FIRST NATIONAL TRUST

Operated by COURSON OIL & GAS, INC. (P-5 182785) in the PSHIGODA (DOUGLAS) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4807District 10Field 73334166NGPA filingOilCasinghead gasSaveExport
Value, all time
$9.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$194 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 6 leases and 15 wells, and the rule below applies to all of them.

Discovered
1957-06-29
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
NGPA4none

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
OilDisposition254,519 bbl$9,250,913
Casinghead gasProduction34,955 Mcf$101,925
Total$9,352,838

10,603 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 (7)

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 36.2259, -100.7725. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

36.22532, -100.77399 · 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
42.9%
3 of 7 wells
With a plug date
28.6%
2 of 7 wells
Median depth
5,850 ft
7 wells filed one
Completion to plug
30.1 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
342.9%
A plug date is filed
228.6%
BothOn the schedule and plugged. Neither fact cancels the other.
228.6%
NeitherNo plug date, and not on the schedule.
457.1%

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 5,800 and 10,100 ft, median 5,850 ft, over the 7 wells that filed a depth.

Completions filed
May 1981 – Feb 2021
7 of 7 wells
Plug dates filed
Apr 2009 – Jan 2022
2 of 7 wells; 5 filed none

Last completion to plug: a median of 30.1 years across the 2 wells that filed both dates, with the middle half between 26.1 years and 34.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

7 wells

42-3573093925717,150 ftFeb 2021
42-3573204495715,800 ftNov 1993Yes
42-3573185085715,850 ftApr 1987Apr 2009Yes
42-3573167375715,850 ftFeb 1985
42-3573164465715,825 ftJan 1985
42-3573143355715,800 ftNov 1983Jan 2022Yes
42-35730888157110,100 ftMay 1981

