Reverse Circulation Drilling Pipe , Reverse Circulation Well Drilling Pipe , RC Drilling
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Reverse Circulation Drilling Pipe , Reverse Circulation Well Drilling Pipe , RC Drilling
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Features
Basic Infomation
Place of Origin: China
Brand Name: ROSCHEN
Certification: ISO
Model Number: NQ,HQ.PQ
High Light:

3 1/2" Reverse Circulation Drilling Pipe

,

3 1/2" RC Drilling pipe

,

10 3/4" RC Drilling pipe

Payment & Shipping Terms
Packaging Details: Bundle
Supply Ability: 6000
Specifications
Name: Reverse Circulation Drill Rods
Item: Reverse Circulation Drill Rigs
Sale: Reverse Circulation Drill Rigs For Sale
Drilling: Dual Tube Reverse Circulation Drilling
Drill Pipe: Reverse Circulation Drill Pipe
RC Drill Rods: Reverse Circulation RC Drill Rods
Rods And Pipe: Reverse Circulation Drill Rods And Pipe
RC: Reverse Circulation Drilling
Origin: China Reverse Circulation (RC) Drilling
Use: Oil Drilling Rig
Rig: Rig Equipment
Product Description

Reverse Circulation Drill Rods

ROSCHEN offers a complete line of premium quality reverse circulation, drill rods, in sizes from 3 1/2" to 10 3/4", and with a number of thread connections. All Reverse Circulation rods are manufactured using the most advanced technologies and specifically engineered to provide high strength, excellent wear resistance, and long life.

RC, dual wall drill rods are manufactured with an outer drill rod and an inner tube located inside the rod. When the drill rods are threaded together, the inner tubes seal together to provide a continuous route for cuttings to travel from the bit face to the surface for collection.


The RC method employs dual wall reverse circulation drill rods that comprise an outer drill rod, with an inner tube located inside the drill rod. The inner tubes overlap, and seal on the tube below with O rings when the drill rods are screwed together. These inner tubes provide a continuous sealed pathway for the drill cuttings to be transported from the bit face to the surface. The circulating medium, in most cases high-pressure air, enters the annulus between the rod and tube via the air swivel, which is normally part of the drill string, or sometimes mounted on top of the rotation head. The air travels down the annulus to the drilling tool, which is usually an RC hammer, or can be a blade bit or tricone roller bit. As in conventional open hole drilling, the air powers the drilling tool and the exhaust air carries the cuttings. 

In RC drilling the cuttings are returned to the surface through the inner tubes in the drill string and rotation head. Once through the rotation head, the air and cuttings comprising the sample change direction at the discharge blast box and are transported through the sample hose to the cyclone. The cyclone slows the sample, separates it from the air, and collects it. 

 

REVERSE CIRCULATION DRILL ROD SPECIFICATIONS
Thread Type Remet Remet Remet Metzke Metzke Matrix Matrix
Rod O.D. 3 1/2" 4" 4 1/2" 4" 4 1/2" 4" 4 1/2"
Outer Tube O.D. 88.9mm 101.7mm 114.3mm 101.7mm 114.3mm 101.7mm 114.3mm
Outer Tube I.D. 81.8mm 94.6mm 107.2mm 94.6mm 107.2mm 94.6mm 107.2mm
Outer Tube W.T. 5.3mm 7.1mm 7.1mm 7.1mm 7.1mm 7.1mm 7.1mm
Inner Tube O.D. 38.1mm 50.8mm 63.5mm 50.8mm 63.5mm 50.8mm 63.5mm
Inner Tube I.D. 32.6mm 45.3mm 58mm 45.3mm 58mm 45.3mm 58mm
Inner Tube W.T. 5.5mm 5.5mm 5.5mm 5.5mm 5.5mm 5.5mm 5.5mm
Spanner Flat 90mm 90mm 90mm 90mm 90mm 90mm 90mm
Weight 3.0m 75kg. 75kg. 95kg. 75kg. 95kg. 75kg. 95kg.
Weight 6.0m 120kg. 150kg. 168kg. 150kg. 168kg. 150kg. 168kg.


Please contact your ROSCHEN representative for additional details, and ordering assistance.


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For more information please contact:




ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED

 

Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
 

WeChat: +86-137 6419 5009 ; +86-135 8585 5390
 

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
 

Email: roschen@roschen.com ; roschen@roschen.net
 

Website: http://www.roschen.net ; http://www.roschen.cn

http://www.roschen.com ; http://www.roschengroup.com

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