OCONNOR, MARY ELLEN

Operated by DOLPHIN PETROLEUM, LP (P-5 222226) in the MARY ELLEN OCONNOR (8200) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5588District 02Field 57911995NGPA filingOilCasinghead gasSaveExport
Value, all time
$621 k
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 2 leases and 2 wells, and the rule below applies to all of them.

Discovered
1978-05-25
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
NGPA1none

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
OilDisposition6,151 bbl$359,095
Casinghead gasProduction79,691 Mcf$261,560
Total$620,655

17,873 Mcf of this lease's gas, across 21 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 (1)

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 28.2521, -97.2163. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.25209, -97.21632 · 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%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
8,500 ft
1 wells filed one
Completion to plug
44.1 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
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

The one well that filed a depth was drilled to 8,500 ft.

Completions filed
May 1978
1 of 1 wells
Plug dates filed
Jun 2022
1 of 1 wells

Last completion to plug: a median of 44.1 years across the 1 well that filed both dates, with the middle half between 44.1 years and 44.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-39131214518,500 ftMay 1978Jun 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 201662541.622.92$323
Jun 2016139645.352.69$847
May 2016710242.521.99$501
Apr 2016149536.561.99$701
Mar 201678533.011.79$384
Feb 201679626.472.06$383
Jan 201678427.352.36$390
Dec 20151514732.362.00$780
Nov 20151416438.792.17$899
Oct 2015719043.552.43$766
Sep 20151411342.992.76$914
Aug 20151420140.162.87$1,140
Jul 20151420648.152.95$1,281
Jun 20152118656.152.88$1,715
May 20151426255.212.96$1,547
Apr 2015143649.822.71$795
Mar 2015438842.892.93$2,103
Feb 2015439644.662.98$2,206
Jan 20154410543.433.10$2,236
Dec 2014669354.693.59$3,944
Nov 20141198070.464.25$8,725
Oct 2014848178.303.90$6,893
Sep 20146310486.164.05$5,849
Aug 2014638889.394.04$5,987
Jul 2014609296.564.18$6,178
Jun 2014618998.164.74$6,409
May 2014839094.734.73$8,288
Apr 2014628195.944.81$6,338
Mar 2014656395.895.06$6,551
Feb 2014649497.406.19$6,816
Jan 2014439990.404.86$4,368
Dec 20134210291.824.35$4,301
Nov 2013419988.853.74$4,013
Oct 2013619997.423.78$6,317
Sep 20136398104.113.72$6,923
Aug 201340101104.253.52$4,526
Jul 201341101102.523.72$4,579
Jun 2013418994.403.93$4,220
May 20134110394.834.15$4,315
Apr 2013429893.964.28$4,366
Mar 2013429993.623.91$4,319
Feb 2013198991.233.42$2,038
Jan 20134112391.603.42$4,176
Dec 20121810986.773.42$1,935
Nov 20124111586.953.62$3,982
Oct 20124110189.383.40$4,008
Sep 20122010694.672.92$2,203
Aug 20124110992.662.91$4,116
Jul 20122111085.133.02$2,120
Jun 20124115679.822.52$3,666
May 20124212391.612.49$4,154
Apr 201222178101.652.00$2,592
Mar 201222189105.052.22$2,731
Feb 201241135101.102.57$4,492
Jan 20124011598.092.73$4,238
Dec 20114012796.873.24$4,286
Nov 20114312195.723.31$4,517
Oct 20114511484.983.65$4,240
