Drift diameter gauge is a special tool for testing the diameter of downhole tubular. It is mainly used to test whether the diameter of the inner diameter off the casing, tubing, drill pipe, etc. Meets the standard, and is a commonly used testing tool for underground operations.

(1) . Designed and manufactured according to API Spec 5CT and 5DP.

(2) . Three types: tubing drift, casing drift, and drill pipe drift.

(3) . Clean the inside of the pipes.

(4) . Text the diameter of downhole tubular.

Casing drift (in)	4 1/2	5	5 1/2	5 3/4	6 5/8	7
O.D. (mm)	92-95	102-107	114-118	119-128	136-148	146-158
Length (mm)	500	500	500	500	500	500
Up connection	NC 26	NC 26	NC 31	NC 31	NC 31	NC 38
2 3/8 TBG	2 7/8 TBG	2 7/8 TBG	2 7/8 TBG	2 7/8 TBG	3 1/2 TBG
Down connection	NC 26	NC 26	NC 31	NC 31	NC 31	NC 38
2 3/8 TBG	2 7/8 TBG	2 7/8 TBG	2 7/8 TBG	2 7/8 TBG	3 1/2 TBG

Tubing size (in)	1 1/2	2	2 1/2	3	3 1/2	4
O.D. (mm)	38	48	59	73	73	95
Length (mm)	500	500	500	500	600	600

Pipe type	Specification	Drift size
Drift size	Min. Diameter (mm)
			d-3.18
Casing	=16	150, 305, 305	d-3.97
			d-4.76
Tubing	=3 1/2	1067, 1067	d-2.38
d-3.18