Pipes and tubular conduits – Plural duct – With spacer and encircling element
Reexamination Certificate
2006-01-03
2006-01-03
Brinson, Patrick (Department: 3754)
Pipes and tubular conduits
Plural duct
With spacer and encircling element
C138S113000, C138S114000, C138S149000, C138S148000, C138S137000
Reexamination Certificate
active
06981525
ABSTRACT:
A tubular insulating apparatus (10) for insulating a first tubular (8) within a second tubular (20) for use in the oil and gas exploration and production industry. An inner insulating member (4) surrounds the outer circumference of a pipeline (8) and a rigid spacer member (16) supports the pipeline (8) within the second tubular (20), the rigid spacer member (16) being provided at the ends of the apparatus (10). A substantially resilient member (2) is also provided on the outer most face of the inner insulating member (4) and a helically arranged cut (6) is provided therethrough in order to allow tensile and compressive forces caused by a bending moment acting along the longitudinal axis (14) of the apparatus (10) when e.g. the pipeline (8) is placed upon a reel, to be substantially relieved. Methods of manufacturing and installing the apparatus (10) are also provided.
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patent: WO 03/098093 (2003-11-01), None
Akin Gump Strauss Hauer & Feld & LLP
Brinson Patrick
Subsea 7 BV
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