Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1987-01-30
1988-11-15
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
405232, 405234, 405224, 405195, E02D 546
Patent
active
047845287
ABSTRACT:
The invention relates to a method and apparatus for increasing the capacity of a tubular driven pile. A refrigeration unit is lowered into the pile and grouted in place above a cement plug. The area between the refrigeration unit and the plug is filled with a secondary refrigerant. Seawater fills the pile above the refrigeration unit and is used for refrigeration unit cooling. The refrigeration unit cools the brine until the soil surrounding the pile is frozen. The adfreeze strength of the frozen soil and the pile increase the pullout resistance of the pile. Further, the end-bearing capacity of the pile is increased as a result of the large frozen mass surrounding the pile.
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"Mackenze Delta Drilling-Making Hole is Least of It", Ed McGhee, The Oil and Gas Journal, Jul. 3, 1972, pp. 33-36 & 39.
Borrmann Gerald F.
Hamburger Ronald O.
Lundberg Richard C.
Sabet Mahmoud H.
Spalding August V.
Chevron Research Company
Keeling E. J.
LaPaglia S. R.
Norviel V. A.
Taylor Dennis L.
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