Soletanche

Commissariat a L'energie Atomique

Societe Anonyme Dite - Soletanche

Herve Barthelemy

Yves Legendre

Jean-Paul Geffriaud

Michel Brochier

Karl Bollinger

Maurice Gau

Vincent Foglia

Jean Minier

A device for injecting grout around a tubular pile driven into the ground. The tubular pile has a given diameter and is formed by a tubular wall of a given wall thickness defining the inside and outside of the tubular pile. A grout feed channel capable of being driven into the ground with the tubular pile is disposed inside the tubular wall having a diameter which is small relative to the diameter of the tubular pile. A check valve is connected to the grout feed channel at a position along the tubular wall and extends through the thickness of the tubular wall so as to communicate from the grout feed channel through the outside of the tubular wall. An injection device is inserted in the grout feed channel having one plug which is fitted in the grout feed channel and located above the check valve so as to inject grout under pressure through the injection device and the check valve to the outside of the tubular wall.

Device comprising a valve for injecting grout around or inside a tubular

A process for attaching an injection pipe with injection valve means to the inside wall of a tubular pile section comprising: drilling holes at a plurality of points along a generatrix of the pile section said holes passing through the wall of the pile; preparing an injection pipe having substantially the same length as the section of the pile to which it is to be attached; connecting said injection pipe with injection valve to said pipe, the spacings between said valve means corresponding to those of the said holes drilled in the wall of the pipe; engaging said injection pipe in the interior of the pile while positioning the injection valve means into said holes drilled in the pile; and welding said valve means to the wall of the pile from the exterior of the pile.

Process and device for the injection of a slurry in the vicinity of the

The invention is a method for installing a piling of a predetermined target depth in the ground, particularly on the ocean floor. A pipe is lowered into the ground together with a drilling machine having rotatable cutters movable from a first position in which their transverse dimension is less the inner diameter of the pipe to a second position in which their transverse dimension is greater than the outer diameter of the pipe. The cutters are lowered to a location below the pipe, moved to the second position, and rotated to drill a hole having a diameter larger than the outer diameter of the pipe. After the cutters are retracted and the drilling machine is raised back within the pipe, the pipe and drilling machine are lowered to the bottom of the hole. The steps are repeated until the total target depth is reached. The drilling machine is then removed and the anular space between the wall of the hole and the exterior surface of the pipe is filled with cement.

Process for placing a piling in the ground, a drilling machine and an

The invention relates to a process for the reinforcement of anchoring pilings used particularly in the oil-drilling industry, where a tubular steel piling (1) is driven into the ocean floor. Successive injections of a grout which can harden are made into the ground (7) which is contained inside the piling.

Process for reinforcing a driven tubular piling, the piling obtained by

The invention concerns an arrangement for underwater drilling of foundations, comprising at least one cutter (27) and one pump (29) for discharge of excavated material, and hydraulic motors for driving the said cutter and the said pump. It comprises an hydraulic turbine (16) capable of functioning by means of a fluid such as sea water, and an hydraulaic plant driven by the said turbine and designed for feeding the said hydraulic motors.

Arrangement for underwater drilling of foundations

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.

Submarine drilling device

The invention relates to a device for the production of circular boreholes in soil, of the type incorporating a pair of bits driven in rotation in opposite directions, the said bits being equipped with teeth or similar members for breaking up the soil. It comprises a first pair of bits (6) which are equipped with teeth, rotating in opposite directions around two parallel axes, each of these bits having the external shape of a volume of revolution the generatrix of which consists of a circular arc corresponding to the circular cross-section of the borehole which it is intended to dig, and a second pair of bits (7) situated above the first, and the bits (14a,14b) of which have the same structural characteristics as the bits of the first pair but whose axes of rotation are offset relative to the latter.

Hydro-drill with circular impression

System for drilling from a water surface, of the type having means for exerting and maintaining on the drilling tool a bearing stress, which is constant and normal to the surface to be perforated, no matter what the effect of the swell, wherein it comprises in combination: a base having a central passage for the drill pipe string of a drilling apparatus, which is intended to rest on the sea bed and is elastically connected to means for receiving a cylindrical box; a column formed by a cylindrical tubular central guide, for permitting the passage and guidance of the drill pipe string of the drilling apparatus, the column being surrounded by an external cylindrical tubular envelope, the hollow annular space formed between the central guide and the envelope being subdivided into a tight member constituting the lower ballast, a tight intermediate member of variable length determined as a function of the mean value of the section of water under which drilling takes place, a tight member constituting an upper ballast and a head member, the total height of the column exceeding the maximum depth of the section of water, the lower cylindrical part of the column being shaped so that it is placed in the reception means of the base and the head member of the column supporting a platform for installing the drilling apparatus; and a barge moored to anchor lines on the site where drilling is to take place, which is provided with an annular collar for receiving with a clearance the head member of the column in order to permit both vertical sliding and tilting with respect to vertical of the head member.

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Croissy sur Seine, France

Herve Barthelemy