实验测定低渗透储层最小启动压力梯度的应用  

APPLICATION OF EXPERIMENTALLY DETERMINED MINIMUM STARTING PRESSURE GRADIENT OF LOW-PERMEABILITY RESERVOIR

作　　者：石京平[1] 邵先权[2] 马继红[3] 张小雷[1] 杨晓东[1] 曹维政[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]大庆油田有限责任公司第二采油厂,黑龙江大庆163414 [3]大庆油田有限责任公司第四采油厂,黑龙江大庆163511

出　　处：《大庆石油地质与开发》2010年第5期81-83,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家自然科学基金项目（50634020）资助.

摘　　要：在总结低渗透油藏流体渗流特点的基础上,设计了＂非稳态驱替-毛细管计量法＂测定流体流动的最小启动压力,实验测定了水单相渗流的最小启动压力梯度以及水驱油、氮气驱油和空气驱油的最小启动压力梯度.通过对比指出,对于同一低渗透油藏,空气驱油所需要的最小启动压力梯度小于氮气和水的最小启动压力梯度,油藏可以考虑注空气开发.On the basis of summarizing the fluid flow characteristics of low-permeability oil reservoirs, ＂ nonsteady driving-capillary metering method＂ is designed to determine the minimum starting pressure of fluid flow, the minimum starting pressure gradients of single water-phase flow, water drive, N2 and air flooding are measured experimentally. Through contrasts, for the same low-permeability oil reservoir, the needed minimum starting pressure gradient for air flooding is less than the rest, so the air injection development can be considered for this kind of oil reservoir.

关 键 词：低渗透 非达西渗流 最小启动压力 测定方法 

分 类 号：TE312[石油与天然气工程—油气田开发工程]