O'CONNER, MARY ELLEN

Operated by DOLPHIN PETROLEUM, LP (P-5 222226) in the MARY ELLEN OCONNOR (D-1) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5612District 02Field 57911052NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.7 M
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 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 19 leases and 31 wells, and the rule below applies to all of them.

Discovered
1954-04-18
as the register files it
Field class
Oil and gas
the register's own label
Between wells
933 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 40 acres.

The Commission's schedule remark for this field reads: ALLOWABLE OF GAS TO 214MCF FROM 168MCF PER DAY.

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
NGPA2none

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
OilDisposition87,086 bbl$2,070,313
Casinghead gasProduction486,451 Mcf$602,010
Total$2,672,323

363,115 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 28.2590, -97.2303. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.4 miles.

28.25814, -97.23201 · 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%
13 of 13 wells
With a plug date
100.0%
13 of 13 wells
Median depth
5,953 ft
13 wells filed one
Completion to plug
29.8 years
median over 13 wells

What the state filed about each well

On the RRC proration schedule
13100.0%
A plug date is filed
13100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
13100.0%
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, 13 of 13 wells. Median 5,953 ft, with the middle half between 5,550 and 6,050 ft; the shallowest is 4,150 ft and the deepest 9,500 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, 13 of 13 wells, May 1970 – Jul 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
May 1970 – Jul 1992
13 of 13 wells
Plug dates filed
Feb 2005 – Oct 2022
13 of 13 wells

Last completion to plug: a median of 29.8 years across the 13 wells that filed both dates, with the middle half between 24.5 years and 38.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

13 wells

42-39130597476,408 ftJul 1992Apr 2022Yes
42-39130008305,950 ftJul 1987Feb 2005Yes
42-391019771 L6,003 ftMay 1987Apr 2009Yes
42-39131249529,500 ftDec 1986Apr 2022Yes
42-39130038155,515 ftJan 1986Nov 2010Yes
42-39104041285,950 ftSep 1985May 2022Yes
42-3913007633 U5,953 ftFeb 1984Oct 2005Yes
42-39130584456,400 ftDec 1983Apr 2022Yes
42-391018657 L6,050 ftApr 1981Oct 2005Yes
42-39104055245,550 ftApr 1979Feb 2005Yes
42-39103981255,545 ftMar 1979May 2022Yes
42-39101872234,150 ftAug 1978May 2022Yes
42-3913008134 U5,970 ftMay 1970Oct 2022Yes

