Field mobile welding machine for drilling tool hardfacing;

The Experimental device for erosion of drilling tool of gas drilling;

Based on statistics and analysis from plenty of information on situation investigation on drilling tool failure and failure analysis data from oilfields,this paper all-round and systematically instates the status-quo,form and cause of drilling tool failure and prevention measure,which has important guiding significance to the drilling tool safety of com.

Drill tools have corroded seriously when they are used in the engineering of oil exploitation by Jiangsu Oil Field.