内置式双翼块旋转射流数值模拟分析  

Built-in Wing Block Rotary Jet Numerical Simulation Analysis

作　　者：范红明 杨永印[1] 程锋瑞 李佳[1] 英飞 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061

出　　处：《内蒙古石油化工》2013年第21期7-10,共4页Inner Mongolia Petrochemical Industry

摘　　要：在钻井过程中,水射流技术是最近几十年发展起来的一门新兴技术,应用较为广泛。喷射钻井技术则是高压水射流技术在钻井行业中的一个具体应用。最早选用普通射流喷射进行煤炭开采、清洗,之后发展水力破岩,由强大的钻井液射流,进行高速喷射,对井底给予冲击,迫使岩屑及时上返清洗井底。旋转射流作为一种新型射流,可有效扩大井眼破岩体积,提高破岩效率,从而提高钻井速度。本论文旨在利用数值模拟的方法,通过普通直射流进行对比,探究旋转射流的一些主要流动特征,并从射流径向、切向、轴向速度及速度角、最佳喷距进行详细描述,并对射流一些主要特征给予验证,这为水射流技术发展奠动了一定的基础。In the process of drilling,water jet technology is a new technique developed in recent decades,which has been widely applied.Jet drilling technology is a specific application of high-pressure water jet technology in drilling industry.The earliest use ordinary jet injection for coal mining,washing,followed by the development of hydraulic rock fragmentation,by powerful jet drilling fluid,high speed jet,give impact to bottom,forced the cuttings back to bottom hole cleaning in a timely manner.As a new type of water jet,rotary jet can effectively expand the borehole rock volume,improve the efficiency of rock fragmentation,thus improve drilling speed.This paper aims to use numerical simulation method,in contrast with the direct flow to explore some of the main flow characteristics of rotary jet,and analysis the radial,tangential and axial velocity and jet velocity Angle,the best spray from the detailed description,and verify some of the main features,which lay a certain foundation for the development of water jet technology.

关 键 词：数值模拟 旋转射流 普通直射流 速度流场 

分 类 号：TE242[石油与天然气工程—油气井工程]