Distributed Acoustic Sensing for Passive Ranging

摘要

A passive system for ranging between two wellbores where a distributed acoustic sensor system is deployed in a first wellbore and a drill bit in a second wellbore being drilled is utilized and an acoustic source to generate an acoustic signal for measurement by the distributed acoustic sensor system. The dynamic strain along the distributed acoustic sensor system is detected with an optical interrogation system and utilized to determine direction and distance between the first wellbore and the second wellbore.

主权项

1. A wellbore ranging system comprising:
an optical waveguide disposed in a first wellbore of a formation; and an acoustic source disposed in a second wellbore and acoustically coupled with the formation.