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

Table 4

The status of each working parameter of the drill pipe drilling process.

Subprocess		Feed pressure	Feedback pressure	Flushing pressure	Back movement	Move forward	Drill rotation	Electric hoist rotation	Bit displacement
Pure drilling	Apply shaft thrust	1	0	1	0	0	1	1	1
			1		1	1	0	0
	Apply torque	1	0	1	0	0	1	1	1
		0	1		1	1	0	0
Rinse	1	0	1	0	0	1	0	1
	0	1				0		0
Piston stroke	Release the chuck	0	0	1	0	0	0	0	0
	Lift the rotating head	0	1	1	0	0	0	0	1
	Tighten the chuck	0	1	1	0	0	0	0	0