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 2026180124106.413.05$19,531
Apr 202636112098.932.87$36,058
Mar 2026012289.753.15$384
Feb 202636111263.503.75$23,344
Jan 202618211259.138.00$11,657
Dec 202535912456.664.41$20,888
Nov 2025012058.593.93$471
Oct 202536212459.383.30$21,905
Sep 202535712062.743.08$22,767
Aug 2025012463.933.01$374
Jul 202536112466.743.32$24,504
Jun 202518012066.483.13$12,342
May 202518012060.553.23$11,287
Apr 202536012062.363.54$22,875
Mar 202518110867.704.27$12,715
Feb 202508670.884.34$373
Jan 202536710874.324.28$27,738
Dec 202435112068.993.12$24,590
Nov 202417512069.052.20$12,348
Oct 202436212471.372.28$26,119
Sep 202436112069.612.36$25,413
Aug 20241817475.632.06$13,842
Jul 20241797879.932.15$14,475
Jun 202417711678.082.63$14,126
May 202436810078.812.20$29,222
Apr 202418210484.451.66$15,542
Mar 202435512480.301.55$28,698
Feb 202436511676.091.78$27,980
Jan 2024010273.023.30$336
Dec 202336512471.262.61$26,334
Nov 202318212077.892.81$14,513
Oct 202336312485.443.09$31,398
Sep 202318212489.042.74$16,544
Aug 202335412480.522.67$28,836
Jul 202318212474.852.64$13,950
Jun 20233636268.962.26$25,173
May 202336212070.622.23$25,832
Apr 202336312078.122.24$28,626
Mar 202336412472.852.39$26,814
Feb 202318411275.112.47$14,096
Jan 202337512476.533.39$29,119
Dec 202218310876.415.73$14,602
Nov 202236512085.005.65$31,703
Oct 202236412487.185.86$32,461
Sep 202218512084.888.16$16,682
Aug 202236312494.529.13$35,443
Jul 2022183124101.587.54$19,524
Jun 2022357120115.097.98$42,044
May 2022360124109.378.43$40,419
Apr 2022360120104.226.84$38,340
Mar 2022181114108.885.08$20,286
Feb 202218311291.054.86$17,206
Jan 202254612481.844.54$45,247
Dec 202118210671.323.90$13,394
Nov 202118012077.435.24$14,566
Oct 202153812479.795.71$43,636
Sep 202117011669.865.35$12,497
Aug 202135812066.024.22$24,142
Jul 20213616270.783.98$25,798
Jun 20215416069.493.38$37,797
May 202154612463.483.02$35,034
Apr 202155612060.362.76$33,891
Mar 202156212461.302.72$34,788
Feb 202103657.805.55$200
Jan 202106250.412.81$174
Dec 20201816244.642.68$8,246
Nov 202006038.772.71$162
Oct 20201786236.972.48$6,734
Sep 20201695837.091.99$6,384
Aug 20201806039.982.39$7,340
Jul 20201775638.371.83$6,894
Jun 202005634.901.69$95
May 202005016.921.81$91
Apr 202004814.751.80$87
Mar 202006030.341.86$111
Feb 202005849.881.98$115
Jan 20201926257.252.09$11,122
Dec 20191875859.012.30$11,169
Nov 201905855.302.75$160
Oct 20191876053.472.42$10,144
Sep 201906055.052.66$159
Aug 201906053.112.30$138
Jul 201906256.272.46$153
Jun 20191845852.782.49$9,856
May 201906258.482.74$170
Apr 20191784262.632.75$11,264
Mar 201906256.803.06$190
Feb 20191825650.852.79$9,411
Jan 201906246.033.23$200
Dec 20181736046.594.19$8,311
Nov 20181846052.934.24$9,993
Oct 201806261.443.40$211
Sep 20181796059.543.11$10,844
Aug 20181796259.403.07$10,823
Jul 20181696265.142.93$11,190
Jun 20183426060.183.08$20,766
May 20181766265.382.90$11,687
Apr 20181666063.842.90$10,771
Mar 20183576261.222.79$22,028
Feb 20181815461.782.77$11,332
Jan 20181756062.874.01$11,243
Dec 20171805857.272.92$10,478
Nov 20171955855.423.12$10,988
Oct 20173816249.292.98$18,964
Sep 20172156047.523.09$10,402
Aug 20173996245.373.00$18,289
Jul 20172935843.873.09$13,033
Jun 20173896042.493.09$16,714
May 20173506245.373.26$16,082
Apr 20172235847.933.21$10,875
Mar 20174086246.772.98$19,267
Feb 20172295650.452.95$11,718
Jan 20171774449.413.42$8,896
Dec 20163835848.763.72$18,891
Nov 20161946042.492.64$8,402
Oct 20164115846.193.09$19,163
Sep 20162166041.553.10$9,161
Aug 20163826241.442.92$16,011
Jul 20162216241.622.92$9,379
Jun 20162036045.352.69$9,367
May 20163906242.521.99$16,706
Apr 20164106036.561.99$15,109
Mar 20162456233.011.79$8,199
Feb 20164265826.472.06$11,396
Jan 20161746227.352.36$4,905
Dec 20153556032.362.00$11,608
Nov 20152175638.792.17$8,539
Oct 20154326043.552.43$18,959
Sep 20152006042.992.76$8,764
Aug 20153816240.162.87$15,479
Jul 20153766248.152.95$18,287
Jun 20152095456.152.88$11,891
May 20154096255.212.96$22,764
Apr 20152466049.822.71$12,418
Mar 20153646242.892.93$15,794
Feb 201505444.662.98$161
Jan 20153736243.433.10$16,392
Dec 20141956054.693.59$10,880
