PORTER-HOGAN UNIT

Lease 19728 · ROSCOMMON County, Michigan · Nellsville field · Det. River Richfield

OilWater1997–20262 wells

Operator (latest)

TALLMAN TRUST CO

Field

Nellsville

Formation

Det. River Richfield

Field type (as filed)

First production

1997

Last production

2026

Operators

2 runs on this lease, as filed month by month.

Operator	From	To
TALLMAN TRUST CO	Sep 2006	Jun 2026
DART OIL AND GAS CORP	Jan 1997	Aug 2006

Monthly oil production

354 months filed with the Michigan Department of Environment, Great Lakes, and Energy, Jan 1997 to Jun 2026. Volumes are bbl at lease level — a lease can cover many wells, so this is not a well's output.

Total over the months shown

33,500 bbl

Months filed

354

The Michigan Department of Environment, Great Lakes, and Energy records first production from this unit in 1996, and the monthly series below begins in Jan 1997. The total above covers the months shown, not the life of the unit.

Month	Oil (bbl)
Jun 2026	34
May 2026	60
Apr 2026	35
Mar 2026	30
Feb 2026	57
Jan 2026	61
Dec 2025	63
Nov 2025	41
Oct 2025	203
Sep 2025	219
Aug 2025	145
Jul 2025	125
Jun 2025	120
May 2025	66
Apr 2025	60
Mar 2025	61
Feb 2025	62
Jan 2025	132
Dec 2024	60
Nov 2024	25
Oct 2024	80
Sep 2024	78
Aug 2024	75
Jul 2024	76
Jun 2024	73
May 2024	95
Apr 2024	116
Mar 2024	138
Feb 2024	134
Jan 2024	126
Dec 2023	184
Nov 2023	187
Oct 2023	180
Sep 2023	185
Aug 2023	162
Jul 2023	65
Jun 2023	109
May 2023	105
Apr 2023	106
Mar 2023	104
Feb 2023	112
Jan 2023	35
Dec 2022	32
Nov 2022	30
Oct 2022	35
Sep 2022	40
Aug 2022	43
Jul 2022	49
Jun 2022	48
May 2022	45
Apr 2022	29
Mar 2022	32
Feb 2022	28
Jan 2022	29
Dec 2021	42
Nov 2021	53
Oct 2021	40
Sep 2021	34
Aug 2021	31
Jul 2021	0
Jun 2021	0
May 2021	0
Apr 2021	42
Mar 2021	50
Feb 2021	50
Jan 2021	47
Dec 2020	20
Nov 2020	30
Oct 2020	0
Sep 2020	0
Aug 2020	0
Jul 2020	0
Jun 2020	25
May 2020	30
Apr 2020	20
Mar 2020	20
Feb 2020	0
Jan 2020	0
Dec 2019	65
Nov 2019	54
Oct 2019	61
Sep 2019	56
Aug 2019	55
Jul 2019	60
Jun 2019	124
May 2019	175
Apr 2019	120
Mar 2019	120
Feb 2019	160
Jan 2019	120
Dec 2018	80
Nov 2018	65
Oct 2018	50
Sep 2018	60
Aug 2018	40
Jul 2018	72
Jun 2018	60
May 2018	40
Apr 2018	60
Mar 2018	157
Feb 2018	145
Jan 2018	174
Dec 2017	60
Nov 2017	62
Oct 2017	60
Sep 2017	55
Aug 2017	122
Jul 2017	124
Jun 2017	120
May 2017	134
Apr 2017	122
Mar 2017	113
Feb 2017	110
Jan 2017	106
Dec 2016	60
Nov 2016	60
Oct 2016	125
Sep 2016	150
Aug 2016	120
Jul 2016	125
Jun 2016	120
May 2016	120
Apr 2016	115
Mar 2016	120
Feb 2016	58
Jan 2016	60
Dec 2015	123
Nov 2015	120
Oct 2015	150
Sep 2015	134
Aug 2015	140
Jul 2015	148
Jun 2015	142
May 2015	160
Apr 2015	155
Mar 2015	30
Feb 2015	0
Jan 2015	0
Dec 2014	60
Nov 2014	72
Oct 2014	110
Sep 2014	120
Aug 2014	120
