摘要
经典Archie公式解决了测井数据的定量计算问题,但是,Archie公式只能用于孔隙结构相对简单的储层.面对日益复杂的油气勘探对象,Archie公式的计算精度受到一定的限制.本次研究,应用球管模型方法,针对不同孔隙结构研究了岩石饱和盐水及饱和油气时的导电性质,得到了不同孔隙结构、具有不同流体饱和度时岩石导电性的数值模拟结果.本次研究的数值模拟结果证明岩石孔隙结构是导致岩电实验数据发散现象的因素之一,对比孔隙结构不同而饱和度相同岩石的导电性质,证明复杂孔隙结构是形成低电阻油层的重要因素.
The classic Archie＇ s Laws give solutions in quantitative logging analysis. Unfortunately, only in the reservoir with simple pore structure the Archie＇s Laws are suitable. For many complex reservoirs appearing in oil exploration, the classic Archie＇ s Laws fail to provide right oil saturation in logging analysis. Based on the Sphere-Cylinder Model, in this paper we study rock resistivity and obtain the numerical simulation result for different pore structures and oil saturations. By means of the numerical simulation and analysis, we conclude that pore structure is the principal factor to cause experimental data scatter. After comparing the rock resistivity of different pore structures but the same oil saturation, we confirm that the complex pore structure leads to the low resistivity in oil-bearing zone.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第8期2818-2826,共9页
Chinese Journal of Geophysics
基金
国家863计划(2006AA06Z214)
中国石油集团公司研究项目(2011B-4000)
油气藏地质与工程国家重点实验室开放基金(PLN1101)的联合资助
关键词
孔隙结构
阿尔奇公式
电阻定律
测井评价
饱和度
数值模拟
Pore structure, Archie＇s laws, Resistance law, Logging evaluation, Numericalsimulation numerical simulation
