前言在勘探初期,由于我们不认识工区的地质特点,对断层抱着不以为然的态度。对出现的断层既没有实践经验,更没有深刻认识,只是搬用外地经验,认为所有断层均为高角度的陡断层。断层对油气的作用也不很明确。通过一阶段钻探实践,断层任寻找油气藏过程中的影响愈来愈明显了,打井时常常钻遇断层而断缺了含油目的层,同时出现忽 Foreword In the early stage of exploration, we did not agree with the fault because we did not know the geological characteristics of the work area. There is neither practical experience, nor profound understanding of the faulting that has occurred. Instead, we use the field experience and consider all the faults to be steep faults at high angles. The role of fault on oil and gas is not clear. Through the practice of one-stage drilling, the influence of faults searching for oil and gas reservoirs has become more and more obvious. During the well drilling, faults are often drilled to break the oil-bearing target layer,