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US 12,760,818 B2Granted
Methods for joining lined pipes and associated apparatus
AssigneeFlowlining Limited
InventorStephen Barnes
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for making lined pipelines utilize lined pipes and fittings attached to the ends of the lined pipes. Castellations are formed on the inner surfaces of the fittings. First and second ends of a fit-up sleeve are inserted into the fittings on the ends of first and second lined pipes and the first and second ends of the fit-up sleeve force portions of the liners within the pipes into engagement with the castellations on the inner surfaces of the fittings. The fittings are then attached to each other to join the first and second lined pipes together.
Claims20
A pipeline comprising:
- a first lined pipe having a first liner;
- a second lined pipe having a second liner;
- a first fitting joined to the first lined pipe, wherein a plurality of castellations are provided on an internal surface of the first fitting;
- a second fitting joined to the second lined pipe, wherein a plurality of castellations are provided on an internal surface of the second fitting;
- and
- a fit-up sleeve, comprising:
- a first end that is inserted into the first fitting such that the first end of the fit-up sleeve forces a first portion of the first liner against a corresponding first portion of the castellations of the first fitting;
- and
- a second end that is inserted into the second fitting such that the second end of the fit-up sleeve forces a first portion of the second liner against a corresponding first portion of the castellations on the second fitting;
- and
- wherein the first fitting is joined to the second fitting.
8 more elements
Dependencies are inferred from the claim text.