On Drawing up and Revising Technical Requirements of Drill Rod and Casing Listed in National Standards Geological Core Drilling Tool and the Implementation

Abstract:

The summarization is made on the related technical regulations and revising basis for drill string, casing and some other terms listed in national standards Geological Core Drilling Tool（GB/T 16950—2014）and the investigation and analysis are carried out on the standards adoption and implementation in order to cause the sustained attention in drilling trade and promote the publicizing and implementing drilling tool standards.

Key words:wire-line core drilling; drill rod; casing; drilling standard; standardization