SHAFFRATH, MAX D., ETAL

Operated by SAHARA OPERATING COMPANY (P-5 743279) in the COYANOSA, W. (DELAWARE 5200) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 16886District 08Field 21390500NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.2 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 12 wells, and the rule below applies to all of them.

Discovered
1962-06-05
as the register files it
Field class
Oil
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres. The field rule took effect on 1984-03-01.

The Commission's schedule remark for this field reads: RULES PERM. DOC. 8-81479 08-05-85

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
OilDisposition59,535 bbl$2,249,333
Casinghead gasProduction114 Mcf$207
Total$2,249,540

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 (4)

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 31.1904, -103.1429. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

31.19050, -103.14205 · 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%
4 of 4 wells
With a plug date
75.0%
3 of 4 wells
Median depth
5,576 ft
3 wells filed one
Completion to plug
41.5 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
4100.0%
A plug date is filed
375.0%
BothOn the schedule and plugged. Neither fact cancels the other.
375.0%
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

Between 5,330 and 6,320 ft, median 5,576 ft, over the 3 wells that filed a depth.

Completions filed
May 1962 – Mar 1981
3 of 4 wells; 1 filed none
Plug dates filed
Jul 2021
3 of 4 wells; 1 filed none

Last completion to plug: a median of 41.5 years across the 3 wells that filed both dates, with the middle half between 40.9 years and 50.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-371100752Yes
42-3713294645,330 ftMar 1981Jul 2021Yes
42-3713294535,576 ftJan 1980Jul 2021Yes
42-3710026416,320 ftMay 1962Jul 2021Yes

