粒子冲击钻头喷嘴研究  

RESEARCH ON THE BIT NOZZLES OF PARTICLE IMPACT DRILLING

作　　者：韩立国[1] 石超[2] 周龙昌[2] 徐依吉[2] 杨勇[2] 

机构地区：[1]胜利油田塔里木钻井公司 [2]中国石油大学石油工程学院

出　　处：《钻采工艺》2014年第2期70-74,119,共5页Drilling & Production Technology

基　　金：中石油重大科技项目"钻井提速提效新技术基础研究";编号:2011A4201

摘　　要：粒子冲击钻井技术提高硬地层的钻进速度,与国外粒子破岩方式不同,文章结合国内钻井现场的实际条件,从粒子冲击联合机械破岩提高钻速的角度出发,通过下井试验初步证实了粒子冲击与牙轮钻头结合进行钻井的可行性,结合固液两相流粒子运动规律,从粒子破岩要求、结构耐磨和粒子加速考虑,在现场钻井允许的水力条件下,对喷嘴重新设计,以满足粒子冲击钻井对喷嘴的要求,并且运用fluent模拟设计喷嘴的加速过程,证明设计的喷嘴能够满足粒子钻井的要求。Particle impact drilling technology can improve the drilling speed in hard formation.Different from foreign rock breaking mode with particle,combining the actual drilling conditions in China,the feasibility of the particle impact drilling combined with rock bit was validated in drilling operation.Combined with particle movement rule of solid-liquid two phase flow,considering the requirements of particle rock breaking,structure abrasion resistance and particle acceleration,under the allowed drilling hydraulic condition at the field,the bit nozzle was redesigned to make the HJT537GK bit meet the requirements of particle impact drilling.And the fluent software was used to simulate the accelerating process of the designed nozzle,the result proved that the designed nozzle could satisfy the requirements of particle drilling.

关 键 词：粒子冲击 模拟 喷嘴设计 喷嘴形状 粒子加速 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]