Sep 20114215583.623.99$4,130
Aug 20112111483.404.15$2,224
Jul 2011268594.144.52$2,832
Jun 201107592.904.64$348
May 2011106498.134.40$1,263
Apr 201139136105.964.33$4,722
Mar 20114412896.364.06$4,759
Feb 20112512385.644.18$2,655
Jan 20112712286.504.59$2,895
Dec 20102312185.734.35$2,498
Nov 20101511780.843.80$1,657
Oct 20101212678.103.51$1,379
Sep 2010012772.633.98$505
Aug 201023073.684.42$1,695
Jul 201013072.554.74$943
Jun 20102418470.364.91$2,592
May 20102415171.124.24$2,346
Apr 20102016181.694.12$2,298
Mar 20102117478.394.39$2,410
Feb 2010012873.585.44$697
Jan 2010015074.365.96$895
Dec 2009010271.445.48$559
Nov 20091316874.593.75$1,600
Oct 20092317272.544.11$2,375
Sep 20092319765.543.06$2,111
Aug 20092420167.423.22$2,265
Jul 20092220061.133.46$2,038
Jun 20092719566.163.90$2,546
May 20092726554.743.93$2,518
Apr 20092623446.773.59$2,056
Mar 20093221042.144.06$2,201
Feb 20092422732.814.63$1,839
Jan 20091228035.865.37$1,934
Dec 20082032537.105.98$2,685
Nov 20081736755.496.86$3,461
Oct 20082031575.246.92$3,685
Sep 200813302101.767.88$3,702
Aug 200820406114.228.48$5,729
Jul 200812366131.0811.39$5,741
Jun 200820369131.3313.03$7,436
May 200812356123.1711.57$5,598
Apr 200812297110.3110.45$4,429
Mar 200823336101.909.66$5,591
Feb 20081631292.538.77$4,217
Jan 2008829390.388.21$3,127
Dec 20072130888.337.30$4,104
Nov 20071237291.677.29$3,813
Oct 20072032182.856.92$3,879
Sep 20072034375.846.24$3,659
Aug 20071230469.066.39$2,771
Jul 20072036270.906.39$3,730
Jun 2007829562.007.55$2,723
May 20072839058.747.85$4,705
Apr 20073340059.617.81$5,089
Mar 20072029356.927.30$3,278
Feb 20072734355.108.22$4,306
Jan 20073131750.306.73$3,692
Dec 20062431256.656.92$3,518
Nov 20062728454.207.62$3,627
Oct 20064228154.906.01$3,996
Sep 20062421360.085.04$2,515
Aug 20062320868.717.34$3,107
Jul 20062712069.376.34$2,634
Jun 2006276066.286.38$2,173
May 2006286366.016.42$2,253
Apr 20063210464.397.36$2,826
Mar 2006264156.707.08$1,765
Feb 2006275357.597.75$1,966
Jan 20063111560.598.93$2,906
Dec 2005379854.9413.42$3,347
Nov 2005279154.6910.59$2,440
Oct 2005276758.3413.80$2,500
Sep 20052915461.4512.08$3,642
Aug 2005287561.519.80$2,457
Jul 20051616755.697.84$2,201
Jun 200588252.337.38$1,024
May 2005156845.226.65$1,131
Apr 2005281849.207.36$1,510
Mar 200525050.377.15$1,259
Feb 20055045.226.31$226
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 200413042.375.55$551
Jul 20042916838.286.08$2,132
Jun 200428036.106.43$1,011
May 200431037.486.49$1,162
Apr 2004562934.475.86$2,100
Mar 200472034.365.53$2,474
Feb 200468032.455.51$2,207
Jan 2004595332.036.30$2,224
Dec 20031001830.266.30$3,139
Nov 20033831228.804.60$2,528
Oct 20037329528.174.76$3,461
Sep 20035441426.314.75$3,387
Aug 20035059629.765.13$4,545
Jul 20033834829.415.17$2,917
Jun 20034625928.565.98$2,863
May 20035130826.595.97$3,196
Apr 20035755126.675.41$4,500
Mar 20036157331.146.10$5,393
Feb 20036832033.487.93$4,813
Jan 20034635830.315.58$3,393
Dec 20021131526.914.85$1,825
Nov 20021019624.664.14$1,057
Oct 20023216226.464.23$1,532
Sep 20024242027.443.64$2,679
Aug 20021761225.963.16$2,378
Jul 20021217924.583.06$843
Jun 20021124023.733.34$1,062
May 20021521024.663.58$1,123
