Downhole tubing
AssigneeWeatherford/Lamb, Inc.
InventorPaul David Metcalfe
Life of this patent
Estimating the term…
Abstract
There is provided a downhole tubing sealing system (10) comprising a radially expandable slotted tubular body (16) carrying deformable material (22) on the exterior thereof; and a seal member (26) for location within the tubular body and for engaging an inner surface of said body. There is further provided a method of sealing a portion of a downhole bore, the method comprising locating a radially expandable slotted tubular body (16) carrying deformable material (22) on the exterior thereof in a bore, expanding the body radially into contact with the bore wall, and locating a seal member (26) within the body and radially extending the seal member to engage an inner surface of the body, so sealing portion of the downhole bore.
Claims14
Downhole tubing for location in a bore, the tubing comprising a slotted tubular body carrying doformable material on the exterior thereof, the body being radially expandable from a first diameter to an expanded configuration in which the body defines a larger second diameter and contacts the bore wall, in the expanded configuration the slots permitting radial flow of fluid from the bore wall into the body and wherein the deformable material provides a substantially fluid tight contact with the bore wall.
A downhole tubing sealing system comprising:
- tubing for location in a bore, the tubing comprising a slotted tubular body carrying deformable material on the exterior thereof, the body being radially expandable from a first diameter to an expanded configuration in which the body defines a larger second diameter and contacts the bore wall, in the expanded configuration the slots permitting radial flow of fluid from the bore wall into the body;
- and a seal member for location within said body and for enqaging an inner surface of said body.
A method of isolating a portion of a downhole bore, the method comprising the steps of:
- providing a radially expandable slotted tubular body carrying deformable material on the exterior thereof;
- locating said body in a bore and expanding said body radially into contact with the bore wall;
- and
- locating a seal member within said body, and radially extending said member to engage an inner surface of said body.
A method of lining a downhole bore, the method comprising the steps of:
- providing a radially expandable slotted tubular body carrying deformable material on the exterior thereof;
- locating said body in a bore;
- and
- expanding said body radially into contact with the bore wall, wherein the deformable material provides a substantially fluid tight contact with the bore wall and whereby fluid may flow radially inwardly from the bore wall through the slots and into the body.
Downhole tubing comprising a radially expandable tubular metal body defining a plurality of overlapping longitudinal slots and having an external coating of deformable material thereon.
A tubular for use in a well, comprising:
- a expandable slotted tubular body;
- and
- a deformable seal material disposed on an exterior of a slotted portion of the body.
Dependencies are inferred from the claim text.