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 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
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 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 2019172058.482.74$10,059
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 2019174046.033.23$8,009
Dec 20180046.594.19$0
Nov 2018172052.934.24$9,104
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 2018172059.403.07$10,217
Jul 20180065.142.93$0
Jun 2018176060.183.08$10,592
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 2018174061.222.79$10,652
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017174057.272.92$9,965
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 2017162047.523.09$7,698
Aug 2017177045.373.00$8,030
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 2017180045.373.26$8,167
Apr 2017173047.933.21$8,292
Mar 20170046.772.98$0
Feb 2017173050.452.95$8,728
Jan 20170049.413.42$0
Dec 2016179048.763.72$8,728
Nov 20160042.492.64$0
Oct 2016173046.193.09$7,991
Sep 20160041.553.10$0
Aug 2016172041.442.92$7,128
Jul 20160041.622.92$0
Jun 2016175045.352.69$7,936
May 20160042.521.99$0
Apr 2016171036.561.99$6,252
Mar 2016173033.011.79$5,711
Feb 20160026.472.06$0
Jan 2016170027.352.36$4,650
Dec 2015173032.362.00$5,598
Nov 20150038.792.17$0
Oct 20151043.552.43$44
Sep 20150042.992.76$0
Aug 2015171040.162.87$6,867
Jul 20150048.152.95$0
Jun 2015172056.152.88$9,658
May 20150055.212.96$0
Apr 2015169049.822.71$8,420
Mar 2015171042.892.93$7,334
Feb 2015174044.662.98$7,771
Jan 20150043.433.10$0
Dec 2014172054.693.59$9,407
Nov 20140070.464.25$0
Oct 2014176078.303.90$13,781
Sep 2014173086.164.05$14,906
Aug 20140089.394.04$0
Jul 2014173096.564.18$16,705
Jun 2014173098.164.74$16,982
May 20140094.734.73$0
Apr 2014178095.944.81$17,077
Mar 2014178095.895.06$17,068
Feb 20140097.406.19$0
Jan 2014171090.404.86$15,458
Dec 2013176091.824.35$16,160
Nov 20130088.853.74$0
Oct 2013177097.423.78$17,243
Sep 201300104.113.72$0
Aug 20131720104.253.52$17,931
Jul 20131760102.523.72$18,044
Jun 2013172094.403.93$16,237
May 20130094.834.15$0
Apr 2013175093.964.28$16,443
Mar 2013177093.623.91$16,571
Feb 20130091.233.42$0
Jan 2013171091.603.42$15,664
Dec 20120086.773.42$0
Nov 2012173086.953.62$15,042
Oct 2012170089.383.40$15,195
Sep 20120094.672.92$0
Aug 2012175092.662.91$16,216
Jul 20120085.133.02$0
Jun 2012171079.822.52$13,649
May 2012171091.612.49$15,665
Apr 201200101.652.00$0
Mar 20121780105.052.22$18,699
Feb 20121830101.102.57$18,501
Jan 2012174098.092.73$17,068
Dec 20110096.873.24$0
Nov 2011173095.723.31$16,560
Oct 20110084.983.65$0
Sep 2011177083.623.99$14,801
Aug 2011176083.404.15$14,678
Jul 20110094.144.52$0
Jun 2011175092.904.64$16,258
May 2011167098.134.40$16,388
Apr 201100105.964.33$0
Mar 2011176096.364.06$16,959
Feb 2011172085.644.18$14,730
Jan 2011176086.504.59$15,224
Dec 2010173085.734.35$14,831
Nov 20100080.843.80$0
Oct 2010175078.103.51$13,668
Sep 2010175072.633.98$12,710
Aug 2010169073.684.42$12,452
Jul 2010174072.554.74$12,624
Jun 20100070.364.91$0
May 2010171071.124.24$12,162
Apr 2010175081.694.12$14,296
Mar 2010173078.394.39$13,561
Feb 2010172073.585.44$12,656
Jan 2010172074.365.96$12,790
Dec 20090071.445.48$0
Nov 2009166074.593.75$12,382
Oct 2009170072.544.11$12,332
Sep 2009172065.543.06$11,273
Aug 2009173067.423.22$11,664
Jul 2009173061.133.46$10,575
Jun 20090066.163.90$0
May 2009170054.743.93$9,306
Apr 2009174046.773.59$8,138
Mar 2009173042.144.06$7,290
Feb 2009163032.814.63$5,348
Jan 2009177035.865.37$6,347
Dec 20080037.105.98$0
Nov 2008165055.496.86$9,156
Oct 2008174075.246.92$13,092
Sep 20081720101.767.88$17,503
Aug 20081700114.228.48$19,417
Jul 200800131.0811.39$0
Jun 20081590131.3313.03$20,881
May 20081680123.1711.57$20,693
Apr 20081690110.3110.45$18,642
Mar 20081660101.909.66$16,915
Feb 2008167092.538.77$15,453
Jan 2008167090.388.21$15,093
Dec 2007171088.337.30$15,104
Nov 2007173091.677.29$15,859
Oct 2007171082.856.92$14,167
Sep 2007171075.846.24$12,969
Aug 20070069.066.39$0
Jul 2007331070.906.39$23,468
Jun 20070062.007.55$0
May 2007337058.747.85$19,795
Apr 20070059.617.81$0
Mar 2007164056.927.30$9,335
Feb 2007168055.108.22$9,257
Jan 20070050.306.73$0
Dec 2006172056.656.92$9,744
Nov 2006171054.207.62$9,268
Oct 2006173054.906.01$9,498
Sep 2006169060.085.04$10,154
Aug 2006168068.717.34$11,543
Jul 2006168069.376.34$11,654
Jun 2006168066.286.38$11,135
May 2006171066.016.42$11,288
Apr 2006170064.397.36$10,946
Mar 2006175056.707.08$9,923
Feb 20060057.597.75$0
Jan 2006171060.598.93$10,361
Dec 2005173054.9413.42$9,505
