IMPROVING RESERVOIR COMMUNICATION WITH A WELLBORE

摘要

A method and apparatus for improving reservoir communication includes, in on e arrangement, use of one or more chambers (114, 124) to create an underbalanc e condition or fluid surge in the wellbore. In other arrangements the underbalance conditions are created through the use of a packer (310), circulating valve (307), and atmospheric chamber (304); a subsea blowout preventer (402), a choke line (412), and a kill line (414); through the use of a perforating gun (402); and through the use of an arrangement including a tool string, closure member, chamber (10), and ports (16), with a tool (30) adapted to perform in a low pressure condition in the tool string.