METHOD AND SYSTEM OF CALCULATING HYPOCENTERS OF MICROSEISMIC EVENTS

摘要

Calculating hypocenters of microseismic events. At least some of the example embodiments are methods including: detecting seismic waves from a microseismic event, the detecting by a sensor array disposed on a seafloor, the microseismic event originating in a formation below the sensor array, and the detecting creates received data; separating the received data into up-going data and down-going data, the down-going data indicative of detected seismic waves after a first reflection of the seismic waves at a sea surface; and calculating a hypocenter of the microseismic event using both the up-going data and the first down-going data.

主权项

1. A method comprising:
detecting seismic waves from a microseismic event, the detecting by a sensor array disposed on a seafloor, each sensor of the sensor array having a hydrophone and a particle motion detector, the microseismic event originating in a formation below the sensor array, and the detecting creates received data; separating, by a computer system, the received data into up-going data and first down-going data, the first down-going data indicative of detected seismic waves after a first reflection of the seismic waves at a sea surface; and calculating, by a computer system, a hypocenter of the microseismic event using both the up-going data and the first down-going data.