Hydraulic and earth engineering – Marine structure or fabrication thereof
Patent
1986-10-17
1989-01-24
Reese, Randolph A.
Hydraulic and earth engineering
Marine structure or fabrication thereof
405232, 166 55, 166297, 30 92, E02D 900, E21B 2902, B23D 2100, B26D 316
Patent
active
047998296
ABSTRACT:
Disclosed is a method and apparatus for cutting piling and conductors extending into the sea floor from an offshore platform. A window is cut into the piling to permit access to the stabbing point which is then removed. The piling is washed out to remove sand and mud at least to the depth where the cut is to be made. A cutter/pinning device is lowered to the disired elevation of cut. Once the cutter/pinning device is properly positioned, engaging pistons are driven radially outward from the cutter/pinning device to engage the walls of the piling, preferably both above and below the line of cut. A series of radially disposed torches or explosives within the cutter/pinning device are then ignited to burn or blow a circumferential cut in the piling at the desired elevation of cut which will typically be twenty feet below the mud line. The support cable or tubing used to lower the cutter/pinning device is then withdrawn from the piling leaving the cutter/pinning device behind still engaging the piling both above and below the line of cut, thereby ensuring structural stability of the piling until it is desired to disassemble and remove the offshore platform.
REFERENCES:
patent: 2884066 (1959-04-01), Teplitz et al.
patent: 3224204 (1965-12-01), Siebenhausen
patent: 4043389 (1977-08-01), Cobb
patent: 4158388 (1979-06-01), Owen et al.
patent: 4298063 (1981-11-01), Regalbuto et al.
patent: 4352397 (1982-10-01), Christopher
patent: 4598769 (1986-07-01), Robertson
patent: 4619318 (1986-10-01), Terrell et al.
Reese Randolph A.
Ricci John A.
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