摘要
长期注水冲刷会引起储集层物性和流体物性的变化。以胜坨油田胜二区沙二段74 -81 单元为研究对象,建立该开发单元储集层物性和原油物性随不同开发阶段变化的时变油藏地质模型,研究开发阶段变化对剩余油分布和开发效果的影响。研究结果表明,渗透率场、原油黏度和密度随不同开发阶段的变化对剩余油分布和油田开发效果影响均较大,尤其是原油物性变化的影响更为严重。通过精细油藏数值模拟,得到目前74 -81 单元的剩余油分布规律和水淹状况,设计了该单元开发调整方案,成功地指导了油藏开发调整。
Long-term water flooding would result in the variation of reservoir characteristics and crude properties. The time-variant model of unit 71-81 of Region 2, Shengli Oilfield, with reservoir characteristics and crude properties varying with the development of the unit, is established and the influence of development stage on remaining oil distribution and development efficiency is studied with reservoir simulation. The result shows that variation of permeability, crude viscosity and density, especially the variation of crude properties, strongly influences remaining oil distribution and recovery. The fine reservoir simulation of the unit 71-81 is carried out to determine the remaining oil distribution and water-out situation.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2005年第2期91-93,共3页
Petroleum Exploration and Development
关键词
时变油藏地质模型
数值模拟
剩余油分布
开发调整
time-variant reservoir model
reservoir simulation
remaining oil distribution
modification scenario
