摘要
对于低矿化度地层水、浊流相沉积,无统一油水界面、岩性复杂的砂泥岩地层,当用盐水泥浆钻井时,虽以岩心分析资料为基础,用岩石物理学的观点,应用统计方法确定岩性、物性、含油性与测井响应关系,求出孔隙度、渗透率、束缚水饱和度等地质参数值,但测井解释结论与试油结果比较,符合率仍低。本文除了采取上述方法外,还通过求出完井测井时目的层的混合液电阻率,计算出较合理的含油饱和度数值,基本上解决了高尚堡地区盐水泥浆复杂砂岩储集层的评价问题。
This paper deals with the log interpretation problems of turbidite sand reservoirs with low formation water salinities, continuously changed lithologies and multi-water-oil contacts in a well drilled with salt water-based mud. Conventional statistics techniques were used, from the view points of petrophysics, to determine relations between logging response and lithology and between physical property and saturation of the reservoir for an estimation of geological parameters such as porosity, permeability and irreducible water saturation in those conditions, conclusions from log interpretation don't agree well with those from laboratory test. A new method has been proposed and a resonable oil saturation has been computed by estimating mixed fluid resistivity of potential zone in the logged interval. This technique basically solves the reservoir evaluation problem in salt water based mud. This technique is used in penetrating complex lithology.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1991年第3期78-84,共7页
Petroleum Exploration and Development
