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Water Wells Hole Opener
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 big
We can make the hole opener and solutions according to the hardness of rocks, drilling depth, size of pilot hole, size of end-hole
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 special sizes well drilling .The reamer mainly consists of four or more cones
Cutting structure with premium tungsten carbide hard facing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistant capability of reamer
Water Wells Hole Opener Operational Considerations
Drilling Weight - The choice of drilling weight is determined based on the recommendations of the bit manufacturer and the number of cutters on the hole opener.
Number of Cutters - The number of cutters placed on a hole opener is governed by the following facts:
- Maximum number which will fit around the perimeter.
- The greater the number of cutters, the less the weight, which therefore reduces the penetration rate.
- In softer formations, less weight is needed to penetrate.
- The greater the number of cutters, the smoother the tool will run.
- The greater the number of cutters, the greater the cost.
- The greater the number of cutters, the longer the cutters will last
Hole Cleaning - A frequently over looked point of hole opener operation is hole cleaning. The volume of cuttings to remove from a hole increase by a squared factor with an increase in hole diameter.
|18||457.2|| HA/HJ 117,127,217,517,537,617,637 |
|20||508|| HA/HJ 117,127,217,517,537,617,637 |
|24|| 609.6 || HA/HJ 117,127,217,517,537,617,637 |
10-40 inch can be customized as customer`s requirements
Steel tooth cones hole opener picture
TCI cones bit hole opener