DRILL TOOL
Button Bit
Drill Rod
Shank Adapter
Coupling Sleeve
Blade Bit
Coal Mining Drill Bit
Reaming Tool
Retrac Button Bit
Rotary Drill Bit
Cemented Carbide Grinding
Integral Steel Grinding
DTH TOOL
DTH Bit
DTH Hammer
DTH Pipe
Jumbo Cluster Hammer
Low Air Pressure DTH
Anchor Tools
Sub Adaptor
DTH Bit Profile
Special DTH Bit
RC Tools
Overburden System
ROCK DRILL
Pneumatic Rock Drill
Hydraulic Rock Drill
Excavator Mounted
Paving Breaker
Air Pick
STONE TOOL
Block Splitting
Block Pushing
Integral Steel Grinding
Polishing and Grinding
Abrasive Consumable
Diamond Blade and Drill

RC Rod

Reverse Circulation drill rod (also called dual-wall drill pipe)
Gas lift reverse circulation drilling along the pipeline after the compressed air into the well a certain depth, the inner tube is mixed with a liquid injected into the mixer. Since the mixed solution of density less than the density of the flushing fluid, resulting in the wellbore between the slag and the pressure pipe and the mixing pipe of the exhaust gas-liquid slurry under pressure in the wellbore liquid column flowing upwardly at a higher speed, so that the bottom of the hole core or cuttings continuous discharge surface. The drilling method has high drilling efficiency, good quality into the hole, the hole wall construction less prone to collapse in a loose formation, etc..
This series of gas lift reverse circulation drill drain layer can effectively improve drilling efficiency, and reduce or eliminate the loss of drilling fluid, reservoir protection, conservation supplies expenses. In addition, this section may take a positive cycle drill, reverse circulation are two ways to kill, well control and flexible. Reverse circulation kill weight mud can be sent directly to the bottom, do not segmented circulation, reduce processing time.

RC Rod

Reverse Circulation drill rod (also called dual-wall drill pipe) comprises an outer and inner pipe with a sealing system (usually 0 Rings) to keep the drill string pressurized. As RC drill rods are subjected to high wear in the drilling process Prodrill use only the high quality hardened alloy steel for the both rods and tool joints.

Length(Less bit)

Weight(Less bit)

External Diameter

Bit Shank

Hole Range

Working Pressure

Air Consumption

1020mm

94.0kg

99mm

JRC45

114-127mm

1.0-3.0Mpa

1.0-2.4Mpa

8-16m3/min

1111mm

66.5kg

126mm

JRC55

133-152mm

1.5-3.5Mpa

1.7-3.0Mpa

16-28m3/min

1250mm

110.0kg

146mm

JRC65

155-190mm

1.5-3.5Mpa

1.7-3.0Mpa

20-35m3/min

1208mm

70.0kg

126mm

JRC52

133-146mm

1.5-3.5Mpa

1.7-3.0Mpa

16-28m3/min

Bit Shank

Bit Diameter.(mm)

JRC

115,140,165mm

MIC

133,140,146mm

PR5

133,140,146mm

PR4

115,127,133mm