APPLICATION OF PRE-STACK ELASTIC IMPEDANCE INVERSION TO RESERVOIR PREDICTION

Prestack elastic-impedance inversion is currently a hotspot on seismic inversion technique,which utilizes different offset gathers data and logging data like S-wave,P-wave,density etc,jointly inverts a variety of elastic parameters which is related to lithology and hydrocarbon potential.This inversion method can determine reservoir properties and hydrocarbon potential,and the inversion result has a great improvement in reliability compared with the post-stack acoustic impedance inversion.It can obtain more sensitive and effective data,helping to describe hydrocarbon potential semi-quantitatively and quantitatively,and has broad application prospects.This paper describes the basic principles and methods of pre-stack elastic impedance inversion and performs an actual data analysis of certain oilfield in Xinjiang.The results shows the goods effects and provide an important basis for reservoir prediction and reserve calculation.