【摘要】 介绍了差应变分析法(DSA)原地应力测量技术原理,并采用此法对河南省洛阳—伊川盆地屯1井岩样进行了测试,结果显示该井1153.4～1167.8 m处最大水平主应力为北西向(141°—157°),与钻孔崩落椭圆长轴方位统计得到的最大水平主应力方向一致;最大水平应力数值小于铅直应力,属于正断层应力状态;主应力随深度线性增大。对该区域注采井网布局给出了建议,即本区注采井网布设应避免与141°—157°方向平行。更多还原

【Abstract】 The principle method of the Differential Strain Analysis technique is briefly recommended.We tested the rock samples taken from the Well Tun-1 which was located in Luoyang-Yichuan basin in Henan Province.The results shows that the maximum horizontal principal stress is NW orientation(141°—157°) in the well of 1153.4~1167.8 m,which is consistent with the maximum horizontal principal stress orientation of the drill collapsing ellipse macro axis.Its value is less than vertical stress,and belongs to normal fault stress.The principal stress increases with depth linearity.Advice for the injection-production well pattern in this area is given,that is the pattern shall not parallel to 141°—157° orientation.更多还原