E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/12 (2006.01) G01V 3/20 (2006.01)
Patent
CA 2261686
An apparatus for borehole electric-field telemetry that comprises a source of modulated voltage or current (7), at least one axially non-conductive collar (1) connected between pipe sections in a pipe string (4), and a system of insulated wireline components (6) providing electrical connections (314, 315), insulated from drilling fluids, between the ends of the one or more aforementioned insulated collars (1) in the pipe string, to transmit the voltage or current.
La présente invention concerne un appareil de télémétrie à champ électrique pour trou de forage et comporte une source de tension ou de courant modulé. On monte au moins un manchon axialement non conducteur entre les segments de tubes d'une colonne de tubes et un système comportant des éléments isolés d'un câble électrique fournissant les raccordements électriques, isolé des fluides de forage, entre les extrémités d'un ou plusieurs desdits manchons ci-dessus mentionnés, dans la colonne de tubes, afin de transmettre ladite tension ou ledit courant.
Price Timothy
Towle James N.
Van Steenwyk Donald H.
Scientific Drilling International
Smart & Biggar
LandOfFree
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