摘要
适用于海上低渗透油田开发特点的分类标准是储层渗透率为10～50mD之间的油田为低渗透油田．5～10mD之间的储层为特低渗透油田，小于5rod的储层为超低渗透油田。同时海上低渗透油田注入水的水质很重要．必须与地层水配伍。影响海上低渗透油田开发效果的因素包括两个方面：宏观方面主要是构造和沉积特征．微观方面主要是由于孔喉结构、喉道大小和分布、矿物成分等的差异存在不同的渗流特征，以上两个方面共同决定了海上低渗透油田的开发效果。
The classification standard suitable to the development characteristics of offshore low-permeability oilfields is as following： reservoirs with permeability of 10-50roD belong to low permeability ones; reservoirs of 5-10mD belong to extra-low permeability ones; reservoirs of lower than 5mD belong to ultra-low permeability reservoirs. Meanwhile, the quality of the water injected into the offshore low-permeability oilfields is important, and the water must be compatible to the stratum water. The factors influencing the development effect of the offshore low-permeability oilfields include two factors： structure and sediment characteristics in macro aspect, and different transfilsion characteristics caused by differences of bore throat structures, bore throat sizes and distribution, mineral contents, etc., in the micro aspect. The two aspects together decide the development effect of the offshore low-permeability oilfields.
关键词
海上
低渗透油田
分类标准
孔喉结构
喉道半径
offshore
low-permeability oilfield
classification standard
pore structure
throat radius
