DEAN "C"

Operated by EXTEX OPERATING COMPANY (P-5 257062) in the SLAUGHTER field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5981District 8AField 83991001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSaveExport
Value, all time
$4.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$31 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 160 leases and 6,532 wells, and the rule below applies to all of them.

Discovered
1937-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
880 ft
minimum
From a lease line
440 ft
minimum

A drilling unit in this field needs at least 17 acres. The field rule took effect on 1993-02-02.

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: UNITS MAY BE 17.7 AC. OR UP TO 35.4 AC.

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
NGPA3none

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
OilDisposition132,956 bbl$4,420,073
Casinghead gasProduction165,170 Mcf$422,175
Total$4,842,248

56,079 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 (14)

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 33.4949, -102.7270. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

33.49508, -102.72638 · 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
57.1%
8 of 14 wells
With a plug date
57.1%
8 of 14 wells
Median depth
5,092 ft
13 wells filed one
Completion to plug
25.8 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
857.1%
A plug date is filed
857.1%
BothOn the schedule and plugged. Neither fact cancels the other.
857.1%
NeitherNo plug date, and not on the schedule.
642.9%

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, 13 of 14 wells. Median 5,092 ft, with the middle half between 5,087 and 5,100 ft; the shallowest is 5,075 ft and the deepest 5,120 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, 7 of 14 wells, Jul 1985 – Nov 1992. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jul 1985 – Nov 1992
7 of 14 wells; 7 filed none
Plug dates filed
Dec 1984 – Apr 2018
8 of 14 wells; 6 filed none

Last completion to plug: a median of 25.8 years across the 3 wells that filed both dates, with the middle half between 13.0 years and 29.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

14 wells

42-0790141315,086 ftJan 2003Yes
42-0790142135,078 ftDec 1984Yes
42-079014254W5,087 ftOct 1990Yes
42-0790142955,091 ftApr 1998Yes
42-0790143485,095 ftDec 2000Yes
42-079014337W5,087 ft
42-0793020811
42-079014172W5,120 ftNov 1992Jan 1993Yes
42-07930209105,100 ftAug 1990
42-079014326W5,092 ftMar 1989
42-0793013695,075 ftOct 1985Aug 2011Yes
42-07932132135,100 ftOct 1985
42-07932131125,100 ftOct 1985
42-079320953A5,100 ftJul 1985Apr 2018Yes

