全金属螺杆钻具研究现状与关键技术

Research status and key technology of metal-to-metal screw PDM drills

摘要:

螺杆钻具作为一种容积式动力钻具，具有良好的输出硬特性，是当前应用最广泛的井下动力钻具之一。螺杆钻具的耐温性是其研究的热点所在，可扩大其应用范围和延长工作寿命，在深部高温钻探领域，具有良好的发展前景。本文在阐明螺杆钻具的基本原理和特性基础上，调研分析了常规螺杆钻具的发展现状，重点调研分析了美国全金属螺杆钻具的研发现状与国内全金属螺杆钻具的发展，提出了全金属螺杆钻具的关键技术，为国内开展这项前沿钻具技术的研发提供参考。

Abstract:

As a volumetric power drill, the screw PDM has good output hard characteristic and is one of the most widely used downhole power tools. The heat resistance of the screw drill is the research hot spot, improvement of which can expand its application scope and extend its working life. It has a good development prospect in the field of deep high temperature drilling. This paper introduces the basic principle and characteristics of screw drilling tools, and investigates the current development of conventional screw drill tools with the focus on the development status quo of all metal screw drilling tools and the development of domestic metal screw drilling tools. The development trend and key technology of the all metal screw drilling tool are put forward to provide reference for domestic research and development of the leading edge tool.