SCHIEVELBIEN, ALBERT

Operated by TANGLEHEAD OPERATING, LLC (P-5 835711) in the LA VERNIA field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 6012District 01Field 51093001OilCasinghead gasSaveExport
Value, all time
$641 k
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 387 leases and 2,110 wells, and the rule below applies to all of them.

Discovered
1939-12-13
as the register files it
Field class
Oil
the register's own label
Between wells
300 ft
minimum
From a lease line
150 ft
minimum

A drilling unit in this field needs at least 2.06 acres. The field rule took effect on 1983-02-07.

The Commission's schedule remark for this field reads: DOCKET #1-85148 ALLOWS OP. TO DEVELOP ON 2.06 ACRES

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
OilDisposition16,276 bbl$640,526
Casinghead gasProduction95 Mcf$128
Total$640,654

48 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 (20)

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 29.4083, -98.0599. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

29.40790, -98.05964 · 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
40.0%
8 of 20 wells
With a plug date
45.0%
9 of 20 wells
Median depth
1,100 ft
19 wells filed one
Completion to plug
18.7 years
median over 9 wells

What the state filed about each well

On the RRC proration schedule
840.0%
A plug date is filed
945.0%
BothOn the schedule and plugged. Neither fact cancels the other.
840.0%
NeitherNo plug date, and not on the schedule.
1155.0%

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

Total depth in feet, 19 of 20 wells. Median 1,100 ft, with the middle half between 1,052 and 1,149 ft; the shallowest is 1,012 ft and the deepest 1,250 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, 20 of 20 wells, Oct 1979 – Dec 1983. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1979 – Dec 1983
20 of 20 wells
Plug dates filed
Dec 1979 – May 2011
9 of 20 wells; 11 filed none

Last completion to plug: a median of 18.7 years across the 9 wells that filed both dates, with the middle half between 18.7 years and 20.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

20 wells

42-18732604171,148 ftDec 1983Aug 2002Yes
42-18732707121,053 ftDec 1983Aug 2002Yes
42-18732606201,130 ftDec 1983Aug 2002Yes
42-18732605191,120 ftDec 1983Aug 2002Yes
42-18732434151,102 ftMay 1983Aug 2002Yes
42-18731894111,045 ftMay 1983
42-18731900101,029 ftMay 1983
42-18731897141,075 ftJul 1982
42-18732119181,092 ftJul 1982
42-18731899161,090 ftFeb 1982
42-18731896131,041 ftFeb 1982Aug 2002Yes
42-1873121491,150 ftSep 1980
42-1873121271,182 ftSep 1980
42-1873121381,154 ftAug 1980
42-1873115261,250 ftApr 1980
42-1873115051,200 ftApr 1980
42-1873112231,100 ftApr 1980
42-1873104441,012 ftNov 1979May 2011Yes
42-1873104311,050 ftOct 1979Aug 2002Yes
42-187310452Oct 1979Dec 1979

