以野外、室内岩心观测和声波测井资料的预测为基础 ,研究了牛 2 0断块Es3 中a～f砂层组储层裂缝性砂岩压裂时的一般破裂规律及储层天然裂缝对压裂裂缝特征的影响 .结果表明 ,储层天然裂缝在压裂过程中的表现取决于应力场的应力差、岩石抗张强度、裂缝的抗张强度及裂缝的平面走向等因素 ,确定了压裂时活动区域的条件和范围 ,从而 ,为油田开发调整提供了重要依据 . Based on the prediction of field, indoor core observation and sonic log data, the general failure law of fractured sandstone fractures in reservoirs a ~ f of Block Es3 in Block Ni30 and the influence of natural fractures on pressure The results show that the performance of natural fractures in fracturing process depends on factors such as stress difference of stress field, tensile strength of rock, tensile strength of fractures and plane direction of fractures, When the activities of the conditions and scope of the region, thus, provides an important basis for the development of oil field adjustment.