大芦湖油田氮气驱提高厚层低渗透油藏采收率先导试验  

Pilot test of nitrogen flooding to improve oil recovery from thick low permeability reservoirs in the Daluhu oilfield

作　　者：董平志[1] 

机构地区：[1]中石化胜利油田分公司,山东淄博256303

出　　处：《特种油气藏》2011年第2期104-106,141,共3页Special Oil & Gas Reservoirs

基　　金：中石化股份公司"低渗透油藏注气提高采收率先导试验"(P07087)

摘　　要：胜利油区低渗透油藏大多已进入注水开发中后期,开采效果越来越差,急需转变开发方式。在进行室内精细研究基础上,优选大芦湖油田樊29块作为试验区,开展厚层低渗透油藏氮气驱先导试验。氮气具有易获取、密度较低、压缩性较好、腐蚀性小等优点。经过优化试验方案、矿场施工、深入分析后认为,氮气驱是一项能较好改善厚层低渗透油藏开发效果的先进技术,具有较好推广价值。Most of the low permeability reservoirs in the Shengli oilfield have entered the middle or late life of water flooding,the production effect is getting worse,and it is urgent to convert development scheme.Based on fine laboratory study,a pilot test of nitrogen flooding has been conducted for thick low permeability reservoirs with the Fan 29 block in the Daluhu oilfield as test area.The advantages of nitrogen are easy access,low density,good compressibility,and small corrosion,etc.It is concluded through test program optimization,field operation and in-depth analysis that nitrogen flooding can better improve the development result of thick low permeability reservoirs,and is worth spreading.

关 键 词：厚层低渗透 氮气驱 采收率 先导试验 大芦湖油田 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程] TE348