摘要
岩屑运移效率是气体钻水平井中的关键问题,是关系着气体钻井成败的重要因素.以实验为基础进行了包括岩屑床颗粒运移形式、颗粒启动特征等的现象分析,提出了岩屑表现出的几种运移形式,对颗粒直径、钻杆机械转速、注气量等对岩屑运移样态的影响进行了分析研究.认为钻杆旋转时,岩屑跳跃距离更远、运移效率较高,进而提出进行岩屑破碎、改变注气量的大小可以有效控制水平井的携岩性能,有效净化水平井管道.该分析结果可为提高气体钻水平井岩屑运移的效率提供分析参考.
Cuttings migration efficiency is a key issue in air drilling of horizontal wells,also a critical factor concerning the success of air drilling wells.Based on experimental analysis of cuttings particles migration pattern and particles initiation features,this paper suggests several migration patterns of cuttings.According to the research on the factors affecting the migration diversity of cuttings such as particle diameter,mechanic rotary rate of drill pipe,amount of air injected,this pater believes that cuttings leap further and migrate better during rotation of drill pipe,and further proposes that the bring-cuttings performance of horizontal well can be effectively managed by breaking cuttings and changing the amount of air injection,so as to improve the clearing efficiency of horizontal well pipes.The analysis results will provide reference for the improvement of cuttings migration efficiency in air drilling of horizontal wells.
出处
《内江师范学院学报》
2016年第10期48-51,共4页
Journal of Neijiang Normal University
关键词
颗粒物质
岩屑运移
岩屑启动
颗粒直径
机械转速
注气量
particles
cutting migration
cuttings initiation
particle diameter
mechanic rotary rate
amount of air injection
