ROBERTSON-BLUESTEM

Operated by CHARTER OAK PRODUCTION CO., LLC (P-5 146669) in the SEPTEMBER (9300) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 23667District 09Field 82258600NGPA filingOilCasinghead gasSaveExport
Value, all time
$1.7 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 5 leases and 5 wells, and the rule below applies to all of them.

Discovered
1982-01-12
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: 250 MCF PER DAY

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
OilDisposition18,702 bbl$553,565
Casinghead gasProduction709,688 Mcf$1,180,824
Total$1,734,390

360,458 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 33.6802, -96.6831. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

33.68020, -96.68312 · 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
9,557 ft
1 wells filed one
Completion to plug
38.8 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 9,557 ft.

Completions filed
Sep 1983
1 of 1 wells
Plug dates filed
Jun 2022
1 of 1 wells

Last completion to plug: a median of 38.8 years across the 1 well that filed both dates, with the middle half between 38.8 years and 38.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-1813086919,557 ftSep 1983Jun 2022Yes

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 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
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 20240075.632.06$0
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 20230077.892.81$0
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 202200104.226.84$0
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 20210079.795.71$0
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 20210961.302.72$24
Feb 20210757.805.55$39
Jan 202101250.412.81$34
Dec 20200944.642.68$24
Nov 20200538.772.71$14
Oct 20200736.972.48$17
Sep 20200437.091.99$8
Aug 20200539.982.39$12
Jul 20200438.371.83$7
Jun 20200934.901.69$15
May 20200916.921.81$16
Apr 202001114.751.80$20
Mar 202001030.341.86$19
Feb 202001549.881.98$30
Jan 202001857.252.09$38
Dec 201901859.012.30$41
Nov 201901755.302.75$47
Oct 201901553.472.42$36
Sep 201901755.052.66$45
Aug 201902253.112.30$51
Jul 20190956.272.46$22
Jun 201901552.782.49$37
May 201901758.482.74$47
Apr 20190962.632.75$25
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 2018165059.543.11$9,824
Aug 201801359.403.07$40
Jul 201802565.142.93$73
Jun 201802360.183.08$71
May 201802265.382.90$64
Apr 201801963.842.90$55
Mar 201801961.222.79$53
Feb 201801161.782.77$30
Jan 20180262.874.01$8
Dec 201701657.272.92$47
Nov 201701655.423.12$50
Oct 201701749.292.98$51
Sep 201701747.523.09$52
Aug 201703445.373.00$102
Jul 201703843.873.09$117
Jun 201704042.493.09$123
May 20171614445.373.26$7,448
Apr 201706347.933.21$202
Mar 201706146.772.98$182
Feb 201708550.452.95$251
Jan 201705749.413.42$195
Dec 201608148.763.72$302
Nov 201605342.492.64$140
Oct 201606046.193.09$185
Sep 20161607241.553.10$6,871
Aug 201603341.442.92$97
Jul 201606941.622.92$202
Jun 201605845.352.69$156
May 201607342.521.99$145
Apr 20161454036.561.99$5,381
Mar 201604433.011.79$79
Feb 201605926.472.06$122
Jan 201606327.352.36$149
Dec 201506732.362.00$134
Nov 201506538.792.17$141
Oct 20151525243.552.43$6,746
Sep 201504442.992.76$121
Aug 201504840.162.87$138
Jul 201505248.152.95$153
Jun 201502056.152.88$58
May 201505055.212.96$148
Apr 201507149.822.71$192
Mar 201507442.892.93$217
Feb 201506644.662.98$196
Jan 201505943.433.10$183
Dec 20141567354.693.59$8,794
Nov 201407770.464.25$327
Oct 201407478.303.90$289
Sep 201403686.164.05$146
Aug 20141634089.394.04$14,732
Jul 201404496.564.18$184
Jun 201404298.164.74$199
May 20140094.734.73$0
Apr 201403995.944.81$188
