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本文介绍一种室内测定岩石在地层中三向应力分布的新方法,并用此方法对大庆喇嘛甸油田的喇7-261井900米深处的钻井岩心进行了测定。将得出的三向应力值,用来计算水力压裂破裂梯度及判断裂缝形态,其结果与现场资料吻合较好。
This paper presents a new method for measuring the three-dimensional stress distribution of rock in the formation by using this method. The drilling core at 900 meters deep in La 7-261 well of Daqing Lamadian Oilfield is measured by this method. The three-direction stress values to be obtained are used to calculate the fracturing gradient of hydraulic fracturing and to determine the fracture morphology. The results are in good agreement with the field data.