O'BRIEN, J. M.

Operated by DORCHESTER OPERATING COMPANY LLC (P-5 223502) in the GRETA (4400) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 3981District 02Field 36867780OilCasinghead gasSave
Value, all time
$20.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$358 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition380,235 bbl$20,029,378
Casinghead gasProduction252,592 Mcf$793,728
Total$20,823,106

51,766 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 (13)

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 28.3989, -97.1754. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

28.40340, -97.17660 · 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
76.9%
10 of 13 wells
With a plug date
46.2%
6 of 13 wells
Median depth
4,477 ft
12 wells filed one
Completion to plug
7.9 years
median over 6 wells

What the state filed about each well

On the RRC proration schedule
1076.9%
A plug date is filed
646.2%
BothOn the schedule and plugged. Neither fact cancels the other.
646.2%
NeitherNo plug date, and not on the schedule.
323.1%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 12 of 13 wells. Median 4,477 ft, with the middle half between 4,396 and 6,300 ft; the shallowest is 4,387 ft and the deepest 7,000 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

50s
60s
70s
80s
90s
00s

Last completion by decade, 12 of 13 wells, Oct 1958 – Nov 2009. 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 1958 – Nov 2009
12 of 13 wells; 1 filed none
Plug dates filed
Nov 1986 – Mar 2018
6 of 13 wells; 7 filed none

Last completion to plug: a median of 7.9 years across the 6 wells that filed both dates, with the middle half between 6.0 years and 8.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

13 wells

42-39100832102
42-391325121096,300 ftNov 2009Mar 2018Yes
42-391010272 T4,400 ftAug 2008Yes
42-391312783124,503 ftAug 2008Yes
42-391303241077,000 ftSep 2006
42-39101050414,390 ftNov 2004May 2010Yes
42-391302093084,450 ftMay 1990Yes
42-391318633134,603 ftJul 1985Dec 1990Yes
42-391302953096,300 ftOct 1983Apr 1991Yes
42-3910102614,398 ftMay 1978Nov 1986Yes
42-391303923106,300 ftOct 1975
42-39100805304 T4,387 ftSep 1974Yes
42-391008043 T4,390 ftOct 1958Jun 1989Yes

