Schlumberger Technology Corporation

Stephane Guimont

Roel Van Os

Orland Guedes

Jean-baptiste Cozon

Hiroshi Hori

Viet Tung Nguyen

Zheng Li

A downhole tool having an acoustic transducer for downhole measurements. A backing is in contact with an inner surface of the transducer. A first structure is coupled to a first housing. A second structure is coupled to a second housing. A member includes first, second, and third portions. The first portion is coupled to the first structure. The second portion is coupled to the second structure. At least one of the first and second structures is coupled to the member and has a degree of freedom relative to the member. The third portion extends longitudinally through the backing between the first and second portions such that compressional forces on the first and second housings are transferred through the first and second structures and the backing. A canister contacts an outer surface of the transducer and exerts radial forces on the transducer when exposed to pressures higher than atmospheric pressure.

Circular downhole ultrasonic phased array

A fluid seal assembly having a sleeve disposed circumferentially around a downhole tool. First and second fasteners extend circumferentially around the sleeve proximate respective first and second ends of the sleeve. The first and second fasteners may comprise a shape-memory alloy that, in response to a temporarily increased temperature, have caused the first and second fasteners to circumferentially compress the sleeve against an outer surface of the downhole tool.

Fluid sealing for downhole acoustic measurement tool

Growing community of inventors

Clamart, France

Stephane Guimont