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PRACTICAL RESERVOIR PERFORMANCE
ANALYSIS & REVIEW USING OFM
Joe Sinner Legacy Reserves Operating, LP
2011 Wyoming IOR/EOR Conference Jackson, WY
September 12-13, 2011
WHAT IS OFM??
Oil Field Manager
Licensed software from Schlumberger
Primary functions:
Reservoir surveillance
Production surveillance
Production forecasting
WHAT IS OFM??
Database Interface (MS Access)
Additional functions:
Log displays & cross sections
Wellbore diagrams
PRODUCTION/INJECTION SURVEILLANCE
Production plots
Hall plots
RESERVOIR SURVEILLANCE
Identify aquifer influx mechanism/direction
Identify dominant fluid flow direction/
well-to-well communication
AQUIFER INFLUX MECHANISM/DIRECTION
Example 1 Fourbear
AQUIFER INFLUX MECHANISM/DIRECTION Date:1/1/1958
Fourbear Structure Unit
FB 2
FB 3
FB 5
FB 6
FB 7FB 8
FB 9
FB 10
FB 11
FB 12
FB 13
FB 14
FB 15
FB 16
FB 17
FB 18
FB 19
FB 20
FB 21
FB 22
FB 23
FB 24
FB 25
FB 26
FB 27
FB 28
FB 29
FB 30
FB 31
FB 32
FB 34
FB 35
FB 36
FB 37
FB 38
FB 39
FB 42
FB 43
FB 44
FB 45
FB 47
FB 48
FB 51
FB 52
FB 53
FB 56
FB 57
FB 58
FB 59
FB 61
FB 62
FB 63
FB 64
FB 65
FB 66
FB 67
FB 69
FB 70
FB 72
FB 73
FB 75
FB 77
FB 81
FB 82
FB 84
FB 86
FB 85
FB 41
FB 71
FB 74
Oil Cut ( % )
Water Cut ( % )
Example 1 Fourbear
AQUIFER INFLUX MECHANISM/DIRECTION Date:1/1/1960
Fourbear Structure Unit
FB 2
FB 3
FB 5
FB 6
FB 7FB 8
FB 9
FB 10
FB 11
FB 12
FB 13
FB 14
FB 15
FB 16
FB 17
FB 18
FB 19
FB 20
FB 21
FB 22
FB 23
FB 24
FB 25
FB 26
FB 27
FB 28
FB 29
FB 30
FB 31
FB 32
FB 34
FB 35
FB 36
FB 37
FB 38
FB 39
FB 42
FB 43
FB 44
FB 45
FB 47
FB 48
FB 51
FB 52
FB 53
FB 56
FB 57
FB 58
FB 59
FB 61
FB 62
FB 63
FB 64
FB 65
FB 66
FB 67
FB 69
FB 70
FB 72
FB 73
FB 75
FB 77
FB 81
FB 82
FB 84
FB 86
FB 85
FB 41
FB 71
FB 74
Oil Cut ( % )
Water Cut ( % )
Example 1 Fourbear
AQUIFER INFLUX MECHANISM/DIRECTION Date:1/1/1962
Fourbear Structure Unit
FB 2
FB 3
FB 5
FB 6
FB 7FB 8
FB 9
FB 10
FB 11
FB 12
FB 13
FB 14
FB 15
FB 16
FB 17
FB 18
FB 19
FB 20
FB 21
FB 22
FB 23
FB 24
FB 25
FB 26
FB 27
FB 28
FB 29
FB 30
FB 31
FB 32
FB 34
FB 35
FB 36
FB 37
FB 38
FB 39
FB 42
FB 43
FB 44
FB 45
FB 47
FB 48
FB 51
FB 52
FB 53
FB 56
FB 57
FB 58
FB 59
FB 61
FB 62
FB 63
FB 64
FB 65
FB 66
FB 67
FB 69
FB 70
FB 72
FB 73
FB 75
FB 77
FB 81
FB 82
FB 84
FB 86
FB 85
FB 41
FB 71
FB 74
Oil Cut ( % )
Water Cut ( % )
Example 1 Fourbear
AQUIFER INFLUX MECHANISM/DIRECTION
Example 1 Fourbear
Date:1/1/1967
Fourbear Structure Unit
FB 2
FB 3
FB 5
FB 6
FB 7FB 8
FB 9
FB 10
FB 11
FB 12
FB 13
FB 14
FB 15
FB 16
FB 17
FB 18
FB 19
FB 20
FB 21
FB 22
FB 23
FB 24
FB 25
FB 26
FB 27
FB 28
FB 29
FB 30
FB 31
FB 32
FB 34
FB 35
FB 36
FB 37
FB 38
FB 39
FB 42
FB 43
FB 44
FB 45
FB 47
FB 48
FB 51
FB 52
FB 53
FB 56
FB 57
FB 58
FB 59
FB 61
FB 62
FB 63
FB 64
FB 65
FB 66
FB 67
FB 69
FB 70
FB 72
FB 73
FB 75
FB 77
FB 81
FB 82
FB 84
FB 86
FB 85
FB 41
FB 71
FB 74
Oil Cut ( % )
Water Cut ( % )
AQUIFER INFLUX MECHANISM/DIRECTION
Example 2 Quealy Dome
(Dakota)
AQUIFER INFLUX MECHANISM/DIRECTION
