塔北油区岩石声发射全过程曲线类型及特征

ACOUSTIC EMISSION SIGNATURES OF VARIOUS ROCK TYPES FROM THE NORTH TARIM BASIN

本文讨论了岩石试样在加载全过程中的声发射特征、不同岩石声发射全过程曲线的分类以及类型的确定方法；对新疆塔里木盆地北部油区井下和地表试样进行了统计、分类，确定出该油区泥岩、砂岩声发射全过程曲线存在Ⅰ、Ⅲ两种类型；白云岩、灰岩、玄武岩声发射全过程曲线具有Ⅰ型特征。

AE characteristics and classification of curves of total AE accounts versus applied stress for rock specimens from the North Tarim Basin during the whole process of loading are discussed in the paper.It is put forward that four methods can be used to determine the AE curve types of rocks.A statistical analysis of the results for rock samples collected from the wells and surfaces in the North Tarim Basin Oil Field shows the presence of “Ⅰ” and “Ⅲ” curve types of AE curves for sandstone and mudstone and “Ⅰ” type for dolomite,limestone and basalt in the area.