A downhole packer for providing a seal in a well bore to allow integrity testing of well bore with drill ahead capability immediately thereafter has a disengageable packer assembly wherein the packer element may be rendered disengageable by mounting the packer to the string using a tool body (61) provided with a sleeve (62) bearing a packer element (55), wherein the body is initially restrained from movement within the sleeve by engagement of an internal selectively movable retaining element(64). A method of testing a well bore with follow on drilling after disengaging the packer element is described.
申请公布号
WO2011117606(A3)
申请公布日期
2012.06.21
申请号
WO2011GB50506
申请日期
2011.03.15
申请人
M-I DRILLING FLUIDS U.K. LIMITED;LINKLATER, JAMES;TELFER, GEORGE