Back to results
US 9,869,163 B2Granted
Packer apparatus and method of sealing well casing
AssigneePaul Bernard Lee
InventorPaul Bernard Lee
Life of this patent
Estimating the term…
Abstract
A packer apparatus usable in a downhole well casing or an open borehole to provide an annular seal in the well casing or borehole. The packer apparatus includes an activation member disposed in body wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in a well casing in use. A plurality of pistons is arranged to move the activation member relative to the body, each piston being disposed in a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body.
Claims25
A packer apparatus for providing an annular seal in a downhole well casing or an open borehole, the apparatus comprising:
- a body arranged to be disposed in a well casing;
- an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in the well casing in use;
- and
- a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body, characterised in that when fluid pressure is reduced in the body, the activation member is able to move to return the elastomeric packer element to an undeformed condition.
1 more element
A packer apparatus for providing an annular seal in a downhole well casing or an open borehole, the apparatus comprising:
- a body arranged to be disposed in a well casing;
- an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in a well casing in use;
- and
- a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body, characterised in that activation member is maintained in the position deforming the elastomeric packer element outwardly relative to the body by fluid pressure only.
1 more element
A packer apparatus for providing an annular seal in a downhole well casing or an open borehole, the apparatus comprising:
- a body arranged to be disposed in a well casing;
- an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in a well casing in use;
- and
- a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body, characterised in that each said piston comprises an annular pressure port to enable wellbore fluid to be exhausted from the apparatus during activation of the respective piston.
1 more element
A downhole work string comprising:
- a first packer apparatus comprising a body arranged to be disposed in a well casing;
- an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in a well casing in use;
- and
- a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body, characterised in that when fluid pressure is reduced in the body, the activation member is able to move to return the elastomeric packer element to an undeformed condition;
- a second packer apparatus;
- and
- a ported sub connected between said first and second packer apparatuses.
4 more elements
A downhole work string comprising:
- a first packer apparatus comprising a body arranged to be disposed in a well casing;
- an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in a well casing in use;
- and
- a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body, characterised in that activation member is maintained in the position deforming the elastomeric packer element outwardly relative to the body by fluid pressure only;
- a second packer apparatus;
- and
- a ported sub connected between said first and second packer apparatuses.
4 more elements
A downhole work string comprising:
- a first packer apparatus comprising a body arranged to be disposed in a well casing;
- an activation member mounted to the body, wherein the activation member is moveable relative to the body to deform an elastomeric packer element outwardly relative to the body to form an annular seal in a well casing in use;
- and
- a plurality of pistons arranged to move the activation member relative to the body, each said piston defining a respective pressure chamber arranged to be filled with fluid in response to an increase in fluid pressure in the body to move each of the plurality of pistons relative to the body and cause the activation member to move relative to the body, characterised in that each said piston comprises an annular pressure port to enable wellbore fluid to be exhausted from the apparatus during activation of the respective piston;
- a second packer apparatus;
- and
- a ported sub connected between said first and second packer apparatuses.
4 more elements
Dependencies are inferred from the claim text.