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US patent 9,903,972 - Seismic cable, system and method for acquiring information about seismic, microseismic and mechanical vibration incidents in a well.

Abstract

A seismic sensor cable for lowering into a subterranean well for acquiring information about seismic, microseismic and mechanical vibration incidents in the subterranean well, where the device comprises a first portion that is elongate and has a first length with a proximal end and a distal end that are to be lowered down into a lower part of the subterranean well, the first portion having a plurality of electric or electromechanical multicomponent seismic sensors that are connected and distributed over large parts of its first length, and wherein the seismic profiling device further comprises a second portion that is elongate and has a second length with a proximal end that is to be held above the subterranean well and a distal end that is to be lowered down into the upper part of the subterranean well, said second portion comprising an optical fiber that runs along large parts of said second portion, and an electric cable for conducting electric power from the proximal end to said seismic sensors in the first portion, and a connector for connecting the proximal end of the first portion to the distal end of the second portion. The invention also comprises a system and a method for acquiring information about seismic, microseismic and mechanical vibration incidents in the subterranean well.