1.Drillers always drill a smaller hole at first, then enlarger it with hole opener, it is a type of regular drilling technology when the drilling machine is lower power or the end-hole is too small.
2.Our company can make the hole opener according to the hardness of rocks, drilling depth, size of pilot hole and end-hole.
3.If fix the tricone bits as the pilot bits, the hole opener will be a rock bits, hole opener with tricone bits ,as pilot bits is always applicable in well drilling.
4.The reamer mainly consists of four or more cones.
5.The pilot is tricone bit.
6.Product applications: Suitable for the large size well, mining and infrastructure applications.
7.The size and number of cones are set according to
customer's requirements.
