O'CONNER, MARY ELLEN

Operated by DOLPHIN PETROLEUM, LP (P-5 222226) in the MARY ELLEN OCONNOR (FQ-25) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5905District 02Field 57911234NGPA filingOilCasinghead gasSaveExport
Value, all time
$1.4 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 8 leases and 10 wells, and the rule below applies to all of them.

Discovered
1954-01-22
as the register files it
Field class
Oil and gas
the register's own label
Between wells
933 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 1990-09-01.

The Commission's schedule remark for this field reads: ALLOCATION FORMULA EFFECTIVE 09/01/90.

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
OilDisposition32,203 bbl$1,097,826
Casinghead gasProduction80,026 Mcf$348,092
Total$1,445,918

17,733 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 (2)

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 28.2556, -97.2242. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

28.25563, -97.22416 · 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%
2 of 2 wells
With a plug date
100.0%
2 of 2 wells
Median depth
6,200 ft
2 wells filed one
Completion to plug
38.5 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
2100.0%
A plug date is filed
2100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
2100.0%
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

Between 6,000 and 6,400 ft, median 6,200 ft, over the 2 wells that filed a depth.

Completions filed
Apr 1980 – Apr 1987
2 of 2 wells
Plug dates filed
Apr 2022
2 of 2 wells

Last completion to plug: a median of 38.5 years across the 2 wells that filed both dates, with the middle half between 36.8 years and 40.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-39130585446,400 ftApr 1987Apr 2022Yes
42-39131251556,000 ftApr 1980Apr 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 2016109641.622.92$697
Jun 2016199645.352.69$1,119
May 20161110242.521.99$671
Apr 2016209536.561.99$920
Mar 2016108533.011.79$483
Feb 2016209626.472.06$728
Jan 2016107927.352.36$460
Dec 20152114732.362.00$974
Nov 2015216438.792.17$953
Oct 20151019043.552.43$897
Sep 20152011342.992.76$1,172
Aug 20152020140.162.87$1,381
Jul 20152020648.152.95$1,570
Jun 20153031256.152.88$2,584
May 20152022655.212.96$1,772
Apr 20152011349.822.71$1,302
Mar 2015438842.892.93$2,103
Feb 20154311644.662.98$2,266
Jan 20154410543.433.10$2,236
Dec 2014669354.693.59$3,944
Nov 20141198870.464.25$8,759
Oct 2014848178.303.90$6,893
Sep 20146310586.164.05$5,853
Aug 2014638889.394.04$5,987
Jul 2014609296.564.18$6,178
Jun 2014618598.164.74$6,390
May 2014839994.734.73$8,331
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 20134210191.824.35$4,296
Nov 2013419988.853.74$4,013
Oct 20136110197.423.78$6,324
Sep 201363102104.113.72$6,938
Aug 201340100104.253.52$4,522
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 20124110386.953.62$3,938
Oct 20124110189.383.40$4,008
Sep 20122010294.672.92$2,191
Aug 20124110992.662.91$4,116
Jul 20122110885.133.02$2,114
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 2011538594.144.52$5,373
Jun 201107592.904.64$348
May 2011246498.134.40$2,637
Apr 201145137105.964.33$5,362
Mar 20114412896.364.06$4,759
Feb 20112512385.644.18$2,655
Jan 20115412286.504.59$5,231
