Experimental Investigation and Analysis of Dynamic Buckling of Drill String in Horizontal Well

Table 1

Drill string dynamics affect parameters and dimension.

Symbol	Parameters	Dimension
		L-T-M system
	Length of drill string	L
	Elastic modulus	ML^−1T^−2
	Drill string mass	M
	Drill string density	ML^−3
	Memento of inertial	L^4
	Axial force; friction; drill string gravity	MT^−2
	Rotary speed	T^−1