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 2026481110106.413.05$51,518
Apr 202647613498.932.87$47,475
Mar 202648722789.753.15$44,423
Feb 202648124163.503.75$31,447
Jan 202632623659.138.00$21,164
Dec 202548419356.664.41$28,275
Nov 202532211258.593.93$19,306
Oct 202548516559.383.30$29,345
Sep 20251598962.743.08$10,250
Aug 202548315863.933.01$31,355
Jul 202547516866.743.32$32,258
Jun 20251648966.483.13$11,181
May 202549117660.553.23$30,299
Apr 202532018962.363.54$20,625
Mar 202565221267.704.27$45,045
Feb 202548516870.884.34$35,106
Jan 202532122174.324.28$24,802
Dec 202447819668.993.12$33,589
Nov 202448926969.052.20$34,357
Oct 202448024971.372.28$34,826
Sep 202448021869.612.36$33,928
Aug 202448617575.632.06$37,117
Jul 202448729279.932.15$39,553
Jun 202448324478.082.63$38,355
May 202448531078.812.20$38,904
Apr 202431714784.451.66$27,015
Mar 202432419280.301.55$26,314
Feb 202432622576.091.78$25,207
Jan 202432113373.023.30$23,878
Dec 202348821371.262.61$35,331
Nov 202348620477.892.81$38,427
Oct 202332322385.443.09$28,286
Sep 202364521989.042.74$58,030
Aug 202332820780.522.67$26,964
Jul 202348115574.852.64$36,412
Jun 202332717068.962.26$22,934
May 202365419270.622.23$46,613
Apr 202316015678.122.24$12,848
Mar 202366021372.852.39$48,591
Feb 202348421475.112.47$36,881
Jan 202349233176.533.39$38,774
Dec 202232130276.415.73$26,258
Nov 202248911885.005.65$42,231
Oct 202232812087.185.86$29,299
Sep 202249226684.888.16$43,933
Aug 202232827594.529.13$33,513
Jul 2022488324101.587.54$52,015
Jun 2022489184115.097.98$57,747
May 2022014109.378.43$118
Apr 202232858104.226.84$34,581
Mar 2022491379108.885.08$55,384
Feb 202249322891.054.86$45,995
Jan 2022013881.844.54$626
Dec 202148938371.323.90$36,369
Nov 202116523177.435.24$13,986
Oct 202149728279.795.71$41,267
Sep 202133025269.865.35$24,402
Aug 202166121966.024.22$44,564
Jul 202116727570.783.98$12,915
Jun 202149632169.493.38$35,552
May 202148521763.483.02$31,443
Apr 202165822660.362.76$40,340
Mar 20211603761.302.72$9,909
Feb 202116413857.805.55$10,245
Jan 20214936950.412.81$25,046
Dec 20205084544.642.68$22,798
Nov 202049116838.772.71$19,491
Oct 202049120636.972.48$18,663
Sep 20203299837.091.99$12,398
Aug 202049320639.982.39$20,201
Jul 20204883238.371.83$18,783
Jun 20206556034.901.69$22,961
May 20203288616.921.81$5,706
Apr 20201633614.751.80$2,469
Mar 20204937730.341.86$15,101
Feb 20204905349.881.98$24,546
Jan 20204886457.252.09$28,072
Dec 20191653359.012.30$9,813
Nov 20193316855.302.75$18,491
Oct 20194915453.472.42$26,384
Sep 20191647255.052.66$9,220
Aug 20191602453.112.30$8,553
Jul 201965510756.272.46$37,120
Jun 201901552.782.49$37
May 20191646458.482.74$9,766
Apr 201902062.632.75$55
Mar 20193332856.803.06$19,000
Feb 20194941550.852.79$25,162
Jan 20194938446.033.23$22,964
Dec 20181631846.594.19$7,670
Nov 201833311852.934.24$18,126
Oct 20181657661.443.40$10,396
Sep 20181664459.543.11$10,020
Aug 201849222159.403.07$29,903
Jul 201833313765.142.93$22,093
Jun 201801460.183.08$43
May 201865718865.382.90$43,500
Apr 20184925363.842.90$31,563
Mar 201864532161.222.79$40,381
Feb 201882053961.782.77$52,151
Jan 20188241062.874.01$51,845
Dec 20171,313057.272.92$75,196
Nov 2017645055.423.12$35,746
Oct 2017986049.292.98$48,600
Sep 2017495047.523.09$23,522
