PDC钻头井底流场实验装置设计

Design of The Experimental Instrument for PDC Bit Downhole Flow Field Testing

摘要:

根据ＰＤＣ钻头的结构特点、破岩原理及现场使用情况，阐明了进行ＰＤＣ钻头井底流场试验研究的必要性和迫切性。结合国外的有关资料，设计出能够进行ＰＤＣ钻头单喷嘴射流特性、井底漫流特性及全尺寸钻头井底液流流动规律试验研究的实验装置。该装置实现了井底流场特性的三维空间测量。

Abstract:

The nccessity and urgency of PDCbit downhole folw field testing are demonstrated according to the character of PDC bit structure,principle of rock fracturing and circumstances of using in drill sites.Combining withforeign informations ,an instrument was designed for PDC bit with single nozzle testing,Also used for downholeover flow characteristic and full gauge bit downhole fluidic rule experiments.This instrument realizedthreedimensional measurement of downhole folw field characteristics.