Reamers | Openers - Drag Type Underreamer -
Stuckeyâs Specialty Toolsâ drag type underreamers are used in poorly consolidated soft to medium formations where large diameter intervals are required for gravel packing or cementing. It is also an effective tool for bell hole operations in fault zones. Pilot holes can be enlarged up to three times the body diameter in a single trip. These tools can be operated with water, mud, air, aerated mud, or any other circulating fluid. Low cost cutter arms are field replaceable and are dressed with tungsten carbide for good cutting action.