海石湾矿风井井筒含油气岩层突出危险性预测

Predication of Outburst Danger of Rock Stratum Containing Oil and Gas

为了预防砂岩突出，通过实验室测定了油气岩石的力学性质、岩石成分、显微结构、油气含量及透气系数，现场测定了片状岩芯的比例、钻孔变形、油气压力、油气岩石排放半径以及钻孔内油气排放量等． 根据上述多方面的测定结果，综合判断岩石突出的危险程度，为预防岩层突出提供了参数．

For the purpose of preventing outburst in sandstone, a laboratory test was carried out to determine the mechanical properties, composition, microscopic structure, gas content and permeability coefficient of rock. The ratio of schistose core, deformation of borehole, fuel gas pressure, and radius of outburst and outburst intensity of oil and gas from borehole were tested in the field. As a result, the danger degree of outburst can be determined, which provides the parameters for outburst prevention.