摘要
粒子回收系统是粒子冲击钻井中的一个重要系统,它的好坏关系到粒子能否实现循环利用和钻井液的正常循环。而磁选机是此系统关键的粒子回收设备,对于它的研究可以有效地降低粒子损失率,从而节约钻井成本。为此,通过对磁选机的理论研究,设计了符合粒子回收系统适用的磁选机。通过磁选机的实验,得出了不管是纯粒子还是粒子和岩屑的混合物,磁选机回收粒子的效率都在97%以上。建议尽量降低钻井液的黏度且保持钻井液的清洁,使磁选机处在一个良好的磁选环境;保持磁选机滚筒表面的清洁,及时用清水清洗滚筒表面黏附的固相物,使磁选机滚筒表面具有较强的磁场强度,便于吸附粒子。
Particle recovery system is an important system of particle impact drilling,and magnetic separator is the key equipment of particle recycling system.The magnetic separator could reduce particle loss rate effectively,thereby save the drilling cost.Based on the study on the theory of the magnetic separator,the magnetic separator suited for the particle recovery system was designed.Through the experiment of magnetic separator,the particle recovery efficiency of magnetic separator was over 97%.A suggestion was put forward,that was reducing the viscosity of drilling fluid and maintaining the cleanness of drilling fluid,make the magnetic separator was in a good environment of magnetic separation;Keeping magnetic separator roller surface clean,washing immediately with water roller surface adhesion of solid content,make the magnetic separator roller surface had strong magnetic field intensity to adsorb the particles.
出处
《钻采工艺》
CAS
北大核心
2013年第6期5-7,149,共3页
Drilling & Production Technology
基金
中国石油"十二五"重大科技专项钻井新技术新方法研究项目(编号:2011A-4201)
山东省自然科学基金重点项目"粒子冲击钻井技术理论与关键技术"(编号:ZR2010EZ004)研究成果
关键词
冲击钻井
粒子回收
磁选机
结构
回收效率
钻井液
impact drilling
particle recycling
magnetic separator
structure
recovery efficiency
drilling fluid
