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WALKER, C.R.

Operated by PETROSAURUS, INC. (P-5 660025) in the SALT FLAT field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 11918District 01Field 79905001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$399 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 SALT FLAT field

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 415 leases and 1,904 wells, and the rule below applies to all of them.

Discovered
1928-05-28
as the register files it
Field class
Oil and gas
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 acres. The field rule took effect on 1952-08-04.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: “100 % % DELIVERABILITY SHOULD BE USED (DAMEKI NYERI).”

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
OilDisposition12,402 bbl$345,578
Casinghead gasProduction34,088 Mcf$53,320
Total$398,898

21,958 Mcf of this lease's gas, across 47 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 (10)

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 29.7108, -97.6101. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

29.71056, -97.60913 · 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%
10 of 10 wells
With a plug date
100.0%
10 of 10 wells
Median depth
2,717 ft
10 wells filed one
Completion to plug
37.4 years
median over 10 wells

What the state filed about each well

On the RRC proration schedule
10100.0%
A plug date is filed
10100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
10100.0%
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

Total depth in feet, 10 of 10 wells. Median 2,717 ft, with the middle half between 2,711 and 2,730 ft; the shallowest is 2,688 ft and the deepest 2,741 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, 10 of 10 wells, Oct 1987 – Apr 1990. 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 1987 – Apr 1990
10 of 10 wells
Plug dates filed
Dec 2025
10 of 10 wells

Last completion to plug: a median of 37.4 years across the 10 wells that filed both dates, with the middle half between 36.7 years and 38.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-05534464112,725 ftApr 1990Dec 2025Yes
42-05534465102,731 ftFeb 1990Dec 2025Yes
42-0553443192,688 ftJul 1989Dec 2025Yes
42-0553435862,711 ftAug 1988Dec 2025Yes
42-0553435752,696 ftAug 1988Dec 2025Yes
42-0553435642,712 ftJul 1988Dec 2025Yes
42-0553435972,711 ftMay 1988Dec 2025Yes
42-0553430532,722 ftNov 1987Dec 2025Yes
42-0553430412,739 ftNov 1987Dec 2025Yes
42-0553430322,741 ftOct 1987Dec 2025Yes

