Exploration device for a subterranean formation traversed by a horizontal well comprising a plurality of sensors

摘要

The device has a number of rigid exploration modules connected end to end (M1-Mn), each comprising a rigid tubular element (1) with means of connection (2) at each end; at least one container (18) containing the sensitive elements; elastic means of spacing to hold each container against the wall of the shaft and means of decoupling to mechanically isolate each container. The device also contains a linking cable connected to a central station at the surface, and a recording block, comprising a collecting system connected to the modules by a bundle of electrical conductors which pass through the sensitive elements and are connected to them to collect the signals from the different elements, and means of electrical connection separate from the linking cable and the acquisition system. The recording block is located between the exploration modules and a rigid column connected to means of manoeuvre at the surface to drive the exploration assembly to the right part of the shaft.