摘要
大量低渗透油藏开发实践表明，油井见水情况与储层物性及裂缝性质有关。以BYS长4＋5油藏为例，从单井生产数据着手．通过井间注采对比、井间示踪剂测试和油水井连通关系分析，总结出4种含水变化类型及分布规律。从裂缝成因、构造应力场和沉积环境方面分析总结了不同见水特征的成因。
Lots of low-permeability oil reservoirs development practices show that water breakthrough situation in oil wells is related to the reservoir properties and fracture nature. Taking BYS Chang4＋5 reservoirs as examples, starting with individual well production da- ta, four kinds of water-cut variation types and distribution laws are summed up through contrast of injection and production between wells, interwell tracer test and analysis of producer-injector communication relations. Various reasons of water-breakthrough characteristics are analyzed and summarized from the fracture formation causes, tectonic stress field and sedimentary environment.
关键词
特低渗透
BYS
裂缝
连通性
见水特征
extra-low permeability
Baiyushan area
fracture
connectivity
water breakthrough characterristics
