American Oil and Gas Reporter - June 2012 - 142

TABLE 1 Early-Stage Production Comparison
PI bbl/d/ psi 7 14 21 Conventional Design Orifice @ 6,770 ft
Oil bbl/d Gas lift MMcf/d

Single Orifice @ 4,190 ft
Oil bbl/d Gas lift MMcf/d Oil bbl/d

Intelligent Gas Lift

Gas lift MMcf/d

Injection depth

2,865 4,625 5,895

2.0 2.0 2.0

2,360 4,060 5,330

2.0 2.0 2.0

3,125 4,650 5,920

2.0 2.0 2.0

10,555 6,970 6,970

TABLE 2 Midlife Stage Production Comparison (Water Injection Support and Higher Casinghead Pressure)
PI bbl/d/ psi 7 14 21 Conventional Design Orifice @ 6,770 ft
Oil bbl/d Gas lift MMcf/d

Single Orifice @ 4,190 ft
Oil bbl/d Gas lift MMcf/d Oil bbl/d

Intelligent Gas Lift

Gas lift MMcf/d

Injection depth

2,165 3,455 4,360

2.0 2.0 2.0

1,550 2,715 3,575

2.0 2.0 2.0

3,005 4,245 5,240

3.0 3.0 3.0

15,615 10,555 10,555

TABLE 3 Mid-Life Stage Production Comparison (No Water Injection Support)
PI bbl/d/ psi 7 14 21 Conventional Design Orifice @ 6,770 ft
Oil bbl/d Gas lift MMcf/d

Single Orifice @ 4,190 ft
Oil bbl/d Gas lift MMcf/d Oil bbl/d

Intelligent Gas Lift

Gas lift MMcf/d

Injection depth

750 1,205 1,500

2.0 2.0 2.0

-

2.0 2.0 2.0

1,570 2,210 2,595

2.0 2.0 2.0

15,615 15,615 15,615

results were revealing. The analysis used an example subsea well in moderate water depths, drilled to a total depth of 17,600 feet measured depth with a 41⁄2- x 51⁄2-inch production tubing string inside a 7-inch liner and 95⁄8-inch production casing. The key variables examined were the well productivity index, reservoir pressure and water cut. Each of these parameters was anticipated to change over the lifetime of the well. A number of well life scenarios were generated. These were between one day and three months with high and dropping to moderate pressures and no water cut; midlife at one year with water injection for reservoir pressure maintenance and low water cut; and later life at three years where the reservoir is repressured and the water cut is higher (a scenario likely to be common in many Gulf of Mexico fields). Using these potential “life of well” scenarios, the test compared the performance of a standard, gas lift design with multiple mandrels with digital artificial lift technology to identify the maximum practically achievable production rates along with the maximum practically achievable gas injection rates. In every scenario, the results indicated that a digital

system could adapt to the different conditions to ensure well stability and deliver increased recovery rates. The analysis found that the two scenarios deriving most benefit from gas lift were at the early-life stage after three months and the midlife stage with water injection support. Table 1 shows the daily oil production comparisons at the threemonth life cycle stage for three potential productivity index values, with digital gas lift technology already showing increased oil production, compared with conventional designs. The midlife stage is particularly important, as reservoir pressure has fallen to an extent where it cannot support natural production. Table 2 shows improved daily oil production with digital gas lift, which also can set higher injection rates at 3 million cubic feet a day with higher casinghead pressure as well. Furthermore, even without water injection support, the oil production generated through digital technology is significantly higher than the alternatives (Table 3). The ability to open and close the digital units at will and to vary the equivalent port size means that even greater production increments could be delivered

in the scenarios where additional casing pressure or additional gas lift gas become available. In the midlife cycle stage scenario with a gas injection rate of 3 MMcf/d in Table 2, for example, intelligent gas lift continued to deliver greater incremental production. The conventional solution would have required a wireline intervention to increase the port size. When the study assessed the intelligent gas lift units under these life cycle well scenarios and compared the results against single-point injection gas lift solutions, intelligent gas lift’s ability to move injection depths up and down in the well in response to changes in production characteristics, such as reservoir pressure and water cut, was seen to yield increased production. At times, this incremental oil production was more than 1,000 bbl/d, and in one scenario, represented up to 110 percent more production. In order to make this comparative modeling exercise practical in a multivariable scenario, some simplifying assumptions were made, such as the selection of 2.0 MMcf/d as the allocated gas injection rate (with the exception of the midlife scenario). This does not enable a full appreciation of the potential of intelligent gas lift, which provides the option of changing the effective port size by selectively opening a number of valves in an individual unit. With higher casinghead pressure and gas injection rates, this technology can deliver even greater incremental production, and without any well interventions. r

IAN ANDERSON

Ian Anderson is chief operating officer of Camcon Oil, developer of intelligent gas lift technology. With responsibility for the day-to-day operational management of Camcon, Anderson has extensive experience in general management, specifically developing business and market strategies for technology companies. Previous positions include business unit director at Unisys and marketing director at ISGI Systems, a Siemens company, which supplied software solutions to the media, publishing and information technology sectors.