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 2026165063.503.75$10,478
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 2025164058.593.93$9,609
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 2025168066.483.13$11,169
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 2025161067.704.27$10,900
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 2024152068.993.12$10,486
Nov 20240069.052.20$0
Oct 2024171071.372.28$12,204
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 2024165078.082.63$12,883
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 2024170080.301.55$13,651
Feb 20240076.091.78$0
Jan 2024171073.023.30$12,486
Dec 20230071.262.61$0
Nov 2023170077.892.81$13,241
Oct 20230085.443.09$0
Sep 2023171089.042.74$15,226
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 2023171068.962.26$11,792
May 2023169070.622.23$11,935
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 2023177076.533.39$13,546
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 2022171087.185.86$14,908
Sep 2022173084.888.16$14,684
Aug 20220094.529.13$0
Jul 20221700101.587.54$17,269
Jun 202200115.097.98$0
May 20221730109.378.43$18,921
Apr 202200104.226.84$0
Mar 20221710108.885.08$18,618
Feb 2022169091.054.86$15,387
Jan 202211081.844.54$900
Dec 2021171071.323.90$12,196
Nov 20210077.435.24$0
Oct 2021191079.795.71$15,240
Sep 20210069.865.35$0
Aug 202116751166.024.22$13,182
Jul 202116952370.783.98$14,044
Jun 202117216969.493.38$12,524
May 2021018063.483.02$543
Apr 202116910860.362.76$10,499
Mar 2021037361.302.72$1,013
Feb 2021028457.805.55$1,576
Jan 2021034450.412.81$967
Dec 202017130844.642.68$8,457
Nov 2020035838.772.71$969
Oct 202017127036.972.48$6,991
Sep 202017541337.091.99$7,313
Aug 202017351139.982.39$8,135
Jul 202017037638.371.83$7,209
Jun 2020059934.901.69$1,013
May 2020041116.921.81$746
Apr 202016824314.751.80$2,916
Mar 2020029630.341.86$549
Feb 2020011349.881.98$224
Jan 2020019057.252.09$398
Dec 201917417959.012.30$10,680
Nov 2019019455.302.75$534
Oct 2019020553.472.42$496
Sep 201917520755.052.66$10,184
Aug 2019011253.112.30$258
Jul 2019016456.272.46$403
Jun 2019018752.782.49$466
May 2019018458.482.74$504
Apr 201917019662.632.75$11,186
Mar 201916619156.803.06$10,014
Feb 2019021150.852.79$589
Jan 201917021446.033.23$8,516
Dec 201816718346.594.19$8,546
Nov 2018026352.934.24$1,114
Oct 201816522961.443.40$10,916
Sep 201816626559.543.11$10,707
Aug 201816935259.403.07$11,118
Jul 201816523265.142.93$11,428
Jun 2018018660.183.08$572
May 201817031865.382.90$12,037
Apr 201816556263.842.90$12,164
Mar 2018032561.222.79$906
Feb 201816519561.782.77$10,733
Jan 201816721362.874.01$11,353
Dec 201716712757.272.92$9,935
Nov 201716726355.423.12$10,075
Oct 2017017849.292.98$531
Sep 201716526847.523.09$8,668
Aug 201716825445.373.00$8,385
Jul 201716627943.873.09$8,144
Jun 2017032142.493.09$991
May 201716623045.373.26$8,282
Apr 201716820047.933.21$8,695
Mar 201716315946.772.98$8,098
Feb 2017023850.452.95$703
Jan 201716718849.413.42$8,894
Dec 201616615148.763.72$8,656
Nov 201616820842.492.64$7,688
Oct 2016021546.193.09$664
Sep 201616624841.553.10$7,666
Aug 201616730341.442.92$7,807
Jul 201616522641.622.92$7,528
Jun 201616828445.352.69$8,382
May 2016047442.521.99$944
Apr 201616640636.561.99$6,877
Mar 201616626033.011.79$5,946
Feb 2016037526.472.06$774
Jan 201616516627.352.36$4,905
Dec 201516516632.362.00$5,672
Nov 201517019538.792.17$7,017
Oct 201516516643.552.43$7,589
Sep 2015014242.992.76$392
Aug 201516641240.162.87$7,850
Jul 201516739148.152.95$9,193
Jun 201516545956.152.88$10,588
May 201516439955.212.96$10,234
Apr 2015043849.822.71$1,185
Mar 201516528642.892.93$7,916
Feb 201503544.662.98$104
Jan 201516711443.433.10$7,606
Dec 201416721354.693.59$9,898
Nov 201416519470.464.25$12,451
Oct 201416618378.303.90$13,712
Sep 20141667286.164.05$14,594
Aug 201416810089.394.04$15,421
Jul 201416861996.564.18$18,809
Jun 201416740498.164.74$18,306
May 201416545394.734.73$17,772
Apr 201416849295.944.81$18,484
Mar 201416654795.895.06$18,684
Feb 201416624697.406.19$17,692
Jan 201416654590.404.86$17,655
