摘要
由于钻井技术的进步和水平井的广泛实施,需要有更多、更先进的水平井导向方法和水平井导向技术去满足现场需要。水平井地质导向的根本任务就是提高水平井的钻遇率,尤其是提高水平井的有效钻遇率,但由于储集层中泥岩等夹层的存在,一旦钻入夹层,将会降低有效钻遇率。介绍了有效储集层的概念,对夹层进行分类分析,研究夹层对水平井的影响;同时,通过实例阐述现场录井导向对夹层的识别方法和对轨迹的合理调整,提出目前水平井导向存在的问题。
As the progress of drilling technology and the wide use of horizontal wells,more and more advanced horizontal well orientation technologies are needed to meet wellsite demand.The basic task for geologic orientation of horizontal wells is to increase drilling catching rate,especially to increase the effective drilling catching rate of horizontal wells,but as clay stone intermediate layers are existed in reservoirs,once the intermediate layers are drilled into,the effective drilling catching rate will be decreased.The paper introduced the concept of the effective reservoir,analyzed the classification of the intermediate layers,studied the influences of intermediate layers on horizontal wells,and meanwhile pointed out the existed problems at present horizontal well orientation by describing the distinguishing way of intermediate layers during wellsite geologic orientation and the reasonable adjustment on well track through examples.
出处
《录井工程》
2009年第3期25-29,共5页
Mud Logging Engineering
关键词
录井
地质导向
水平井
储集层
有效钻遇率
夹层识别
轨迹调整
mud logging,geologic orientation,horizontal well,reservoir,effective drilling catching rate,intermediate layer distinguishion,track adjustment
