摘要
低阻油层,即油层的电阻增大率小于2,近年来,低阻油层作为老油田挖潜和新增储量的目标之一倍受人们的关注。本文在前人的研究基础上,从高含量束缚水、粘土附加导电、地层水矿化度、泥浆侵入和砂泥岩间互层等五个方面阐述了低阻油层的成因机理,并分析了各种低阻油层测井识别方法的优势和局限性,这些方法在不同类型的低阻油层的识别和评价中均取得了良好效果。
Low-resistivety layer is a layer whose resistivity index is less than 2. In recent years, low-resistivety layer attracted a great deal of attention as one of the objectives of developing the latent power of old oil field and increasing new reserves. In this paper,based on previous studies, the genetic mechanism of low-resistivety layer were analyzed from the high content of bound water, clay additional conductive, formation water salinity and drilling mud invasion. The advantage and disadvantage of identification methods of low- resistivety layer are reviewed. These methods have successfully satisfied evaluation and identification of low-resistivity formation in different types and fields.
出处
《工程地球物理学报》
2008年第1期48-53,共6页
Chinese Journal of Engineering Geophysics
关键词
低阻油层
成因机理
测井
识别方法
low-resistivity layer
genetic mechanism
well logging
identification method
