247118.14$22,621
Feb 19931,090117.90$19,511
Jan 19931,247116.93$21,112

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.

Nov 2011 — as filed, then multipliedworked
Oil                  890 bbl  × $ 95.72 =    $85,191
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                  $85,191

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/31394 is the state's own key, not one this site invented.