WALKER -A-

Operated by SUN EXPLORATION, INC. (P-5 829289) in the RICHARD KING (5500) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 8580District 04Field 76410640OilCasinghead gasSaveExport
Value, all time
$1.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$42 k
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 8 leases and 13 wells, and the rule below applies to all of them.

Discovered
1975-06-25
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: RICHARD KING (FRIO CONS) 76410-100

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
OilDisposition23,658 bbl$1,359,259
Casinghead gasProduction27,691 Mcf$66,925
Total$1,426,183

7,043 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 27.8224, -97.8767. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

27.82362, -97.87642 · 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
50.0%
2 of 4 wells
With a plug date
50.0%
2 of 4 wells
Median depth
6,078 ft
4 wells filed one
Completion to plug
28.3 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
250.0%
A plug date is filed
250.0%
BothOn the schedule and plugged. Neither fact cancels the other.
250.0%
NeitherNo plug date, and not on the schedule.
250.0%

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 5,641 and 6,510 ft, median 6,078 ft, over the 4 wells that filed a depth.

Completions filed
Jul 1975 – Dec 1982
4 of 4 wells
Plug dates filed
Aug 2010
2 of 4 wells; 2 filed none

Last completion to plug: a median of 28.3 years across the 2 wells that filed both dates, with the middle half between 28.0 years and 28.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-3553077355,641 ftDec 1982Aug 2010Yes
42-3553069336,506 ftAug 1981Aug 2010Yes
42-3553085865,650 ftMay 1977
42-3553062716,510 ftJul 1975

