莺东斜坡带速度分析方法研究及速度影响因素分析

莺歌海盆地是一个有勘探潜力的盆地,尤其是莺东斜坡带附近有良好勘探前景.但是由于研究区位于莺东斜坡带附近,因此构造解释具有相当的难度,尤其是由时间解释转化为构造解释有难度,需要有一个准确的速度来进行时深转换.基于此原因,本文首先介绍了速度谱拾取过程中的一些难点及解决方法;其后是速度分析取得的成果,通过DepthTeam形成速度体,从点、面、体三个不同角度证明了速度谱拾取过程中速度的准确性以及速度体的实用性;最后对单井和地层的速度进行了统计分析,总结了本区影响速度变化的主要因素.

Research of velocity analysis method and analysis of velocity influence factors in the east slope of Yinggehai basin

The Yinggehai Basin is great exploration potential, especially its east slope has great exploration prospects. However, the location of the study area is near the east slope of Yinggehai Basin, so it is quite difficult to interpretate the structure,especially how to transform the time interpretation to structural interpretation,which requires a precise velocity for time-depth conversion. This article first introduces some difficulties and solutions in the process of velocity spectrum collection,then formates velocity cube by DepthTeam according to velocity analysis achievement achieved,which proves the accuracy of velocity and practicality of velocity cube in the process of velocity spectrum collection from the spot, flour and cube.Finally the article makes a statistical analysis to velocity of wells and stratum,and summarizes the primary factors which affect the velocity change.