摘要
通过深入分析低渗储层在钻井过程中发生的特有“低侵现象”，首次引入了侵入系数“T”的概念，并对泥浆的侵入程度进行定量化表征，结合低渗储层岩心实测渗透率值与“侵入系数”关系，建立了一套针对低渗层渗透性（0．01～10mD范围内）的随钻电阻率测井快速评价图版，从而达到钻进过程中对低渗储层渗透性的快速定量化评价。该方法在实际应用过程中表现出很好的应用效果，对指导现场实际勘探作业起到了极大的意义。
Shallow invasion in low permeability reservoirs was observed in drilling,the concept of'T'coefficient was first introduced,and it was used for quantitative characterization of the degree of mud invasion.In combination with the measured core value of the low permeability reservoirs and relation of the invaded coefficient,a set of chart boards were established for a quick evaluation of resistivity for low-permeability(0.01~10mD)reservoirs while LWD,by which a quick and quantitative evaluation of permeability of low-permeability reservoirs was implemented in drilling.The method is applied in well drillings and good effect is obtained in application,it is of great significance in actual exploration.
出处
《长江大学学报（自科版）（中旬）》
CAS
2015年第3期74-77,7,共4页
Journal of Yangtze University(Nature Science Edition)
关键词
低渗储层
随钻电阻率测井
渗透性
定量评价
low-permeability reservoir
LWD resistivity logging
permeability
quantitative evaluation