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 2026970106.413.05$10,322
Apr 2026100098.932.87$9,893
Mar 20260089.753.15$0
Feb 2026102063.503.75$6,477
Jan 20260059.138.00$0
Dec 202593056.664.41$5,269
Nov 20250058.593.93$0
Oct 202585059.383.30$5,047
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 202579066.743.32$5,272
Jun 20250066.483.13$0
May 202548060.553.23$2,906
Apr 2025116062.363.54$7,234
Mar 20250067.704.27$0
Feb 202584070.884.34$5,954
Jan 20250074.324.28$0
Dec 202490068.993.12$6,209
Nov 202481069.052.20$5,593
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 202468075.632.06$5,143
Jul 20240079.932.15$0
Jun 202484078.082.63$6,559
May 20240078.812.20$0
Apr 202483084.451.66$7,009
Mar 202483080.301.55$6,665
Feb 202481076.091.78$6,163
Jan 20240073.023.30$0
Dec 202349071.262.61$3,492
Nov 202388077.892.81$6,854
Oct 202384085.443.09$7,177
Sep 202383089.042.74$7,390
Aug 20230080.522.67$0
Jul 202382074.852.64$6,138
Jun 20230068.962.26$0
May 202375070.622.23$5,297
Apr 202381078.122.24$6,328
Mar 202387072.852.39$6,338
Feb 202388075.112.47$6,610
Jan 20230076.533.39$0
Dec 202283076.415.73$6,342
Nov 202285085.005.65$7,225
Oct 202289087.185.86$7,759
Sep 20220084.888.16$0
Aug 202285094.529.13$8,034
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 2022860108.885.08$9,364
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 202177071.323.90$5,492
Nov 20210077.435.24$0
Oct 202179079.795.71$6,303
Sep 20210069.865.35$0
Aug 202187066.024.22$5,744
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 202180063.483.02$5,078
Apr 202178060.362.76$4,708
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 202080044.642.68$3,571
Nov 20200038.772.71$0
Oct 202079036.972.48$2,921
Sep 20200037.091.99$0
Aug 202090039.982.39$3,598
Jul 20200038.371.83$0
Jun 202088034.901.69$3,071
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 202077030.341.86$2,336
Feb 20200049.881.98$0
Jan 202080057.252.09$4,580
Dec 20190059.012.30$0
Nov 201980055.302.75$4,424
Oct 20190053.472.42$0
Sep 201974055.052.66$4,074
Aug 20190053.112.30$0
Jul 2019743456.272.46$4,248
Jun 201903152.782.49$77
May 2019792858.482.74$4,697
Apr 2019852862.632.75$5,401
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 201977046.033.23$3,544
Dec 201885046.594.19$3,960
Nov 201883052.934.24$4,393
Oct 20180061.443.40$0
Sep 201881059.543.11$4,823
Aug 20180059.403.07$0
Jul 201881065.142.93$5,276
Jun 201885060.183.08$5,115
May 20180065.382.90$0
Apr 201887063.842.90$5,554
Mar 201875061.222.79$4,592
Feb 20180661.782.77$17
Jan 2018902062.874.01$5,738
Dec 2017872957.272.92$5,067
Nov 201783055.423.12$4,600
Oct 201791049.292.98$4,485
Sep 20170047.523.09$0
Aug 201785045.373.00$3,856
Jul 201789043.873.09$3,904
Jun 201781042.493.09$3,442
May 201783045.373.26$3,766
Apr 201784047.933.21$4,026
Mar 201788046.772.98$4,116
Feb 201780050.452.95$4,036
Jan 201784049.413.42$4,150
Dec 201684048.763.72$4,096
Nov 201686042.492.64$3,654
Oct 2016166546.193.09$7,683
Sep 201601941.553.10$59
Aug 201605041.442.92$146
Jul 2016656741.622.92$2,901
Jun 2016847345.352.69$4,005
May 2016827342.521.99$3,632
Apr 2016838536.561.99$3,204
Mar 201616510933.011.79$5,642
Feb 20168312026.472.06$2,445
Jan 2016857327.352.36$2,497
Dec 2015878232.362.00$2,979
Nov 2015828638.792.17$3,367
Oct 20158910443.552.43$4,128
Sep 2015837842.992.76$3,783
Aug 201506240.162.87$178
Jul 201517612048.152.95$8,828
Jun 201508756.152.88$251
May 2015889155.212.96$5,127
Apr 20158212049.822.71$4,410
Mar 201517913442.892.93$8,071
Feb 20157714044.662.98$3,855
Jan 201517815843.433.10$8,220
Dec 20148317554.693.59$5,168
Nov 20148717970.464.25$6,891
Oct 201491078.303.90$7,125
Sep 20148316986.164.05$7,835
Aug 201417516189.394.04$16,293
Jul 201416811596.564.18$16,703
Jun 2014014798.164.74$696
May 201416618194.734.73$16,581
Apr 201417713895.944.81$17,645
Mar 20149217095.895.06$9,682
Feb 20148915897.406.19$9,647
Jan 201426318590.404.86$24,674
Dec 20138620491.824.35$8,785
Nov 201315519988.853.74$14,516
Oct 201317013897.423.78$17,083
Sep 20130164104.113.72$610
Aug 2013168164104.253.52$18,092
Jul 2013830102.523.72$8,509
Jun 201326226794.403.93$25,783
May 20138720594.834.15$9,101
