Fixed Diameter Hole Openers are used for expanding the drilled hole. The cutters are manufactured under the severe quality control. All our SiQuan hole openers are field maintainable, with easy assembly and disassembly.
They are all equipped with 3 or 4 cutters, as well as mud nozzles precisely located to clean the cutters and the hole simultaneously.

They are used for the following purposes.

●When drilling of the big hole is not possible because of the rig capacity.

●When a satisfied penetration rate is not obtained in case of the big hole drilling, it is used after drilling with smaller bit.

●When the hole direction must be controlled.

 When ordering please specify:

●Hole size to desire.

●Pilot hole size.

●Top and bottom connections.

●Fishing neck and bottom neck O.D and length.

●Type of cutters. 

Model	Hole open diameter	Qty of  cutters	Min Pilot hole	Fishing  neck  diameter	I.D.	Top connection (Pin)	Bottom connection (Box)	Overall Length
KKQ311	12 1/4"	3	8 1/2"	8"	1 1/2"	6 5/8REG	6 5/8REG	55"
KKQ406	16"	3	10"	9 1/2"	2 1/4"	7 5/8REG	6 5/8REG	59"
KKQ444	17 1/2"	3	10"	9 1/2"	2 1/4"	7 5/8REG	6 5/8REG	59"
KKQ559	22"	3	12 3/4"	9 1/2"	2 1/3"	7 5/8REG	6 5/8REG	69"
KKQ584	23"	3	12 3/4"	8"	3"	7 5/8REG	6 5/8REG	69"
KKQ610	24"	3	14"	10"	3"	7 5/8REG	7 5/8REG	69"
KKQ660	26"	3	17 1/2"	10"	3"	7 5/8REG	7 5/8REG	69"
KKQ4-914	36"	4	26"	10"	3 1/2"	7 5/8REG	7 5/8REG	87"