摘要
井间地震观测的目的是利用井间速度成像和井间偏移成像来研究井间介质的横向变化，为油藏工程、油气藏储层特征描述服务。由于其观测方式独特，在某一井中激发、另一井中接收，选用不同的井间观测系统方式，对层析及演、偏移成像都有很大的影响。本文采用数值模拟方法来研究不同并间距条件下观测、激发、接收并与共间构造走向及子波频率与分辨率的影响关系。这对于实际井间资料的采集具有实用价值。
The object of crossborehole seismic observation is to ascertain the lateral variation of crossborehole medium by doing both the crossborehole velocity image and crossborehole migration image, so as to serve reservoir engineering and reservoir description. Different observation systems cause different influences on tomographic inversion or migration image because of the unique observation that puts source in a borehole and receivers in others. Numerical modeling is used to analyse the relations between the shot-receiving borehole distribution and geological structure trend, and between wavelet frequency and resolution under the conditions of different interborehole distances. The analysis is of great significance to crossborehole seismic data acquisition.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1994年第5期576-580,共5页
Oil Geophysical Prospecting
关键词
井间地震
观测系统
数值模拟
地震勘探
crossborehole seismology, observation system, numerical modeling
