Sercel Inc.

Jean-Eric Negre

Thierry De Kimpe

Ronan Affre De Saint Rome

Michel Terre

Jean Czernichow

Emmanuel Senechal

Luc Fety

Jerome Decressat

Method and down-hole tool for use inside a well, the down-hole tool including a housing; an anchoring arm rotatably attached to the housing and configured to move between an open position and a closed position; a spring block configured to have a central part that moves along a longitudinal axis (X) of the housing which results in the movement of the anchoring arm between the open or closed positions; and an actuating mechanism connected to the central part and configured to move the central part along the longitudinal axis. The spring block is detachably attached to the housing.

Anchoring mechanism and method for down-hole tool

Method and apparatus for collecting data. The apparatus for a motorless seismic tool includes a body; a motorless clamping mechanism connected to the body; and an anchoring arm attached to the body and the motorless clamping mechanism. The motorless clamping mechanism is configured to close or open the anchoring arm based on gravity.

Apparatus and method for a motorless seismic tool

The invention proposes a data transmission process, from a first unit () situated at a predetermined depth of an oil well to a second unit () situated at the surface of this well, the process comprising a digital-analog conversion stage () of the data to obtain an analog signal forming support of the data, and an amplification stage () of this signal prior to its emission in a cable () connecting the two units,

Multi-carrier transmission process and system in a difficult environment with optimisation of emission power

The invention concerns an independent measuring and processing probe designed to be lowered in a tube for temporarily installation at the bottom of a hydrocarbon well. It includes removable anchoring resources () capable of anchoring the probe to a casing at the bottom of the well, a set of sensors, at least one of which is a seismic sensor, recording resources, resources for processing the measurements provided by the sensors, and a central body () integrally reamed throughout the whole of its length by an opening () so as to allow free passage through the probe when it is in the anchored position. Such a probe can be used in particular to effect a reliable preliminary study on the well before installing a more complete observation system.

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Verriéres le Buisso, France

Jean-Eric Negre