Dec 20104612185.734.35$4,470
Nov 20103011780.843.80$2,869
Oct 20102512678.103.51$2,395
Sep 20102912772.633.98$2,612
Aug 201047073.684.42$3,463
Jul 201026072.554.74$1,886
Jun 20104915170.364.91$4,189
May 20104915171.124.24$4,124
Apr 20104816181.694.12$4,585
Mar 20104217478.394.39$4,056
Feb 20102712873.585.44$2,683
Jan 20104315074.365.96$4,092
Dec 20096110271.445.48$4,917
Nov 20093816874.593.75$3,465
Oct 20096916972.544.11$5,700
Sep 20097018765.543.06$5,161
Aug 20097119667.423.22$5,418
Jul 20096718561.133.46$4,737
Jun 20098017266.163.90$5,963
May 20098120354.743.93$5,231
Apr 20097918146.773.59$4,344
Mar 20099618542.144.06$4,796
Feb 20096719732.814.63$3,111
Jan 20094226835.865.37$2,946
Dec 20087230237.105.98$4,476
Nov 20085933255.496.86$5,552
Oct 20087029875.246.92$7,330
Sep 200846291101.767.88$6,973
Aug 200871380114.228.48$11,333
Jul 200844347131.0811.39$9,720
Jun 200871345131.3313.03$13,821
May 200841336123.1711.57$8,939
Apr 200844287110.3110.45$7,854
Mar 200883312101.909.66$11,473
Feb 20085729792.538.77$7,879
Jan 20082928590.388.21$4,960
Dec 20077329488.337.30$8,595
Nov 20074433691.677.29$6,483
Oct 20077030082.856.92$7,876
Sep 20077131475.846.24$7,345
Aug 20074428569.066.39$4,859
Jul 20077232270.906.39$7,162
Jun 20072927062.007.55$3,836
May 200710033158.747.85$8,471
Apr 200711633959.617.81$9,561
Mar 20077226656.927.30$6,041
Feb 20079729255.108.22$7,744
Jan 200711127150.306.73$7,406
Dec 20068427356.656.92$6,647
Nov 200616017254.207.62$9,982
Oct 200620814054.906.01$12,261
Sep 200613244360.085.04$10,162
Aug 200614155668.717.34$13,769
Jul 200616433569.376.34$13,502
Jun 200616629666.286.38$12,892
May 200616429566.016.42$12,721
Apr 200619534664.397.36$15,103
Mar 200615334756.707.08$11,133
Feb 200616428057.597.75$11,615
Jan 200618635560.598.93$14,441
Dec 200522431854.9413.42$16,573
Nov 200516631854.6910.59$12,446
Oct 200514647558.3413.80$15,071
Sep 200514570261.4512.08$17,390
Aug 200513870961.519.80$15,434
Jul 200517371755.697.84$15,258
Jun 200518185352.337.38$15,768
May 20052271,04245.226.65$17,195
Apr 20051417,18249.207.36$59,800
Mar 20051525,21950.377.15$44,998
Feb 200543045.226.31$1,944
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 20049220342.375.55$5,025
Jul 200411416838.286.08$5,386
Jun 200411721136.106.43$5,581
May 200412216337.486.49$5,631
Apr 200411316334.475.86$4,850
Mar 200414515634.365.53$5,845
Feb 200413515132.455.51$5,213
Jan 200412513032.036.30$4,823
Dec 200314613030.266.30$5,237
Nov 20036517328.804.60$2,667
Oct 200314218828.174.76$4,895
Sep 200310919126.314.75$3,775
Aug 200312425329.765.13$4,988
Jul 200310622929.415.17$4,302
Jun 200314023128.565.98$5,380
May 200312326226.595.97$4,835
Apr 200311418126.675.41$4,019
Mar 200310121731.146.10$4,468
Feb 200311320033.487.93$5,368
Jan 200315624930.315.58$6,118
Dec 200215924926.914.85$5,487
Nov 200212421724.664.14$3,956
Oct 200213824926.464.23$4,705
Sep 200213226427.443.64$4,582
Aug 200212926525.963.16$4,187
Jul 200213736124.583.06$4,473
Jun 200210624623.733.34$3,337
May 200210521124.663.58$3,346
Apr 200213421723.653.51$3,931
Mar 200212822022.003.10$3,499
Feb 200211017418.222.38$2,418
Jan 200214021217.172.38$2,907
Dec 200114423016.932.36$2,982
Nov 200114421618.072.41$3,122
Oct 200114421919.782.53$3,402
Sep 200114323124.262.25$3,989
Aug 200114026424.873.05$4,288
