Institut Francais Du Pe'trole

Institut Francais Du Petrole, Des Carburants Et Lubrifiants Et

Commissariat a L'energie Atomique

Institut Francaise Du Petrole, Des Carburants Et Lubrifiants

Jean Thiery

Michel Chatard

Michel Huvey

Guy Pignard

Andre Chevalier

Remi Reynard

Pierre Grolet

Alain Sonnet

Gerard Bonavent

Michel Fabre-Curtat

An assembly for driving a drilling tool in rotation about an axis related to the drilling tool from a drive column, rotating at its lower end about a second axis, with the axes being substantially convergent at the same point and forming therebetween an angle alpha. The assembly comprises in combination a remote controlled deflector adapted for creating a deviation of an angle alpha, a controller for controlling the value of the angle alpha, a guide for rotating a drilling tool and the drive column at its lower end about the axes relatively to the deflector and a controller for controlling the polar position of the deflector relatively to second axis.

Assembly for making oriented bore-holes

This turbo-coring device comprises a tubular body provided with a coring bit and surrounded by a following pipe provided by a reaming bit. The tubular body is connected to the turbine through a fluid distributor having a side opening for discharging above the following pipe in the annular space between the device and the borehole wall a fraction of the fluid leaving the turbine, while the remaining fraction feeds the tubular body. The following pipe is connected to the outer wall of the fluid distributor through releasable bayonet type latching means. Means are provided for automatically closing the fluid discharge opening when the lower part of the tubular body becomes obturated by ground formations and an annular sealing packer is positioned between the tubular body and the following pipe.

Turbo-coring device equipped with a following pipe

This device comprises means for handling a flexible elongate member, in combination with means for automatically controlling said handling means in response to a detected deformation of the loop portion formed by the flexible member near the storage basket, so as to bring this loop portion back to a preselected geometrical configuration.

Method and device for automatically positioning a flexible elongate

The invention relates to a flexible elongated member provided with a reinforcing armouring formed by profiled rods. The convolutions of said reinforcing armouring are wound in such a manner that the moment of inertia of the cross section of the profiled rods is maximum with respect to an axis perpendicular to a radial direction of the elongated member.

Flexible elongated member comprising a reinforcing armouring

A new type of gripping shoe for traction devices of the caterpillar type, comprising a deformable element of composite structure. The deformable element comprises a body member which is mechanically resistant, deformable and of low elasticity. This body member is provided with a large internal recess housing a sole member of a highly deformable, elastic and substantially incompressible material.

Gripping shoe equipping a device for pulling an elongate member

The present invention relates to an apparatus or device for storing elongated flexible elements, such as drilling pipe, in a coiled form. This apparatus includes an inner cylindrical framework supported about a vertical axis, an outer cylindrical framework concentrically separated from the inner framework and connected thereto by an annular base plate closing the bottom of the apparatus. The space between the inner and outer frameworks is open at the top to receive the elongated elements, and the annular base plate is formed of a plurality of annular sector elements connected together in such a manner as to allow a vertical displacement of respective adjacent elements with respect to one another. Various means for connecting adjacent elements are provided. Moreover, various driving and supporting members are provided for rotating the apparatus about the vertical axis.

Apparatus for storing a flexible elongated member, such as a flexible

This coupling houses nail-shaped anchoring means having preferably a jagged profile, which are inserted between adjacent reinforcing elements of the pipe armouring. A solidifiable material binds these nail-shaped anchoring means and the reinforcing elements of the pipe armouring firmly together.

Growing community of inventors

Le Pecq, France

Jean Thiery