DUNCAN, J.R.

Operated by XTO ENERGY INC. (P-5 945936) in the SAINT LAWRENCE (STRAWN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 29220District 08Field 79689700NGPA filingOilCasinghead gasSaveExport
Value, all time
$1.6 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 55 leases and 65 wells, and the rule below applies to all of them.

Discovered
1983-08-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1991-03-01.

The Commission's schedule remark for this field reads: OPERATOR REQUEST (COSTILLA PETROLEUM CORP.)

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
OilDisposition7,123 bbl$255,330
Casinghead gasProduction498,082 Mcf$1,336,719
Total$1,592,049

178,253 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 (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 31.7744, -101.5647. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.77438, -101.56470 · 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
0.0%
0 of 1 wells
Median depth
10,155 ft
1 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
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 10,155 ft.

Completions filed
Aug 1984
1 of 1 wells

1 well

42-17331581110,155 ftAug 1984Yes

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 20260089.753.15$0
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 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 202501562.363.54$53
Mar 202502567.704.27$107
Feb 202503670.884.34$156
Jan 202503174.324.28$133
Dec 202403168.993.12$97
Nov 202402969.052.20$64
Oct 202404871.372.28$110
Sep 202402369.612.36$54
Aug 202404275.632.06$87
Jul 202402979.932.15$62
Jun 202403478.082.63$90
May 202405378.812.20$117
Apr 202401584.451.66$25
Mar 202404580.301.55$70
Feb 202401976.091.78$34
Jan 202404873.023.30$158
Dec 202301671.262.61$42
Nov 202301977.892.81$53
Oct 202304085.443.09$123
Sep 2023010189.042.74$276
Aug 2023011480.522.67$305
Jul 202318213274.852.64$13,971
Jun 2023014368.962.26$323
May 2023017070.622.23$379
Apr 2023017678.122.24$394
Mar 2023021872.852.39$522
Feb 2023028775.112.47$708
Jan 2023032876.533.39$1,111
Dec 2022035776.415.73$2,045
Nov 2022031685.005.65$1,784
Oct 2022026087.185.86$1,525
Sep 2022020484.888.16$1,665
Aug 2022021894.529.13$1,990
Jul 20220181101.587.54$1,365
Jun 20220198115.097.98$1,579
May 20220204109.378.43$1,720
Apr 20220165104.226.84$1,128
Mar 20220183108.885.08$929
Feb 202206991.054.86$335
Jan 2022025281.844.54$1,144
Dec 2021024571.323.90$955
Nov 2021023377.435.24$1,220
Oct 2021023279.795.71$1,326
Sep 2021021569.865.35$1,150
Aug 2021021066.024.22$886
Jul 2021014770.783.98$585
Jun 2021014969.493.38$504
May 2021015963.483.02$480
Apr 2021020660.362.76$568
Mar 2021018361.302.72$497
Feb 2021010757.805.55$594
Jan 2021024050.412.81$674
Dec 2020024344.642.68$650
Nov 2020021538.772.71$582
Oct 2020023436.972.48$580
Sep 2020021037.091.99$418
Aug 2020022839.982.39$544
Jul 2020022338.371.83$407
Jun 2020021334.901.69$360
May 202017621416.921.81$3,366
Apr 2020018814.751.80$339
Mar 2020019730.341.86$366
Feb 2020029649.881.98$586
Jan 20200057.252.09$0
Dec 2019029459.012.30$677
Nov 2019028655.302.75$787
Oct 20190053.472.42$0
Sep 2019028455.052.66$755
