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US 8,895,642 B2Granted
Buoyancy control material for subsea main pipelines and high-density buoyancy control material for subsea main pipelines
OwnerAnatoly P. Svechkopalov, Igor I. Shaporininventors
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Abstract
The buoyancy control material for subsea main pipelines and high-density buoyancy control material for subsea main pipelines are suggested predominantly for use while manufacturing pipes for subsea pipeline installations. Creation of a buoyancy control material with a density greater than 2800 kg/m3 and the required mobility is an engineering problem solved by this invention. The buoyancy control material for subsea main pipelines contains cement, filler, plasticizing agent and water.
Claims2
The buoyancy control material for subsea main pipelines, said material comprising:
- a sulfate-resisting portland cement,
- a filler including at least one of barite middling product, barite ore, and ferro-manganese concentrate,
- a polycarboxylate-ester-based plasticizing agent, and
- water, wherein
- a component ratio of entire buoyancy control material is as follows, % wt:
- said sulfate-resisting portland cement is from 8.2 to 10.5, water is from 5.2 to 6.7, and said polycarboxylate-ester-based plasticizing agent is from 0.1 to 0.15.
3 more elements
Dependencies are inferred from the claim text.