Dec 201316532191.824.35$16,548
Nov 201317136788.853.74$16,565
Oct 201316920097.423.78$17,220
Sep 2013167168104.113.72$18,011
Aug 2013167294104.253.52$18,445
Jul 2013171273102.523.72$18,546
Jun 201316627294.403.93$16,740
May 201317030894.834.15$17,399
Apr 201316736593.964.28$17,254
Mar 201316944393.623.91$17,555
Feb 201316729991.233.42$16,258
Jan 201316527291.603.42$16,044
Dec 201233654686.773.42$31,022
Nov 2012028686.953.62$1,037
Oct 201216735989.383.40$16,147
Sep 201216825694.672.92$16,652
Aug 201217021592.662.91$16,377
Jul 201217326485.133.02$15,525
Jun 201234428579.822.52$28,176
May 201217026991.612.49$16,243
Apr 201216852101.652.00$17,181
Mar 201216297105.052.22$17,234
Feb 201217171101.102.57$17,471
Jan 20121674198.092.73$16,493
Dec 201116814696.873.24$16,747
Nov 20111743495.723.31$16,768
Oct 201109284.983.65$336
Sep 201117110783.623.99$14,726
Aug 201116913383.404.15$14,646
Jul 201116916294.144.52$16,641
Jun 201117615192.904.64$17,051
May 201117812698.134.40$18,022
Apr 2011170157105.964.33$18,694
Mar 201117416096.364.06$17,416
Feb 201117113085.644.18$15,188
Jan 201116818186.504.59$15,363
Dec 201034318585.734.35$30,210
Nov 201017134980.843.80$15,148
Oct 201017240378.103.51$14,847
Sep 201017649272.633.98$14,741
Aug 201017438273.684.42$14,509
Jul 201034224472.554.74$25,968
Jun 201017319470.364.91$13,125
May 201017317171.124.24$13,028
Apr 201017322581.694.12$15,060
Mar 201016616278.394.39$13,724
Feb 201034015873.585.44$25,877
Jan 201016217374.365.96$13,078
Dec 200916913671.445.48$12,819
Nov 200917119074.593.75$13,468
Oct 200917123472.544.11$13,366
Sep 200916319965.543.06$11,293
Aug 200917419367.423.22$12,352
Jul 200933821461.133.46$21,403
Jun 200917231166.163.90$12,591
May 200917129054.743.93$10,499
Apr 200917136346.773.59$9,300
Mar 200934334642.144.06$15,858
Feb 200917033932.814.63$7,148
Jan 200917134835.865.37$8,001
Dec 200817037337.105.98$8,536
Nov 200833529455.496.86$20,606
Oct 200817025775.246.92$14,570
Sep 2008171296101.767.88$19,733
Aug 2008166364114.228.48$22,048
Jul 2008170440131.0811.39$27,295
Jun 2008158387131.3313.03$25,794
May 2008167384123.1711.57$25,014
Apr 2008337341110.3110.45$40,740
Mar 2008165478101.909.66$21,433
Feb 200833142192.538.77$34,320
Jan 200816548690.388.21$18,901
Dec 200717136288.337.30$17,748
Nov 200718026891.677.29$18,455
Oct 200735130982.856.92$31,219
Sep 200718633275.846.24$16,179
Aug 200717543469.066.39$14,858
Jul 200734950170.906.39$27,944
Jun 200716643562.007.55$13,576
May 200717740158.747.85$13,543
Apr 200717739359.617.81$13,618
Mar 200734637356.927.30$22,418
Feb 200718276955.108.22$16,346
Jan 200717821350.306.73$10,386
Dec 200617420556.656.92$11,275
Nov 200635728454.207.62$21,513
Oct 200616818854.906.01$10,354
Sep 200617521960.085.04$11,617
Aug 200634339268.717.34$26,445
Jul 200617043969.376.34$14,577
Jun 200616748666.286.38$14,171
May 200632539966.016.42$24,017
Apr 200632035064.397.36$23,181
Mar 200632645056.707.08$21,672
Feb 200615239157.597.75$11,784
Jan 200615640960.598.93$13,106
Dec 200516449354.9413.42$15,624
Nov 200535049454.6910.59$24,372
Oct 20051744558.3413.80$10,772
Sep 20053402261.4512.08$21,159
Aug 2005348061.519.80$21,405
Jul 2005175055.697.84$9,746
Jun 2005355152.337.38$18,585
May 2005171145.226.65$7,739
Apr 2005330049.207.36$16,236
Mar 20053534450.377.15$18,095
Feb 2005171045.226.31$7,733
Jan 20053583843.166.32$15,692
Dec 2004354539.866.75$14,144
Nov 20041782945.286.33$8,243
Oct 200451838449.706.52$28,246
Sep 200417639843.245.28$9,713
Aug 20044651,40542.375.55$27,501
Jul 20041751,23138.286.08$14,189
Jun 200434510236.106.43$13,111
May 2004174037.486.49$6,522
Apr 200452110834.475.86$18,592
Mar 20041756534.365.53$6,372
Feb 20041779732.455.51$6,278
Jan 20043511432.036.30$11,331
Dec 20033535530.266.30$11,028
Nov 200334920528.804.60$10,993
Oct 200317518028.174.76$5,786
Sep 200334929226.314.75$10,569
Aug 200317541429.765.13$7,332
Jul 200334942829.415.17$12,477
Jun 200334723328.565.98$11,304
May 200317438926.595.97$6,950
Apr 200334430926.675.41$10,845
Mar 200334618831.146.10$11,921
Feb 20033518333.487.93$12,409
Jan 20033534130.315.58$10,928