Aug 201749216445.373.00$22,815
Jul 20171648243.873.09$7,448
Jun 201704142.493.09$127
May 20171,14334645.373.26$52,987
Apr 2017805047.933.21$38,584
Mar 201781239146.772.98$39,144
Feb 201778728750.452.95$40,552
Jan 201764220949.413.42$32,436
Dec 201663026248.763.72$31,694
Nov 201695430542.492.64$41,342
Oct 20161,40544346.193.09$66,266
Sep 201662127541.553.10$26,655
Aug 201661926441.442.92$26,423
Jul 201676738741.622.92$33,054
Jun 20161,69669345.352.69$78,775
May 20161,54179742.521.99$67,110
Apr 20161,87754636.561.99$69,710
Mar 20161,08845633.011.79$36,733
Feb 201693043326.472.06$25,511
Jan 20161,07039727.352.36$30,203
Dec 20151,08462532.362.00$36,329
Nov 20151,09149038.792.17$43,382
Oct 20151,39070743.552.43$62,250
Sep 201577042642.992.76$34,277
Aug 201561242140.162.87$25,787
Jul 201562718048.152.95$30,720
Jun 2015295056.152.88$16,564
May 20151,386055.212.96$76,521
Apr 201593364549.822.71$48,228
Mar 20151,41287942.892.93$63,140
Feb 20151,08565944.662.98$50,417
Jan 20151,25472543.433.10$56,709
Dec 201493359154.693.59$53,148
Nov 201492650970.464.25$67,410
Oct 20141,08151578.303.90$86,651
Sep 20141,08476886.164.05$96,504
Aug 20141,37875589.394.04$126,226
Jul 20141,38774696.564.18$137,047
Jun 20141,23266298.164.74$124,069
May 20141,08783294.734.73$106,904
Apr 20141,10971995.944.81$109,855
Mar 20141,42265195.895.06$139,648
Feb 201476844497.406.19$77,552
Jan 20141,25342490.404.86$115,332
Dec 201394357291.824.35$89,077
Nov 201379259788.853.74$72,601
Oct 20131,08154597.423.78$107,371
Sep 2013944646104.113.72$100,682
Aug 20131,370653104.253.52$145,123
Jul 2013621439102.523.72$65,297
Jun 201377448394.403.93$74,965
May 20131,09956294.834.15$106,550
Apr 201395064193.964.28$92,007
Mar 201378466393.623.91$75,992
Feb 20131,10159791.233.42$102,486
Jan 20131,26049491.603.42$117,105
Dec 201294749486.773.42$83,861
Nov 201255118086.953.62$48,562
Oct 20124653389.383.40$41,674
Sep 2012467494.672.92$44,223
Aug 201294514192.662.91$87,974
Jul 201292426485.133.02$79,458
Jun 201277032579.822.52$62,280
May 20121,23669891.612.49$114,967
Apr 2012769570101.652.00$79,307
Mar 2012631192105.052.22$66,713
Feb 201247642101.102.57$48,232
Jan 20121,11360398.092.73$110,823
Dec 20111,11857896.873.24$110,173
Nov 20111,14857395.723.31$111,784
Oct 20111,1403484.983.65$97,001
Sep 20115472583.623.99$45,840
Aug 20111,31116583.404.15$110,022
Jul 20111,09729894.144.52$104,618
Jun 201181427592.904.64$76,897
May 20111,59830698.134.40$158,160
Apr 20111,316273105.964.33$140,626
Mar 20111,78432596.364.06$173,225
Feb 201166029585.644.18$57,755
Jan 20111,63924986.504.59$142,916
Dec 20101,51829885.734.35$131,434
Nov 20101,52124780.843.80$123,895
Oct 20101,52645278.103.51$120,767
Sep 20101,33145272.633.98$98,469
Aug 20101,49545273.684.42$112,149
Jul 201083745272.554.74$62,865
Jun 20109701,61270.364.91$76,165
May 20101,3321,61271.124.24$101,559
Apr 20101,0201,61281.694.12$89,970
Mar 20101,3411,61278.394.39$112,196
Feb 20101,1781,45673.585.44$94,601
Jan 20101,48834474.365.96$112,699
Dec 20091,36440371.445.48$99,654
Nov 20091,34617374.593.75$101,047
Oct 20091,70244172.544.11$125,276
Sep 20091,69144465.543.06$112,189
Aug 20091,88837667.423.22$128,499
Jul 20091,66346161.133.46$103,256
Jun 20091,48946766.163.90$100,331
