THORNBERRY

Operated by AZTEC ENERGY, LLC (P-5 39688) in the CLAY COUNTY REGULAR field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18819District 09Field 18707001OilCasinghead gasSaveExport
Value, all time
$419 k
Jan 1993 – May 2026
Value, last 12 filed months
$11 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 615 leases and 2,793 wells, and the rule below applies to all of them.

Discovered
1902-12-31
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

The Commission's schedule remark for this field reads: ENTITY FOR DENSITY APPROVED 3/17/98

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
OilDisposition11,840 bbl$419,448
Casinghead gasProduction45 Mcf$0
Total$419,448

45 Mcf of this lease's gas, across 45 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 (16)

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 34.0269, -98.3743. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

34.02698, -98.37467 · 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
31.3%
5 of 16 wells
With a plug date
31.3%
5 of 16 wells
Median depth
631 ft
11 wells filed one
Completion to plug
11.7 years
median over 4 wells

What the state filed about each well

On the RRC proration schedule
531.3%
A plug date is filed
531.3%
BothOn the schedule and plugged. Neither fact cancels the other.
531.3%
NeitherNo plug date, and not on the schedule.
1168.8%

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, 11 of 16 wells. Median 631 ft, with the middle half between 319 and 1,146 ft; the shallowest is 300 ft and the deepest 1,160 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, 15 of 16 wells, Apr 1978 – Jun 1995. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Apr 1978 – Jun 1995
15 of 16 wells; 1 filed none
Plug dates filed
Jun 1990 – Jul 2020
5 of 16 wells; 11 filed none

Last completion to plug: a median of 11.7 years across the 4 wells that filed both dates, with the middle half between 11.5 years and 12.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

16 wells

42-077313059727 ftJul 2020Yes
42-0773143511304 ftJun 1995Feb 2007Yes
42-07734039171,158 ftJul 1986
42-07732942161,160 ftOct 1985
42-077311272445 ftJun 1985Dec 1998Yes
42-0773108811,136 ftJun 1985
42-0773143314319 ftAug 1979Apr 1991Yes
42-0773143215300 ftAug 1979
42-0773143412319 ftAug 1979
42-077311677631 ftJun 1979Jun 1990Yes
42-07731304101,155 ftDec 1978
42-077311688Dec 1978
42-077311655Nov 1978
42-077311666Sep 1978
42-077311644Sep 1978
42-077311253Apr 1978

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 202600106.413.05$0
Apr 20260098.932.87$0
Mar 202669089.753.15$6,193
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 202573062.743.08$4,580
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 202572070.884.34$5,103
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 202467075.632.06$5,067
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 202332077.892.81$2,492
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 2022640104.226.84$6,670
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 2021105079.795.71$8,378
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 202097044.642.68$4,330
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 202037030.341.86$1,123
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 201946053.472.42$2,460
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 201982052.782.49$4,328
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 201864052.934.24$3,388
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 2018116060.183.08$6,981
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 201785049.292.98$4,190
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 201777046.772.98$3,601
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 201685046.193.09$3,926
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 201646045.352.69$2,086
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 201643027.352.36$1,176
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 2015103040.162.87$4,136
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 201528044.662.98$1,250
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 201467089.394.04$5,989
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 201489095.895.06$8,534
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 2013980104.113.72$10,203
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 201363094.834.15$5,974
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 201292086.773.42$7,983
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 2012119079.822.52$9,499
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 201273098.092.73$7,161
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 2011105083.623.99$8,780
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 2011810105.964.33$8,583
Mar 201137096.364.06$3,565
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 201099085.734.35$8,487
Nov 20100080.843.80$0
Oct 201024078.103.51$1,874
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 201081070.364.91$5,699
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 201051078.394.39$3,998
Feb 20100073.585.44$0
Jan 201091074.365.96$6,767
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 200962072.544.11$4,497
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 200962066.163.90$4,102
May 200981054.743.93$4,434
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 2009125032.814.63$4,101
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 2008600114.228.48$6,853
Jul 20081530131.0811.39$20,055
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 2008137092.538.77$12,677
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 2007129091.677.29$11,825
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 2007124069.066.39$8,563
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 2007126059.617.81$7,511
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 2004128034.365.53$4,398
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 2003128028.804.60$3,686
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 2003157033.487.93$5,256
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 2002161026.464.23$4,260
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 2002128024.583.06$3,146
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 2002126023.653.51$2,980
Mar 20020022.003.10$0
Feb 200257018.222.38$1,039
Jan 2002120017.172.38$2,060
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 2001118024.262.25$2,863
Aug 20010024.873.05$0
Jul 2001118023.933.20$2,824
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 19984809.201.77$442
Nov 19980010.892.19$0
Oct 1998121012.421.97$1,503
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 1998123011.742.24$1,444
Jun 19980011.242.24$0
May 199885012.622.21$1,073
Apr 199896013.042.51$1,252
Mar 1998129012.802.31$1,651
Feb 19980013.952.30$0
Jan 1998119014.702.15$1,749
Dec 1997126016.322.41$2,056
Nov 19970018.193.09$0
Oct 1997121019.253.15$2,329
Sep 1997124017.742.95$2,200
Aug 19970017.862.55$0
Jul 1997167017.582.25$2,936
Jun 1997126017.242.26$2,172
May 1997128018.972.31$2,428
Apr 19970017.882.08$0
Mar 1997127018.951.94$2,407
Feb 199761020.492.21$1,250
Jan 1997166023.483.54$3,898
Dec 1996237023.32$5,527
Nov 19960021.97$0
Oct 1996113023.31$2,634
Sep 1996113122.22$2,511
Aug 1996103120.26$2,087
Jul 1996128119.55$2,502
Jun 199682118.73$1,536
May 1996110119.43$2,137
Apr 1996126121.51$2,710
Mar 1996120119.38$2,326
Feb 199681116.98$1,375
Jan 1996173117.07$2,953
Dec 1995128117.19$2,200
Nov 19950116.00$0
Oct 199582115.43$1,265
Sep 199588116.18$1,424
Aug 199586115.92$1,369
Jul 1995120115.24$1,829
Jun 1995157116.41$2,576
May 19950117.56$0
Apr 1995124117.73$2,199
Mar 199590116.44$1,480
Feb 1995101116.58$1,675
Jan 199586115.92$1,369
Dec 1994109115.03$1,638
Nov 199495115.90$1,511
Oct 1994201115.58$3,132
Sep 19940115.29$0
Aug 1994112116.13$1,807
Jul 199499117.56$1,738
Jun 1994109117.09$1,863
May 1994123115.88$1,953
Apr 1994107114.14$1,513
Mar 1994123112.46$1,533
Feb 1994150112.50$1,875
Jan 1994131112.66$1,658
Dec 1993113112.33$1,393
Nov 1993123114.49$1,782
Oct 1993135115.85$2,140
Sep 1993131115.03$1,969
Aug 199385115.66$1,331
Jul 199383115.46$1,283
Jun 1993167116.79$2,804
May 1993171117.68$3,023
Apr 1993172118.05$3,105
Mar 19930118.14$0
Feb 1993125117.90$2,238
Jan 19930116.93$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.

Mar 2026 — as filed, then multipliedworked
Oil                   69 bbl  × $ 89.75 =     $6,193
Casinghead gas         0 Mcf  × $  3.15 =         $0

────────────────────────────────────────────────────
Month total                                   $6,193

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. 09/O/18819 is the state's own key, not one this site invented.