公开(公告)号：EP2271822A2

公开(公告)日：2011-01-12

申请号：EP09726962.5

申请日：2009-04-01

申请人： Statoil ASA

发明人： MATHIESEN, Vidar ,  AAKRE, Haavard

IPC分类号： E21B43/12 ,  E21B34/08 ,  E21B33/124

CPC分类号： E21B33/1243 ,  E21B34/08 ,  E21B43/08 ,  E21B43/12 ,  E21B43/14 ,  E21B43/32

摘要： A system for recompletion of an old well (24) in order to achieve an increased oil recovery from a reservoir (26), said system comprising a pipe (27) inserted into the old well (24), at least two constrictors or swell packers (29) being arranged along the length of the recompleted well (24, 27) and defining a well section between two successive constrictors or swell packers (29), said system further comprising at least one autonomous valve (2) arranged in said well section defined between said two successive swell packers or constrictors (29). Disclosed is also a method for recompletion of an old well (24) in order to achieve an increased oil recovery from a reservoir (26).

公开(公告)号：EP2245268B1

公开(公告)日：2012-04-18

申请号：EP08870295.6

申请日：2008-12-16

申请人： Statoil ASA

发明人： MATHIESEN, Vidar ,  AAKRE, Haavard

IPC分类号： E21B43/16 ,  G05D7/01

CPC分类号： E21B43/162 ,  E21B43/12 ,  G05D7/0146 ,  Y10T137/7913 ,  Y10T137/7914

摘要： A method for injecting a fluid into an oil and or gas reservoir or formation, in which the fluid flows into the reservoir or formation through a plurality of autonomous valves or flow control devices (2) provided along an injector (24), the valves (2) having a substantially constant flow-through volume above a given differential pressure for autonomously adjusting the flow of the fluid in order to ensure a substantially constant volume rate from the injector (24) to the reservoir or formation along an injector length.

公开(公告)号：EP2245268A1

公开(公告)日：2010-11-03

申请号：EP08870295.6

申请日：2008-12-16

申请人： Statoil ASA

发明人： MATHIESEN, Vidar ,  AAKRE, Haavard

IPC分类号： E21B43/16 ,  G05D7/01

CPC分类号： E21B43/162 ,  E21B43/12 ,  G05D7/0146 ,  Y10T137/7913 ,  Y10T137/7914

摘要： A method for injecting a fluid into an oil and or gas reservoir or formation, in which the fluid flows into the reservoir or formation through a plurality of autonomous valves or flow control devices (2) provided along an injector (24), the valves (2) having a substantially constant flow-through volume above a given differential pressure for autonomously adjusting the flow of the fluid in order to ensure a substantially constant volume rate from the injector (24) to the reservoir or formation along an injector length.