Smith International, Inc.

Robert R Olman

Mark J Murray

John M Yokley

James A Simson

Ronald J Selby

The liner assembly and method includes lowering a liner, liner hanger, liner hanger setting tool, liner packer, and liner packer setting tool into the borehole on a work string. The liner hanger is set either hydraulically or mechanically using the liner hanger setting tool at the option of the operator. The liner is then cemented within the borehole and the liner packer setting tool is used to set the liner packer either hydraulically or mechanically at the option of the operator. The liner packer setting tool includes an actuator assembly mounted on the exterior of a tubular body. The actuator assembly includes an actuator member having a contact member which engages the packing element on the liner packer such that upon movement of the contact member with respect to the liner packer, the packing element on the liner packer is compressed to sealingly engage the cased borehole. The actuator member is sealed from the fluid pressure within the borehole until the liner packer is to be set. The contact member may be actuated either mechanically or hydraulically or may be actuated hydraulically and mechanically.

Liner assembly and method

The liner packer assembly and method includes a liner packer having a tubular body with an aperture for the flow of wellbore fluids. A packing element is movably disposed on the tubular body between an open position on one side of the aperture for allowing wellbore fluids to flow through the aperture to a closed position on the other side of the aperture for closing flow through the aperture and for packing off the annulus between the packer and outer casing. During the cementing operation, drilling fluids and cement are allowed to flow through the annular area formed by the packer and outer casing and also flow through the aperture in the tubular body of the packer and up the inside diameter or inner annular area formed by the packer and inner tubular string. The inner and outer annular areas around packer approximately the flow area below the packer between the inner tubular string and the outer casing.

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Washington, LA, United States of America

Robert R Olman