Dec 2002156926.914.85$4,242
Nov 20023371624.664.14$8,377
Oct 20023293626.464.23$8,858
Sep 200233822427.443.64$10,089
Aug 200218426425.963.16$5,612
Jul 200234438124.583.06$9,622
Jun 200234836723.733.34$9,483
May 200234028924.663.58$9,420
Apr 200233415723.653.51$8,451
Mar 200234633522.003.10$8,651
Feb 200235434518.222.38$7,269
Jan 200254743017.172.38$10,414
Dec 200155316816.932.36$9,760
Nov 200136040118.072.41$7,470
Oct 200137838219.782.53$8,443
Sep 200153543924.262.25$13,967
Aug 200136350524.873.05$10,570
Jul 200152651923.933.20$14,246
Jun 200151957024.563.82$14,926
May 200135841825.524.31$10,937
Apr 200134044324.685.34$10,755
Mar 200162135224.545.38$17,132
Feb 200157915627.755.77$16,967
Jan 200134910827.478.40$10,494
Dec 200051440526.889.12$17,511
Nov 200050136632.215.66$18,208
Oct 200049841331.235.15$17,678
Sep 200051852931.875.19$19,252
Aug 200045347929.644.54$15,602
Jul 200039649828.534.09$13,335
Jun 200050249729.304.40$16,894
May 200047162827.263.68$15,150
Apr 200046315524.513.12$11,831
Mar 200051619728.422.86$15,228
Feb 200046134127.622.73$13,663
Jan 200054536725.272.48$14,682
Dec 199953915424.282.42$13,460
Nov 199942432223.192.43$10,616
Oct 19994081,22420.982.80$11,992
Sep 199947624021.752.62$10,982
Aug 199944838419.262.88$9,733
Jul 19994161,44517.892.37$10,870
Jun 19995421,25615.942.36$11,606
May 19994771,23415.792.32$10,396
Apr 19994731,09515.102.21$9,560
Mar 19995561,16112.471.84$9,068
Feb 19994671,3419.981.82$7,098
Jan 19995291,21610.381.90$7,801
Dec 19985921,1939.201.77$7,562
Nov 19985241,32510.892.19$8,602
Oct 19984891,02212.421.97$8,086
Sep 19985261,18412.592.08$9,088
Aug 199866599211.301.91$9,407
Jul 19985001,27311.742.24$8,718
Jun 19986931,38711.242.24$10,892
May 19986541,30512.622.21$11,133
Apr 19988411,32613.042.51$14,289
Mar 199884691112.802.31$12,933
Feb 199881382213.952.30$13,231
Jan 199890778614.702.15$15,027
Dec 199771769416.322.41$13,375
Nov 199776784518.193.09$16,561
Oct 19979051,19219.253.15$21,176
Sep 19977531,14217.742.95$16,733
Aug 19978551,07917.862.55$18,027
Jul 19978491,06917.582.25$17,327
Jun 199774292617.242.26$14,882
May 199789887118.972.31$19,046
Apr 199793887617.882.08$18,596
Mar 199785390618.951.94$17,921
Feb 199786079720.492.21$19,380
Jan 199785694923.483.54$23,458
Dec 199689787623.32$20,918
Nov 199693185221.97$20,454
Oct 199689176223.31$20,769
Sep 199682277022.22$18,265
Aug 199688580920.26$17,930
Jul 199690678819.55$17,712
Jun 199685674918.73$16,033
May 199689785019.43$17,429
Apr 199686182721.51$18,520
Mar 19969411,02419.38$18,237
Feb 199679591316.98$13,499
Jan 199687276317.07$14,885
Dec 199598288617.19$16,881
Nov 19958621,04116.00$13,792
Oct 199594394915.43$14,550
Sep 19958691,82716.18$14,060
Aug 19958781,93315.92$13,978
Jul 19958432,14315.24$12,847
Jun 19957744,21616.41$12,701
May 19958701,85717.56$15,277
Apr 19959101,67217.73$16,134
Mar 19951,0151,24816.44$16,687
Feb 19951,0111,30716.58$16,762
Jan 19951,2011,49115.92$19,120
Dec 19941,0021,10315.03$15,060
Nov 19949471,08515.90$15,057
Oct 19941,1791,40315.58$18,369
Sep 19941,0451,11015.29$15,978
Aug 19941,0691,37116.13$17,243
Jul 19941,0121,08217.56$17,771
Jun 19941,0801,17017.09$18,457
May 19941,28992415.88$20,469
Apr 19941,05387514.14$14,889
Mar 19941,18597412.46$14,765
Feb 19941,20887112.50$15,100
Jan 19941,19090312.66$15,065
Dec 19931,14395412.33$14,093
Nov 19931,24481614.49$18,026
Oct 19931,16590715.85$18,465
Sep 19931,22687215.03$18,427
Aug 19931,19785915.66$18,745
Jul 19931,3631,00915.46$21,072
Jun 19931,1391,76316.79$19,124
May 19931,3591,27917.68$24,027
Apr 19931,3701,04218.05$24,729
Mar 19931,32494118.14$24,017
Feb 19931,08790717.90$19,457
Jan 19931,4181,30616.93$24,007

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.

Feb 2026 — as filed, then multipliedworked
Oil                  165 bbl  × $ 63.50 =    $10,478
Casinghead gas         0 Mcf  × $  3.75 =         $0

────────────────────────────────────────────────────
Month total                                  $10,478

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. 8A/O/5981 is the state's own key, not one this site invented.