Spectral analysis and machine learning to detect offset well communication using high frequency acoustic or vibration sensing

An early warning system for preventing fracture communication between wells, the system comprising:

• a sensor coupled to a fracking wellhead, circulating fluid line, or standpipe of a first well offset from a second well and configured to convert acoustic vibrations in fracking fluid in the first well into an electrical signal;
• a memory configured to store the electrical signal;
• one or more servers comprising a non-transitory, tangible computer readable storage medium, encoded with processor readable instructions to perform a method for warning against impending fracture communication between the first and second wells, the method comprising:
• analyzing current frequency components of the electrical signal in a window of time;
• identifying impending fracture communication between the first and second wells where the current frequency components show sufficient similarity to previous frequency components measured during previous instances of fracture communication between wells;
• and
• returning a notification of the impeding fracture communication to an operator of the well.