分支水平井连续冲砂工艺技术研究  

THE RESEARCH ON CONTINUOUS SAND WASHING TECHNOLOGY IN MULTILATERAL HORIZONTAL WELL

作　　者：梁海波[1] 陈永恒[2] 赵金洲[3] 

机构地区：[1]西南石油大学油气测控实验室,四川成都610500 [2]中国石油辽河油田公司特种油开发公司,辽宁盘锦124000 [3]"油气藏地质及开发工程"国家重点实验室.西南石油大学,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2009年第3期107-109,共3页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：采用连续油管对分支水平井进行连续冲砂的缺点是连续油管直径小,井眼尺寸大,正冲砂时洗井液上返速度低,不易把砂子带出地面。采用常规的修井机对分支水平井进行连续冲砂时效低,容易造成砂卡事故。研究提出的分支井连续冲砂工艺技术和井眼保护工艺技术,实现了利用常规管柱进行有效连续冲砂的目的,不但大大缩短了冲砂工期,而且安全可靠。这种工艺技术无需采用连续油管作业机,经济可靠。The disadvantage using coiled tubing for continuous sand washing in the multilateral horizontal wells is that the diameter of coiled tubing is small,borehole size is big,the return speed of sand washing liquid is low while washing sand,and it is not easy to sand out to the ground.The efficiency using conventional service rig for continuous sand washing in the multilateral horizontal wells is low,and it easily leads to sanding in.In this paper,continuous sand washing technology in the multilateral horizontal wells and borehole protection technology are proposed,which achieve the purpose using conventional string for effective continuous sand washing.It not only significantly reduces the duration of the washing sand,but it is safe and reliable.This technology does not need to use coiled tubing operation machine,and it is economical and reliable.

关 键 词：分支水平井 连续冲砂 井眼保护 

分 类 号：TE358.1[石油与天然气工程—油气田开发工程]