Petrowell Limited

Steve Reid

Iain Morrison Macleod

Iain McLeod

A packer for a well is described. The packer comprises at least one packing element, at least one anchoring element, and a mandrel coupled to the at least one anchoring element. The packer is arranged such that, once set, the mandrel is free to move with respect to the packing and anchoring elements. In one embodiment the at least one anchoring element is integral with the at least one packing element. In an alternative embodiment the at least one anchoring element is separate from the at least one packing element.

Packer

A centraliser () for centralising a tubular () within a conduit is described. The centraliser comprises a centraliser body, at least one finger () pivotally mounted to the body and at least one collar (), the/each collar being moveable with respect to the at least one finger. Relative movement between the/each collar and the body pivots the at least one finger from a run-in configuration to an extended configuration.

Centraliser

A device for activating a downhole tool is described. The device comprises a first elongate member defining a toothed surface portion, a second elongate member defining a toothed surface portion and at least one pinion arrangement The/each pinion arrangement engages the toothed surface portions of the first and second members such that movement of one member in a first direction results in movement of the other member in a second direction, opposite the first direction.

Activation device

A formation engaging member for use in an open hole anchor () is described. The formation engaging member has at least one first open hole surface engaging element () for penetrating a surface of an open hole, and at least one second open hole surface engaging element () for fractionally interacting with a surface of the open hole to form an interference engagement. A method of anchoring to a formation surface of an open hole and an anchor are also described.

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Aberdeen, United Kingdom

Steve Reid