超稠油油藏注氮气辅助蒸汽吞吐数模研究  

Numerical simulation of nitrogen assisted cyclic steam stimulation for super heavy oil reservoirs

作　　者：于会永[1] 刘慧卿[2] 张传新[1] 雷旭东[1] 谢寿昌[1] 

机构地区：[1]中油新疆油田公司,新疆克拉玛依834000 [2]中国石油大学,北京102249

出　　处：《特种油气藏》2012年第2期76-78,139,共3页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"热力开采后稠油油藏提高采收率技术"(2009ZX05009-004-05)部分内容

摘　　要：超稠油油藏蒸汽吞吐后期,油汽比低,周期含水量高,开采效果差,注氮气辅助蒸汽吞吐已经成为1种提高超稠油开采效果的有效手段。与常规稠油油藏不同,超稠油对于注氮参数以及筛选条件有更严格的限制。模拟研究得知,超稠油油藏蒸汽吞吐不同时期宜采用不同的注氮模式。因该类型油藏对原油黏度、油层厚度、采出程度敏感性较强,从而确定超稠油油藏选井标准。该研究对同类油藏注氮辅助蒸汽吞吐开采具有指导意义。In the late life of cyclic steam stimulation for super heavy oil reservoirs,oil-steam ratio is low,water cut is high,and recovery effect becomes poor.Nitrogen assisted cyclic steam stimulation has become an effective way to improve super heavy oil recovery.Different from conventional heavy oil reservoirs,super heavy oil reservoirs are more stringent in regards to nitrogen injection parameters and screening conditions.Numerical simulation shows that different nitrogen injection measures should be adopted at different stages of cyclic steam stimulation.Super heavy oil reservoirs are more sensitive to oil viscosity,reservoir thickness and recovery percent,thereby well screening criteria can be determined for super heavy oil reservoirs.This study has guiding significance to nitrogen assisted cyclic steam stimulation in similar reservoirs.

关 键 词：蒸汽吞吐 注氮气 数值模拟 超稠油油藏 红山嘴油田 

分 类 号：TE345[石油与天然气工程—油气田开发工程]