Hole opener & Reamer
Fixed Diameter 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 oilfeld.
"SM": Soft to medium formation;
"MH": Medium to hard formation;"XH": Hard formation.
Roller reamer is designed for various reaming operation. It can be used in hard formation or abrasive formation, in order to keep the standard hole size. When the bit size is under the standard size, it can ream the well bottom size to standard hole size. Whether drilling the vertical well or directional well, it can make the bit or casing come into the normal hole size. The features of roller reamer are small frictional resistance with well wall, strong abrasive resistance and long life.
Hardfacing of roller:
Type T: Soft formation
Type F: Medium hard formationType B: Hard formation