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辽北张强地区晚侏罗世以来经历了4期主要构造运动:燕山早中、晚中、晚期和喜马拉雅晚期,通过声发射(AE)法测得相应4期的最大主应力值分别为106.2MPa、87.3MPa、57.1MPa及33.4MPa,同时还测得现今地应力最大主应力值为17.4～23.3MPa。发现有岩浆活动的构造运动期古应力最大主应力值偏大。油田内含油构造和出油井现今地应力最大主应力值偏低。本区油气成藏期古应力状态的最大主应力值是87.3MPa。
The main tectonic movement in Zhangqiang area of northern Liaoning Province since late Jurassic has been characterized by four main tectonic movements: the early, middle, late, and late Himalayas in Yanshan. The maximum principal stress values of the corresponding four phases measured by acoustic emission (AE) , 87.3MPa, 57.1MPa and 33.4MPa, respectively. At the same time, the maximum principal stress value of the present earth stress is 17.4 ~ 23.3MPa. It is found that the maximal principal stress value of ancient stress during tectonic movement with magmatic activity is larger. The maximum principal stress value of in-situ stress in oil-bearing structures and outflow wells in the field is low. The maximum principal stress value of ancient stress state during oil-gas accumulation period in this area is 87.3MPa.