Aug 2019030553.112.30$703
Jul 2019030156.272.46$740
Jun 2019029852.782.49$742
May 2019029958.482.74$819
Apr 2019028462.632.75$781
Mar 2019031156.803.06$952
Feb 20190050.852.79$0
Jan 2019033046.033.23$1,065
Dec 2018011246.594.19$469
Nov 2018056252.934.24$2,381
Oct 2018077761.443.40$2,640
Sep 2018074959.543.11$2,328
Aug 201817976259.403.07$12,969
Jul 2018077065.142.93$2,258
Jun 2018073960.183.08$2,274
May 2018077365.382.90$2,242
Apr 2018077663.842.90$2,251
Mar 2018091261.222.79$2,542
Feb 2018062061.782.77$1,715
Jan 2018086862.874.01$3,480
Dec 2017057057.272.92$1,665
Nov 20177397355.423.12$7,080
Oct 201701,02549.292.98$3,058
Sep 201701,00147.523.09$3,090
Aug 201701,06045.373.00$3,185
Jul 201701,12243.873.09$3,464
Jun 201701,06342.493.09$3,282
May 201701,23245.373.26$4,021
Apr 201701,40847.933.21$4,522
Mar 2017070246.772.98$2,095
Feb 2017022150.452.95$653
Jan 2017022149.413.42$756
Dec 2016031748.763.72$1,180
Nov 2016015642.492.64$413
Oct 2016024846.193.09$766
Sep 2016025641.553.10$794
Aug 2016023141.442.92$676
Jul 2016035741.622.92$1,044
Jun 2016039445.352.69$1,058
May 2016029342.521.99$583
Apr 2016043336.561.99$862
Mar 2016048133.011.79$863
Feb 2016055026.472.06$1,135
Jan 2016065927.352.36$1,558
Dec 201518076732.362.00$7,360
Nov 2015078738.792.17$1,706
Oct 2015070043.552.43$1,699
Sep 2015086542.992.76$2,386
Aug 2015070740.162.87$2,031
Jul 2015096048.152.95$2,827
Jun 2015034756.152.88$1,000
May 2015050255.212.96$1,484
Apr 2015056849.822.71$1,537
Mar 2015066242.892.93$1,943
Feb 2015070344.662.98$2,092
Jan 2015055943.433.10$1,733
Dec 2014090554.693.59$3,250
Nov 2014099470.464.25$4,226
Oct 201401,01978.303.90$3,975
Sep 201401,00986.164.05$4,082
Aug 201401,09689.394.04$4,422
Jul 201401,08096.564.18$4,514
Jun 2014090198.164.74$4,268
May 2014083394.734.73$3,937
Apr 201401,26395.944.81$6,074
Mar 20141881,58895.895.06$26,058
Feb 201401,45197.406.19$8,985
Jan 2014095490.404.86$4,637
Dec 2013014391.824.35$623
Nov 201301,10888.853.74$4,142
Oct 2013053397.423.78$2,014
Sep 20130841104.113.72$3,127
Aug 201301,320104.253.52$4,650
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 2013027893.623.91$1,088
Feb 2013080291.233.42$2,743
Jan 20131871,10391.603.42$20,901
Dec 201201,09286.773.42$3,735
Nov 201201,09386.953.62$3,962
Oct 201201,14389.383.40$3,886
Sep 201201,12894.672.92$3,292
Aug 201201,16992.662.91$3,400
Jul 201201,17685.133.02$3,552
Jun 201201,17879.822.52$2,967
May 201201,24491.612.49$3,095
Apr 201201,126101.652.00$2,248
Mar 201201,254105.052.22$2,786
Feb 201201,192101.102.57$3,064
Jan 201201,19198.092.73$3,256
Dec 201101,21296.873.24$3,927
Nov 20111761,19495.723.31$20,800
Oct 201101,22984.983.65$4,484
Sep 201101,17783.623.99$4,691
Aug 201101,27583.404.15$5,290
Jul 201101,29794.144.52$5,859
Jun 201101,41492.904.64$6,561
May 201101,37498.134.40$6,052
Apr 20110966105.964.33$4,186
Mar 201101,23396.364.06$5,003
Feb 201101,01485.644.18$4,239
Jan 20111891,23286.504.59$22,002
Dec 201001,24785.734.35$5,422
Nov 201001,23480.843.80$4,683
Oct 201001,32378.103.51$4,642
Sep 2010072572.633.98$2,885
Aug 2010076373.684.42$3,372
Jul 2010076072.554.74$3,600
Jun 201018277070.364.91$16,587
