摘要
与常规射孔方式不同,水力喷射钻孔可针对储层有利部位实现定向喷射,以高压水射流钻孔的方式在油层与井筒间形成长度为100m微井眼。利用水力喷射钻孔孔眼的导向作用,继续实施水力压裂改造工艺,在压裂目的层中形成深穿透人工裂缝,以达到储层高效改造的目的。介绍了该技术的工艺原理及实施步骤,结合辽河油区的储层特点,优化了工艺关键参数,提出了火山岩改造的针对性措施,在辽河东部凹陷的探井中成功实施了"水力喷射定向深穿透压裂技术",获得高产工业油流。水力喷射定向深穿透压裂技术在国内应用尚属首次,为火山岩以及其他难动用储层改造开拓了一条新的思路。
Unlike the conventional perforation,advantage zone of reservoir can be implemented hydraulic j etting,finally micro-boreholes are formed between borehole and reservoir by high pressure jetting,and it can reach 100 meters far.On the basis of directional function of micro-boreholes,we’ll proceed to carry on the hydraulic fracturing technology,and then deep penetration artificial fractures are formed in the target formations,eventually to achieve the purpose of efficient reservoir reconstruction.The technology mechanism and procedure were introduced,the key parameters were optimized,and the rational treatments of volcanic formation were proposed according to the reservoir characteristic of Liaohe oilfield.The“directional deep penetration fracturing technology by hydraulic j etting”was applied successfully in the well of Liaohe eastern sag,and obtained high production.This technology was the first application in domestic oilfield,and brought a new method to develop volcanic formation including other difficult-to-produce reservoirs.
出处
《石油化工高等学校学报》
CAS
2014年第2期55-58,共4页
Journal of Petrochemical Universities
基金
国家科技重大专项"渤海湾盆地辽河坳陷中深层稠油开发技术示范工程(二期)"(2011ZX05053)
关键词
水力喷射
定向钻孔
压裂
深穿透
Hydraulic jetting
Directional borehole
Hydraulic fracturing
Deep penetration
