摘要
基于典型注采条件下的渗流模型,在分析一注一采渗流场分布特点的基础上,通过研究注采井间压力、压力梯度的变化规律,提出了实现水驱开发有效驱替的条件,并建立了注采单元内流体可驱动面积的计算方法。利用本文建立的方法,结合油田实例进行计算分析,通过研究注采单元中驱替压力梯度与有效驱替范围的变化关系,确定了普通稠油油藏水驱开发的有效注采井距,结果表明本文方法具有良好的操作性,可以指导普通稠油油藏水驱开发注采井距的合理部署。
Based on a percolation model under the typical injection-production conditions and an anal- ysis of distribution characteristics of the seepage field between an injector and a producer, the conditions of effective displacement during waterflooding development were presented and the approach to calculate the drainable area in a flooding unit was established for ordinary heavy-oil reservoirs, by investigating the changes of injector-producer pressure and pressure gradient. Using this method and combining with the calculations and analysis for oilfield examples, the changes in the relationship between displacement pressure gradient and effective displacement area were researched and the effective injector-producer spacing during water-flooding development was determined for ordinary heavy-oil reservoirs. It has been indicated that this method is quite operable and can be used to direct the determination of effective injector-producer spacing during water-flooding development of ordinary heavy-oil reservoirs.
出处
《中国海上油气》
CAS
CSCD
北大核心
2014年第4期50-53,58,共5页
China Offshore Oil and Gas
基金
"十二五"国家科技重大专项子课题"西非深水油田注采优化及高效开发模式研究(编号:2011ZX05030-005-05)"
中国石油大学(北京)科研基金"大井距注采井网有效驱替规律研究(编号:KYJJ2012-02-03)"部分研究成果
关键词
普通稠油油藏
水驱开发
压力梯度
有效驱替
注采井距
ordinary heavy-oil reservoir
water flooding development
pressure gradient
effective displacement
injector-producer spacing
