Centraliser
AssigneePetrowell Limited
InventorIain MacLeod
Life of this patent
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Abstract
A centralizer (10) for centralizing a tubular in a conduit is described. The centralizer comprises a body comprising a upper body portion (12) and a lower body portion (14) and a plurality of arms (16) linking the upper body portion to the lower body portion. Relative movement of the upper and lower body portions towards each other causes the arms to buckle radially outwards into a set configuration in which the arms are engaged, in use, with a conduit.
Claims36
A centraliser for centralising a tubular in a conduit, the centraliser comprising:
- a body comprising an upper body portion and a lower body portion;
- and
- a plurality of arms linking the upper body portion to the lower body portion, wherein the body and the arms are a single piece construction;
- wherein relative movement of the upper and lower body portions towards each other causes the arms to buckle radially outwards into a set configuration in which the arms are engaged, in use, with a conduit.
A method of centralising a tubular in a conduit comprising the steps of:
- providing a body comprising a upper body portion and a lower body portion and a plurality of arms linking the upper body portion to the lower body portion, wherein the body and the arms are a single piece of material construction;
- applying a setting force in a setting direction to move the centraliser upper body portion and the centraliser lower body portion together;
- and
- buckling the arms linking the upper body portion to the lower body portion radially outwards into engagement with a conduit wall.
A centraliser for centralising a tubular in a conduit, the centraliser comprising:
- a body comprising an upper body portion and a lower body portion;
- and
- a plurality of arms linking the upper body portion to the lower body portion;
- wherein relative movement of the upper and lower body portions towards each other causes the arms to buckle radially outwards into a set configuration in which the arms are engaged, in use, with a conduit,
- and wherein the upper body portion and the lower body portion are adapted to form an overlap, an upper body portion internal surface engaging a lower body portion external surface.
Dependencies are inferred from the claim text.