Mar 201403995.895.06$197
Feb 201403597.406.19$217
Jan 201403790.404.86$180
Dec 201306791.824.35$292
Nov 201303088.853.74$112
Oct 201303097.423.78$113
Sep 2013036104.113.72$134
Aug 201316246104.253.52$17,051
Jul 2013089102.523.72$331
Jun 201307394.403.93$287
May 201308194.834.15$336
Apr 20131559593.964.28$14,971
Mar 2013011193.623.91$434
Feb 201306591.233.42$222
Jan 201307991.603.42$270
Dec 201207586.773.42$257
Nov 20121564986.953.62$13,742
Oct 201203889.383.40$129
Sep 201204094.672.92$117
Aug 201204092.662.91$116
Jul 201205485.133.02$163
Jun 201207479.822.52$186
May 201207991.612.49$197
Apr 201216480101.652.00$16,830
Mar 2012068105.052.22$151
Feb 2012076101.102.57$195
Jan 201209398.092.73$254
Dec 201108696.873.24$279
Nov 201106995.723.31$228
Oct 201106684.983.65$241
Sep 201104783.623.99$187
Aug 201132210083.404.15$27,270
Jul 2011010694.144.52$479
Jun 201108192.904.64$376
May 201115512898.134.40$15,774
Apr 2011062105.964.33$269
Mar 201108896.364.06$357
Feb 201109585.644.18$397
Jan 201115913986.504.59$14,391
Dec 201008485.734.35$365
Nov 201003580.843.80$133
Oct 201002878.103.51$98
Sep 201005672.633.98$223
Aug 201005273.684.42$230
Jul 20101635772.554.74$12,096
Jun 20101636170.364.91$11,768
May 201008471.124.24$356
Apr 201003181.694.12$128
Mar 201005878.394.39$255
Feb 201003773.585.44$201
Jan 201003874.365.96$227
Dec 20091614271.445.48$11,732
Nov 200908774.593.75$326
Oct 200907172.544.11$292
Sep 200909965.543.06$303
Aug 2009012867.423.22$412
Jul 200905561.133.46$191
Jun 200905566.163.90$214
May 20092731354.743.93$14,995
Apr 200907846.773.59$280
Mar 20091636142.144.06$7,116
Feb 2009010132.814.63$468
Jan 20090035.865.37$0
Dec 200806037.105.98$359
Nov 20081596255.496.86$9,248
Oct 200809275.246.92$637
Sep 2008078101.767.88$614
Aug 20081620114.228.48$18,504
Jul 2008094131.0811.39$1,071
Jun 2008022131.3313.03$287
May 2008022123.1711.57$255
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 20070259.617.81$16
Mar 20070056.927.30$0
Feb 20070155.108.22$8
Jan 20070550.306.73$34
Dec 200602356.656.92$159
Nov 200604354.207.62$328
Oct 200605554.906.01$331
Sep 200605160.085.04$257
Aug 200604868.717.34$352
Jul 200606369.376.34$400
Jun 2006010066.286.38$638
May 2006014766.016.42$944
Apr 2006021564.397.36$1,583
Mar 2006035456.707.08$2,507
Feb 200616233457.597.75$11,918
Jan 2006029760.598.93$2,653
Dec 2005031154.9413.42$4,172
Nov 2005021154.6910.59$2,234
Oct 2005031358.3413.80$4,318
Sep 200516251961.4512.08$16,224
Aug 2005067261.519.80$6,583
Jul 2005062155.697.84$4,871
Jun 2005029952.337.38$2,207
May 2005065045.226.65$4,323
Apr 2005081649.207.36$6,006
Mar 2005075750.377.15$5,416
Feb 2005060945.226.31$3,844
Jan 200517977243.166.32$12,606
Dec 2004091839.866.75$6,197
Nov 2004073745.286.33$4,666
Oct 2004093249.706.52$6,072
Sep 200401,17043.245.28$6,182
Aug 200401,24142.375.55$6,888
Jul 20041481,38738.286.08$14,104
Jun 200401,51136.106.43$9,720
May 200401,60937.486.49$10,450
Apr 200401,79234.475.86$10,498
Mar 20041521,66634.365.53$14,436
Feb 2004056932.455.51$3,135
Jan 2004076732.036.30$4,832
Dec 2003072030.266.30$4,537
Nov 2003073428.804.60$3,373
Oct 200312875028.174.76$7,175
Sep 2003057726.314.75$2,740
Aug 2003071229.765.13$3,652
Jul 2003022529.415.17$1,163
Jun 2003078128.565.98$4,673
May 200302,01226.595.97$12,017
Apr 200301,56026.675.41$8,435
Mar 200302,83031.146.10$17,252
Feb 200302,67033.487.93$21,162
Jan 200302,83030.315.58$15,797
Dec 20021762,99126.914.85$19,254
Nov 200202,93124.664.14$12,125
Oct 200203,22126.464.23$13,622
Sep 200203,06727.443.64$11,149
Aug 200203,10325.963.16$9,818
Jul 200203,15724.583.06$9,666
Jun 20021713,22123.733.34$14,810
May 200203,20924.663.58$11,501
Apr 200203,36023.653.51$11,801
