Institut Francais Du Pe'trole

Christian Bardin

Pierre Morin

Jean Gilbert Boulet

Henri Cholet

Guy Pignard

A device for remotely actuating a piece of equipment by varying the flow conditions of a fluid, possibly incompressible, an comprising an actuating piston, a nozzle-needle assembly. One of the nozzle or the needle is mounted for sliding movement into the piston. An arrangement is provided for returning the slidably mounted nozzle or needle to a predetermined position relatively to the piston.

Device for remotely actuating equipment comprising a bean-needle system

A fitting for controlled trajectory drilling. This fitting comprises a downhole motor, a drilling tool, and a variable geometry stabilizer.

Fitting for controlled trajectory drilling, comprising a variable

A fitting for controlled trajectory drilling. This fitting comprises a downhole motor, a drilling tool, at least one stabilizer and a remote controlled variable angle elbow element.

Fitting for controlled trajectory drilling, comprising a variable angle

Drilling fitting equipment is disclosed, comprising a drilling motor, a member to be actuated, an information detection unit and a power unit for controlling the member, the motor comprises an energy transformation zone for rotating a drilling tool, the zone having an upper end, the equipment comprising a flow of drilling fluid through the drilling fitting, wherein the member to be actuated and at least one of the elements of an assembly formed by the detection unit and the power unit are situated on opposite sides of the upper end.

Equipment for a drilling fitting comprising an element to be actuated, a

A method of and a device for remotely-controlling at least one piece of drill string equipment from an instruction issued from the surface. The method includes issuing from the surface a first information sequence to cause a first predetermined action according to a predetermined sequence, detection of a condition indicative of a second sequence resulting from the first sequence, comparison of this second sequence with another predetermined sequence, and operating the equipment only if there is similarity between the latter two sequences. The method can be applied to actuation of a variable-angle bent element.

Method and device for remote-controlling drill string equipment by a

Inclined-jet drilling tool

A method and device are provided for detecting a fluid flow rate, said device comprising a body in which is formed a passage for the fluid, said passage comprising at least two cross sections of different values, a piston having two faces cooperating with the housing, said piston defining with said housing two zones situated on each side of the two faces of said piston, means for returning said piston to a first position or rest position, each of said zones being substantially at the same pressure as said passage at the level of one of the two cross sections.

Method and device for detecting a fluid flow rate

A method and a drilling tool are provided improving removal of spoil during drilling. The method allows the spoil to be removed from a drilling tool rotating, more especially on itself in operation, about a proper axis, or axis of the tool, said tool comprising a body a first end of which is adapted for connection to rotary drive means and the second end of which, said second end comprising water passages, defines the cutting face, the zone of said second end adjacent said axis is called central part of the tool, said tool comprises at least one nozzle. The method consists in positioning said nozzle in a water passage for producing a flow orientated towards the central part of the tool, and since the vector obtained by the orthogonal projection on a plane perpendicular to the axis of the tool of the speed of said flow in the central part of the tool is zero at any point of said central part, said vector will be qualified as effective speed vector.

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Rueil Malmaison, France

Christian Bardin