Reverse Circulation Pipes (dual wall drilling)
This series reverse circulation pipes can increase penetration in lost-circulation formation, reduce drilling fluid consumption, protect reservoir stratum and save the cost of other consumption tools.
In addition, the pipes can be worked in two direction circulation drilling ways to control the well drilling.
With reverse circulation method the heavy mud can be transferred directly to the bottom of the well, no periodic circulation and save time.
The Reverse Circulation (RC) drilling is a drilling technique for mining, using a DTH Hammer, Tricone Bit or Three-Wings Bit.
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