Research on Formation Identification Based on Drilling Shock and Vibration Parameters and Energy Principle

Table 5

Identification code of the drilling process.

Main process	Subprocess		Identification code
Drilling	Pure drilling	Apply shaft thrust	1x1x xx01
		Apply torque	xx1x xx01
		Rinse	xx10 0x0x
	Piston stroke	Release the chuck	0010 0000
		Lift the rotating head	0110 0001
		Tighten the chuck	0110 0000