Patent ID: 9175558
Filing Date: 2015-11-03
Classification: E21B

Abstract:
1. A sensor array system comprising: a sensor array comprising first, second and third distinct groups of multiple proximal sensors disposed underground, at least one of the first, second and third distinct groups of multiple proximal sensors being arranged in a first configuration of sensors and at least another one of the first, second and third distinct groups of multiple proximal sensors being arranged in a second configuration of sensors, which is geometrically distinct from the first configuration of sensors; and a processor communicatively coupled to each sensor of each of the distinct groups of the multiple proximal sensors of the sensor array, the processor operative to receive signals from the sensors indicative of seismic activity, and to identify a position of a portion of a borehole machine operative to induce the seismic activity while disposed in an underground borehole, wherein each sensor in each of the first, second and third distinct group of multiple proximal sensors is respectively disposed in a single, unique borehole.