Nov 20141875870.464.25$13,423
Oct 20143666078.303.90$28,892
Sep 20143626086.164.05$31,433
Aug 20141926089.394.04$17,405
Jul 20141815296.564.18$17,695
Jun 20145606098.164.74$55,254
May 20143736294.734.73$35,627
Apr 20142635695.944.81$25,502
Mar 20143666295.895.06$35,409
Feb 20141955697.406.19$19,340
Jan 20141871890.404.86$16,992
Dec 20131856291.824.35$17,257
Nov 20133616088.853.74$32,299
Oct 20133696097.423.78$36,175
Sep 2013060104.113.72$223
Aug 201317662104.253.52$18,566
Jul 201315862102.523.72$16,429
Jun 20131836094.403.93$17,511
May 20133426294.834.15$32,689
Apr 20133655893.964.28$34,544
Mar 20133636293.623.91$34,227
Feb 201304691.233.42$157
Jan 20135265891.603.42$48,380
Dec 20123686286.773.42$32,143
Nov 20123586086.953.62$31,346
Oct 201206289.383.40$211
Sep 20125345894.672.92$50,723
Aug 20121576292.662.91$14,728
Jul 20121794485.133.02$15,371
Jun 201203479.822.52$86
May 20123645691.612.49$33,485
Apr 201215660101.652.00$15,977
Mar 201218462105.052.22$19,467
Feb 201235358101.102.57$35,837
Jan 20123425898.092.73$33,705
Dec 20113746296.873.24$36,430
Nov 20113576095.723.31$34,371
Oct 20113406084.983.65$29,112
Sep 20113606083.623.99$30,342
Aug 20111736283.404.15$14,685
Jul 20113306294.144.52$31,346
Jun 20113616092.904.64$33,815
May 20113356298.134.40$33,147
Apr 201134860105.964.33$37,134
Mar 20113606096.364.06$34,933
Feb 20113605485.644.18$31,056
Jan 20113506086.504.59$30,550
Dec 201006085.734.35$261
Nov 20101836080.843.80$15,021
Oct 20101706278.103.51$13,495
Sep 20105456072.633.98$39,822
Aug 20101826273.684.42$13,684
Jul 20105376272.554.74$39,253
Jun 20103596070.364.91$25,554
May 20103536271.124.24$25,368
Apr 20101695881.694.12$14,045
Mar 20103666278.394.39$28,963
Feb 20105525673.585.44$40,921
Jan 20101856274.365.96$14,126
Dec 20093656271.445.48$26,416
Nov 20093676074.593.75$27,600
Oct 20095425272.544.11$39,530
Sep 20093696065.543.06$24,368
Aug 20093666267.423.22$24,875
Jul 20095396261.133.46$33,164
Jun 20093786066.163.90$25,242
May 20091866054.743.93$10,417
Apr 20095496046.773.59$25,892
Mar 20093545442.144.06$15,137
Feb 20093785632.814.63$12,662
Jan 20093646235.865.37$13,386
Dec 20085626037.105.98$21,209
Nov 20083576055.496.86$20,222
Oct 20085356075.246.92$40,669
Sep 200852260101.767.88$53,591
Aug 200836862114.228.48$42,559
Jul 200851760131.0811.39$68,452
Jun 200854956131.3313.03$72,830
May 200831958123.1711.57$39,963
Apr 200853360110.3110.45$59,423
Mar 200853460101.909.66$54,994
Feb 20085395692.538.77$50,365
Jan 20085186290.388.21$47,326
Dec 20077245888.337.30$64,374
Nov 20075226091.677.29$48,289
Oct 20077036282.856.92$58,673
Sep 20075225275.846.24$39,913
Aug 20073375669.066.39$23,631
Jul 20076756270.906.39$48,254
Jun 20076645862.007.55$41,606
May 20076906258.747.85$41,017
Apr 20073406059.617.81$20,736
Mar 20078996056.927.30$51,609
Feb 20075305455.108.22$29,647
Jan 20077016050.306.73$35,664
Dec 20067026256.656.92$40,197
Nov 20066666054.207.62$36,554
Oct 20067396054.906.01$40,932
Sep 20066915860.085.04$41,807
Aug 20066926068.717.34$47,988
Jul 20066766269.376.34$47,287
Jun 20067136066.286.38$47,641
May 20064976066.016.42$33,192
Apr 20065266064.397.36$34,311
Mar 20068986256.707.08$51,356
Feb 20065295057.597.75$30,853
Jan 20067026060.598.93$43,070
Dec 20059106254.9413.42$50,827
Nov 20056945854.6910.59$38,569
Oct 20056916258.3413.80$41,168
Sep 20051,0565861.4512.08$65,592
Aug 20057046261.519.80$43,910
Jul 20058666255.697.84$48,714
Jun 20053605852.337.38$19,267
May 20055046045.226.65$23,190
Apr 20056645849.207.36$33,096
Mar 20055205850.377.15$26,607
Feb 20057045645.226.31$32,188
Jan 20055106043.166.32$22,391
Dec 20045336239.866.75$21,664
Nov 20048685845.286.33$39,670
Oct 20046826249.706.52$34,299
Sep 20047026043.245.28$30,672
Aug 20045156042.375.55$22,154
Jul 20046826238.286.08$26,484
Jun 20047086036.106.43$25,945
May 20046776237.486.49$25,777
Apr 20047035834.475.86$24,572
Mar 20045296034.365.53$18,508
Feb 20047285632.455.51$23,932
Jan 20048956232.036.30$29,057
Dec 20038916230.266.30$27,352
Nov 20035486028.804.60$16,058
Oct 20039066228.174.76$25,817
Sep 20037006026.314.75$18,702
Aug 20037086229.765.13$21,388
Jul 20038566229.415.17$25,496
