Inventor

WITTRISCH CHRISTIAN

FR57 patents

⚠️ This page may combine multiple inventors who share the name “WITTRISCH CHRISTIAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WITTRISCH CHRISTIAN

INST FRANCAIS DU PETROLE

Process and device for installing seismic sensors inside a petroleum production well

Controlled-pressure drop liner

Method and device for carrying out interventions in wells where high temperatures prevail

Method and system intended for measurements in a horizontal pipe

Pumping device comprising two suction inlet holes with application to a subhorizontal drain hole

System, support for carrying out measurings and/or servicings in a wellbore or in a well in the process of being drilled and uses thereof

Method and device for carrying out measurings and/or servicings in a wellbore or a well in the process of being drilled

System for sensing acoustic waves in wells, allowing the mechanical uncoupling of the sensors

Method and device for performing perforating operations in a well

Method and a device for carrying out measurements and/or operations in a well

Method and device for effecting, by means of specialized tools, such operations as measurements in highly inclined to the vertical or horizontal well portions

Method and device for effecting, by means of specialized tools, such operations as measurements in highly inclined to the vertical or horizontal well portions

Axial-flow and centrifugal pumping system

Measuring device and method in a hydrocarbon production well

Device, system and method for drilling and completing a lateral well

Connection device for optical fiber

Jet pumping device

Measuring method and system comprising a semi-rigid extension

Reinforced composite rod

Device for storing and for handling a rod made of composite

Method and device for setting up sondes against the wall of a cased well

System for driving a non rigid exploration device into a well where its progression by gravity is difficult

Method and device for taking measurements and/or carrying out interventions in a sharply inclined well section and its application to production of seismic profiles

Process and device for guiding a drilling tool through geological formations

Method and device for making measurements characterizing geological formations, in a horizontal borehole formed from an underground way

Cable cutting coupling for drilling, production, well logging or other operations in wells

Hydraulic pressure propelled device for making measurements and interventions during injection or production in a deflected well

Device and method for the temporary protection of a working tool or measuring instrument fixed to the end of a drill string

Method and device for carrying out measurements and operations in a well

Equipment for a pipe string such as a drill-pipe string, comprising a side entry connection for passing a cable

Seismic prospecting method and device using a drill bit working in a well

Determing parameters of a geological environment

Device for coupling a receiver system with the wall of a well

System for moving a set of instruments and a method for measurement and/or intervention in a well

Measuring assembly comprising means for orienting a part of the measuring elements

Method for continuing measurements after recovery of a measuring tool immobilized in a well

Device for carrying out interventions in nonflowing deflected producing wells

Method and device for carrying out measuring operations of interventions in a well

Device for extracting a liquid out of a tube of great length

Method and device of seismic prospection in wells and particularly deviated wells

Protective device for enlarging the effective diameter of a probe in large diameter wells

Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment

Probe and its multidirectional anchoring device in a well

Method and device for taking measurements and/or carrying out interventions in a well subjected to hydraulic compression

Method and device for producing by pumping in a horizontal drain hole

Device and method for determining the orientation of fractures in a geological formation

Method and system for pumping in an oil well

COMMISSARIAT ENERGIE ATOMIQUE

Pressure sensor with temperature compensated optical fiber

INSTITIT FRANCAIS DU PETROLE

Method of plural zone pumping utilizing controlled individual pump inlet in each zone

WITTRISCH CHRISTIAN

Floating offshore wind turbine comprising an active nacelle tilt stabilization system