Weatherford U.k. Limited

Weatherford Technology Holdings, LLC

Petrowell Limited

Philip C G Egleton

Stephen Reid

Alan Craigon

Andrew John Elrick

Santiago Galvez Porta

An anchoring apparatus for use in a wellbore, comprises at least one movable wall engaging member for engaging a wall of a wellbore, wherein the at least one movable wall engaging member is movable from a retracted position to an expanded position to engage the wall, and from the expanded position to a retracted position to disengage the wall. Provision of one or more wall engaging members being movable from an expanded position to a retracted position allows the anchoring apparatus to be retrieved from the wellbore, and in particular, from an open hole.

Downhole anchor

A flow restrictor for restricting flow in an annulus, the flow restrictor comprising a body and a restrictor assembly mounted on the body, wherein the restrictor assembly is actuatable between a run-in configuration and a set configuration in which at least a portion of the restrictor assembly is radially splayed to thereby substantially restrict flow in the annulus, and wherein the flow restrictor is actuatable by fluid flow over the restrictor assembly above a threshold flow rate to actuate the restrictor assembly from the run-in configuration to the set configuration.

Flow restrictor

An anchoring apparatus () for use in a wellbore, comprises at least one movable wall engaging member () for engaging a wall of a wellbore, wherein the at least one movable wall engaging member () is movable from a retracted position to an expanded position to engage the wall, and from the expanded position to a retracted position to disengage the wall. Provision of one or more wall engaging members () being movable from an expanded position to a retracted position allows the anchoring apparatus to be retrieved from the wellbore, and in particular, from an open hole.

An activation apparatus () for activating a downhole tool comprising a top sub (), a bottom sub (), an outer sleeve () having a port () and an inner sleeve () having a port (). The apparatus () is configurable between a run-in configuration in which the ports () are not aligned and an activated configuration in which the ports () are aligned and permit lateral passage of fluid through the apparatus (), the activation apparatus () being configured such that application of at least two forces to the activation apparatus () transitions the activation apparatus () from the run-in configuration to the activated configuration.

Growing community of inventors

Newmachar, United Kingdom

Philip C G Egleton