摘要
陆相断陷盆地中,地层水中离子的运移、聚集过程比较复杂。在同一沉积体系的地质剖面上,地层水的化学特征既受控于沉积环境又受控于沉积后的成岩作用、构造运动,还与盆地中油气的生、聚、运、散有着密切的关系。油层中地层水的化学特征可能等同于邻近水层的化学特征,也可能与之完全不同。这取决于成藏动力的构成情况及地层水与其宿主岩的形成时间。因此,在陆相油藏测井解释含油饱和度工作时,对于地层水电阻率的选取不能仅参照邻近水层的资料,应考虑源于烃源岩的油、气、水的运移情况,并且不同的成藏模式有不同的取值方法。
The process of migration and accumulation of ions in formation water was very complex in continental down-faulted basin.The chemical features of the formation water on the geologic section of the same sedimentary system were controlled not only by sedimentary envi-ronment but also by post-depositional diagenesis,tec-tonic movement,and had close relationship with gener- ation,accumulation,migration,loss of hydrocarbon in the basin.The formation water in oil layer may have the same chemical features as the neighboring water lay-ers, or in contrast with each other.It depends on the composition of reservoir-forming power and the formed time of the formation water and it's host rocks. So,when well log interpretating oil saturation in the continental oil reservoirs,selecting resistivity of the for-mation water should not only reference the data of neighboring water layers',but consider the migration of oil, gas and water in source rocks.Different reservoir forming patterns have various methods of value gai-ning.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2005年第5期5-7,共3页
Petroleum Geology and Recovery Efficiency
关键词
陆相断陷盆地
地层水
流体压力封存箱
油气运移
含油饱和度
测井解释
continental downfaulted basin,formation water,hermetic box of fluid pressure,oil and gas migra-tion,oil saturation,well logging interpretation
