... used in the exploitation off natural gas,crude oil ,water well ,geological and underground foundation work all over the ... .Reet XS TCI tricone bit for oilfield /water well drilling bit 1)Main Features 1.Cutting StructureThe durability of ... ,medium hard,very hard formationApplicationpetroleum&gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and ...