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Hole Opener

Hole Opener is used for enlarging the surface hole which drilled by cone bit in advance, or connected above the cone bit. It applies to Onshore and offshore oilfield. Drilling Tools

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Describe

Hole Opener is used for enlarging the surface hole which drilled by cone bit in advance, or connected above the cone bit. It applies to Onshore and offshore oilfield.

Cutters type: "SM": Soft to medium formation; "MH": Medium to hard formation; "XH": Hard formation.

Specifications
Model	Opening Size mm(inch)	Number of Cutters	Pilot Hole(Min.) mm(inch)	Fishing Neck mm(inch)	UpperConn.	LowerConn.	ID mm(inch)	OAL mm(inch)
KZ3-216	215.9 (8 1/2)	3	165.1 (6 1/2)	120.7 (4 3/4)	NC38	3 1/2REG	25.4 (1)	1524 (60)
KZ3-311	311 (12 1/4)	3	215.9 (8 1/2)	203.2 (8)	6 5/8REG	4 1/2REG	38.1 (1 1/2)	1524 (60)
KZ3-444	444.5 (17 1/2)	3	266.7 (10 1/2)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	57.2 (2 1/4)	1752 (69)
KZ3-584	584 (23)	3	355.6 (14)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	76.2 (3)	1753 (69)
KZ3-660	660.4 (26)	3	444.5 (17 1/2)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	76.2 (3)	1753 (69)
KZ3-813	812.8 (32)	3	444.5 (17 1/2)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	76.2 (3)	1850 (72-27/32)
KZ3-914	914.4 (36)	3	609.6 (24)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	76.2 (3)	1905 (75)
KZ4-914	914.4 (36)	4	444.5 (17 1/2)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	89 (3 1/2)	2650 (104 3/8)
KZ4-813	812.8 (32)	4	444.5 (17 1/2)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	76.2 (3)	2540 (100)
KZ6-1067	1066.8 (42)	6	660.4 (26)	241.3 (9 1/2)	7 5/8REG	7 5/8REG	76.2 (3)	1955 (77)

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