METHOD OF DETECTING SEISMIC SIGNALS ON SEA AREA WHEN SEARCHING FOR UNDERWATER DEPOSITS OF HYDROCARBONS Russian patent published in 2013 - IPC G01V1/38 

FIELD: physics.

SUBSTANCE: disclosed is a method of detecting seismic signals on a sea area when searching for underwater deposits of hydrocarbons, in which the coastal area of the shelf plate is fitted with pairs of gradiometric seismic detectors which pick up seismic vibrations in the range from 0.1 to 20 Hz. Detecting elements of each pair of seismic detectors are turned from each other in the azimuth by 45 degrees. At frequencies from 0.003 to 0.1 Hz, microseismic vibrations are picked up, starting with frequency from 0.003 Hz. The seismic detectors are sunk into the sea bottom at a depth of 20-150 m by drilling a well; zero buoyancy buoys are placed at the well entry, said buoys being fitted with an anchor load and an electromagnetic circuit breaker, connected by a conducting rope to the seismic detector and fitted with a unit for recording seismic signals and a satellite communication channel.

EFFECT: high information value and reliability of seismic investigations when searching for underwater deposits of hydrocarbons.