Jul 2014	120
Jun 2014	120
May 2014	103
Apr 2014	60
Mar 2014	80
Feb 2014	116
Jan 2014	120
Dec 2013	60
Nov 2013	80
Oct 2013	110
Sep 2013	120
Aug 2013	120
Jul 2013	140
Jun 2013	140
May 2013	135
Apr 2013	130
Mar 2013	120
Feb 2013	94
Jan 2013	60
Dec 2012	120
Nov 2012	120
Oct 2012	120
Sep 2012	95
Aug 2012	95
Jul 2012	95
Jun 2012	120
May 2012	120
Apr 2012	70
Mar 2012	70
Feb 2012	70
Jan 2012	70
Dec 2011	70
Nov 2011	64
Oct 2011	63
Sep 2011	65
Aug 2011	70
Jul 2011	87
Jun 2011	87
May 2011	85
Apr 2011	78
Mar 2011	75
Feb 2011	73
Jan 2011	70
Dec 2010	106
Nov 2010	106
Oct 2010	106
Sep 2010	106
Aug 2010	106
Jul 2010	106
Jun 2010	106
May 2010	106
Apr 2010	106
Mar 2010	106
Feb 2010	106
Jan 2010	106
Dec 2009	85
Nov 2009	85
Oct 2009	85
Sep 2009	80
Aug 2009	30
Jul 2009	80
Jun 2009	80
May 2009	85
Apr 2009	80
Mar 2009	85
Feb 2009	85
Jan 2009	172
Dec 2008	120
Nov 2008	120
Oct 2008	120
Sep 2008	90
Aug 2008	95
Jul 2008	95
Jun 2008	90
May 2008	110
Apr 2008	110
Mar 2008	100
Feb 2008	148
Jan 2008	160
Dec 2007	168
Nov 2007	168
Oct 2007	168
Sep 2007	168
Aug 2007	168
Jul 2007	168
Jun 2007	80
May 2007	110
Apr 2007	70
Mar 2007	95
Feb 2007	110
Jan 2007	70
Dec 2006	72
Nov 2006	70
Oct 2006	70
Sep 2006	70
Aug 2006	115
Jul 2006	129
Jun 2006	90
May 2006	63
Apr 2006	66
Mar 2006	110
Feb 2006	68
Jan 2006	107
Dec 2005	103
Nov 2005	140
Oct 2005	69
Sep 2005	92
Aug 2005	100
Jul 2005	106
Jun 2005	155
May 2005	68
Apr 2005	133
Mar 2005	119
Feb 2005	165
Jan 2005	164
Dec 2004	10
Nov 2004	40
Oct 2004	73
Sep 2004	128
Aug 2004	131
Jul 2004	100
Jun 2004	135
May 2004	173
Apr 2004	10
Mar 2004	70
Feb 2004	110
Jan 2004	99
Dec 2003	99
Nov 2003	125
Oct 2003	161
Sep 2003	76
Aug 2003	85
Jul 2003	82
Jun 2003	74
May 2003	77
Apr 2003	80
Mar 2003	102
Feb 2003	102
Jan 2003	80
Dec 2002	99
Nov 2002	100
Oct 2002	105
Sep 2002	124
Aug 2002	129
Jul 2002	131
Jun 2002	293
May 2002	92
Apr 2002	98
Mar 2002	96
Feb 2002	32
Jan 2002	89
Dec 2001	134
Nov 2001	70
Oct 2001	144
Sep 2001	85
Aug 2001	121
Jul 2001	146
Jun 2001	210
May 2001	65
Apr 2001	166
Mar 2001	115
Feb 2001	129
Jan 2001	233
Dec 2000	32
Nov 2000	101
Oct 2000	153
Sep 2000	146
Aug 2000	240
Jul 2000	28
Jun 2000	140
May 2000	86
Apr 2000	180
Mar 2000	138
Feb 2000	101
Jan 2000	63
Dec 1999	120
Nov 1999	153
Oct 1999	342
Sep 1999	103
Aug 1999	13
Jul 1999	32
Jun 1999	3
May 1999	7
Apr 1999	23
Mar 1999	15
Feb 1999	17
Jan 1999	28
Dec 1998	11
Nov 1998	111
Oct 1998	48
Sep 1998	160
Aug 1998	90
Jul 1998	114
Jun 1998	75
May 1998	107
Apr 1998	90
Mar 1998	103
Feb 1998	123
Jan 1998	115
Dec 1997	142
Nov 1997	138
Oct 1997	112
Sep 1997	128
Aug 1997	145
Jul 1997	152
Jun 1997	102
May 1997	116
Apr 1997	129
Mar 1997	121
Feb 1997	150
Jan 1997	161

Lease-level volumes as filed with the Michigan Department of Environment, Great Lakes, and Energy.

