连续油管冲砂洗井技术在水平井中的应用  

Application of continuous tubing sand washing technology in horizontal wells

作　　者：张朔 王方祥 刘德正 倪庆怀 ZHANG Shuo;WANG Fangxiang;LIU Dezheng;NI Qinghuai(Downhole Technology Service Company,CNPC Bohai Drilling Engineering Company Limited,Tianj in 300283,China)

机构地区：[1]中国石油集团渤海钻探工程有限公司井下技术服务分公司,天津300283

出　　处：《石油化工应用》2018年第10期34-36,41,共4页Petrochemical Industry Application

基　　金：中石油渤海钻探工程有限公司项目"水平井连续油管作业技术研究";项目编号:2018ZD21Y-01

摘　　要：由于水平井井身结构的特殊性,地层出砂容易在井筒底部形成砂床,严重影响油气井的正常生产作业。为了解决常规冲砂作业效果差,成本高的难题,提出了利用连续油管在水平井中进行冲砂作业,并对其水力参数、喷嘴结构和冲砂工艺进行了优化设计。经现场实验证明,该技术可以带压连续冲砂,工艺技术简单,施工时间短,实现高效、安全的冲砂作业,取得良好的经济效益。Because of the particularity of the horizontal well structure, the sand production is easy to form in the bottom of the wellbore, which affects the normal production operation of the oil and gas well seriously. In order to solve the problem of bad effect and high cost in conventional sand washing operation, a continuous oil pipe is used to carry out sand washing operation in horizontal well, and its hydraulic parameters, nozzle structure and sand blanking process are optimized. Field experiment proved that the technology could carry continuous sand blast with pressure, which has the advantage of simple technology and short construc- tion time so as to achieve efficient and safe sand washing operation, and achieve good eco- nomic benefit.

关 键 词：冲砂 洗井 喷嘴 连续油管 水平井 

分 类 号：TE358.1[石油与天然气工程—油气田开发工程]