May 20091,514054.743.93$82,876
Apr 20091,6765646.773.59$78,587
Mar 20091,87327742.144.06$80,053
Feb 20091,4621232.814.63$48,024
Jan 20092,025035.865.37$72,617
Dec 20081,513037.105.98$56,132
Nov 20081,745055.496.86$96,830
Oct 20081,703075.246.92$128,134
Sep 20081,5720101.767.88$159,967
Aug 20081,8920114.228.48$216,104
Jul 20081,5040131.0811.39$197,144
Jun 20081,88826131.3313.03$248,290
May 20081,3610123.1711.57$167,634
Apr 20081,5110110.3110.45$166,678
Mar 20081,564118101.909.66$160,512
Feb 20081,34419992.538.77$126,106
Jan 20081,03043690.388.21$96,669
Dec 20071,37669288.337.30$126,595
Nov 200778137691.677.29$74,336
Oct 200781833982.856.92$70,118
Sep 20078171,46075.846.24$71,078
Aug 200766070569.066.39$50,083
Jul 20078181,07570.906.39$64,863
Jun 20078261,06662.007.55$59,259
May 20072,21859658.747.85$134,962
Apr 20072,24760659.617.81$138,674
Mar 20072,19265256.927.30$129,530
Feb 20072,3971,38055.108.22$143,413
Jan 20072,5761,60950.306.73$140,396
Dec 20062,3971,09756.656.92$143,380
Nov 20062,43477254.207.62$137,803
Oct 20062,71255754.906.01$152,238
Sep 20062,03638960.085.04$124,282
Aug 20062,25043368.717.34$157,776
Jul 20063,21289769.376.34$228,506
Jun 20063,2821,04766.286.38$224,215
May 20063,7881,33966.016.42$258,649
Apr 20062,8591,75064.397.36$196,972
Mar 20063,74273556.707.08$217,377
Feb 20062,42375857.597.75$145,416
Jan 20063,8221,19060.598.93$242,206
Dec 20052,03861254.9413.42$120,178
Nov 20052,06459654.6910.59$119,191
Oct 20052,15279158.3413.80$136,460
Sep 20052,26648461.4512.08$145,092
Aug 20053,41071961.519.80$216,793
Jul 20052,85255455.697.84$163,173
Jun 20052,63254652.337.38$141,763
May 200579732745.226.65$38,215
Apr 200561067849.207.36$35,002
Mar 200569458350.377.15$39,128
Feb 20051,79931545.226.31$83,339
Jan 200577629643.166.32$35,364
Dec 20041,27327439.866.75$52,592
Nov 20041,02531745.286.33$48,419
Oct 200494947649.706.52$50,266
Sep 200498849143.245.28$45,316
Aug 200481357442.375.55$37,633
Jul 200488247938.286.08$36,677
Jun 20041,35142936.106.43$51,531
May 200492948137.486.49$37,943
Apr 200483248734.475.86$31,532
Mar 20041,23548834.365.53$45,133
Feb 20041,78391932.455.51$62,922
Jan 20042,22755932.036.30$74,852
Dec 20031,03845030.266.30$34,246
Nov 200391548028.804.60$28,558
Oct 20031,70048428.174.76$50,193
Sep 200343116126.314.75$12,104
Aug 200388133529.765.13$27,937
Jul 200362645429.415.17$20,758
Jun 200388558628.565.98$28,782
May 200391056626.595.97$27,577
Apr 200381853426.675.41$24,704
Mar 20031,23712331.146.10$39,270
Feb 200380720433.487.93$28,635
Jan 200369623430.315.58$22,402
Dec 2002021526.914.85$1,044
Nov 2002016224.664.14$670
Oct 2002015426.464.23$651
Sep 200207427.443.64$269
Aug 200205025.963.16$158
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 2001232016.932.36$3,928
Nov 2001899018.072.41$16,245
Oct 20011,0142,16319.782.53$25,527
Sep 20015911,58424.262.25$17,904
Aug 20014872,95724.873.05$21,140
Jul 20017471,89623.933.20$23,937
Jun 20019511,30124.563.82$28,332
May 200142964625.524.31$13,731
Apr 20018341,35124.685.34$27,791
Mar 20016931,11724.545.38$23,012
Feb 200143358227.755.77$15,372
Jan 2001325027.478.40$8,928
Dec 2000067126.889.12$6,121
Nov 20006381,43632.215.66$28,675
Oct 20007941,83531.235.15$34,239
Sep 20005692,12031.875.19$29,129