Monthly water production

Total over the months shown

61,143 bbl

Months filed

354

Month	Water (bbl)
Jun 2026	76
May 2026	95
Apr 2026	50
Mar 2026	5
Feb 2026	20
Jan 2026	28
Dec 2025	22
Nov 2025	24
Oct 2025	389
Sep 2025	405
Aug 2025	362
Jul 2025	294
Jun 2025	290
May 2025	168
Apr 2025	152
Mar 2025	158
Feb 2025	156
Jan 2025	334
Dec 2024	125
Nov 2024	48
Oct 2024	167
Sep 2024	158
Aug 2024	151
Jul 2024	156
Jun 2024	148
May 2024	192
Apr 2024	244
Mar 2024	331
Feb 2024	308
Jan 2024	284
Dec 2023	375
Nov 2023	393
Oct 2023	370
Sep 2023	375
Aug 2023	324
Jul 2023	225
Jun 2023	335
May 2023	315
Apr 2023	318
Mar 2023	308
Feb 2023	315
Jan 2023	122
Dec 2022	112
Nov 2022	105
Oct 2022	122
Sep 2022	140
Aug 2022	150
Jul 2022	172
Jun 2022	168
May 2022	157
Apr 2022	100
Mar 2022	106
Feb 2022	98
Jan 2022	105
Dec 2021	147
Nov 2021	183
Oct 2021	138
Sep 2021	120
Aug 2021	90
Jul 2021	0
Jun 2021	0
May 2021	0
Apr 2021	147
Mar 2021	166
Feb 2021	167
Jan 2021	165
Dec 2020	78
Nov 2020	110
Oct 2020	0
Sep 2020	0
Aug 2020	0
Jul 2020	0
Jun 2020	85
May 2020	92
Apr 2020	40
Mar 2020	37
Feb 2020	0
Jan 2020	0
Dec 2019	140
Nov 2019	135
Oct 2019	153
Sep 2019	140
Aug 2019	138
Jul 2019	150
Jun 2019	310
May 2019	438
Apr 2019	290
Mar 2019	295
Feb 2019	275
Jan 2019	300
Dec 2018	175
Nov 2018	145
Oct 2018	115
Sep 2018	140
Aug 2018	90
Jul 2018	155
Jun 2018	140
May 2018	95
Apr 2018	135
Mar 2018	330
Feb 2018	310
Jan 2018	355
Dec 2017	122
Nov 2017	125
Oct 2017	120
Sep 2017	120
Aug 2017	245
Jul 2017	255
Jun 2017	240
May 2017	270
Apr 2017	245
Mar 2017	230
Feb 2017	225
Jan 2017	220
Dec 2016	120
Nov 2016	120
Oct 2016	250
Sep 2016	300
Aug 2016	240
Jul 2016	250
Jun 2016	240
May 2016	235
Apr 2016	230
Mar 2016	240
Feb 2016	110
Jan 2016	120
Dec 2015	245
Nov 2015	240
Oct 2015	295
Sep 2015	260
Aug 2015	280
Jul 2015	285
Jun 2015	280
May 2015	300
Apr 2015	305
Mar 2015	58
Feb 2015	0
Jan 2015	0
Dec 2014	120
Nov 2014	150
Oct 2014	220
Sep 2014	230
Aug 2014	240
Jul 2014	240
Jun 2014	250
May 2014	200
Apr 2014	130
Mar 2014	150
Feb 2014	230
Jan 2014	240
Dec 2013	120
Nov 2013	150
Oct 2013	200
Sep 2013	210
Aug 2013	220
Jul 2013	260
Jun 2013	280
May 2013	260
Apr 2013	240
Mar 2013	200
Feb 2013	180
Jan 2013	120
Dec 2012	185
Nov 2012	190
Oct 2012	190
Sep 2012	160
Aug 2012	160
Jul 2012	160
Jun 2012	200
May 2012	220
Apr 2012	140
Mar 2012	135
Feb 2012	130
Jan 2012	140
Dec 2011	119
Nov 2011	107
Oct 2011	105
Sep 2011	109
Aug 2011	117
Jul 2011	145
Jun 2011	145
May 2011	142
Apr 2011	130
Mar 2011	125
Feb 2011	122
Jan 2011	117
Dec 2010	155
Nov 2010	135
Oct 2010	140
Sep 2010	150
Aug 2010	125
Jul 2010	125
Jun 2010	100
May 2010	150
Apr 2010	155
Mar 2010	200
Feb 2010	385
Jan 2010	300
