摘要
粒子冲击钻井技术是一种在钻井液中加入钢粒子,以超过150 m/s速度经钻头喷嘴喷出冲击井底岩石实现破岩的技术,目前该技术主要通过计量输送机构转轴转速的方式,实现钢粒子体积分数调控,但存在无法直观反映粒子输送量、体积分数调控不够准确等问题。因此,文章提出了一种在线精确调控粒子体积分数的方法,设计了称重无轴螺旋输送机构和粒子提升机构,基于此研制了一种用于粒子冲击钻井系统的钢粒子精确调控装置,该装置可根据钻井液排量实时精准调控系统前端粒子体积分数。室内测试和现场试验结果表明,该装置实时精准调控的粒子体积分数误差小于1%;输送和提升机构均未出现卡堵和钢粒子堆积现象,整体运行稳定,满足粒子冲击钻井系统需求,同时有望为物料连续计量输送提供一种新的技术手段。
Particle impact drilling technology is a kind of technology to add steel particles into drilling fluid, with more than 150 m/s speed through the drill nozzle to impact break bottom rock to achieve rock breaking. At present, the volume fraction of steel particles can be controlled mainly by measuring the rotating speed of the conveying mechanism, but there are some problems such as not being able to directly reflect the steel particle throughput and not being accurate enough to control the volume fraction. Therefore, this paper presents an online method for the steel precise regulation of the particle volume fraction, weighing shaftless screw rod conveying mechanism and steel particle lifting mechanism are designed, based on this a precise adjusting and controlling device for steel particles is developed, and the steel particle volume fraction of the front end of the system can be adjusted online according to the displacement of drilling fluid. The results of indoor tests and field tests show that the device can accurately regulate the steel particle volume fraction in real time with a regulation accuracy higher than 99%,there is no jam and accumulation of steel particles in the transport and lifting mechanism, and the overall operation is stable, meeting the needs of particle impact drilling system, and it is expected to provide a new technical means for the material continuous metering transportation.
作者
黄伟
姚建林
郑凯中
刘彬
陈晗
范黎明
李雷
HUANG Wei;YAO Jianling;ZHEN Kaizhong;LIU Bin;CHEN Han;FAN Liming;LI Lei(CCDC Driling&Production Technology Research Institute,Guanghan,Sichuan 618300,China)
出处
《钻采工艺》
CAS
北大核心
2022年第1期101-104,共4页
Drilling & Production Technology
基金
中国石油天然气集团重大现场试验项目“粒子冲击钻井技术研究与现场实验”(编号:2015F-1801)。
关键词
粒子冲击钻井
粒子输送
精确调控装置
粒子体积分数
particle impact drilling
particle transport
precise control device
particle volume fraction