Apr 20138817393.964.28$9,009
Mar 20138918593.623.91$9,056
Feb 201316417591.233.42$15,560
Jan 20138720691.603.42$8,674
Dec 201217223886.773.42$15,738
Nov 20128722586.953.62$8,380
Oct 201217427589.383.40$16,487
Sep 201217626194.672.92$17,424
Aug 201217921692.662.91$17,214
Jul 20128927185.133.02$8,395
Jun 201224127579.822.52$19,929
May 201217325591.612.49$16,483
Apr 2012179371101.652.00$18,936
Mar 201290444105.052.22$10,441
Feb 2012165503101.102.57$17,974
Jan 201215125998.092.73$15,520
Dec 201117625996.873.24$17,888
Nov 201124929195.723.31$24,798
Oct 201118130884.983.65$16,505
Sep 201116323383.623.99$14,559
Aug 201117126283.404.15$15,349
Jul 201118620894.144.52$18,450
Jun 201115915092.904.64$15,467
May 201117529598.134.40$18,472
Apr 2011168304105.964.33$19,119
Mar 201117831896.364.06$18,442
Feb 201119228885.644.18$17,647
Jan 201128533486.504.59$26,185
Dec 201019641585.734.35$18,607
Nov 201019153780.843.80$17,479
Oct 201024333478.103.51$20,150
Sep 201022524972.633.98$17,333
Aug 201016327473.684.42$13,221
Jul 201014518772.554.74$11,405
Jun 201014420770.364.91$11,148
May 201025427371.124.24$19,221
Apr 201014332281.694.12$13,009
Mar 2010146078.394.39$11,445
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
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 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 200571058.3413.80$4,142
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
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 200233024.664.14$814
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 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
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 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 200021028.422.86$597
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 1999112020.982.80$2,350
Sep 199922021.752.62$479
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 199994015.102.21$1,419
Mar 199905812.471.84$107
Feb 199908059.981.82$1,463
Jan 1999071010.381.90$1,349
Dec 1998009.201.77$0
Nov 19984010.892.19$44
Oct 199822012.421.97$273
Sep 1998407612.592.08$662
Aug 1998043211.301.91$824
Jul 19988850411.742.24$2,161
Jun 19986763711.242.24$2,178
May 199813387312.622.21$3,605
Apr 199806413.042.51$160
Mar 19980512.802.31$12
Feb 1998532413.952.30$795
Jan 19980614.702.15$13
Dec 19970716.322.41$17
Nov 199741918.193.09$774
Oct 19970019.253.15$0
Sep 19970217.742.95$6
Aug 199740017.862.55$714
Jul 199706117.582.25$137
Jun 19978110717.242.26$1,638
May 199710111918.972.31$2,191
Apr 19978215217.882.08$1,783
Mar 199711918818.951.94$2,620
Feb 1997829920.492.21$1,899
Jan 1997839923.483.54$2,299
Dec 199612419023.32$2,892
Nov 199612212921.97$2,680
Oct 19968314123.31$1,935
Sep 199612310922.22$2,733
Aug 19961031420.26$2,087
Jul 199614312719.55$2,796
Jun 19968217518.73$1,536
May 199612218219.43$2,370
Apr 199612016721.51$2,581
Mar 199612620219.38$2,442
Feb 19964121216.98$696
Jan 199610513717.07$1,792
Dec 199512614717.19$2,166
Nov 19951059716.00$1,680
Oct 1995417215.43$633
Sep 199512414716.18$2,006
Aug 199510214315.92$1,624
Jul 199512115115.24$1,844
Jun 19958311316.41$1,362
May 199516722217.56$2,933
Apr 19958314617.73$1,472
Mar 199514718016.44$2,417
Feb 199512729016.58$2,106
Jan 199513016615.92$2,070
Dec 199415315915.03$2,300
Nov 199410815115.90$1,717
Oct 199410915015.58$1,698
Sep 199412814815.29$1,957
Aug 199413022416.13$2,097
Jul 199415521617.56$2,722
Jun 19946314717.09$1,077
May 199413017815.88$2,064
Apr 1994658014.14$919
Mar 199415514012.46$1,931
Feb 19941122012.50$1,400
Jan 1994871912.66$1,101
Dec 1993648112.33$789
Nov 19936612214.49$956
Oct 199311421715.85$1,807
Sep 19931951815.03$2,931
Aug 19931653915.66$2,584
Jul 199316513615.46$2,551
Jun 199312212916.79$2,048
May 199314217917.68$2,511
Apr 199316623018.05$2,996
Mar 199318516818.14$3,356
Feb 199318519617.90$3,312
Jan 199314423716.93$2,438

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 2026 — as filed, then multipliedworked
Oil                   97 bbl  × $106.41 =    $10,322
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $10,322

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. 04/O/8580 is the state's own key, not one this site invented.