Jul 200114125923.933.20$4,202
Jun 200113126024.563.82$4,212
May 200119628325.524.31$6,221
Apr 200114827024.685.34$5,093
Mar 200115629024.545.38$5,387
Feb 200114124927.755.77$5,349
Jan 200115530327.478.40$6,803
Dec 200015128526.889.12$6,659
Nov 200016023132.215.66$6,461
Oct 200015823631.235.15$6,149
Sep 200014626831.875.19$6,043
Aug 200017427629.644.54$6,411
Jul 200016326528.534.09$5,734
Jun 200017524729.304.40$6,214
May 200017527327.263.68$5,775
Apr 200015925324.513.12$4,685
Mar 200016720628.422.86$5,335
Feb 200015521127.622.73$4,856
Jan 200016820225.272.48$4,746
Dec 199914822024.282.42$4,127
Nov 199915819823.192.43$4,146
Oct 199916422220.982.80$4,063
Sep 199915021021.752.62$3,812
Aug 199915524719.262.88$3,696
Jul 199914923017.892.37$3,211
Jun 199914419515.942.36$2,756
May 199915725315.792.32$3,066
Apr 199910521615.102.21$2,062
Mar 199913313512.471.84$1,907
Feb 19991341459.981.82$1,601
Jan 199915924510.381.90$2,116
Dec 19981511889.201.77$1,723
Nov 199816023610.892.19$2,258
Oct 199815619712.421.97$2,325
Sep 199815919112.592.08$2,400
Aug 199815020211.301.91$2,080
Jul 199816921411.742.24$2,463
Jun 199812121511.242.24$1,841
May 199816223512.622.21$2,563
Apr 199815222713.042.51$2,551
Mar 199816725812.802.31$2,733
Feb 199814221013.952.30$2,464
Jan 199816121214.702.15$2,824
Dec 199716225016.322.41$3,247
Nov 199716323918.193.09$3,703
Oct 199716521819.253.15$3,863
Sep 199717526117.742.95$3,876
Aug 199715144817.862.55$3,841
Jul 199718936517.582.25$4,143
Jun 199716238717.242.26$3,666
May 199718048518.972.31$4,534
Apr 199717642717.882.08$4,036
Mar 199717743918.951.94$4,205
Feb 199714938420.492.21$3,900
Jan 199715540823.483.54$5,084
Dec 199617142523.32$3,988
Nov 199615342021.97$3,361
Oct 199616445723.31$3,823
Sep 199617243822.22$3,822
Aug 199618249620.26$3,687
Jul 199615962419.55$3,108
Jun 199619166318.73$3,577
May 199621967219.43$4,255
Apr 19962061,09621.51$4,431
Mar 19962271,20219.38$4,399
Feb 199617335316.98$2,938
Jan 199622138717.07$3,772
Dec 199518431617.19$3,163
Nov 199517529516.00$2,800
Oct 199516929815.43$2,608
Sep 199519328916.18$3,123
Aug 199518728415.92$2,977
Jul 199518628715.24$2,835
Jun 199518427716.41$3,019
May 199514628117.56$2,564
Apr 199515427117.73$2,730
Mar 199513929916.44$2,285
Feb 19956026916.58$995
Jan 199514328515.92$2,277
Dec 199413857615.03$2,074
Nov 199418055015.90$2,862
Oct 199413546615.58$2,103
Sep 19948927315.29$1,361
Aug 199423631016.13$3,807
Jul 199422830417.56$4,004
Jun 199418928317.09$3,230
May 199420630415.88$3,271
Apr 199430024114.14$4,242
Mar 199423825512.46$2,965
Feb 199426322912.50$3,288
Jan 199436425912.66$4,608
Dec 199340326212.33$4,969
Nov 199320023914.49$2,898
Oct 199318324715.85$2,901
Sep 199322823815.03$3,427
Aug 199327424115.66$4,291
Jul 199320024815.46$3,092
Jun 199319325016.79$3,240
May 199319524717.68$3,448
Apr 199324825418.05$4,476
Mar 199325526618.14$4,626
Feb 199327423017.90$4,905
Jan 199343227716.93$7,314

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                   10 bbl  × $ 41.62 =       $416
Casinghead gas        96 Mcf  × $  2.92 =       $281

────────────────────────────────────────────────────
Month total                                     $697

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/5905 is the state's own key, not one this site invented.