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 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
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 2016198941.622.92$1,051
Jun 20163812345.352.69$2,054
May 20162110342.521.99$1,098
Apr 20164010936.561.99$1,679
Mar 20162010933.011.79$856
Feb 20162010126.472.06$738
Jan 20162011827.352.36$826
Dec 20154221832.362.00$1,795
Nov 20154122838.792.17$2,085
Oct 20152018843.552.43$1,327
Sep 20153922742.992.76$2,303
Aug 20154031040.162.87$2,497
Jul 20154141348.152.95$3,190
Jun 20156062456.152.88$5,168
May 20154045355.212.96$3,547
Apr 2015406649.822.71$2,171
Mar 20154315142.892.93$2,287
Feb 20154311344.662.98$2,257
Jan 20154410943.433.10$2,249
Dec 20146615554.693.59$4,166
Nov 20141069970.464.25$7,890
Oct 2014848178.303.90$6,893
Sep 20146311186.164.05$5,877
Aug 2014637689.394.04$5,938
Jul 2014609296.564.18$6,178
Jun 2014618398.164.74$6,381
May 20148310094.734.73$8,335
Apr 20146216895.944.81$6,756
Mar 20146512695.895.06$6,870
Feb 20146410897.406.19$6,902
Jan 20144311090.404.86$4,422
Dec 20134216591.824.35$4,575
Nov 20134119888.853.74$4,383
Oct 20136119297.423.78$6,668
Sep 201363176104.113.72$7,213
Aug 201340166104.253.52$4,755
Jul 201341189102.523.72$4,906
Jun 20134114594.403.93$4,441
May 20134116794.834.15$4,581
Apr 20134217693.964.28$4,700
Mar 20134219893.623.91$4,707
Feb 2013198991.233.42$2,038
Jan 20134112391.603.42$4,176
Dec 20121816986.773.42$2,140
Nov 20124116686.953.62$4,167
Oct 20124117489.383.40$4,256
Sep 20122018194.672.92$2,422
Aug 20124119892.662.91$4,375
Jul 20122126785.133.02$2,594
Jun 20124120379.822.52$3,784
May 20124225091.612.49$4,470
Apr 201222255101.652.00$2,745
Mar 201222278105.052.22$2,929
Feb 201241271101.102.57$4,842
Jan 20124015598.092.73$4,347
Dec 20114012796.873.24$4,286
Nov 20114315595.723.31$4,629
Oct 20114511484.983.65$4,240
Sep 20114219183.623.99$4,273
Aug 20112117883.404.15$2,490
Jul 20112617194.144.52$3,220
Jun 2011015092.904.64$696
May 20111012898.134.40$1,545
Apr 201149265105.964.33$6,340
Mar 20114425696.364.06$5,279
Feb 20112524785.644.18$3,173
Jan 20112724486.504.59$3,455
Dec 20102324285.734.35$3,024
Nov 20101523380.843.80$2,097
Oct 20102525278.103.51$2,837
Sep 20101525372.633.98$2,096
Aug 20104730173.684.42$4,793
Jul 201026072.554.74$1,886
Jun 20104930170.364.91$4,926
May 20104930171.124.24$4,760
Apr 20104832281.694.12$5,249
Mar 20102117478.394.39$2,410
Feb 20102725573.585.44$3,374
Jan 20104329974.365.96$4,981
Dec 20094120471.445.48$4,048
Nov 20092633774.593.75$3,204
Oct 20094633772.544.11$4,722
Sep 20094737065.543.06$4,214
Aug 20094839067.423.22$4,491
Jul 20094536461.133.46$4,012
Jun 20095332566.163.90$4,772
May 20095437454.743.93$4,424
Apr 20093433546.773.59$2,792
Mar 20094834842.144.06$3,435
Feb 20093336932.814.63$2,792
Jan 20093951135.865.37$4,143
Dec 20086755237.105.98$5,785
Nov 20085458455.496.86$7,003
Oct 20086555875.246.92$8,753
Sep 200842557101.767.88$8,661
Aug 200865701114.228.48$13,371
Jul 200840652131.0811.39$12,669
Jun 200865635131.3313.03$16,812
May 200838629123.1711.57$11,961
Apr 200841553110.3110.45$10,304
Mar 200877572101.909.66$13,374
Feb 20085356092.538.77$9,816
Jan 20082755190.388.21$6,962
Dec 20076855988.337.30$10,088
Nov 20074059091.677.29$7,969
Oct 20076555482.856.92$9,220
Sep 20076556175.846.24$8,433
Aug 20074152869.066.39$6,204
Jul 20076755670.906.39$8,302
Jun 20072748262.007.55$5,312
May 20079252958.747.85$9,555
Apr 200710753959.617.81$10,585
Mar 20076747256.927.30$7,260
Feb 20079047155.108.22$8,829
Jan 200710343950.306.73$8,134
Dec 20067745656.656.92$7,517
Nov 200610217154.207.62$6,831
Oct 200616114054.906.01$9,681
Sep 20067951260.085.04$7,325
Aug 20068957768.717.34$10,350
Jul 200614434869.376.34$12,197
Jun 200614932866.286.38$11,970
May 200613733366.016.42$11,183
Apr 200616439964.397.36$13,497
Mar 200612939356.707.08$10,098
Feb 200614431057.597.75$10,696
Jan 200616238960.598.93$13,291
Dec 200518934854.9413.42$15,052
Nov 200515934854.6910.59$12,380
Oct 200514634058.3413.80$13,208
Sep 200516177961.4512.08$19,303
Aug 20051641,16261.519.80$21,472
Jul 200518278855.697.84$16,316
Jun 200517987852.337.38$15,848
May 200522774745.226.65$15,233
Apr 20051415,03349.207.36$43,983
Mar 20051432,40650.377.15$24,418
Feb 200538045.226.31$1,718
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 20044920142.375.55$3,192
Jul 20048516838.286.08$4,276
Jun 200411831436.106.43$6,280
May 200411724437.486.49$5,970
Apr 200411725034.475.86$5,498
Mar 200417464234.365.53$9,529
Feb 200416962332.455.51$8,917
Jan 200419752432.036.30$9,611