Mar 20021743,77122.003.10$15,528
Feb 200203,12718.222.38$7,429
Jan 200203,50117.172.38$8,317
Dec 200102,57016.932.36$6,077
Nov 20011732,70518.072.41$9,633
Oct 200102,80319.782.53$7,088
Sep 200102,66124.262.25$5,991
Aug 200102,82224.873.05$8,616
Jul 20011752,87723.933.20$13,386
Jun 200102,85424.563.82$10,914
May 200103,00825.524.31$12,956
Apr 200102,83824.685.34$15,142
Mar 20011852,96424.545.38$20,476
Feb 200102,63627.755.77$15,202
Jan 200103,07227.478.40$25,801
Dec 20001783,08026.889.12$32,882
Nov 200003,23332.215.66$18,292
Oct 200003,44531.235.15$17,726
Sep 200003,38531.875.19$17,556
Aug 20001653,53529.644.54$20,942
Jul 200003,64328.534.09$14,899
Jun 200003,54829.304.40$15,601
May 20001743,73527.263.68$18,487
Apr 200003,69824.513.12$11,523
Mar 20001834,02528.422.86$16,711
Feb 200003,63027.622.73$9,897
Jan 20001654,12725.272.48$14,407
Dec 199904,79324.282.42$11,617
Nov 199903,08123.192.43$7,499
Oct 199903,08120.982.80$8,638
Sep 19991713,10421.752.62$11,848
Aug 199903,31919.262.88$9,544
Jul 199903,47817.892.37$8,251
Jun 199903,53015.942.36$8,338
May 199903,61515.792.32$8,390
Apr 19991783,72115.102.21$10,904
Mar 199904,12112.471.84$7,576
Feb 199903,5589.981.82$6,468
Jan 19991754,42610.381.90$10,226
Dec 199804,6339.201.77$8,216
Nov 19981744,45010.892.19$11,621
Oct 199804,66712.421.97$9,190
Sep 19981914,70612.592.08$12,206
Aug 199804,36311.301.91$8,322
Jul 199805,43611.742.24$12,162
Jun 19981566,45511.242.24$16,195
May 199805,77612.622.21$12,744
Apr 19981805,88613.042.51$17,094
Mar 199806,46812.802.31$14,937
Feb 19981744,98113.952.30$13,879
Jan 199806,57614.702.15$14,170
Dec 19971796,14216.322.41$17,730
Nov 19971746,11418.193.09$22,047
Oct 199706,48419.253.15$20,423
Sep 19971746,40017.742.95$21,998
Aug 199705,77017.862.55$14,741
Jul 19971706,67117.582.25$17,978
Jun 19971736,95317.242.26$18,677
May 19971816,94818.972.31$19,473
Apr 199706,97717.882.08$14,532
Mar 19971717,19318.951.94$17,189
Feb 19971676,20620.492.21$17,112
Jan 19971697,32723.483.54$29,904
Dec 199607,10123.32$0
Nov 19961686,96521.97$3,691
Oct 19961718,64523.31$3,986
Sep 19961737,89622.22$3,844
Aug 19961708,28020.26$3,444
Jul 19961818,37919.55$3,539
Jun 19961808,45418.73$3,371
May 19963658,84519.43$7,092
Apr 19961828,78121.51$3,915
Mar 19961839,22319.38$3,547
Feb 19961838,58216.98$3,107
Jan 19961849,20017.07$3,141
Dec 19953667,63817.19$6,292
Nov 19951847,41516.00$2,944
Oct 19951826,45315.43$2,808
Sep 19951806,56316.18$2,912
Aug 19951817,57315.92$2,882
Jul 19951797,39915.24$2,728
Jun 19951827,43016.41$2,987
May 19951827,99517.56$3,196
Apr 19951847,98217.73$3,262
Mar 19951858,58916.44$3,041
Feb 199503,55916.58$0
Jan 19953737,79415.92$5,938
Dec 19941738,25615.03$2,600
Nov 199402,29915.90$0
Oct 199402,27815.58$0
Sep 19941794,38315.29$2,737
Aug 19943628,38316.13$5,839
Jul 19941767,78217.56$3,091
Jun 19943508,85217.09$5,982
May 19943648,47515.88$5,780
Apr 19941837,88014.14$2,588
Mar 19943717,84612.46$4,623
Feb 199402,79712.50$0
Jan 19943727,42712.66$4,710
Dec 199333310,53112.33$4,106
Nov 199303,39914.49$0
Oct 19931843,30015.85$2,916
Sep 19931877,31115.03$2,811
Aug 19931815,43615.66$2,834
Jul 199317914,71115.46$2,767
Jun 199353814,81816.79$9,033
May 199317814,87317.68$3,147
Apr 199331714,22618.05$5,722
Mar 199308,45218.14$0
Feb 1993131117.90$2,345
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 2021 — as filed, then multipliedworked
Oil                    0 bbl  × $ 61.30 =         $0
Casinghead gas         9 Mcf  × $  2.72 =        $24

────────────────────────────────────────────────────
Month total                                      $24

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/23667 is the state's own key, not one this site invented.