OCONNOR, MARY ELLEN

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

Oil lease lease 5253District 02Field 57911858NGPA filingOilCasinghead gasSaveExport
Value, all time
$3.1 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 10 leases and 24 wells, and the rule below applies to all of them.

Discovered
1969-02-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,200 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 160 acres.

The Commission's schedule remark for this field reads: FIELD RULES EFFECTIVE 9-1-79

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
OilDisposition57,272 bbl$2,157,141
Casinghead gasProduction260,500 Mcf$985,317
Total$3,142,458

83,607 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 (9)

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 28.2516, -97.2162. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.7 miles.

28.25299, -97.21670 · 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%
9 of 9 wells
With a plug date
100.0%
9 of 9 wells
Median depth
6,100 ft
9 wells filed one
Completion to plug
35.3 years
median over 9 wells

What the state filed about each well

On the RRC proration schedule
9100.0%
A plug date is filed
9100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
9100.0%
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, 9 of 9 wells. Median 6,100 ft, with the middle half between 6,000 and 6,400 ft; the shallowest is 5,100 ft and the deepest 6,400 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, 9 of 9 wells, Feb 1978 – Oct 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
Feb 1978 – Oct 1992
9 of 9 wells
Plug dates filed
Jan 2005 – Mar 2022
9 of 9 wells

Last completion to plug: a median of 35.3 years across the 9 wells that filed both dates, with the middle half between 29.0 years and 37.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

9 wells

42-39101867146,000 ftOct 1992Oct 2021Yes
42-39130568386,400 ftJul 1992Nov 2021Yes
42-39101848105,600 ftMar 1988Jan 2005Yes
42-39130563396,400 ftDec 1986Mar 2022Yes
42-39130576366,100 ftDec 1986Mar 2022Yes
42-39130587426,400 ftSep 1984Nov 2021Yes
42-39130572376,100 ftApr 1984Jan 2005Yes
42-39130560416,100 ftDec 1983Oct 2021Yes
42-39131218505,100 ftFeb 1978Oct 2021Yes