142 THE AMERICAN OIL & GAS REPORTER



Table of Contents for the Digital Edition of American Oil and Gas Reporter - June 2012

American Oil and Gas Reporter - June 2012
Contents
Reports
Calendar
Oil & Gas Counts
State Legislative
Industry Digest
Natural Gas NSPS Affects a Variety of Equipment
Federal Legislation
SPCC
EPA
Keystone XL
Tech Connections
Washington Watch
Anadarko Finds World-Class Reservoirs in Deepwater Mozambique
Variety of Projects Have Permian Basin Hopping
Infrastructure Bottlenecks Easing in Permian Region
Completion Design Optimizes Yeso-San Andres Oil Wells
Cover Story
Beaver Creek CO2 Flood Boosts Madison Production
Study Evaluates Low-Salinity Waterfloods
Variable Speed Drives Coming of Age
Activity Spurring Artificial Lift Innovations
Project Shows STMZ’s Viability for Lower Tertiary Completions
ICDs, Modeling Improve Horizontal Shelf Well Completion
Intelligent Gas Lift Maximizes Production, Recovery
KOGA
CIPA
TOGA
TAEP
Frac Rules
Marcellus Regs
Conventions
The American Well Servicing Directory, Summer 2012
Industry Focus
Classified Advertising
Advertisers Index
American Oil and Gas Reporter - June 2012 - American Oil and Gas Reporter - June 2012
American Oil and Gas Reporter - June 2012 - Cover2
American Oil and Gas Reporter - June 2012 - Contents
American Oil and Gas Reporter - June 2012 - Reports
American Oil and Gas Reporter - June 2012 - 5
American Oil and Gas Reporter - June 2012 - 6
American Oil and Gas Reporter - June 2012 - 7
American Oil and Gas Reporter - June 2012 - Calendar
American Oil and Gas Reporter - June 2012 - 9
American Oil and Gas Reporter - June 2012 - 10
American Oil and Gas Reporter - June 2012 - 11
American Oil and Gas Reporter - June 2012 - 12
American Oil and Gas Reporter - June 2012 - 13
American Oil and Gas Reporter - June 2012 - Oil & Gas Counts
American Oil and Gas Reporter - June 2012 - 15
American Oil and Gas Reporter - June 2012 - Industry Digest
American Oil and Gas Reporter - June 2012 - 17
American Oil and Gas Reporter - June 2012 - 18
American Oil and Gas Reporter - June 2012 - 19
American Oil and Gas Reporter - June 2012 - 20
American Oil and Gas Reporter - June 2012 - 21
American Oil and Gas Reporter - June 2012 - 22
American Oil and Gas Reporter - June 2012 - 23
American Oil and Gas Reporter - June 2012 - Natural Gas NSPS Affects a Variety of Equipment
American Oil and Gas Reporter - June 2012 - 25
American Oil and Gas Reporter - June 2012 - 26
American Oil and Gas Reporter - June 2012 - 27
American Oil and Gas Reporter - June 2012 - Federal Legislation
American Oil and Gas Reporter - June 2012 - 29
American Oil and Gas Reporter - June 2012 - 30
American Oil and Gas Reporter - June 2012 - 31
American Oil and Gas Reporter - June 2012 - SPCC
American Oil and Gas Reporter - June 2012 - 33
American Oil and Gas Reporter - June 2012 - Keystone XL
American Oil and Gas Reporter - June 2012 - 35
American Oil and Gas Reporter - June 2012 - 36
American Oil and Gas Reporter - June 2012 - Tech Connections
American Oil and Gas Reporter - June 2012 - 38
American Oil and Gas Reporter - June 2012 - Washington Watch
American Oil and Gas Reporter - June 2012 - Anadarko Finds World-Class Reservoirs in Deepwater Mozambique
American Oil and Gas Reporter - June 2012 - 41
American Oil and Gas Reporter - June 2012 - 42
American Oil and Gas Reporter - June 2012 - 43
American Oil and Gas Reporter - June 2012 - 44
American Oil and Gas Reporter - June 2012 - 45
American Oil and Gas Reporter - June 2012 - 46
American Oil and Gas Reporter - June 2012 - 47
American Oil and Gas Reporter - June 2012 - 48
American Oil and Gas Reporter - June 2012 - 49
American Oil and Gas Reporter - June 2012 - Variety of Projects Have Permian Basin Hopping
American Oil and Gas Reporter - June 2012 - 51
American Oil and Gas Reporter - June 2012 - 52
American Oil and Gas Reporter - June 2012 - 53
American Oil and Gas Reporter - June 2012 - 54
American Oil and Gas Reporter - June 2012 - 55
American Oil and Gas Reporter - June 2012 - 56
