Pcm Technologies

Stephen Burrows

Francois Millet

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&#xb0; and 180&#xb0; 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.

Torque anchor for blocking the rotation of a production string of a well and pumping installation equipped with such a torque anchor

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.

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La Chapelle sur Erdre, France

Stephen Burrows