ZIMMERMAN

Operated by PENDRAGON OIL CO. (P-5 651162) in the CHENEY MEMORIAL (3RD SMITHWICK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13555District 7BField 17431500NGPA filingOilCasinghead gasSaveExport
Value, all time
$189 k
Jan 1993 – May 2026
Value, last 12 filed months
$3 k
at the published price for each month
Months reported
401
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 3 leases and 4 wells, and the rule below applies to all of them.

Discovered
1977-03-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA1none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition1,635 bbl$130,476
Casinghead gasProduction17,085 Mcf$58,627
Total$189,103

702 Mcf of this lease's gas, across 27 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 (2)

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 32.4026, -98.9364. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.1 miles.

32.40261, -98.93639 · 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
50.0%
1 of 2 wells
With a plug date
50.0%
1 of 2 wells
Median depth
4,096 ft
2 wells filed one
Completion to plug
29.2 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
150.0%
A plug date is filed
150.0%
BothOn the schedule and plugged. Neither fact cancels the other.
150.0%
NeitherNo plug date, and not on the schedule.
150.0%

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 4,079 and 4,112 ft, median 4,096 ft, over the 2 wells that filed a depth.

Completions filed
Mar 1977 – Dec 1977
2 of 2 wells
Plug dates filed
May 2006
1 of 2 wells; 1 filed none

Last completion to plug: a median of 29.2 years across the 1 well that filed both dates, with the middle half between 29.2 years and 29.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-1333076734,112 ftDec 1977
42-1333055824,079 ftMar 1977May 2006Yes

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 (401)

