https://www.liebherr.com/en-ph/p/cbrbunverrohrt-5953641
Core barrel with roller bits Effective length 1,200, Effective length 47, Diameter 700 - 2,000, Diameter 28 - 79, Bored pile diameter 700 - 2,000, Bored pile...
core barrelroller bitstypecbrb
https://www.slb.com/products-and-services/innovating-in-oil-and-gas/well-construction/drilling/drill-bits/roller-cone-bits
Durable tungsten carbide insert (TCI) and milled tooth (MT) roller cone bits provide superior drilling performance in oil and gas wells.
roller conebitsslb