超低流度油藏水驱和聚合物驱特征实验  

EXPERIMENTS ON THE WATER AND POLYMER FLOODED CHARACTERISTICS FOR THE ULTRA LOW-MOBILITY OIL RESERVOIRS

作　　者：张博为[1] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318

出　　处：《大庆石油地质与开发》2015年第3期114-119,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份公司重大科技专项"大庆探区非常规油气勘探开发关键技术研究与现场试验"(2012E-2603)

摘　　要：为研究流度低于1.0μm^2/(Pa·s)超低流度油藏的驱油特征,采集杏树岗油田研究区水驱和聚合物驱检查井油砂样品44件进行实验。结果表明:水驱中黏油、低黏油、高黏油、普通稠油体积分数分别为55.0%,31.8%,9.1%,9.1%,聚合物驱巾黏油、低黏油体积分数分别为59.1%,40.9%;水驱见效井段的流度大于0.078μm^2/(Pa·s),不见效的小于0.054μm^2/(Pa·s),不一定见效的为0.054~0.078μm^2/(Pa·s);聚合物驱见效井段的流度大于0.011μm^2/(Pa·s),不见效的小于0.003μm^2/(Pa·s),不一定见效的为0.003~0.011μm^2/(Pa·s);水驱和聚合物驱驱油效率与流度、渗透率都呈对数显著正相关,水驱驱油效率与剩余油黏度呈对数显著负相关,聚合物驱驱油效率与剩余油黏度呈曲线显著相关。研究成果为杏树岗油田及同类油藏剩余油有效开发提供了重要依据。In order to study the flooded characteristics of the ultra low-mobility （less than 1.0 μm2/ （Pa · s）） oil reservoirs,44 oil-sand samples are collected in the water and polymer flooded inspection wells of Xingshugang Oilfield.The experimental results show that the medium,low,high,common heavy viscosity oil volume fractions are 55.0％,31.8％,9.1％,9.1％ respectively in the water flooding experiment,while the medium and low viscosity oil volume fractions are 59.1％ and 40.9％ in the polymer flooding test;for the former flooding,the mobility in the affected well intervals is more than 0.078 μm2/ （Pa · s）,less than 0.054 μm2/ （Pa · s） for the uninfluenced sections and 0.054-0.078 μm2/ （Pa · s） for the possibly influenced intervals;for the polymer flooding experiment,the values are correspondingly 0.011 μm2/ （Pa · s）,0.003 μm2/ （Pa · s） and 0.003-0.011 μm2/ （Pa · s）;the water and polymer flooded displacement efficiencies are obviously,positively and logarithmically correlated with the mobility and permeability,while the water-flooded displacement efficiency is on the contrary with the viscosity of the remained oil versus the polymer-flooded displacement efficiency.The research achievements have provided the important evidences for the effective development of the remained oil in Xingshugang Oilfield and the same kind of reservoirs.

关 键 词：超低流度油藏 杏树岗油田 水驱 聚合物驱 驱油效率 剩余油黏度 含油饱和度 

分 类 号：TE357[石油与天然气工程—油气田开发工程]