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 2016389641.622.92$1,862
Jun 20167615945.352.69$3,874
May 20164220542.521.99$2,194
Apr 20165015536.561.99$2,137
Mar 20164015533.011.79$1,598
Feb 20164015926.472.06$1,387
Jan 20164019827.352.36$1,562
Dec 20158429832.362.00$3,315
Nov 20158229238.792.17$3,814
Oct 20154037043.552.43$2,640
Sep 20157954042.992.76$4,886
Aug 20158060840.162.87$4,959
Jul 20158266948.152.95$5,919
Jun 201511945556.152.88$7,994
May 20157967955.212.96$6,368
Apr 2015813549.822.71$4,130
Mar 20156816542.892.93$3,401
Feb 201513019944.662.98$6,398
Jan 201513319943.433.10$6,393
Dec 201419917854.693.59$11,523
Nov 201429211170.464.25$21,046
Oct 201425116578.303.90$20,297
Sep 201418811686.164.05$16,667
Aug 201419016489.394.04$17,646
Jul 201418117696.564.18$18,213
Jun 201418410198.164.74$18,540
May 201416211594.734.73$15,890
Apr 201418624595.944.81$19,023
Mar 201419623995.895.06$20,003
Feb 201419214197.406.19$19,574
Jan 201412816590.404.86$12,373
Dec 201312719891.824.35$12,523
Nov 201312429988.853.74$12,135
Oct 201318421297.423.78$18,727
Sep 2013188214104.113.72$20,368
Aug 2013121203104.253.52$13,329
Jul 2013122254102.523.72$13,452
Jun 201312427294.403.93$12,775
May 201312226594.834.15$12,669
Apr 201312721593.964.28$12,854
Mar 201312526593.623.91$12,739
Feb 20135825191.233.42$6,150
Jan 201312331391.603.42$12,337
Dec 20125531386.773.42$5,843
Nov 201212429586.953.62$11,851
Oct 201212225189.383.40$11,758
Sep 20122028794.672.92$2,731
Aug 201212330992.662.91$12,296
Jul 20126337585.133.02$6,496
Jun 201212336379.822.52$10,732
May 201212338891.612.49$12,234
Apr 201265362101.652.00$7,330
Mar 201265369105.052.22$7,648
Feb 2012123406101.102.57$13,479
Jan 201211128198.092.73$11,656
Dec 201112018296.873.24$12,214
Nov 201113019995.723.31$13,103
Oct 201113634184.983.65$12,801
Sep 201112734183.623.99$11,979
Aug 20115024183.404.15$5,170
Jul 20117825694.144.52$8,499
Jun 2011019992.904.64$923
May 20115619198.134.40$6,337
Apr 201185395105.964.33$10,718
Mar 201113338596.364.06$14,378
Feb 20115037085.644.18$5,829
Jan 201110936686.504.59$11,108
Dec 20109136385.734.35$9,380
Nov 20106035080.843.80$6,179
Oct 20105037878.103.51$5,231
Sep 20105838072.633.98$5,725
Aug 201094073.684.42$6,926
Jul 201052072.554.74$3,773
Jun 20109544770.364.91$8,879
May 20109845271.124.24$8,884
Apr 20109548481.694.12$9,756
Mar 20108452378.394.39$8,880
Feb 20105538373.585.44$6,131
Jan 20108745874.365.96$9,201
Dec 20098130771.445.48$7,470
Nov 20095150574.593.75$5,699
Oct 20099250972.544.11$8,766
Sep 20099356965.543.06$7,839
Aug 20099559367.423.22$8,313
Jul 20099056961.133.46$7,473
Jun 200910652666.163.90$9,062
May 200910865554.743.93$8,483
Apr 200910558246.773.59$6,999
Mar 200912856542.144.06$7,687
Feb 20098960832.814.63$5,737
Jan 20099878835.865.37$7,747
Dec 200816787237.105.98$11,408
Nov 200813594355.496.86$13,960
Oct 200816186975.246.92$18,129
Sep 2008105856101.767.88$17,428
Aug 20081631,102114.228.48$27,966
Jul 20081011,014131.0811.39$24,788
Jun 2008163999131.3313.03$34,426
May 200896980123.1711.57$23,167
Apr 2008102848110.3110.45$20,117
Mar 2008192902101.909.66$28,282
Feb 200813186992.538.77$19,743
Jan 20086784290.388.21$12,965
Dec 200716986488.337.30$21,237
Nov 200710195491.677.29$16,215
Oct 200716387182.856.92$19,534
Sep 200716389775.846.24$17,963
Aug 200710282769.066.39$12,327
Jul 200716790970.906.39$17,647
Jun 20076877162.007.55$10,036
May 200723090558.747.85$20,611
Apr 200726892559.617.81$23,195
Mar 200716675856.927.30$14,984
Feb 200722480255.108.22$18,932
Jan 200725774550.306.73$17,939
Dec 200619376056.656.92$16,191
Nov 200610861654.207.62$10,546
Oct 20067510554.906.01$4,749
Sep 20069474260.085.04$9,385
Aug 200618689368.717.34$19,335
Jul 20062741,07669.376.34$25,832
Jun 200627898666.286.38$24,720
May 20062701,01466.016.42$24,338
Apr 20063231,18464.397.36$29,513
Mar 20062531,18956.707.08$22,767
Feb 200627494357.597.75$23,089
Jan 20062631,16760.598.93$26,360
Dec 20053271,04554.9413.42$31,984
Nov 20052041,04354.6910.59$22,200
Oct 20051981,05158.3413.80$26,051
Sep 20052652,35961.4512.08$44,779
Aug 20052782,40561.519.80$40,661
Jul 20053102,37055.697.84$35,853
Jun 20053012,63452.337.38$35,193
May 20053262,22745.226.65$29,554
Apr 200520215,66249.207.36$125,218
Mar 200528111,54750.377.15$96,771
Feb 200593045.226.31$4,205
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 200419596342.375.55$13,607
Jul 200423980638.286.08$14,053
Jun 20042011,00536.106.43$13,721
