基于地震叠前反演的零散砂体岩体力学场建模  

Scattered Sand Rock Mechanics Field Modeling Based on Seismic Pre-stack Inversion

作　　者：方媛媛[1,2] 师永民[1,2] 王磊[1,2] 杜书恒[1,2] 盛英帅 

机构地区：[1]北京大学地球与空间科学学院,北京100871 [2]北京大学石油与天然气研究中心,北京100871

出　　处：《北京大学学报（自然科学版）》2015年第6期1040-1046,共7页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家重点基础研究发展计划(2009CB219302)资助

摘　　要：针对大庆油田外围扶杨低渗透油层分布零散,岩体力学性质变化快,储层改造难的问题,在大量岩体力学原位模型测定的基础上,研究纵横波速度之间的关系。从叠前弹性参数反演得到纵横波速度体,利用岩石物理关系式得到井间的岩体力学参数场,运用多元回归分析方法得到井点弹性参数值。结合井点与井间弹性参数值,采用地质统计学方法建立非均质岩体力学三维场,为水力压裂参数优化设计提供地质依据,达到增产的效果。For the sake of solving the problem in Daqing Fuyang low permeability reservoirs which is scattered distribution, and changes so rapidly in the mechanical properties of rock that restricts the reservoir reconstruction, a new method was presented in this paper. On the basis of lots of rock mass mechanics model of in situ experiments, the relationship between P-wave and S-wave velocities was studied, and P-wave and S-wave velocity bodies from pre-stack elastic parameter inversion were obtained. Besides, the rock mass mechanics parameters according to rock physics equation were gotten and the multiple regression analysis method was used to get well point elastic parameter values. The well points and cross-hole elastic parameter values were combined, and geostatistics method was utilized to establish the heterogeneity of rock mass mechanics field. The geological basis was provided to optimize hydraulic fracturing parameter design to increase production.

关 键 词：叠前弹性参数反演 岩体力学 低渗透油藏 

分 类 号：TE311[石油与天然气工程—油气田开发工程]