超高压淹没射流破岩规律实验研究  

Experimental Study on the Breaking of Rock by Ultra-High Pressure Water Jetting

作　　者：冯云春[1] 徐依吉[1] 赵付国[1] 

机构地区：[1]中国石油大学石油工程学院射流研究中心,山东东营257061

出　　处：《高压物理学报》2005年第1期66-70,共5页Chinese Journal of High Pressure Physics

基　　金：CNPC 重点实验室项目(03A20201)

摘　　要：超高压水射流在石油工业中的应用主要是超高压射流联合机械破岩。对超高压淹没射流破岩规律的研究,其目的在于为超高压 PDC钻头的研制提供依据。研究发现:影响超高压射流破岩的主要因素有压力、喷距、喷嘴移动速度和喷射角度等,射流压力越高破岩效果越好,最优喷距随着压力的升高而升高,200 MPa时最优喷距达到 32 5 倍喷嘴直径,150 MPa时破岩效率最高,喷射角度在12 5°时破岩效果最好。Ultra-high pressure water jetting has a use for assisting mechanical breaking of rock in petroleum drilling. We found by experiment that the main factors affecting the breaking of rock are pressure, distance, speed and angle of jetting. With the increase of pressure, the breaking of rock is better and at 150 MPa, the efficiency of rock breaking is the highest. The most distance of jetting is 32.5 times diameter of nozzle when the pressure is 200 MPa, and the best jetting angle is 12.5°.

关 键 词：超高压 水射流 喷距 喷射角度 破岩 

分 类 号：O521.9[理学—高压高温物理] TD231.62[理学—物理]