May 200422879337.486.49$13,696
Apr 200421276134.475.86$11,766
Mar 200427375134.365.53$13,533
Feb 200425172832.455.51$12,156
Jan 200423456832.036.30$11,073
Dec 200328962230.266.30$12,665
Nov 200312470828.804.60$6,825
Oct 200327474228.174.76$11,250
Sep 200321466426.314.75$8,784
Aug 200324288129.765.13$11,721
Jul 200321275329.415.17$10,129
Jun 200327986428.565.98$13,138
May 200324689926.595.97$11,911
Apr 200323165826.675.41$9,719
Mar 200320281631.146.10$11,265
Feb 200322376333.487.93$13,513
Jan 200330395630.315.58$14,520
Dec 200230596326.914.85$12,882
Nov 200225184424.664.14$9,681
Oct 200228197826.464.23$11,571
Sep 20023121,00927.443.64$12,229
Aug 20023231,01525.963.16$11,597
Jul 20023431,35124.583.06$12,567
Jun 200226295223.733.34$9,395
May 200224880824.663.58$9,012
Apr 200239078423.653.51$11,977
Mar 200228296622.003.10$9,201
Feb 200225775818.222.38$6,483
Jan 200235986117.172.38$8,209
Dec 200138588516.932.36$8,611
Nov 200138587718.072.41$9,067
Oct 200138497819.782.53$10,069
Sep 200137489824.262.25$11,095
Aug 20013721,00024.873.05$12,305
Jul 200136498323.933.20$11,853
Jun 200127299524.563.82$10,485
May 20013041,07325.524.31$12,380
Apr 20012311,02524.685.34$11,170
Mar 20012421,10324.545.38$11,869
Feb 200122194627.755.77$11,588
Jan 20012411,14027.478.40$16,195
Dec 20002341,06226.889.12$15,978
Nov 200024987032.215.66$12,943
Oct 200024689731.235.15$12,298
Sep 20002261,00031.875.19$12,389
Aug 20003031,03629.644.54$13,685
Jul 20003281,03728.534.09$13,599
Jun 200035096329.304.40$14,490
May 200035293127.263.68$13,021
Apr 200031886224.513.12$10,480
Mar 200033469428.422.86$11,477
Feb 200032373627.622.73$10,928
Jan 200038069225.272.48$11,319
Dec 199934773824.282.42$10,214
Nov 199936967023.192.43$10,188
Oct 199937775920.982.80$10,037
Sep 199933470821.752.62$9,119
Aug 199933680119.262.88$8,775
Jul 199931573617.892.37$7,381
Jun 199930163115.942.36$6,288
May 199933084415.792.32$7,170
Apr 199933859115.102.21$6,409
Mar 199929435412.471.84$4,317
Feb 19993273759.981.82$3,945
Jan 199936067010.381.90$5,010
Dec 19983415189.201.77$4,056
Nov 199836064710.892.19$5,335
Oct 199833153812.421.97$5,170
Sep 199833952712.592.08$5,366
Aug 199831955111.301.91$4,656
Jul 199834058811.742.24$5,307
Jun 199824259111.242.24$4,042
May 199837764312.622.21$6,176
Apr 199830562113.042.51$5,533
Mar 199813538612.802.31$2,619
Feb 199823660213.952.30$4,676
Jan 199826861114.702.15$5,256
Dec 199733571916.322.41$7,201
Nov 199734368618.193.09$8,358
Oct 199732062319.253.15$8,122
Sep 199730774617.742.95$7,651
Aug 199733186417.862.55$8,119
Jul 199730170717.582.25$6,880
Jun 199730874517.242.26$6,992
May 199731493718.972.31$8,120
Apr 199731682117.882.08$7,360
Mar 199738482918.951.94$8,884
Feb 199728774320.492.21$7,520
Jan 199733378623.483.54$10,601
Dec 199635182223.32$8,185
Nov 199633481121.97$7,338
Oct 199635688523.31$8,298
Sep 199631784422.22$7,044
Aug 199633672820.26$6,807
Jul 19963081,21119.55$6,021
Jun 19963151,36018.73$5,900
May 19963211,56919.43$6,237
Apr 19962751,23621.51$5,915
Mar 19963781,50119.38$7,326
Feb 19962941,06116.98$4,992
Jan 199627074217.07$4,609
Dec 199530463217.19$5,226
Nov 199529058916.00$4,640
Oct 199531359515.43$4,830
Sep 199530457216.18$4,919
Aug 199530655715.92$4,872
Jul 199526271215.24$3,993
Jun 199526868316.41$4,398
May 199531769017.56$5,567
Apr 199527754017.73$4,911
Mar 199530059716.44$4,932
Feb 19952501,34916.58$4,145
Jan 19951801,42115.92$2,866
Dec 19941731,43915.03$2,600
Nov 199416155015.90$2,560
Oct 199429986515.58$4,658
Sep 19942681,64015.29$4,098
Aug 19942652,16816.13$4,274
Jul 19942561,52017.56$4,495
Jun 19942161,41617.09$3,691
May 19942311,96515.88$3,668
Apr 19941452,04914.14$2,050
Mar 19941482,40812.46$1,844
Feb 19941312,44812.50$1,638
Jan 19941632,32212.66$2,064
Dec 19931552,87112.33$1,911
Nov 19931542,55414.49$2,231
Oct 19931642,47115.85$2,599
Sep 19931542,61315.03$2,315
Aug 19931473,39215.66$2,302
Jul 19931543,45715.46$2,381
Jun 19931483,49916.79$2,485
May 19931503,69917.68$2,652
Apr 19931483,93518.05$2,671
Mar 19931524,37718.14$2,757
Feb 19931473,79717.90$2,631
Jan 19931544,44516.93$2,607

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                   38 bbl  × $ 41.62 =     $1,582
Casinghead gas        96 Mcf  × $  2.92 =       $281

────────────────────────────────────────────────────
Month total                                   $1,862

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/5253 is the state's own key, not one this site invented.