Abstract：CFP(Common Focus Point)imaging technology contains confocal and bifocal version.The former is used to seek structural information while the later is used to seek reservoir-related information.By the aid of two consecutive and independent each other focus steps,the CFP technology separates the pre-stack migration from the velocity analysis progress using renewing of operator to replace traditionally direct renewing of velocity field and inversion of subsurface velocity field can be finally finished by correctly renewed focus operator.The technology maximally avoids the velocity problem while precision imaging can be got.This advantage can be widely used in every aspect of seismic inversion and data processing (such as handling complicated near-surface problem,removing multiple,multi-component imaging subsalt imaging and time-lapse seismic monitoring,etc).Therefore,the CFP imaging technology is a new imaging technology which has advanced theory and wide applied prospect,having a special effeet on solving complex geologic problems and gaining wide development space in our country.
