End fitting for a pipe and associated methods
AssigneePolyflow LLC
InventorLiang Yu
Life of this patent
Estimating the term…
Abstract
An end fitting for connecting two sections of pipe to one another can comprise a first tubular member, and a second tubular member disposed coaxially about the first tubular member to delimit an annular gap therebetween for receiving an end portion of a pipe. A sleeve can be disposed coaxially about the first tubular member and within the annular gap such that a pressurised medium is receivable between the sleeve and one of first and second tubular members to move at least a portion of the sleeve radially and thereby clamp the end portion of the pipe between the first and second tubular members when received in the annular gap. The end fitting may have particular application in conveying oil and gas field fluids, including hydrocarbon fluids.
Claims11
An end fitting for connecting two sections of pipe to one another, the end fitting comprising:
- a first tubular member;
- a second tubular member disposed coaxially about the first tubular member to delimit an annular gap therebetween for receiving an end portion of a pipe;
- and
- a sleeve disposed coaxially about the first tubular member and within the annular gap such that a pressurised medium is receivable between the sleeve and the first tubular member to move at least a portion of the sleeve radially outward and thereby clamp the end portion of the pipe between the first and second tubular members when received in the annular gap, wherein the end fitting comprises a further sleeve disposed coaxially about the sleeve and within the annular gap such that a further pressurised medium is receivable between the further sleeve and the second tubular member to move at least a portion of the further sleeve radially inward to thereby clamp the end portion of the pipe.
Dependencies are inferred from the claim text.