地层电性质研究与电测井方法进展·之一 油层电性质研究与电法测井解释方法的进展

Study Progress of Formation Electrical Property and Electric Logging Interpretation Method

文章简要回顾了20世纪90年代以前的电测井解释方法,概括介绍了近十年中国石油集团针对低幅度油藏—低电阻油层与前白垩系特低渗透砂岩油层电性质研究及电法测井解释方法的进展,包括中浅层泥质砂岩黏土附加导电、钻井液侵入油、水层双侧向与双感应测井的响应研究、复杂孔隙类型的特低渗透砂岩电性质研究以及各类油藏的测井饱和度—电阻率分布规律研究进展等。这些研究和进展表明近十年中国石油勘探中电测井评价油层(藏)的重要作用。

This paper reviews the electric logging interpretation method that had been used before 1990's and introduces the study progress of PetroChina made in formation electrical property and electric logging interpretation method of low amplitude reservoir-low resistivity pay and preCretaceous extra low permeability reservoir in the last decade.The progress includes clay additional electric conductivity in shaly sand,the influence of drilling mud invasion on response of dual lateral log and dual induction log,electric property of complex pore types and extra low permeability reservoir,and distribution law of logging saturation-resistivity in various reservoirs.The study progress indicates that the electric logging is an important method in reservoir evaluation.