Dec 200326653930.266.30$11,446
Nov 200315462528.804.60$7,307
Oct 200328172428.174.76$11,362
Sep 200323569026.314.75$9,460
Aug 200329897429.765.13$13,865
Jul 200326489229.415.17$12,377
Jun 200335391328.565.98$15,544
May 20033041,03726.595.97$14,277
Apr 200328064526.675.41$10,955
Mar 200325382531.146.10$12,908
Feb 200328180133.487.93$15,757
Jan 200337799830.315.58$16,998
Dec 20023871,00026.914.85$15,268
Nov 200231687824.664.14$11,425
Oct 20023381,01726.464.23$13,245
Sep 20023241,05527.443.64$12,726
Aug 20023181,06125.963.16$11,612
Jul 20023311,42524.583.06$12,499
Jun 200225899023.733.34$9,427
May 200225484124.663.58$9,278
Apr 200236181323.653.51$11,393
Mar 20023021,01522.003.10$9,793
Feb 200225280118.222.38$6,494
Jan 200231790117.172.38$7,583
Dec 200131892016.932.36$7,559
Nov 200133491718.072.41$8,241
Oct 20013431,03219.782.53$9,394
Sep 200134093624.262.25$10,356
Aug 20013371,05024.873.05$11,587
Jul 20013601,03223.933.20$11,914
Jun 20013681,25324.563.82$13,830
May 20015601,34425.524.31$20,080
Apr 20014261,28324.685.34$17,359
Mar 20014471,38424.545.38$18,410
Feb 20014041,18527.755.77$18,045
Jan 20014441,42127.478.40$24,131
Dec 20004321,31726.889.12$23,626
Nov 20004561,02432.215.66$20,482
Oct 20004571,05931.235.15$19,721
Sep 20004141,17831.875.19$19,304
Aug 20004711,21829.644.54$19,491
Jul 20004111,17928.534.09$16,548
Jun 20004371,09129.304.40$17,602
May 20004431,22227.263.68$16,573
Apr 20004121,12624.513.12$13,607
Mar 20004301,97728.422.86$17,874
Feb 200040596027.622.73$13,804
Jan 20004591,04525.272.48$14,191
Dec 19994251,14724.282.42$13,099
Nov 19994481,02223.192.43$12,877
Oct 19994531,14120.982.80$12,703
Sep 19994171,11421.752.62$11,987
Aug 19994571,24319.262.88$12,376
Jul 19994511,25317.892.37$11,041
Jun 19994751,10815.942.36$10,189
May 19995821,38315.792.32$12,400
Apr 19996601,25615.102.21$12,739
Mar 199956524712.471.84$7,500
Feb 19995682599.981.82$6,139
Jan 199971736510.381.90$8,136
Dec 19986802859.201.77$6,761
Nov 199871835210.892.19$8,588
Oct 199867329612.421.97$8,942
Sep 199868628812.592.08$9,237
Aug 199864930211.301.91$7,910
Jul 199872832111.742.24$9,265
Jun 199851932211.242.24$6,554
May 199868935112.622.21$9,470
Apr 199865925613.042.51$9,235
Mar 199873928812.802.31$10,124
Feb 199863123613.952.30$9,345
Jan 199871423814.702.15$11,009
Dec 199772628016.322.41$12,523
Nov 199768915018.193.09$12,996
Oct 199762919019.253.15$12,707
Sep 19977226617.742.95$13,003
Aug 199773074817.862.55$14,949
Jul 199776960917.582.25$14,887
Jun 199761651917.242.26$11,791
May 19977181,10118.972.31$16,162
Apr 199770068017.882.08$13,932
Mar 199774870218.951.94$15,536
Feb 199764460220.492.21$14,524
Jan 199769233323.483.54$17,427
Dec 199668328223.32$15,928
Nov 199669728021.97$15,313
Oct 199674230723.31$17,296
Sep 199670429022.22$15,643
Aug 199672733120.26$14,729
Jul 199671562419.55$13,978
Jun 199675569918.73$14,141
May 19969121,60519.43$17,720
Apr 19968852,25821.51$19,036
Mar 19969902,75819.38$19,186
Feb 19968893,88916.98$15,095
Jan 19969324,96217.07$15,909
Dec 19959204,74917.19$15,815
Nov 19958765,16616.00$14,016
Oct 19959465,81315.43$14,597
Sep 19959156,03516.18$14,805
Aug 19951,0296,51115.92$16,382
Jul 19951,0237,13415.24$15,591
Jun 19959657,63416.41$15,836
May 19957828,37817.56$13,732
Apr 19958949,73517.73$15,851
Mar 199587110,31716.44$14,319
Feb 199583310,38816.58$13,811
Jan 199593410,51915.92$14,869
Dec 19941,00510,94415.03$15,105
Nov 199499910,45915.90$15,884
Oct 199488810,79815.58$13,835
Sep 199471810,39315.29$10,978
Aug 199473810,53816.13$11,904
Jul 199474410,64417.56$13,065
Jun 199468410,48017.09$11,690
May 199470111,39215.88$11,132
Apr 19946789,88814.14$9,587
Mar 19945739,89312.46$7,140
Feb 19945338,94012.50$6,663
Jan 199458210,07012.66$7,368
Dec 199361410,70412.33$7,571
Nov 19936669,78914.49$9,650
Oct 199372810,35615.85$11,539
Sep 19936879,98215.03$10,326
Aug 19936379,93615.66$9,975
Jul 199372710,12515.46$11,239
Jun 199375310,50016.79$12,643
May 199376110,35717.68$13,454
Apr 199373210,67818.05$13,213
Mar 199368610,56218.14$12,444
Feb 199371311,16417.90$12,763
Jan 199379513,85916.93$13,459

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.

Jul 2016 — as filed, then multipliedworked
Oil                   19 bbl  × $ 41.62 =       $791
Casinghead gas        89 Mcf  × $  2.92 =       $260

────────────────────────────────────────────────────
Month total                                   $1,051

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/5612 is the state's own key, not one this site invented.