摘要
束缚水饱和度是储层含油气性识别、水淹层识别、储量参数评价的关键参数,通常采用岩心岩石物理实验获取.为利用测井资料获取较为准确的束缚水饱和度,以元素测井为基础,通过k_Lambda渗透率模型计算储层渗透率,进而结合Coates-Timur模型,通过公式推导得到束缚水饱和度计算模型,利用岩心实验数据采用多元线性回归法标定模型参数,使得模型具有普遍适用性,实现测井资料束缚水饱和度精确计算.应用效果表明,该方法计算的束缚水饱和度在渤海油田复杂岩性饱和度评价、水淹层评价、低电阻率油层饱和度评价中取得了较好应用效果.
Bound water saturation is an important indicator for identifying oil layers,water-flooded layers and evaluating reserves.It is usually estimated through core petrophysics experiments.In order to obtain more accurate bound water saturation with logging data,this paper firstly uses a k_lambda permeability model based on ECS to calculate reservoir permeability,then estalishes a bound water saturation model by considering the Coates-Timur model,and finally calibrates the model parameters with core experimental data by the multivariate linear regression method to make it universal and estimate accurate bound water saturation based on logging data.Applications show that the bound water saturation calculated by the new method is satisfactory in evaluating the saturation of complex lithologic reservoirs and low-resistivity oil layers,and water flooded layers in Bohai oilfiedl.
作者
李鹏
LI Peng(China Oilfield Services Limited,Tianjin 300459,China)
出处
《测井技术》
CAS
2019年第6期592-596,共5页
Well Logging Technology
基金
“十三五”国家科技重大专项“大型油气田及煤层气开发”课题“深水深层高温高压测井技术系列”(2017ZX05019-003)部分研究成果
关键词
测井解释
元素测井
束缚水饱和度
渗透率
水淹层
复杂岩性
低电阻率油层
logging interpretation
ECS logging
bound water saturation
permeability
waterflooded formation
complex lithology
low-resistivity oil layer
