摘要
CO_2吞吐是开发低渗透油田的有效方法之一,但进行CO_2吞吐前目标井的优选是关键步骤,它直接关系到CO_2吞吐措施的成败.首先分析了剩余油饱和度、油井含水率、油层厚度、渗透率、孔隙度、井底流压各因素对CO_2吞吐效果的影响,从而建立评价指标,然后利用层次分析方法确定各单因素的合理权重,最后根据模糊综合评判法优选出树11Y68-57和树11Y67-611两口油井适宜CO_2吞吐.优选出的油井具有良好的的油效果,表明该方法是正确可行的,具有一定的推广价值.
CO2 huff and puff is one of the effective methods to develop the low permeability oil fields.But the preference of target wells before conducting CO2 huff and puff is the key step,since it is directly related to the success or failure of CO2 huff and puff measures.The influence of various factors such as remaining oil saturation,water cut,reservoir thickness, permeability,porosity and flowing bottom hole pressure on the effect of CO2 huff and puff is analyzed firstly in this paper so as to establish an evaluation index.And then analytic hierarchy process（AHP） is used to determine a reasonable weight of single factor.And finally,two oil wells,Shu 11Y68-57 and Shu 11Y67-611,are optimized for CO2 huff and puff according to the fuzzy comprehensive evaluation method.The two wells optimized have a better effect of improving oil,which shows that the CO2 huff and puff technology is feasible and has a certain generalized value.
出处
《数学的实践与认识》
CSCD
北大核心
2010年第21期113-118,共6页
Mathematics in Practice and Theory
基金
黑龙江省自然科学基金项目(E200902)
黑龙江省研究生创新科研资金项目(YJSCX2009-093HLJ)
关键词
CO2吞吐
油井
低渗透
模糊综合评判
CO2 huff and puff
oil well
low permeability
fuzzy comprehensive evaluation