Jun 20037206028.565.98$20,922
May 20038586026.595.97$23,173
Apr 20037026026.675.41$19,047
Mar 20038686031.146.10$27,395
Feb 20038775633.487.93$29,806
Jan 20038936230.315.58$27,413
Dec 20021,0876226.914.85$29,552
Nov 20028685824.664.14$21,645
Oct 20021,0916226.464.23$29,130
Sep 20028936027.443.64$24,722
Aug 20028626025.963.16$22,567
Jul 20021,0916224.583.06$27,007
Jun 20028775823.733.34$21,005
May 20021,0456224.663.58$25,992
Apr 20021,0576023.653.51$25,209
Mar 20021,0496022.003.10$23,264
Feb 20021,0875618.222.38$19,938
Jan 20021,1223217.172.38$19,341
Dec 20011,1796216.932.36$20,107
Nov 20019656018.072.41$17,582
Oct 20011,1396219.782.53$22,686
Sep 20019146024.262.25$22,309
Aug 20011,1466224.873.05$28,690
Jul 20019646023.933.20$23,260
Jun 20017536024.563.82$18,723
May 20011,1756025.524.31$30,244
Apr 20017945824.685.34$19,905
Mar 20016006224.545.38$15,057
Feb 20018075427.755.77$22,706
Jan 20016035827.478.40$17,052
Dec 20008096226.889.12$22,312
Nov 20007935832.215.66$25,871
Oct 20007845831.235.15$24,783
Sep 20005875831.875.19$19,009
Aug 20009756029.644.54$29,171
Jul 20009636028.534.09$27,720
Jun 20005876029.304.40$17,463
May 20001,1596227.263.68$31,822
Apr 20001,3486024.513.12$33,226
Mar 20001,1856228.422.86$33,855
Feb 20001,3755827.622.73$38,136
Jan 20001,3456225.272.48$34,142
Dec 19991,3796224.282.42$33,632
Nov 19991,3746023.192.43$32,009
Oct 19991,7476220.982.80$36,826
Sep 19991,9266021.752.62$42,048
Aug 19997786219.262.88$15,163
Jul 19999616217.892.37$17,339
Jun 19995866015.942.36$9,483
May 19999686215.792.32$15,429
Apr 19997926015.102.21$12,092
Mar 19991,1606212.471.84$14,579
Feb 1999772569.981.82$7,806
Jan 19997955810.381.90$8,362
Dec 1998972629.201.77$9,052
Nov 19987746010.892.19$8,560
Oct 19987756212.421.97$9,748
Sep 19987596012.592.08$9,681
Aug 19989606211.301.91$10,966
Jul 19989346211.742.24$11,104
Jun 19989316011.242.24$10,599
May 19989586212.622.21$12,227
Apr 19987896013.042.51$10,439
Mar 19987735812.802.31$10,028
Feb 19987755613.952.30$10,940
Jan 19989796214.702.15$14,525
Dec 19979556216.322.41$15,735
Nov 19979716018.193.09$17,848
Oct 19971,1576219.253.15$22,468
Sep 19979626017.742.95$17,243
Aug 19979546217.862.55$17,197
Jul 19979386017.582.25$16,625
Jun 19971,1596017.242.26$20,117
May 19979556218.972.31$18,259
Apr 19975715017.882.08$10,314
Mar 19977546018.951.94$14,405
Feb 19971,1225620.492.21$23,113
Jan 19971,1316223.483.54$26,775
Dec 19961,1686223.32$27,238
Nov 19961,3186021.97$28,956
Oct 19961,1386023.31$26,527
Sep 19969545622.22$21,198
Aug 19961,4766220.26$29,904
Jul 19961,1056219.55$21,603
Jun 19961,2695818.73$23,768
May 19961,4736219.43$28,620
Apr 19961,3256021.51$28,501
Mar 19961,3256219.38$25,679
Feb 19961,5415616.98$26,166
Jan 19961,3436217.07$22,925
Dec 19951,1596217.19$19,923
Nov 19951,3506016.00$21,600
Oct 19951,1516215.43$17,760
Sep 19959636016.18$15,581
Aug 19951,1046215.92$17,576
Jul 19951,2936215.24$19,705
Jun 19951,1396016.41$18,691
May 19951,5066217.56$26,445
Apr 19951,3646017.73$24,184
Mar 19951,5616216.44$25,663
Feb 19951,3145616.58$21,786
Jan 19951,3596215.92$21,635
Dec 19941,1756215.03$17,660
Nov 19941,5326015.90$24,359
Oct 19941,5516215.58$24,165
Sep 19941,4956015.29$22,859
Aug 19941,85615516.13$29,937
Jul 19941,69615517.56$29,782
Jun 19941,63115017.09$27,874
May 19941,53815515.88$24,423
Apr 19944,40763714.14$62,315
Mar 19944,15049912.46$51,709
Feb 19943,91850712.50$48,975
Jan 19944,53115512.66$57,362
Dec 19935,21815512.33$64,338
Nov 19932,66515014.49$38,616
Oct 19931,86366415.85$29,529
Sep 19931,65342315.03$24,845
Aug 19931,11561115.66$17,461
Jul 19931,11649515.46$17,253
Jun 199393960316.79$15,766
May 19932,23679117.68$39,532
Apr 199394470318.05$17,039
Mar 19931,53261818.14$27,790
Feb 19931,15759117.90$20,710
Jan 19931,55869016.93$26,377

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                  180 bbl  × $106.41 =    $19,154
Casinghead gas       124 Mcf  × $  3.05 =       $378

────────────────────────────────────────────────────
Month total                                  $19,531

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. 10/O/4807 is the state's own key, not one this site invented.