Reverse Circulation Drilling (RC) is a method of drilling that uses dual wall drill pipes that consist of an outer drill pipe with an inner tube. These hollow inner tubes allow the drill cuttings to be transported back to the surface in a continuous, steady flow. Unlike diamond drilling, it compiles sample rock cuttings instead of rock core.
RC drill pipes from OD 88,9mm to 273mm
Standard design with o-rings, alternative with special flat seal system (OF-version)
All common industry standards like Metzke, Remet, Matrix, DR, API, and PERFORATOR threads
Accessories: crossover subs, digout subs, blow-down subs, blow-up subs, etc.
Non-magnetic stainless steel RC drill pipes