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 2022490101.587.54$4,977
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 2022490104.226.84$5,107
Mar 202200108.885.08$0
Feb 202272091.054.86$6,556
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 202131077.435.24$2,400
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 202154063.483.02$3,428
Apr 20210060.362.76$0
Mar 202151061.302.72$3,126
Feb 202140057.805.55$2,312
Jan 202138050.412.81$1,916
Dec 20200044.642.68$0
Nov 202028038.772.71$1,086
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 202046039.982.39$1,839
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 2020152016.921.81$2,572
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 202081049.881.98$4,040
Jan 20200057.252.09$0
Dec 201995059.012.30$5,606
Nov 2019139055.302.75$7,687
Oct 20190053.472.42$0
Sep 2019126055.052.66$6,936
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 201972052.782.49$3,800
May 20190058.482.74$0
Apr 2019153062.632.75$9,582
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 201840061.443.40$2,458
Sep 201859059.543.11$3,513
Aug 20180059.403.07$0
Jul 201841065.142.93$2,671
Jun 20180060.183.08$0
May 201881065.382.90$5,296
Apr 201875063.842.90$4,788
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 201714057.272.92$802
Nov 201766055.423.12$3,658
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 201745042.493.09$1,912
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 201760046.772.98$2,806
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 201646048.763.72$2,243
Nov 20160042.492.64$0
Oct 201665046.193.09$3,002
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 2016110041.622.92$4,578
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 2016114033.011.79$3,763
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 2015126038.792.17$4,888
Oct 20150043.552.43$0
Sep 2015150042.992.76$6,449
Aug 20150040.162.87$0
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 20150044.662.98$0
Jan 2015110043.433.10$4,777
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 201483078.303.90$6,499
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 2014157096.564.18$15,160
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 201465097.406.19$6,331
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 2013157097.423.78$15,295
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 2013160094.403.93$15,104
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 2012154086.953.62$13,390
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 201247092.662.91$4,355
Jul 20120085.133.02$0
Jun 2012165079.822.52$13,170
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 201287098.092.73$8,534
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 201197084.983.65$8,243
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 2011135092.904.64$12,542
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 2011151085.644.18$12,932
Jan 20110086.504.59$0
Dec 201086085.734.35$7,373
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 201042072.633.98$3,050
Aug 20100073.684.42$0
Jul 201087072.554.74$6,312
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 201074081.694.12$6,045
Mar 20100078.394.39$0
Feb 2010116073.585.44$8,535
Jan 20100074.365.96$0
Dec 200973071.445.48$5,215
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 2009113065.543.06$7,406
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009128066.163.90$8,468
May 20090054.743.93$0
Apr 2009127046.773.59$5,940
Mar 20090042.144.06$0
Feb 200990032.814.63$2,953
Jan 20090035.865.37$0
Dec 200881037.105.98$3,005
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 2008870114.228.48$9,937
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 2008990123.1711.57$12,194
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 200882090.388.21$7,411
Dec 2007112088.337.30$9,893
Nov 20070091.677.29$0
Oct 200753082.856.92$4,391
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 2007108070.906.39$7,657
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 2007121059.617.81$7,213
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 200797050.306.73$4,879
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 2006107054.906.01$5,874
Sep 20060060.085.04$0
Aug 2006132068.717.34$9,070