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

401 months

May 2026034106.413.05$104
Apr 202603098.932.87$86
Mar 202603189.753.15$98
Feb 202602563.503.75$94
Jan 202603559.138.00$280
Dec 202505156.664.41$225
Nov 202507258.593.93$283
Oct 202508559.383.30$281
Sep 202508362.743.08$255
Aug 202508363.933.01$250
Jul 2025010166.743.32$335
Jun 202508866.483.13$275
May 2025011060.553.23$356
Apr 202509062.363.54$319
Mar 2025011267.704.27$478
Feb 202507370.884.34$317
Jan 202503974.324.28$167
Dec 202403268.993.12$100
Nov 202403169.052.20$68
Oct 202403571.372.28$80
Sep 202404469.612.36$104
Aug 202404675.632.06$95
Jul 202401879.932.15$39
Jun 202402078.082.63$53
May 202402478.812.20$53
Apr 202402684.451.66$43
Mar 202402180.301.55$32
Feb 202402076.091.78$36
Jan 202401773.023.30$56
Dec 202302371.262.61$60
Nov 202302577.892.81$70
Oct 202302585.443.09$77
Sep 202302389.042.74$63
Aug 202302180.522.67$56
Jul 202301974.852.64$50
Jun 202302068.962.26$45
May 202301770.622.23$38
Apr 202301578.122.24$34
Mar 202301972.852.39$45
Feb 202301275.112.47$30
Jan 202301476.533.39$47
Dec 202201776.415.73$97
Nov 202201785.005.65$96
Oct 202201987.185.86$111
Sep 202201884.888.16$147
Aug 202201794.529.13$155
Jul 2022020101.587.54$151
Jun 2022017115.097.98$136
May 2022015109.378.43$127
Apr 2022013104.226.84$89
Mar 2022015108.885.08$76
Feb 202201491.054.86$68
Jan 202201981.844.54$86
Dec 202102171.323.90$82
Nov 202101877.435.24$94
Oct 202102179.795.71$120
Sep 202101069.865.35$54
Aug 202101066.024.22$42
Jul 202101270.783.98$48
Jun 202101469.493.38$47
May 202101363.483.02$39
Apr 202101760.362.76$47
Mar 202101561.302.72$41
Feb 20210657.805.55$33
Jan 202101050.412.81$28
Dec 202001144.642.68$29
Nov 20200838.772.71$22
Oct 202001836.972.48$45
Sep 202002237.091.99$44
Aug 202002239.982.39$52
Jul 202002138.371.83$38
Jun 202001934.901.69$32
May 202002316.921.81$42
Apr 202001914.751.80$34
Mar 202002530.341.86$46
Feb 202002749.881.98$53
Jan 202003057.252.09$63
Dec 201903959.012.30$90
Nov 201904255.302.75$116
Oct 201905953.472.42$143
Sep 201903855.052.66$101
Aug 201903953.112.30$90
Jul 201904356.272.46$106
Jun 201904252.782.49$105
May 201904458.482.74$121
Apr 201905062.632.75$138
Mar 201905056.803.06$153
Feb 201904950.852.79$137
Jan 201904346.033.23$139
Dec 201804046.594.19$167
Nov 201802052.934.24$85
Oct 201803061.443.40$102
Sep 201803659.543.11$112
Aug 201803559.403.07$107
Jul 201803865.142.93$111
Jun 201803960.183.08$120
May 201804665.382.90$133
Apr 201804563.842.90$131
Mar 201804061.222.79$111
Feb 201804461.782.77$122
Jan 201805662.874.01$225
Dec 201706657.272.92$193
Nov 201708855.423.12$274
Oct 201709449.292.98$280
Sep 2017010147.523.09$312
Aug 2017010645.373.00$318
Jul 2017013743.873.09$423
Jun 201709242.493.09$284
May 201707645.373.26$248
Apr 201706447.933.21$206
Mar 201708546.772.98$254
Feb 201706050.452.95$177
Jan 201705949.413.42$202
Dec 201605248.763.72$194
Nov 201604942.492.64$130
Oct 201601246.193.09$37
Sep 20160941.553.10$28
Aug 201602941.442.92$85
Jul 201603441.622.92$99
Jun 201607045.352.69$188
May 201606142.521.99$121
Apr 201607236.561.99$143
Mar 201607033.011.79$126
Feb 201606226.472.06$128
Jan 201606027.352.36$142
Dec 201506132.362.00$122
Nov 201506438.792.17$139
Oct 201505943.552.43$143
Sep 201505442.992.76$149
Aug 201505840.162.87$167
Jul 201506748.152.95$197
Jun 201507756.152.88$222
May 201508955.212.96$263
Apr 201502349.822.71$62
Mar 201506942.892.93$202
Feb 201506744.662.98$199
Jan 201506143.433.10$189
Dec 201409554.693.59$341
Nov 2014010270.464.25$434
Oct 20147619978.303.90$6,727
Sep 2014020886.164.05$841
Aug 2014019989.394.04$803
Jul 2014016696.564.18$694
Jun 20148221498.164.74$9,063
May 2014023194.734.73$1,092
Apr 20148518295.944.81$9,030
Mar 2014015295.895.06$769
Feb 2014014297.406.19$879
Jan 20148821590.404.86$9,000
Dec 2013010191.824.35$440
Nov 2013010888.853.74$404
Oct 2013016797.423.78$631
Sep 20130142104.113.72$528
Aug 201385236104.253.52$9,693
Jul 20130225102.523.72$836
Jun 2013021594.403.93$846
May 2013709794.834.15$7,041
Apr 2013030993.964.28$1,323
Mar 20135135193.623.91$6,148
Feb 2013027891.233.42$951
Jan 20139428291.603.42$9,575
Dec 2012033386.773.42$1,139
Nov 2012029386.953.62$1,062
Oct 20129732489.383.40$9,771
Sep 2012017994.672.92$522
Aug 2012018192.662.91$526
Jul 2012025285.133.02$761
Jun 2012020979.822.52$526
May 2012021091.612.49$523
Apr 2012116292101.652.00$12,374
Mar 20120134105.052.22$298
Feb 2012150148101.102.57$15,545
Jan 2012012598.092.73$342
Dec 2011013296.873.24$428
Nov 2011013895.723.31$457
Oct 2011017784.983.65$646
Sep 2011013883.623.99$550
Aug 201115318583.404.15$13,528
Jul 2011016394.144.52$736
Jun 2011020992.904.64$970
May 2011020898.134.40$916
Apr 20110230105.964.33$997
Mar 2011024796.364.06$1,002
Feb 2011026185.644.18$1,091
Jan 2011029286.504.59$1,340
Dec 2010024485.734.35$1,061
Nov 2010014080.843.80$531
Oct 2010013978.103.51$488
Sep 20101727872.633.98$12,803
Aug 2010015573.684.42$685
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 2010026581.694.12$1,093
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 2009121061.133.46$7,397
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
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 20040043.245.28$0
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 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 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 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 19990010.381.90$0
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 19980011.242.24$0
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 19970017.742.95$0
Aug 19970017.862.55$0
Jul 19970017.582.25$0
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 19970023.483.54$0
Dec 19960023.32$0
Nov 19960021.97$0
Oct 19960023.31$0
Sep 19960022.22$0
Aug 19960020.26$0
Jul 19960019.55$0
Jun 19960018.73$0
May 19960019.43$0
Apr 19960021.51$0
Mar 19960019.38$0
Feb 19960016.98$0
Jan 19960017.07$0
Dec 19950017.19$0
Nov 19950016.00$0
Oct 19950015.43$0
Sep 19950016.18$0
Aug 19950015.92$0
Jul 19950015.24$0
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950116.44$0
Feb 19950116.58$0
Jan 19950115.92$0
Dec 19940115.03$0
Nov 19940115.90$0
Oct 19940115.58$0
Sep 1994101115.29$1,544
Aug 19940116.13$0
Jul 19940417.56$0
Jun 199402217.09$0
May 199404815.88$0
Apr 199403214.14$0
Mar 199403912.46$0
Feb 199402512.50$0
Jan 199405212.66$0
Dec 199302812.33$0
Nov 199304014.49$0
Oct 199302515.85$0
Sep 199304315.03$0
Aug 199304515.66$0
Jul 199305315.46$0
Jun 199304116.79$0
May 1993944517.68$1,662
Apr 199303218.05$0
Mar 199304418.14$0
Feb 199303117.90$0
Jan 199304516.93$0

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.

May 2026 — as filed, then multipliedworked
Oil                    0 bbl  × $106.41 =         $0
Casinghead gas        34 Mcf  × $  3.05 =       $104

────────────────────────────────────────────────────
Month total                                     $104

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. 7B/O/13555 is the state's own key, not one this site invented.