May 2010084271.124.24$3,566
Apr 2010059681.694.12$2,457
Mar 2010082778.394.39$3,629
Feb 2010074473.585.44$4,049
Jan 2010087274.365.96$5,201
Dec 2009089871.445.48$4,924
Nov 2009082174.593.75$3,080
Oct 200915381172.544.11$14,432
Sep 2009023365.543.06$714
Aug 2009021267.423.22$682
Jul 2009022961.133.46$793
Jun 2009023566.163.90$915
May 2009030254.743.93$1,186
Apr 2009024546.773.59$879
Mar 2009030942.144.06$1,254
Feb 2009034232.814.63$1,584
Jan 2009038235.865.37$2,052
Dec 2008045737.105.98$2,732
Nov 2008052955.496.86$3,629
Oct 2008072275.246.92$4,998
Sep 20080649101.767.88$5,112
Aug 20080848114.228.48$7,194
Jul 20080848131.0811.39$9,658
Jun 20080821131.3313.03$10,700
May 20080862123.1711.57$9,977
Apr 20080827110.3110.45$8,646
Mar 20080853101.909.66$8,243
Feb 200817381592.538.77$23,156
Jan 2008088890.388.21$7,287
Dec 2007087188.337.30$6,360
Nov 2007084991.677.29$6,191
Oct 2007088882.856.92$6,147
Sep 2007085875.846.24$5,357
Aug 2007084769.066.39$5,411
Jul 2007091170.906.39$5,819
Jun 2007088462.007.55$6,673
May 2007091258.747.85$7,156
Apr 2007089859.617.81$7,009
Mar 2007093356.927.30$6,813
Feb 2007084655.108.22$6,951
Jan 2007085350.306.73$5,738
Dec 2006097556.656.92$6,745
Nov 200614494654.207.62$15,011
Oct 2006098354.906.01$5,912
Sep 2006096860.085.04$4,876
Aug 2006099968.717.34$7,333
Jul 2006099769.376.34$6,324
Jun 2006097066.286.38$6,192
May 200601,01266.016.42$6,502
Apr 2006098664.397.36$7,257
Mar 200601,02356.707.08$7,246
Feb 2006093657.597.75$7,255
Jan 200601,06060.598.93$9,469
Dec 200501,04854.9413.42$14,059
Nov 200516198854.6910.59$19,266
Oct 2005098958.3413.80$13,644
Sep 2005095561.4512.08$11,535
Aug 200501,06361.519.80$10,414
Jul 200501,13955.697.84$8,934
Jun 200501,11152.337.38$8,200
May 200501,17245.226.65$7,795
Apr 200501,13849.207.36$8,376
Mar 200501,19150.377.15$8,521
Feb 200501,06445.226.31$6,716
Jan 200501,18643.166.32$7,498
Dec 200401,17939.866.75$7,960
Nov 200401,15245.286.33$7,293
Oct 20041841,17549.706.52$16,800
Sep 200401,16443.245.28$6,150
Aug 200401,22242.375.55$6,783
Jul 200401,19138.286.08$7,246
Jun 200401,15436.106.43$7,424
May 200401,20337.486.49$7,813
Apr 200401,18234.475.86$6,925
Mar 200401,21234.365.53$6,703
Feb 200401,14432.455.51$6,303
Jan 200401,26632.036.30$7,975
Dec 200301,26530.266.30$7,972
Nov 200301,23828.804.60$5,689
Oct 200301,26528.174.76$6,021
Sep 20031791,27526.314.75$10,765
Aug 200301,32229.765.13$6,781
Jul 200301,27829.415.17$6,608
Jun 200301,22328.565.98$7,317
May 200301,28426.595.97$7,669
Apr 200301,25226.675.41$6,770
Mar 200301,32231.146.10$8,059
Feb 200301,17533.487.93$9,313
Jan 200301,42430.315.58$7,949
Dec 200201,46326.914.85$7,101
Nov 200201,30724.664.14$5,407
Oct 200201,34426.464.23$5,684
Sep 20021781,32627.443.64$9,705
Aug 200201,38325.963.16$4,376
Jul 200201,40424.583.06$4,299
Jun 200201,36323.733.34$4,550
May 200201,42524.663.58$5,107
Apr 200201,38923.653.51$4,879
Mar 200201,45522.003.10$4,514
Feb 200201,32618.222.38$3,150
Jan 200201,47417.172.38$3,502
Dec 200101,47416.932.36$3,485
Nov 200101,42718.072.41$3,433
Oct 200101,42119.782.53$3,594
Sep 200101,45224.262.25$3,269
Aug 20013241,52024.873.05$12,699
Jul 200101,55623.933.20$4,975