Apr 20022048223.653.51$2,166
Mar 20021957122.003.10$2,190
Feb 20021839518.222.38$1,266
Jan 20021839017.172.38$1,236
Dec 20011724016.932.36$855
Nov 20011526018.072.41$896
Oct 20011631819.782.53$1,121
Sep 20011524724.262.25$920
Aug 20011630924.873.05$1,341
Jul 20011541123.933.20$1,673
Jun 20011538424.563.82$1,837
May 20012244625.524.31$2,483
Apr 20011642724.685.34$2,673
Mar 20011745024.545.38$2,837
Feb 20011639127.755.77$2,699
Jan 20011750427.478.40$4,700
Dec 20001750026.889.12$5,018
Nov 20001839232.215.66$2,798
Oct 20001837431.235.15$2,487
Sep 20001647531.875.19$2,974
Aug 20001847529.644.54$2,690
Jul 20001743128.534.09$2,248
Jun 20001741229.304.40$2,310
May 20001843827.263.68$2,102
Apr 20001641124.513.12$1,673
Mar 20001728128.422.86$1,287
Feb 20001624527.622.73$1,110
Jan 20001834025.272.48$1,298
Dec 19991735524.282.42$1,273
Nov 19991834523.192.43$1,257
Oct 19991641120.982.80$1,488
Sep 19991143921.752.62$1,389
Aug 1999943419.262.88$1,421
Jul 1999835217.892.37$978
Jun 1999623215.942.36$644
May 1999531115.792.32$801
Apr 19992622615.102.21$892
Mar 1999234412.471.84$657
Feb 199945279.981.82$998
Jan 1999359010.381.90$1,152
Dec 199824579.201.77$829
Nov 1998358910.892.19$1,320
Oct 1998249012.421.97$990
Sep 1998348012.592.08$1,037
Aug 1998248711.301.91$951
Jul 1998359411.742.24$1,364
Jun 1998257811.242.24$1,316
May 1998368012.622.21$1,538
Apr 1998287413.042.51$2,216
Mar 1998373112.802.31$1,727
Feb 199851,31213.952.30$3,086
Jan 199861,33014.702.15$2,954
Dec 1997283216.322.41$2,039
Nov 1997382118.193.09$2,590
Oct 1997377019.253.15$2,483
Sep 1997389517.742.95$2,698
Aug 1997346217.862.55$1,234
Jul 1997447217.582.25$1,131
Jun 199761,29317.242.26$3,022
May 1997475318.972.31$1,814
Apr 1997770917.882.08$1,602
Mar 1997437718.951.94$807
Feb 1997232020.492.21$747
Jan 1997781323.483.54$3,042
Dec 1996557623.32$117
Nov 1996453221.97$88
Oct 1996459023.31$93
Sep 1996491922.22$89
Aug 1996461420.26$81
Jul 1996680419.55$117
Jun 1996632018.73$112
May 1996667519.43$117
Apr 1996318721.51$65
Mar 1996545819.38$97
Feb 19964016.98$68
Jan 1996718217.07$119
Dec 19952931617.19$499
Nov 19952859016.00$448
Oct 19953159615.43$478
Sep 19953057416.18$485
Aug 1995571,83815.92$907
Jul 19950015.24$0
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950016.44$0
Feb 19950016.58$0
Jan 19950015.92$0
Dec 19940015.03$0
Nov 19940015.90$0
Oct 19940015.58$0
Sep 19940015.29$0
Aug 19940016.13$0
Jul 19940017.56$0
Jun 19940017.09$0
May 199439615.88$48
Apr 1994281,92914.14$396
Mar 1994292,02912.46$361
Feb 1994251,83312.50$313
Jan 1994732,21512.66$924
Dec 19930012.33$0
Nov 19930014.49$0
Oct 19930015.85$0
Sep 19930015.03$0
Aug 19930015.66$0
Jul 199312015.46$186
Jun 19930016.79$0
May 19930017.68$0
Apr 19930018.05$0
Mar 19930018.14$0
Feb 19930017.90$0
Jan 19930016.93$0

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                    6 bbl  × $ 41.62 =       $250
Casinghead gas        25 Mcf  × $  2.92 =        $73

────────────────────────────────────────────────────
Month total                                     $323

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/5588 is the state's own key, not one this site invented.