VSP中绕射波形态的理论分析

THEORETICAL ANALYSIS OF DIFFRACTION WAVE PATTERN IN VSP

辽河石油物探局物探公司

Geophysical Corp. of Liaodhe Bureau of Petroleum Exploration

VSP中的绕射波有其独特的性质,它既是提高地质解释精度的有用信息,又往往成为解释“陷井”。本文例举油藏中有代表性的地质结构,对VSP中波的轨迹关系进行分析,从理论上给出了VSP绕射波的一般认识规律。同时,对VSP的施工设计和波的解释过程提出了某些看法。

The diffracted wave has its own unique features in VSP, which is of useful information for enhancing the accuracy in geological interpretation, but often turns to be a pilfall in interpretation. The typical geological structures of oil pool are enumerated; the track bearing for VSP is examined; and general rules for identifying VSP diffracted wave are given in theory. Also, comments on the layout of VSP as well as interpretation procedures are made.