HDD Drilling Reamers

• Customized: Customized
• Standard: API
• Length: Jobber-length
• Type: Tricone Bit
• Material: TCI Tooth
• Usage: Well Drilling
• Color: Blue
• IADC: 517
• Connection: 6 5/8"
• Bit Weight: 241.3kg
• Transport Package: Wooden or Customized
• Specification: size from 3 3/8" to 26
• Trademark: superior brand
• Origin: China
• HS Code: 82071910
• Production Capacity: 50000PCS

Product Description

 High efficient trenchless construction / HDD rock reamer / hole opener 

1. Horizontal Directional Drilling
Directional drilling (or slant drilling) is the practice of drilling non-vertical wells. It can be broken down into three main groups: oilfield directional drilling, utility installation directional drilling (horizontal directional drilling), directional boring, and surface in seam (SIS), which horizontally intersects a vertical well target to extract coal bed methane. - wikipedia


2.What is HDD?
Horizontal Directional Drilling is a trenchless method of installing piping and cable systems underground in a shallow arc along a predetermined path by the use of highly specialized drilling equipment. Installing piping, conduit and cables underground via HDD is becoming the preferred method of installation as traditional trenching and excavating becomes non-practical and sometimes difficult due to terrain.


3.Benefits of HDD
HDD provides a host of benefits reducing environmental disturbances, reducing ecological impact, and contamination is virtually eliminated from the jobsite once compared to the traditional open cut installation methods. Noise pollution is minimized and speed of work is faster.
HDD Industry

4 .The main structure features:


The Rock Reamer with replaceable cutter was developed for large diameter HDD projects where extended life downhole is critical. The larger bearing and cutters dramatically extend the downhole  life over smaller, conventional-style cutters.

The replaceable cutter sets are available in both TCI and Milled Tooth styles to fit for all sorts of rock formation. All bit's bodies have three-six cutters and can open four different hole sizes.

All cutters bearing is metal sealed. Cutters lock is used for preventing cutter failing off.
400-2000mm hole opener are available.

 

	Normal WOB kN/mm (bit dia.)	Rotary Speed (rpm)	Cutting structure	Applicable formation
FJ437	0.35~0.90	280~60	Large radius offset crested scoop compacts in inner row, wedge compacts in outer row, high compact exposure and inequable spaced compacts arrangement	Very soft with low compressive strength and high drillability, such as shale, clay, sandstone, soft limestone, salt bed and gypsolyte, etc.
FJ537	0.50~1.05	220~40	Large radius offset crested scoop compacts in inner row, wedge compacts in outer row, high compact exposure and inequable spaced compacts arrangement	Medium soft with low compressive strength and harder abrasive stringers, such as hard shale, hard gypsolyte, soft limestone, sandstone and dolomite with stringers, etc.
FJ617	0.50~1.05	220~40	Large radius scoop compacts in inner row, wedge compacts in outer row and inequable spaced compacts arrangement	Medium hard with high compressive strength and thick & hard stringers, such as limestone, hard shale, mudstone and sandstone, etc.
FJ637	0.50~1.10	200~40	Conical compacts in inner row, spherical compacts in outer row	Medium hard with high compressive strength and abrasiveness, such as limestone, dolomite and hard sandstone, etc.