American Oil and Gas Reporter - June 2012 - 57
American Oil and Gas Reporter - June 2012 - 58
American Oil and Gas Reporter - June 2012 - 59
American Oil and Gas Reporter - June 2012 - 60
American Oil and Gas Reporter - June 2012 - 61
American Oil and Gas Reporter - June 2012 - 62
American Oil and Gas Reporter - June 2012 - 63
American Oil and Gas Reporter - June 2012 - Infrastructure Bottlenecks Easing in Permian Region
American Oil and Gas Reporter - June 2012 - 65
American Oil and Gas Reporter - June 2012 - 66
American Oil and Gas Reporter - June 2012 - 67
American Oil and Gas Reporter - June 2012 - 68
American Oil and Gas Reporter - June 2012 - 69
American Oil and Gas Reporter - June 2012 - 70
American Oil and Gas Reporter - June 2012 - 71
American Oil and Gas Reporter - June 2012 - Completion Design Optimizes Yeso-San Andres Oil Wells
American Oil and Gas Reporter - June 2012 - 73
American Oil and Gas Reporter - June 2012 - 74
American Oil and Gas Reporter - June 2012 - 75
American Oil and Gas Reporter - June 2012 - 76
American Oil and Gas Reporter - June 2012 - 77
American Oil and Gas Reporter - June 2012 - 78
American Oil and Gas Reporter - June 2012 - 79
American Oil and Gas Reporter - June 2012 - 80
American Oil and Gas Reporter - June 2012 - 81
American Oil and Gas Reporter - June 2012 - Cover Story
American Oil and Gas Reporter - June 2012 - 83
American Oil and Gas Reporter - June 2012 - 84
American Oil and Gas Reporter - June 2012 - 85
American Oil and Gas Reporter - June 2012 - 86
American Oil and Gas Reporter - June 2012 - 87
American Oil and Gas Reporter - June 2012 - 88
American Oil and Gas Reporter - June 2012 - 89
American Oil and Gas Reporter - June 2012 - 90
American Oil and Gas Reporter - June 2012 - 91
American Oil and Gas Reporter - June 2012 - Beaver Creek CO2 Flood Boosts Madison Production
American Oil and Gas Reporter - June 2012 - 93
American Oil and Gas Reporter - June 2012 - 94
American Oil and Gas Reporter - June 2012 - 95
American Oil and Gas Reporter - June 2012 - 96
American Oil and Gas Reporter - June 2012 - 97
American Oil and Gas Reporter - June 2012 - 98
American Oil and Gas Reporter - June 2012 - 99
American Oil and Gas Reporter - June 2012 - Study Evaluates Low-Salinity Waterfloods
American Oil and Gas Reporter - June 2012 - 101
American Oil and Gas Reporter - June 2012 - 102
American Oil and Gas Reporter - June 2012 - 103
American Oil and Gas Reporter - June 2012 - Variable Speed Drives Coming of Age
American Oil and Gas Reporter - June 2012 - 105
American Oil and Gas Reporter - June 2012 - 106
American Oil and Gas Reporter - June 2012 - 107
American Oil and Gas Reporter - June 2012 - Activity Spurring Artificial Lift Innovations
American Oil and Gas Reporter - June 2012 - 109
American Oil and Gas Reporter - June 2012 - 110
American Oil and Gas Reporter - June 2012 - 111
American Oil and Gas Reporter - June 2012 - 112
American Oil and Gas Reporter - June 2012 - 113
American Oil and Gas Reporter - June 2012 - 114
American Oil and Gas Reporter - June 2012 - 115
American Oil and Gas Reporter - June 2012 - 116
American Oil and Gas Reporter - June 2012 - 117
American Oil and Gas Reporter - June 2012 - Project Shows STMZ’s Viability for Lower Tertiary Completions
American Oil and Gas Reporter - June 2012 - 119
American Oil and Gas Reporter - June 2012 - 120
American Oil and Gas Reporter - June 2012 - 121
American Oil and Gas Reporter - June 2012 - 122
American Oil and Gas Reporter - June 2012 - 123
American Oil and Gas Reporter - June 2012 - 124
American Oil and Gas Reporter - June 2012 - 125
American Oil and Gas Reporter - June 2012 - 126
American Oil and Gas Reporter - June 2012 - 127
American Oil and Gas Reporter - June 2012 - 128
American Oil and Gas Reporter - June 2012 - 129
American Oil and Gas Reporter - June 2012 - 130
American Oil and Gas Reporter - June 2012 - ICDs, Modeling Improve Horizontal Shelf Well Completion
American Oil and Gas Reporter - June 2012 - 132
American Oil and Gas Reporter - June 2012 - 133
