史深100块现今地应力测试研究

摘要

本文以史深100块为例，通过选取典型全直径岩心样品，结合当前主流测试技术对现今地应力进行系统测试分析。研究结果表明：受太平洋板块俯冲作用影响，史深100块现今水平最大主应力平均方位为NE77°，大小78MPa，梯度值0.023MPa/m；水平最小主应力平均方位为SE167°，大小54MPa左右，梯度值0.017MPa/m。%Stress testing analysis on Block Shishen-100 is carried out by selecting typical full diameter core samples with the help of the mainstream testing technologies. The results show that the maximal horizontal principal stress in Block Shishen-100,which is influenced by underplating of the Pacific Plate,is 78MPa with the position of NE77° and the average stress gradient value is 0.024MPa/m;while the minimal horizontal principal stress is 54MPa with SE167° and the average stress gradient value is 0.017MPa/m.