储层流体预测方法

METHOD FOR PREDICT FLUID CON- TENT IN RESERVOIR

根据弹性波在孔隙介质中传播的理论，对地震数据进行反演，估算目的层地震孔隙度、密度异常、泊松比、能量参数、衰减系数、瞬时速度及频率等多种地震信息，组成地震信息链，与已知油气田钻井的储层流体建立数量关系，进行分类描述。根据这种已知信息关系预测未知储层的流体性质。该方法在北部湾、琼东南和莺歌海等盆地进行预测，地质效果良好。

In order to estimate various seismic information of target reservoir such as the seismic porosity,density anomaly,Poission's ratio,energy parameter,attenuation coefficient,instantaneous velocity,etc.,which formed the seimic information chain,we may use the inversion of seismic data according to the theory of the propagation of elastic wave in the porous medium. After getting the seismic information,we may establish the quantitative relation between the seismic in- formation chain and the reservoir's fluid content of the known oil/gas field,by the relation then we may predict the fluid content of the unknown reservoir. Applied this method to the oil/gas fields located in Beibu Gulf,Ying Ge Hai and Qingdongnan Sea area have obtained good geological effect.