Abstract: A stator element of a progressive cavity pump having a reinforcement tube having a longitudinal axis, an inner face (22), and an outer face, and an elastomer liner fixed to the inner face of the reinforcement tube, wherein a portion of the reinforcement tube has a substantially constant thickness (e) and in that said portion of the reinforcement tube is deformed such that it comprises at least a first relief pattern and a second relief pattern, the first relief pattern having the shape of a helical strip that is right-handed relative to the longitudinal axis, the second relief pattern having the shape of a helical strip that is left-handed relative to the longitudinal axis, the first and second relief patterns meeting in at least one section.

Abstract: A device for testing samples of material in a fluid upstream of a pump of a fluid pumping installation and a pumping installation comprising such a device, the device comprising: a casing having one inlet opening for the fluid and one outlet opening for the fluid, the outlet opening fixed to the pump; and a perforated cartridge to contain the samples of material to be tested, the perforated cartridge being arranged in the casing between the inlet opening and the outlet opening.

Abstract: The invention relates to a dispensing device for flowable products, the dispensing device comprising: at least a first and second plugs adapted to allow or prevent the flow of product; a first guide block comprising a guide hole adapted to guide the first plug, and a channel in communication with the guide hole, that allows the passage of maintenance fluid; a second guide block isolated from the first guide block, the second guide block comprising a guide hole able to guide the second plug, and a channel for passage of maintenance fluid, and a coupling adapted to connect in a fluidtight manner the channel of the first guide block to the channel of the second guide block, in order to allow the passage of maintenance fluid.

Abstract: A torque anchor intended to block the rotation of a production string with respect to a casing of a well; the torque anchor comprising a body and anchor cassettes comprising a wheel having a circumference and a wheel spindle supporting said wheel, a contact point of the circumference of the wheel being intended to come into contact with the casing, an opposite point being arranged diametrically opposite the contact point. For each anchor cassette, the wheel is mounted on the end of the wheel spindle; a positioning angle comprised between 30° and 180° being defined between a first straight line passing through the center of the casing and the contact point and a second straight line passing through the center of the casing and the opposite point.

Abstract: A torque anchor intended to block the rotation of a production string with respect to a casing of a well, the torque anchor comprising a body, at least two supports mobile with respect to the body, wheels borne by the supports, the wheels being suitable for running on an inner face of said casing, at least one restraining device suitable for exerting a force on said wheels in order to anchor said wheels in said casing. Each restraining device comprises a set of springs suitable for acting on the set of said supports and a guide capable of guiding said set of springs; said guide being borne by said supports; said guide being mobile with respect to at least one support.

Abstract: A helical rotor intended to be arranged in a progressing cavity pump, said progressing cavity pump being capable of pumping a multiphase fluid from a fluid reserve, the helical rotor comprising at least one mixer capable of homogenizing the multiphase fluid located in said fluid reserve.

Abstract: A progressive cavity pump comprising a casing, a helical stator including a helical cylinder and a helical rotor capable of rotating inside said helical cylinder. The helical stator also comprises at least one compensator arranged in said casing, between the casing and said helical cylinder; said helical cylinder and said compensator being deformable in a direction perpendicular to the longitudinal axis of the casing.