American Oil and Gas Reporter - June 2012 - 134
American Oil and Gas Reporter - June 2012 - 135
American Oil and Gas Reporter - June 2012 - 136
American Oil and Gas Reporter - June 2012 - 137
American Oil and Gas Reporter - June 2012 - 138
American Oil and Gas Reporter - June 2012 - 139
American Oil and Gas Reporter - June 2012 - 140
American Oil and Gas Reporter - June 2012 - Intelligent Gas Lift Maximizes Production, Recovery
American Oil and Gas Reporter - June 2012 - 142
American Oil and Gas Reporter - June 2012 - 143
American Oil and Gas Reporter - June 2012 - 144
American Oil and Gas Reporter - June 2012 - 145
American Oil and Gas Reporter - June 2012 - 146
American Oil and Gas Reporter - June 2012 - 147
American Oil and Gas Reporter - June 2012 - 148
American Oil and Gas Reporter - June 2012 - KOGA
American Oil and Gas Reporter - June 2012 - 150
American Oil and Gas Reporter - June 2012 - 151
American Oil and Gas Reporter - June 2012 - CIPA
American Oil and Gas Reporter - June 2012 - 153
American Oil and Gas Reporter - June 2012 - 154
American Oil and Gas Reporter - June 2012 - 155
American Oil and Gas Reporter - June 2012 - TOGA
American Oil and Gas Reporter - June 2012 - 157
American Oil and Gas Reporter - June 2012 - 158
American Oil and Gas Reporter - June 2012 - 159
American Oil and Gas Reporter - June 2012 - 160
American Oil and Gas Reporter - June 2012 - 161
American Oil and Gas Reporter - June 2012 - 162
American Oil and Gas Reporter - June 2012 - 163
American Oil and Gas Reporter - June 2012 - TAEP
American Oil and Gas Reporter - June 2012 - 165
American Oil and Gas Reporter - June 2012 - 166
American Oil and Gas Reporter - June 2012 - 167
American Oil and Gas Reporter - June 2012 - 168
American Oil and Gas Reporter - June 2012 - 169
American Oil and Gas Reporter - June 2012 - 170
American Oil and Gas Reporter - June 2012 - Frac Rules
American Oil and Gas Reporter - June 2012 - Marcellus Regs
American Oil and Gas Reporter - June 2012 - 173
American Oil and Gas Reporter - June 2012 - Conventions
American Oil and Gas Reporter - June 2012 - The American Well Servicing Directory, Summer 2012
American Oil and Gas Reporter - June 2012 - 176
American Oil and Gas Reporter - June 2012 - 177
American Oil and Gas Reporter - June 2012 - 178
American Oil and Gas Reporter - June 2012 - 179
American Oil and Gas Reporter - June 2012 - 180
American Oil and Gas Reporter - June 2012 - 181
American Oil and Gas Reporter - June 2012 - 182
American Oil and Gas Reporter - June 2012 - 183
American Oil and Gas Reporter - June 2012 - 184
American Oil and Gas Reporter - June 2012 - 185
American Oil and Gas Reporter - June 2012 - 186
American Oil and Gas Reporter - June 2012 - 187
American Oil and Gas Reporter - June 2012 - 188
American Oil and Gas Reporter - June 2012 - 189
American Oil and Gas Reporter - June 2012 - 190
American Oil and Gas Reporter - June 2012 - 191
American Oil and Gas Reporter - June 2012 - 192
American Oil and Gas Reporter - June 2012 - 193
American Oil and Gas Reporter - June 2012 - 194
American Oil and Gas Reporter - June 2012 - 195
American Oil and Gas Reporter - June 2012 - 196
American Oil and Gas Reporter - June 2012 - 197
American Oil and Gas Reporter - June 2012 - 198
American Oil and Gas Reporter - June 2012 - 199
American Oil and Gas Reporter - June 2012 - 200
American Oil and Gas Reporter - June 2012 - 201
American Oil and Gas Reporter - June 2012 - 202
American Oil and Gas Reporter - June 2012 - Industry Focus
American Oil and Gas Reporter - June 2012 - 204
American Oil and Gas Reporter - June 2012 - 205
American Oil and Gas Reporter - June 2012 - 206
American Oil and Gas Reporter - June 2012 - 207
American Oil and Gas Reporter - June 2012 - 208
American Oil and Gas Reporter - June 2012 - Classified Advertising
American Oil and Gas Reporter - June 2012 - Advertisers Index
American Oil and Gas Reporter - June 2012 - Cover3
American Oil and Gas Reporter - June 2012 - Cover4
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