Challenges and Countermeasures of Key Drilling Techniques for the Deep Prospecting`

Abstract:

Today, with the increasing of exploration drilling amount, the number of constructed deep hole and extradeep hole also increases greatly, this gave unprecedented challenges in drilling technique and equipment. This article briefly discusses the new progress of drilling techniques, existing problems and countermeasures in the deep hole drilling.

Key words:resources exploration; deep prospecting; deep hole drilling; coring (sampling); drilling rig; drilling technique