摘要
辽河油田W38块东二段直井开发存在油井低产液、普遍高含水等问题,断块长期低速开采。利用测井解释、岩心分析、数值模拟及动态分析等技术手段,揭示了区块为含有可动水的低含油饱和度油藏。从油气运移及成藏机理出发,研究了油藏低含油饱和度的成因。按照分层开发的技术思路,利用水平井技术提高单井产量,累计实施水平井20口,区块产量由3.2万吨上升至6.7万吨,采收率提高7.8%,大幅度改善了W38块东二段低含油饱和度油藏的开发效果。
Since several problems of vertical well development exit in Dong2 member of W38 block in Liaohe oilfield, such as low fluid production and widespread high water cut, fault block mining is at low speed for a long time. By using methods of logging inter？pretation, core analysis, numerical simulation and dynamic analysis, etc, it is confirmed that Dong2 member belongs to low oil satu？ration reservoir. Formation reasons of the low oil saturation reservoir is researched by analysing oil-gas migration and accumulation mechanism. According to the idea of layering development, horizontal well technology is used to improve single well production, meanwhile, fault block production increases from 32 000 tons to 67 000 tons through the implementation of 20 horizontal wells, and the final recovery improves 7.8 %, thereby greatly improving the development effect of low oil saturation reservoir.
出处
《油气藏评价与开发》
CSCD
2015年第4期38-41,共4页
Petroleum Reservoir Evaluation and Development
关键词
低含油饱和度油藏
水平井
分层开发
提高采收率
low oil saturation reservoir
horizontal well
layering development
recovery enhancement
