WALLS, H.J.

Operated by CENIZA PETROLEUM, INC. (P-5 141023) in the PEARSALL (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12414District 01Field 69981125OilCasinghead gasSaveExport
Value, all time
$160 k
Jan 1993 – Aug 2003
Value, last 12 filed months
$0
at the published price for each month
Months reported
128
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 1,992 leases and 3,388 wells, and the rule below applies to all of them.

Discovered
1936-12-28
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 2025-06-17.

The Commission's schedule remark for this field reads: LEASE PLAT. PRORATION PLAT IS NOT REQUIRED.

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
OilDisposition9,745 bbl$160,069
Casinghead gasProduction4,281 Mcf$0
Total$160,069

4,281 Mcf of this lease's gas, across 21 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 28.6848, -99.2664. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.68475, -99.26639 · 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
10,122 ft
1 wells filed one
Completion to plug
8.8 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 10,122 ft.

Completions filed
Apr 1993
1 of 1 wells
Plug dates filed
Feb 2002
1 of 1 wells

Last completion to plug: a median of 8.8 years across the 1 well that filed both dates, with the middle half between 8.8 years and 8.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-16332621110,122 ftApr 1993Feb 2002Yes

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 (128)

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

128 months

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 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 2002104018.222.38$1,895
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 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 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19993010.381.90$31
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 19980011.742.24$0
Jun 199854011.242.24$607
May 19980012.622.21$0
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 19980013.952.30$0
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 19970019.253.15$0
Sep 1997172017.742.95$3,051
Aug 19970017.862.55$0
Jul 19970017.582.25$0
Jun 1997157017.242.26$2,707
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 1997162018.951.94$3,070
Feb 19970020.492.21$0
Jan 19970023.483.54$0
Dec 1996157023.32$3,661
Nov 19960021.97$0
Oct 1996160023.31$3,730
Sep 19960022.22$0
Aug 19960020.26$0
Jul 1996159019.55$3,108
Jun 19960018.73$0
May 1996158019.43$3,070
Apr 19960021.51$0
Mar 1996158019.38$3,062
Feb 19960016.98$0
Jan 19960017.07$0
Dec 1995163017.19$2,802
Nov 19950016.00$0
Oct 1995158015.43$2,438
Sep 19950016.18$0
Aug 1995102015.92$1,624
Jul 1995162015.24$2,469
Jun 19950016.41$0
May 1995154017.56$2,704
Apr 1995159017.73$2,819
Mar 1995163016.44$2,680
Feb 1995158016.58$2,620
Jan 1995151015.92$2,404
Dec 1994151015.03$2,270
Nov 1994312015.90$4,961
Oct 1994158015.58$2,462
Sep 1994179115.29$2,737
Aug 1994151116.13$2,436
Jul 1994160117.56$2,810
Jun 1994143117.09$2,444
May 1994162115.88$2,573
Apr 1994168114.14$2,376
Mar 1994349112.46$4,349
Feb 1994165112.50$2,063
Jan 1994154112.66$1,950
Dec 1993312112.33$3,847
Nov 1993325114.49$4,709
Oct 1993331115.85$5,246
Sep 1993336115.03$5,050
Aug 199332637215.66$5,105
Jul 199350048615.46$7,730
Jun 199335168016.79$5,893
May 19931,02447917.68$18,104
Apr 19931704618.05$3,069
Mar 1993284418.14$36
Feb 199334762717.90$6,211
Jan 199365573416.93$11,089

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 2002 — as filed, then multipliedworked
Oil                  104 bbl  × $ 18.22 =     $1,895
Casinghead gas         0 Mcf  × $  2.38 =         $0

────────────────────────────────────────────────────
Month total                                   $1,895

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. 01/O/12414 is the state's own key, not one this site invented.