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 2006136064.397.36$8,757
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 2006123060.598.93$7,453
Dec 20050054.9413.42$0
Nov 200585054.6910.59$4,649
Oct 20050058.3413.80$0
Sep 200564061.4512.08$3,933
Aug 20050061.519.80$0
Jul 200566055.697.84$3,676
Jun 200552052.337.38$2,721
May 200517045.226.65$769
Apr 200592049.207.36$4,526
Mar 20050050.377.15$0
Feb 200584045.226.31$3,798
Jan 200552043.166.32$2,244
Dec 20040039.866.75$0
Nov 200488045.286.33$3,985
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 2004106042.375.55$4,491
Jul 2004161038.286.08$6,163
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 200477034.365.53$2,646
Feb 20040032.455.51$0
Jan 2004139032.036.30$4,452
Dec 20030030.266.30$0
Nov 200390028.804.60$2,592
Oct 20030028.174.76$0
Sep 200328026.314.75$737
Aug 20030029.765.13$0
Jul 200388029.415.17$2,588
Jun 200394028.565.98$2,685
May 2003160026.595.97$4,254
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 2002109026.914.85$2,933
Nov 2002156024.664.14$3,847
Oct 20020026.464.23$0
Sep 2002168027.443.64$4,610
Aug 200271025.963.16$1,843
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 2002170022.003.10$3,740
Feb 20020018.222.38$0
Jan 2002110017.172.38$1,889
Dec 20010016.932.36$0
Nov 2001142018.072.41$2,566
Oct 20010019.782.53$0
Sep 200184024.262.25$2,038
Aug 200191024.873.05$2,263
Jul 200133023.933.20$790
Jun 20010024.563.82$0
May 2001113025.524.31$2,884
Apr 20010024.685.34$0
Mar 200115024.545.38$368
Feb 2001126027.755.77$3,497
Jan 2001150027.478.40$4,121
Dec 20000026.889.12$0
Nov 20000132.215.66$6
Oct 200020131.235.15$630
Sep 200093131.875.19$2,969
Aug 20000129.644.54$5
Jul 20000128.534.09$4
Jun 200095129.304.40$2,788
May 20000127.263.68$4
Apr 200075124.513.12$1,841
Mar 20000128.422.86$3
Feb 20000127.622.73$3
Jan 2000157125.272.48$3,970
Dec 19990124.282.42$2
Nov 1999140123.192.43$3,249
Oct 19990120.982.80$3
Sep 1999194121.752.62$4,222
Aug 19990119.262.88$3
Jul 19990117.892.37$2
Jun 199996115.942.36$1,533
May 19990115.792.32$2
Apr 199954115.102.21$818
Mar 1999105112.471.84$1,311
Feb 19994919.981.82$491
Jan 199952110.381.90$542
Dec 19989319.201.77$857
Nov 19980110.892.19$2
Oct 199853112.421.97$660
Sep 19980112.592.08$2
Aug 199867111.301.91$759
Jul 199865111.742.24$765
Jun 1998212111.242.24$2,385
May 19980112.622.21$2
Apr 19980113.042.51$3
Mar 1998136112.802.31$1,743
Feb 19980113.952.30$2
Jan 1998125114.702.15$1,840
Dec 19970116.322.41$2
Nov 199778118.193.09$1,422
Oct 199770119.253.15$1,351
Sep 199762117.742.95$1,103
Aug 1997114117.862.55$2,039
Jul 1997137117.582.25$2,411
Jun 19970117.242.26$2
May 19970118.972.31$2
Apr 1997113117.882.08$2,023
Mar 19970118.951.94$2
Feb 199756120.492.21$1,150
Jan 199764123.483.54$1,506
Dec 199699123.32$2,309
Nov 199634121.97$747
Oct 199672123.31$1,678
Sep 199685122.22$1,889
Aug 199675120.26$1,520
Jul 199681119.55$1,584
Jun 199680118.73$1,498
May 199688119.43$1,710
Apr 199675121.51$1,613
Mar 1996170119.38$3,295
Feb 19960116.98$0
Jan 199676117.07$1,297
Dec 1995135117.19$2,321
Nov 19950116.00$0
Oct 199587115.43$1,342
Sep 199581116.18$1,311
Aug 199586115.92$1,369
Jul 199591115.24$1,387
Jun 199573116.41$1,198
May 199588117.56$1,545
Apr 1995147117.73$2,606
Mar 19950116.44$0
Feb 199577116.58$1,277
Jan 199589115.92$1,417
Dec 199487115.03$1,308
Nov 199497115.90$1,542
Oct 1994169115.58$2,633
Sep 19940115.29$0
Aug 199496116.13$1,548
Jul 1994148117.56$2,599
Jun 1994157117.09$2,683
May 19940115.88$0
Apr 1994165114.14$2,333
Mar 19940112.46$0
Feb 1994102112.50$1,275
Jan 199490112.66$1,139
Dec 1993104112.33$1,282
Nov 1993122114.49$1,768
Oct 1993165115.85$2,615
Sep 1993134115.03$2,014
Aug 199377115.66$1,206
Jul 1993142115.46$2,195
Jun 1993178116.79$2,989
May 1993166117.68$2,935
Apr 19930118.05$0
Mar 1993109118.14$1,977
Feb 1993213117.90$3,813
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.

Jul 2022 — as filed, then multipliedworked
Oil                   49 bbl  × $101.58 =     $4,977
Casinghead gas         0 Mcf  × $  7.54 =         $0

────────────────────────────────────────────────────
Month total                                   $4,977

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/6012 is the state's own key, not one this site invented.