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 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 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
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 2017146049.292.98$7,196
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 201726042.493.09$1,105
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
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 201596043.433.10$4,169
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 201404995.895.06$248
Feb 20140097.406.19$0
Jan 201414090.404.86$1,266
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 201340097.423.78$3,897
Sep 2013430104.113.72$4,477
Aug 2013290104.253.52$3,023
Jul 2013580102.523.72$5,946
Jun 201319094.403.93$1,794
May 201355094.834.15$5,216
Apr 20130093.964.28$0
Mar 201383093.623.91$7,770
Feb 201350091.233.42$4,562
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 201297089.383.40$8,670
Sep 20120094.672.92$0
Aug 201234092.662.91$3,150
Jul 20120085.133.02$0
Jun 201267079.822.52$5,348
May 20120091.612.49$0
Apr 2012670101.652.00$6,811
Mar 2012370105.052.22$3,887
Feb 201200101.102.57$0
Jan 201234098.092.73$3,335
Dec 20110096.873.24$0
Nov 201130095.723.31$2,872
Oct 201184084.983.65$7,138
Sep 201129083.623.99$2,425
Aug 201129083.404.15$2,419
Jul 20114094.144.52$377
Jun 20118092.904.64$743
May 20110098.134.40$0
Apr 2011150105.964.33$1,589
Mar 20117096.364.06$675
Feb 20118085.644.18$685
Jan 201114086.504.59$1,211
Dec 20108085.734.35$686
Nov 20100080.843.80$0
Oct 20107078.103.51$547
Sep 20107072.633.98$508
Aug 20107073.684.42$516
Jul 201015072.554.74$1,088
Jun 201022070.364.91$1,548
May 20107071.124.24$498
Apr 201014081.694.12$1,144
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20097074.593.75$522
Oct 20097072.544.11$508
Sep 20097065.543.06$459
Aug 20097067.423.22$472
Jul 200929061.133.46$1,773
Jun 200929066.163.90$1,919
May 200914054.743.93$766
Apr 200914046.773.59$655
Mar 20098042.144.06$337
Feb 20090032.814.63$0
Jan 20097035.865.37$251
Dec 200815037.105.98$557
Nov 20080055.496.86$0
Oct 200816075.246.92$1,204
Sep 200800101.767.88$0
Aug 200870114.228.48$800
Jul 2008140131.0811.39$1,835
Jun 2008140131.3313.03$1,839
May 200870123.1711.57$862
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20088092.538.77$740
Jan 20087090.388.21$633
Dec 20070088.337.30$0
Nov 200712091.677.29$1,100
Oct 20078082.856.92$663
Sep 200715075.846.24$1,138
Aug 200715069.066.39$1,036
Jul 20070070.906.39$0
Jun 200715062.007.55$930
May 20070058.747.85$0
Apr 200719059.617.81$1,133
Mar 2007208756.927.30$1,774
Feb 20072010855.108.22$1,989
Jan 200707350.306.73$491
Dec 200607956.656.92$547
Nov 2006478254.207.62$3,172
Oct 2006175554.906.01$1,264
Sep 2006256960.085.04$1,850
Aug 200647968.717.34$855
Jul 2006606169.376.34$4,549
Jun 200607566.286.38$479
May 2006408766.016.42$3,199
Apr 2006205364.397.36$1,678
Mar 2006154656.707.08$1,176
Feb 2006295157.597.75$2,065
Jan 2006306060.598.93$2,354
Dec 200576454.9413.42$1,243
Nov 200508354.6910.59$879
Oct 200579158.3413.80$1,664
Sep 20054210261.4512.08$3,813
Aug 200509461.519.80$921
Jul 200541055.697.84$2,283
Jun 2005409352.337.38$2,780
May 2005225145.226.65$1,334
Apr 200541049.207.36$2,017
Mar 2005119550.377.15$1,234
Feb 200589145.226.31$936
Jan 2005266143.166.32$1,508
Dec 20042210339.866.75$1,572
Nov 2004138645.286.33$1,133
Oct 200439049.706.52$1,938
Sep 20046230043.245.28$4,266
Aug 2004830042.375.55$2,004
Jul 20042630038.286.08$2,821
Jun 2004030036.106.43$1,930
May 20041230037.486.49$2,398
Apr 2004930034.475.86$2,068
Mar 20042330034.365.53$2,449
Feb 2004030032.455.51$1,653
Jan 20041530032.036.30$2,370
Dec 2003030030.266.30$1,890
Nov 2003030028.804.60$1,379
Oct 2003030028.174.76$1,428
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 200364028.565.98$1,828
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 200241023.653.51$970
Mar 200243022.003.10$946
Feb 200260018.222.38$1,093
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 200151019.782.53$1,009
Sep 20010024.262.25$0
Aug 200131024.873.05$771
Jul 200146023.933.20$1,101
Jun 20010024.563.82$0
May 200193025.524.31$2,373
Apr 200155024.685.34$1,357
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 2000161028.534.09$4,593
Jun 20000029.304.40$0
May 200088027.263.68$2,399
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 2000208027.622.73$5,745
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 199921023.192.43$487
Oct 199998020.982.80$2,056
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 1998009.201.77$0
Nov 19980010.892.19$0
Oct 199823012.421.97$286
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 199890011.742.24$1,057
Jun 19988325711.242.24$1,508
May 199811423012.622.21$1,946
Apr 199810927613.042.51$2,113
Mar 199830530512.802.31$4,608
Feb 199810630613.952.30$2,182
Jan 199811136014.702.15$2,407
Dec 199714335916.322.41$3,199
Nov 199711935418.193.09$3,258
Oct 199711935419.253.15$3,406
Sep 199713842517.742.95$3,704
Aug 199715145317.862.55$3,854
Jul 199716349317.582.25$3,973
Jun 199717346917.242.26$4,041
May 199726651118.972.31$6,226
Apr 199730140917.882.08$6,234
Mar 199711423018.951.94$2,606
Feb 199717926620.492.21$4,254
Jan 1997034523.483.54$1,221
Dec 19960023.32—$0
Nov 1996044421.97—$0
Oct 199618245023.31—$4,242
Sep 1996037922.22—$0
Aug 1996035220.26—$0
Jul 199617737319.55—$3,460
Jun 1996034418.73—$0
May 1996041719.43—$0
Apr 1996041521.51—$0
Mar 199618038019.38—$3,488
Feb 1996040616.98—$0
Jan 199616848417.07—$2,868
Dec 1995044017.19—$0
Nov 199515947716.00—$2,544
Oct 199518051215.43—$2,777
Sep 199517655316.18—$2,848
Aug 1995050215.92—$0
Jul 199517650315.24—$2,682
Jun 199517243116.41—$2,823
May 199515550317.56—$2,722
Apr 199518148617.73—$3,209
Mar 1995049216.44—$0
Feb 199516140816.58—$2,669
Jan 199518044115.92—$2,866
Dec 199418247615.03—$2,735
Nov 199416950915.90—$2,687
Oct 1994043815.58—$0
Sep 199416248215.29—$2,477
Aug 199417040516.13—$2,742
Jul 199416711417.56—$2,933
Jun 199415232917.09—$2,598
May 199417127415.88—$2,715
Apr 199416848014.14—$2,376
Mar 199417154312.46—$2,131
Feb 1994049812.50—$0
Jan 199417152812.66—$2,165
Dec 199317253312.33—$2,121
Nov 199316652214.49—$2,405
Oct 199316760315.85—$2,647
Sep 199332860815.03—$4,930
Aug 199316157115.66—$2,521
Jul 199332557615.46—$5,025
Jun 1993051316.79—$0
May 199315553417.68—$2,740
Apr 199334255818.05—$6,173
Mar 1993061418.14—$0
Feb 199337750717.90—$6,748
Jan 1993055116.93—$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.

Oct 2017 — as filed, then multipliedworked
Oil                  146 bbl  × $ 49.29 =     $7,196
Casinghead gas         0 Mcf  × $  2.98 =         $0

────────────────────────────────────────────────────
Month total                                   $7,196

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/11918 is the state's own key, not one this site invented.