Jun 200101,23224.563.82$4,711
May 200101,65525.524.31$7,129
Apr 200101,61824.685.34$8,633
Mar 200101,72024.545.38$9,247
Feb 200101,56027.755.77$8,997
Jan 200101,62127.478.40$13,614
Dec 200001,62926.889.12$14,861
Nov 200001,54332.215.66$8,730
Oct 200001,62031.235.15$8,336
Sep 200001,58631.875.19$8,226
Aug 200001,65929.644.54$7,533
Jul 200001,68428.534.09$6,887
Jun 200001,64529.304.40$7,233
May 200001,70727.263.68$6,281
Apr 200001,63824.513.12$5,104
Mar 20003331,58528.422.86$13,997
Feb 200001,75227.622.73$4,777
Jan 200001,92625.272.48$4,777
Dec 199901,95724.282.42$4,743
Nov 199901,88923.192.43$4,598
Oct 199901,94120.982.80$5,442
Sep 199901,95021.752.62$5,107
Aug 199902,06019.262.88$5,924
Jul 199901,99417.892.37$4,731
Jun 199902,04415.942.36$4,828
May 199902,00815.792.32$4,661
Apr 199902,06615.102.21$4,562
Mar 199902,01412.471.84$3,702
Feb 199901,8629.981.82$3,385
Jan 199902,20710.381.90$4,193
Dec 19981892,1509.201.77$5,551
Nov 199802,11110.892.19$4,614
Oct 199802,35712.421.97$4,641
Sep 199802,22712.592.08$4,638
Aug 199802,19811.301.91$4,192
Jul 199802,36111.742.24$5,282
Jun 199802,40611.242.24$5,383
May 199802,27612.622.21$5,022
Apr 199802,48513.042.51$6,226
Mar 19981792,43312.802.31$7,910
Feb 199802,43313.952.30$5,594
Jan 199802,62314.702.15$5,652
Dec 199702,89016.322.41$6,968
Nov 199702,68518.193.09$8,292
Oct 199701,69119.253.15$5,326
Sep 199702,47717.742.95$7,319
Aug 199702,70617.862.55$6,913
Jul 199702,58617.582.25$5,811
Jun 19971852,61017.242.26$9,081
May 199702,45818.972.31$5,674
Apr 199702,56817.882.08$5,349
Mar 199702,87318.951.94$5,571
Feb 199702,66320.492.21$5,874
Jan 19973592,82723.483.54$18,436
Dec 199602,86623.32$0
Nov 199602,86521.97$0
Oct 199603,00723.31$0
Sep 199603,17322.22$0
Aug 199603,05220.26$0
Jul 199602,83019.55$0
Jun 199601,47918.73$0
May 199605,75719.43$0
Apr 199604,34821.51$0
Mar 199603,42519.38$0
Feb 19961803,27016.98$3,056
Jan 199603,75117.07$0
Dec 199504,08517.19$0
Nov 199504,87316.00$0
Oct 199504,05615.43$0
Sep 199503,71016.18$0
Aug 19959003,99615.92$14,328
Jul 199504,26615.24$0
Jun 199504,36316.41$0
May 199503,77317.56$0
Apr 199503,52317.73$0
Mar 199503,66916.44$0
Feb 199503,65816.58$0
Jan 199503,76815.92$0
Dec 199403,71415.03$0
Nov 199403,59815.90$0
Oct 199403,96215.58$0
Sep 199404,18815.29$0
Aug 199404,48816.13$0
Jul 199403,50217.56$0
Jun 199403,52717.09$0
May 199403,58615.88$0
Apr 199403,64314.14$0
Mar 199403,47412.46$0
Feb 19948363,72412.50$10,450
Jan 199403,81712.66$0
Dec 199303,57312.33$0
Nov 199303,72014.49$0
Oct 199303,50315.85$0
Sep 199303,78215.03$0
Aug 199303,45315.66$0
Jul 199304,06115.46$0
Jun 199303,34916.79$0
May 199303,79517.68$0
Apr 19937543,97218.05$13,610
Mar 199304,52918.14$0
Feb 199304,15417.90$0
Jan 199303,57616.93$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.

Apr 2025 — as filed, then multipliedworked
Oil                    0 bbl  × $ 62.36 =         $0
Casinghead gas        15 Mcf  × $  3.54 =        $53

────────────────────────────────────────────────────
Month total                                      $53

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/29220 is the state's own key, not one this site invented.