大庆石油地质与开发2012，Vol.31Issue(6)：59-63,5.DOI:10.3969/J.ISSN.1000-3754.2012.06.012
中高渗砂岩油藏水驱后储层参数变化规律
CHANGED LAWS OF PARAMETERS AFTER WATER FLOODING FOR MEDIUM-HIGH-PERMEABILITY SANDSTONE OIL RESERVOIRS
摘要
Abstract
Through the core analyses in Chaheji Oilfield, the parameters are significantly influenced by the water flooding for medium-high-permeability sandstone reservoirs: the porosity and permeability values increase with the multiples of the water flooding, but the former changes a little, and the latter is on the contrary; the larger primary values are, the more obviously increased after the flooding, this conditions reflect that the injected water drives forward along high-capacity pores and channels, thus the influence on the channels are the most obvious; after the flooding, the fallowings changed are shown; the increases of surface pore ratio, pore volume and throat radius and furthermore the decreases of the shale and other matrices' contents, drainage pressure and saturation median pressure ; due to the enhancement of the flow ability after ther flooding, the high-capacity channels are prone to result in predominant filtering channels, thus the water can easily advance along the channels, and the swept volume and oil flooded efficiency are finally influenced. Therefore it is necessary to take technical measures of deep profile control and so on to block the generated preferential channels and improve the effects of the water flooding.关键词
砂岩油藏/水驱/储层参数/孔隙度/渗透率/孔隙结构Key words
sandstone oil reservoir/ waterflooding/ reservoir parameter/ porosity/ permeability / pore structure分类
能源科技引用本文复制引用
杨满平,张淑婷,刘继霞,孙长红,于成杰..中高渗砂岩油藏水驱后储层参数变化规律[J].大庆石油地质与开发,2012,31(6):59-63,5.基金项目
国家自然科学基金项目资助(50804041). （50804041）
