Methods of forming insulated pipeline bundles

Details Methods of forming insulated pipeline bundles Methods of forming insulated pipeline bundles

1995-12-12

1998-08-11

Brinson, Patrick F.

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138113, 138 98, 166293, 264269, F16L 914

Patent

active

057913803

ABSTRACT:
Methods of forming highly insulated pipeline bundles made up of one or more flow lines positioned within a continuous larger diameter outer sleeve are provided. The methods basically comprise the steps of filling the space between the outside of the flow lines and the inside of the outer sleeve with a foamed cement composition comprised of hydraulic cement, water, a gas and a foaming agent, allowing the hydration reaction between the hydraulic cement and the water in the cement composition to take place, and then heating the hydrated cement composition to evaporate and remove excess water in the cement composition and thereby increase the insulating properties of the cement composition.

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