Dec 2009	170
Nov 2009	180
Oct 2009	165
Sep 2009	160
Aug 2009	70
Jul 2009	150
Jun 2009	160
May 2009	165
Apr 2009	155
Mar 2009	170
Feb 2009	165
Jan 2009	280
Dec 2008	180
Nov 2008	180
Oct 2008	180
Sep 2008	145
Aug 2008	150
Jul 2008	150
Jun 2008	140
May 2008	160
Apr 2008	165
Mar 2008	150
Feb 2008	210
Jan 2008	220
Dec 2007	—
Nov 2007	—
Oct 2007	—
Sep 2007	—
Aug 2007	—
Jul 2007	—
Jun 2007	—
May 2007	—
Apr 2007	—
Mar 2007	—
Feb 2007	—
Jan 2007	—
Dec 2006	90
Nov 2006	90
Oct 2006	90
Sep 2006	90
Aug 2006	279
Jul 2006	327
Jun 2006	311
May 2006	61
Apr 2006	83
Mar 2006	183
Feb 2006	91
Jan 2006	163
Dec 2005	151
Nov 2005	234
Oct 2005	102
Sep 2005	132
Aug 2005	175
Jul 2005	227
Jun 2005	219
May 2005	112
Apr 2005	196
Mar 2005	190
Feb 2005	161
Jan 2005	238
Dec 2004	132
Nov 2004	149
Oct 2004	171
Sep 2004	229
Aug 2004	267
Jul 2004	237
Jun 2004	426
May 2004	231
Apr 2004	134
Mar 2004	131
Feb 2004	288
Jan 2004	161
Dec 2003	172
Nov 2003	421
Oct 2003	126
Sep 2003	79
Aug 2003	80
Jul 2003	68
Jun 2003	78
May 2003	88
Apr 2003	95
Mar 2003	151
Feb 2003	93
Jan 2003	16
Dec 2002	257
Nov 2002	310
Oct 2002	363
Sep 2002	150
Aug 2002	149
Jul 2002	199
Jun 2002	266
May 2002	121
Apr 2002	135
Mar 2002	226
Feb 2002	112
Jan 2002	154
Dec 2001	139
Nov 2001	135
Oct 2001	186
Sep 2001	183
Aug 2001	195
Jul 2001	289
Jun 2001	225
May 2001	271
Apr 2001	372
Mar 2001	182
Feb 2001	180
Jan 2001	246
Dec 2000	207
Nov 2000	291
Oct 2000	332
Sep 2000	533
Aug 2000	579
Jul 2000	121
Jun 2000	377
May 2000	111
Apr 2000	289
Mar 2000	109
Feb 2000	195
Jan 2000	114
Dec 1999	238
Nov 1999	92
Oct 1999	732
Sep 1999	118
Aug 1999	0
Jul 1999	0
Jun 1999	0
May 1999	0
Apr 1999	0
Mar 1999	1
Feb 1999	0
Jan 1999	0
Dec 1998	0
Nov 1998	33
Oct 1998	66
Sep 1998	70
Aug 1998	51
Jul 1998	107
Jun 1998	45
May 1998	71
Apr 1998	123
Mar 1998	100
Feb 1998	175
Jan 1998	82
Dec 1997	257
Nov 1997	161
Oct 1997	250
Sep 1997	176
Aug 1997	376
Jul 1997	441
Jun 1997	350
May 1997	530
Apr 1997	159
Mar 1997	97
Feb 1997	336
Jan 1997	328

Lease-level volumes as filed with the Michigan Department of Environment, Great Lakes, and Energy.

Wells on this lease

2 wells the state's well register assigns to this lease. Every one has a page. Michigan files the dates a well entered and left the unit, and a unit's members include injection, observation and dry holes — a member is not a producer.

Well	No.	Type	Operator	Status	In the unit
IDA HOLLISTER PORTER HOGAN	1-8	Oil Well	TALLMAN TRUST CO	Producing	Sep 1996 — still
IDA HOLLISTER PORTER HOGAN	1-17	Oil Well	TALLMAN TRUST CO	Producing	Sep 1996 — still

Michigan Department of Environment, Great Lakes, and Energy data, corpus built 2026-09-07. Lease 19728.