水驱4D地震监测岩石物理研究综述  

A review on rock physical property study for 4-D seismic monitoring in water flooding reservoirs.

作　　者：云美厚[1] 杨凯[1] 丁伟[1] 唐庭海[1] 

机构地区：[1]中国石化胜利石油管理局

出　　处：《石油物探》2004年第3期309-312,共4页Geophysical Prospecting For Petroleum

基　　金：国家自然基金(40174018)

摘　　要：在前人研究成果的基础上,从Gassmann理论、测井数据以及岩石物理实验3个方面着重对水驱4D地震监测的岩石物理基础进行了分析。基于Gassmann方程的理论计算表明,油气层纵波速度一般低于水层的速度,油水层存在一定的速度差异。来自大庆、胜利以及新疆等地的部分测井资料表明,油层速度略低于水层速度,但这种差异并不明显。部分岩石物理实验测量结果也表明,高孔隙度、高渗透率岩石一般具有饱油纵波速度低于饱水纵波速度的特点;然而,也有相当一部分岩石物理测量结果与4D地震实施的理论基础相抵触。因此,进一步深入细致地开展水驱4D地震监测的岩石物理基础研究是非常必要的。Rock physics properties of 4-D seismic monito- ring in water flooding reservoirs are emphatically studied by comprehensively analyzing previous au- thors' results from Gassmann equation computation and logging data analysis and rock physical measure- ment. The computation results based on Gassmann equation show that velocities of rocks saturated with oil and water are different and P-wave velocity of rock saturated with oil or gas usually is lower than the velocity of the same rock fully saturated with wa- ter. The logging data from different oil fields, such as Daqing, Shengli, Xinjiang and so on, also show the same velocity regulation, but the velocity differ- ence is not so obvious. Some laboratorial data from sandstone with higher porosity and permeability also show the characteristics, but the other laboratorial data show opposite velocity regularity to the compu- tation results from Gassmann equation. Therefore, it is very necessary for 4D seismic monitoring in water- flooding reservoirs to research and measure systemi- cally the rock physical properties.

关 键 词：四维地震监测 水驱技术 孔隙率 渗透率 油水层 测井数据 4D地震油藏监测技术 

分 类 号：P631.4[天文地球—地质矿产勘探]