Nov 2005168054.6910.59$9,188
Oct 2005168058.3413.80$9,801
Sep 2005159061.4512.08$9,771
Aug 2005169061.519.80$10,395
Jul 2005159055.697.84$8,855
Jun 2005172052.337.38$9,001
May 2005176045.226.65$7,959
Apr 2005168049.207.36$8,266
Mar 2005169050.377.15$8,513
Feb 2005168045.226.31$7,597
Jan 2005175043.166.32$7,553
Dec 20040039.866.75$0
Nov 2004170045.286.33$7,698
Oct 2004175049.706.52$8,698
Sep 2004177043.245.28$7,653
Aug 2004176042.375.55$7,457
Jul 2004177038.286.08$6,776
Jun 2004168036.106.43$6,065
May 2004172037.486.49$6,447
Apr 2004165034.475.86$5,688
Mar 2004182034.365.53$6,254
Feb 2004177032.455.51$5,744
Jan 2004178032.036.30$5,701
Dec 2003170030.266.30$5,144
Nov 2003337028.804.60$9,706
Oct 2003173028.174.76$4,873
Sep 2003163026.314.75$4,289
Aug 20030029.765.13$0
Jul 2003176029.415.17$5,176
Jun 2003342028.565.98$9,768
May 2003176026.595.97$4,680
Apr 2003158026.675.41$4,214
Mar 2003176031.146.10$5,481
Feb 2003172033.487.93$5,759
Jan 2003176030.315.58$5,335
Dec 2002340026.914.85$9,149
Nov 2002175024.664.14$4,316
Oct 2002173126.464.23$4,582
Sep 2002174027.443.64$4,775
Aug 2002330125.963.16$8,570
Jul 2002171124.583.06$4,206
Jun 2002176123.733.34$4,180
May 2002165124.663.58$4,072
Apr 2002345123.653.51$8,163
Mar 2002524022.003.10$11,528
Feb 20020118.222.38$2
Jan 2002174117.172.38$2,990
Dec 20010016.932.36$0
Nov 2001173118.072.41$3,129
Oct 2001363019.782.53$7,180
Sep 2001163124.262.25$3,957
Aug 2001166124.873.05$4,131
Jul 2001341123.933.20$8,163
Jun 2001173124.563.82$4,253
May 2001336125.524.31$8,579
Apr 2001179124.685.34$4,423
Mar 2001354124.545.38$8,693
Feb 2001182127.755.77$5,056
Jan 2001347127.478.40$9,540
Dec 2000352126.889.12$9,471
Nov 2000158132.215.66$5,095
Oct 2000348131.235.15$10,873
Sep 2000167131.875.19$5,327
Aug 2000340129.644.54$10,082
Jul 2000336128.534.09$9,590
Jun 2000179129.304.40$5,249
May 2000330127.263.68$8,999
Apr 2000350124.513.12$8,582
Mar 2000174128.422.86$4,948
Feb 2000349127.622.73$9,642
Jan 2000352125.272.48$8,898
Dec 1999350124.282.42$8,500
Nov 1999349123.192.43$8,096
Oct 1999168120.982.80$3,527
Sep 1999344121.752.62$7,485
Aug 1999172119.262.88$3,316
Jul 1999326117.892.37$5,835
Jun 1999175115.942.36$2,792
May 1999348115.792.32$5,497
Apr 1999335115.102.21$5,061
Mar 1999178112.471.84$2,222
Feb 199934719.981.82$3,465
Jan 1999353110.381.90$3,666
Dec 199818119.201.77$1,667
Nov 1998344110.892.19$3,748
Oct 1998337112.421.97$4,188
Sep 1998326112.592.08$4,106
Aug 1998178111.301.91$2,013
Jul 1998347111.742.24$4,076
Jun 1998319111.242.24$3,588
May 1998325112.622.21$4,104
Apr 1998338113.042.51$4,410
Mar 1998179112.802.31$2,294
Feb 1998346113.952.30$4,829
Jan 1998341114.702.15$5,015
Dec 1997333116.322.41$5,437
Nov 1997340118.193.09$6,188
Oct 1997331119.253.15$6,375
Sep 1997165117.742.95$2,930
Aug 1997329117.862.55$5,878
Jul 1997350117.582.25$6,155
Jun 1997354117.242.26$6,105
May 1997349118.972.31$6,623
Apr 1997319117.882.08$5,706
Mar 1997332118.951.94$6,293
Feb 1997357120.492.21$7,317
Jan 1997333123.483.54$7,822
Dec 1996331123.32$7,719
Nov 1996349121.97$7,668
Oct 1996334123.31$7,786
Sep 1996351122.22$7,799
Aug 1996330120.26$6,686
Jul 1996338119.55$6,608
Jun 1996178118.73$3,334
May 1996348119.43$6,762
Apr 1996325121.51$6,991
Mar 1996328119.38$6,357
Feb 1996517116.98$8,779
Jan 1996176117.07$3,004
Dec 1995362117.19$6,223
Nov 1995355116.00$5,680
Oct 1995362115.43$5,586
Sep 1995351116.18$5,679
Aug 1995369115.92$5,874
Jul 1995519115.24$7,910
Jun 1995361116.41$5,924
May 1995192117.56$3,372
Apr 1995356117.73$6,312
Mar 1995348116.44$5,721
Feb 1995353116.58$5,853
Jan 1995351115.92$5,588
Dec 1994357115.03$5,366
Nov 1994331115.90$5,263
Oct 1994172115.58$2,680
Sep 1994338115.29$5,168
Aug 1994343116.13$5,533
Jul 1994153117.56$2,687
Jun 1994318117.09$5,435
May 1994154115.88$2,446
Apr 1994317114.14$4,482
Mar 1994479112.46$5,968
Feb 1994302112.50$3,775
Jan 1994164112.66$2,076
Dec 1993328112.33$4,044
Nov 1993165114.49$2,391
Oct 1993165115.85$2,615
Sep 1993333115.03$5,005
Aug 1993170115.66$2,662
Jul 1993343115.46$5,303
Jun 1993333116.79$5,591
May 1993498117.68$8,805
Apr 1993326118.05$5,884
Mar 1993164118.14$2,975
Feb 1993337117.90$6,032
Jan 1993165116.93$2,793

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 2019 — as filed, then multipliedworked
Oil                  172 bbl  × $ 58.48 =    $10,059
Casinghead gas         0 Mcf  × $  2.74 =         $0

────────────────────────────────────────────────────
Month total                                  $10,059

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/16886 is the state's own key, not one this site invented.