摘要
W气田珠海组储层埋深大,单层厚度较薄,渗透性差。分析认为储层低渗原因主要为压实作用、胶结作用及钻完井过程中的储层污染。针对储层特点,优选了酸化及压裂改造措施进行室内试验及模拟。认为初期水平井生产,应用10%HCl+2%HF的酸液进行酸化解堵,生产后期进行储层压裂改造可有效提高单井产能。
Reservoirs in Zhuhai Formation of W Gas Field were deeply buried,single layer was thin and permeability was poor.Analysis shows that the low permeability reservoirs are caused by compaction,cementation,and reservoir pollution in the process of drilling and completion.According to the reservoir characteristics,measures of acidification and fracturing are chosen for laboratory experiment and simulation.It is considered that horizontal wells are used for production at initial stage,hydrofluoric acid ratio is 10%HCl+2%HF acid used to dissolve the plugging,at the late stage of fracturing reconstruction can effectively increase the single well productivity.
出处
《石油天然气学报》
CAS
CSCD
2013年第4期36-39,49,共5页
Journal of Oil and Gas Technology
关键词
珠海组
低渗储层
压实作用
胶结作用
酸化
压裂
Zhuhai Formation
low permeability reservoir
compaction
cementation acidification
fracturing