Example 2 Quealy Dome
(Dakota)
Date:1/1/1942
Holst 01
Holst 10
Holst 11
Holst 12
Holst 13
Holst 15
Holst 02
Holst 04
Holst 05
Holst 06
Holst 07
Holst 08
Holst 09
Holst Woolf 1
Wilson 01
Wilson 03
Wilson 04
Wilson 02
Oil Cut ( % )
Water Cut ( % )
AQUIFER INFLUX MECHANISM/DIRECTION
Example 2 Quealy Dome
(Dakota)
Date:1/1/1944
Holst 01
Holst 10
Holst 11
Holst 12
Holst 13
Holst 15
Holst 02
Holst 04
Holst 05
Holst 06
Holst 07
Holst 08
Holst 09
Holst Woolf 1
Wilson 01
Wilson 03
Wilson 04
Wilson 02
Oil Cut ( % )
Water Cut ( % )
AQUIFER INFLUX MECHANISM/DIRECTION
Example 2 Quealy Dome
(Dakota)
Date:1/1/1948
Holst 01
Holst 10
Holst 11
Holst 12
Holst 13
Holst 15
Holst 02
Holst 04
Holst 05
Holst 06
Holst 07
Holst 08
Holst 09
Holst Woolf 1
Wilson 01
Wilson 03
Wilson 04
Wilson 02
Oil Cut ( % )
Water Cut ( % )
AQUIFER INFLUX MECHANISM/DIRECTION
Example 2 Quealy Dome
(Dakota)
Date:1/1/1953
Holst 01
Holst 10
Holst 11
Holst 12
Holst 13
Holst 15
Holst 02
Holst 04
Holst 05
Holst 06
Holst 07
Holst 08
Holst 09
Holst Woolf 1
Wilson 01
Wilson 03
Wilson 04
Wilson 02
Oil Cut ( % )
Water Cut ( % )
AQUIFER INFLUX MECHANISM/DIRECTION
Example 2 Quealy Dome
(Dakota)
Date:1/1/1969
Holst 01
Holst 10
Holst 11
Holst 12
Holst 13
Holst 15
Holst 02
Holst 04
Holst 05
Holst 06
Holst 07
Holst 08
Holst 09
Holst Woolf 1
Wilson 01
Wilson 03
Wilson 04
Wilson 02
Oil Cut ( % )
Water Cut ( % )
DOMINANT FLUID FLOW DIRECTION
Example 3 Kirby Creek Waterflood
DOMINANT FLUID FLOW DIRECTION
Date:10/1/1968
Kirby Creek Unit
1220
60
1
0
0
0
0
0
KC 11
KC 13
KC 8
KC 9
KC 1
KC 10
KC 12
KC 14
KC 15
KC 16
KC 17
KC 18
KC 19
KC 2
KC 20
KC 21
KC 22
KC 23
KC 24
KC 25
KC 26
KC 27
KC 28
KC 29
KC 4
KC 5
KC 6
KC 7
KC 3
Water Rate (Cal Day ) ( bbl/d )
W. Inj Rate (Cal Day ) ( bbl/d )
Just Prior to Unitization Example 3 Kirby Creek Waterflood
Bubble Map
of Water Rates (Inj & Prod)
Date:10/1/1972
Kirby Creek Unit
0726
1680
15
0
9
0
00
KC 11
KC 13
KC 8
KC 9
KC 1
KC 10
KC 12
KC 14
KC 15
KC 16
KC 17
KC 18
KC 19
KC 2
KC 20
KC 21
KC 22
KC 23
KC 24
KC 25
KC 26
KC 27
KC 28
KC 29
KC 4
KC 5
KC 6
KC 7
KC 3
Water Rate (Cal Day ) ( bbl/d )
W. Inj Rate (Cal Day ) ( bbl/d )
DOMINANT FLUID FLOW DIRECTION
4 Yrs After Unitization Example 3 Kirby Creek Waterflood
Bubble Map
of Water Rates (Inj & Prod)
Date:12/1/1981
Kirby Creek Unit
0669
2460
76
0
26
0
50
KC 11
KC 13
KC 8
KC 9
KC 1
KC 10
KC 12
KC 14
KC 15
KC 16
KC 17
KC 18
KC 19
KC 2
KC 20
KC 21
KC 22
KC 23
KC 24
KC 25
KC 26
KC 27
KC 28
KC 29
KC 4
KC 5
KC 6
KC 7
KC 3
Water Rate (Cal Day ) ( bbl/d )
W. Inj Rate (Cal Day ) ( bbl/d )
DOMINANT FLUID FLOW DIRECTION
13 Yrs After Unitization Example 3 Kirby Creek Waterflood
Bubble Map
of Water Rates (Inj & Prod)
Date:10/1/1992
Kirby Creek Unit
0524
0332
111
0
240
21
0
17
0
160
60
0
00
0
KC 11
KC 13
KC 8
KC 9
KC 1
KC 10
KC 12
KC 14
KC 15
KC 16
KC 17
KC 18
KC 19
KC 2
KC 20
KC 21
KC 22
KC 23
KC 24
KC 25
KC 26
KC 27
KC 28
KC 29
KC 4
KC 5
KC 6
KC 7
KC 3
Water Rate (Cal Day ) ( bbl/d )
W. Inj Rate (Cal Day ) ( bbl/d )
DOMINANT FLUID FLOW DIRECTION