Aug 20007992,20429.644.54$33,690
Jul 20008742,01228.534.09$33,164
Jun 20002861,15329.304.40$13,450
May 20001,0581,18127.263.68$33,187
Apr 20001,1271,06424.513.12$30,938
Mar 200030430228.422.86$9,503
Feb 20001027.622.73$28
Jan 200082016825.272.48$21,138
Dec 19999911,91224.282.42$28,696
Nov 19999571,27423.192.43$25,294
Oct 199998794020.982.80$23,343
Sep 19991,00820221.752.62$22,453
Aug 19999163,15419.262.88$26,712
Jul 19991,0563,17417.892.37$26,422
Jun 19991,2263,93115.942.36$28,828
May 19991,4092,96015.792.32$29,118
Apr 199976015.102.21$1,148
Mar 19992382612.471.84$3,016
Feb 19997201,6189.981.82$10,127
Jan 19999892,57310.381.90$15,154
Dec 19981,1447,7369.201.77$24,243
Nov 19986574,52810.892.19$17,052
Oct 19987831,89712.421.97$13,460
Sep 19987141,78712.592.08$12,711
Aug 19988981,89111.301.91$13,754
Jul 19988113,32811.742.24$16,967
Jun 19987921,59211.242.24$12,464
May 19981,3711,84812.622.21$21,379
Apr 19986521,42913.042.51$12,082
Mar 19988761,30712.802.31$14,231
Feb 19981753,50813.952.30$10,507
Jan 19981,1981,59714.702.15$21,052
Dec 199780160216.322.41$14,524
Nov 199783860918.193.09$17,124
Oct 199794724819.253.15$19,011
Sep 19978661,25317.742.95$19,065
Aug 19971,1711,12517.862.55$23,788
Jul 19971,0801,71117.582.25$22,831
Jun 19971,1291,34717.242.26$22,504
May 19971,1861,42618.972.31$25,790
Apr 19971,4281,46517.882.08$28,584
Mar 19971,0211,94218.951.94$23,114
Feb 19979411,38820.492.21$22,343
Jan 19971,0291,47423.483.54$29,378
Dec 19961,0321,64823.32$24,066
Nov 19969141,72421.97$20,081
Oct 19966931,64023.31$16,154
Sep 199667379522.22$14,954
Aug 19961,1181,58820.26$22,651
Jul 199680136919.55$15,660
Jun 19961,0691,09918.73$20,022
May 19961,0932,02919.43$21,237
Apr 19961,2331,06021.51$26,522
Mar 199689210219.38$17,287
Feb 199688777016.98$15,061
Jan 19961,1961,29917.07$20,416
Dec 19951,1201,48417.19$19,253
Nov 19951,1271,40616.00$18,032
Oct 19951,2061,65515.43$18,609
Sep 19951,3482,19016.18$21,811
Aug 19951,1401,43515.92$18,149
Jul 19951,20890715.24$18,410
Jun 19951,08396816.41$17,772
May 19951,1511,09617.56$20,212
Apr 19951,10758417.73$19,627
Mar 19951,07047716.44$17,591
Feb 19951,03367316.58$17,127
Jan 199597664915.92$15,538
Dec 19941,03066615.03$15,481
Nov 19941,06922515.90$16,997
Oct 19941,18946215.58$18,525
Sep 19941,0811,04415.29$16,528
Aug 19941,13979416.13$18,372
Jul 19949351,59817.56$16,419
Jun 19941,04286617.09$17,808
May 199497769815.88$15,515
Apr 19941,14081714.14$16,120
Mar 19941,2231,74212.46$15,239
Feb 19941,13091212.50$14,125
Jan 19941,2561,19312.66$15,901
Dec 19931,5141,59012.33$18,668
Nov 199393678514.49$13,563
Oct 19931,4541,41615.85$23,046
Sep 19931,61599515.03$24,273
Aug 19931,93082215.66$30,224
Jul 19932,2971,29715.46$35,512
Jun 19931827116.79$302
May 19932,4731,96617.68$43,723
Apr 199363181018.05$11,390
Mar 199360677318.14$10,993
Feb 19931,7201,31917.90$30,788
Jan 19931,7821,05816.93$30,169

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                  481 bbl  × $106.41 =    $51,183
Casinghead gas       110 Mcf  × $  3.05 =       $335

────────────────────────────────────────────────────
Month total                                  $51,518

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. 02/O/3981 is the state's own key, not one this site invented.