SEISMIC PROSPECTING METHOD WHILE SEARCHING FOR HYDROCARBON ACCUMULATIONS Russian patent published in 2008 - IPC G01V1/00 

FIELD: mining engineering.

SUBSTANCE: method differs in that along with microseismic earth noise registration one carries out wanted wave registration, aroused by seismic source and repeated registration of microseismic earth noise. At that registration of microseismic earth noise in working process is carried out in equal number of action on environment with seismic sources, then one defines according to these notes specific vectorial angle of low-frequency component and its part in common microseismic, finds relation of these parameters before and after action on environment with seismic sources. These data are used as additional informational parameters while interpretation of seismic data, taking for prognostic position of hydrocarbon accumulations areas with anomalous raise of microseism energy, and areas of sudden local vectorial angles increase (microseism energy), appearing on data set, received after the environment action of seismic sources are taken for zones of oil-in-water or gas-liquid contact.

EFFECT: improvement of forecast reliability and definition of hydrocarbon accumulation boundaries directly during seismic works.

2 dwg