公开(公告)号：WO1993013293A1

公开(公告)日：1993-07-08

申请号：PCT/US1992008858

申请日：1992-10-15

Applicant: MARATHON OIL COMPANY

Inventor： MARATHON OIL COMPANY ,  SNIDER, Philip, M. ,  DIETRICH, Michael, J. ,  BERZIN, Vel

IPC: E21B33/127

CPC classification number: E21B23/006 ,  E21B33/1246 ,  E21B33/1272 ,  E21B33/1291 ,  E21B43/04

Abstract: An inflatable packer assembly for use in a subterranean well bore to isolate an interval of the well bore and/or adjacent subterranean formation for treatment. The assembly comprises a hanger assembly (100), a fluid piston assembly (20) and at least one inflatable packer (120). As constructed and positioned in the well bore, the hanger assembly and fluid piston assembly are sufficiently distant from the interval to be treated to inhibit being stuck in the well bore. By lowering and raising the tubing or drill string from which the inflatable packer assembly is suspended, the fluid piston assembly pumps well bore fluid into and from the packer to respectively inflate and deflate the packer. In this manner, the packer can be repeatedly inflated, deflated and repositioned within a well bore to treat successive intervals of the well bore.