US 4,742,876 AGranted

Submarine drilling device

AssigneeSoletanche

InventorsHerve Barthelemy, Karl Bollinger, Michel Brochier, Maurice Gau, Yves Legendre

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Abstract

A device for submarine foundation drilling includes: a drilling unit including a head and body interconnected by at least one cylinder, the body being equipped with at least one cutter, the drilling unit being equipped with at least one excavating pump, and hydraulic motors to operate the cutter and the pump; a rigid tubular assembly (2) containing at least one discharge pipe, and pipes for feeding hydraulic fluid to the cylinder and the motors; connecting means (12) between the head of the drilling unit and the lower part of the tubular construction; support means (13) able to be placed at the ocean bottom in front of the head of the drilling unit, means for clamping the tubular assembly; means for suspending the device from a ship, means (5) being provided to furnish hydraulic power, and connecting pipes being provided between the means of furnishing fluid and the upper end of the tubular assembly.

Claims21

Dependent claims

A device for offshore drilling for foundations, comprising:

a drilling unit including a head (21) and a body (22) interconnected by at least one hydraulic cylinder (23), said body being equipped with at least one cutter (26), said unit being further equipped with at least on pump (29) for discharging cuttings, and with hydraulic motors (27, 30) to drive said cutter and said pump,
a rigid tubular assembly (2) having at least one discharge pipe (52) for discharging the cuttings, and pipes (57) for feeding said cylinder and said motors with hydraulic fluid,
connecting means (12) between the head of said drilling unit and a lower end of said tubular assembly,
support means (13), able to be placed onthe seabed in front of the drilling unit, for clamping means (16) of said tubular assembly, and
means for suspending the device from a ship (3),
means (5) being provided for the furnishing of hydraulic fluid, and connection pipes being provided between said fluid-furnishing means and an upper end of said tubular assembly.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/917,453Filed 9 Oct 1986
Priority: FR 85 149399 Oct 1985
Granted: 10 May 1988
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

E02F 3/205
With tools that only loosen the material , i.e. mill-type wheels: with a pair of digging wheels, e.g. slotting machines
E02D 5/38
Concrete or concrete-like piles cast in position ; Apparatus for making same: making by use of mould-pipes or other moulds
E02D 5/523
Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments: composed of segments
E02D 7/28
Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds: placing of hollow pipes or mould pipes by means…