Ore Mining Reverse Circulation Hammer Performance Tooling Engineered by Boart Longyear

Reverse Circulation Hammer Performance Tooling engineered by Boart Longyear

REVERSE CIRCULATION DRILLING HAMMERS

Reverse Circulation RC drilling hammers and hammer drill bits provide outstanding performance along with outstanding reliability and simplicity. Our reverse circulation hammers are suitable for any exploration and grade control process to obtain an accurate sample with no contamination. RC drilling hammers can in most instances carry out continuous sample collection in a fraction of the time necessary with conventional or wireline coring.

WHAT IS RC DRILLING?

Reverse circulation (RC) drilling uses a bit attached to a down-hole hammer to produce a hole. Unlike diamond drilling, RC drilling produces samples of rock cuttings rather than a sample of rock core. The down-hole hammer is powered by compressed air, which also acts as the medium bringing the drill cuttings up to surface.

Traditionally, RC drill rigs have been known as powerful, heavy truck- or track-mounted machines. Such machines are unsuitable for remote exploration work because of the difficulties and costs associated with moving the drills to site. In Canada, Northspan has changed this by being a front-runner when it comes to designing RC drills, which can be moved to remote drill sites with light helicopters or fixed-wing aircraft.

RELIABLE SAMPLES

RC drilling today produces samples of high quality and reliability. Dual-pipe RC drilling utilizes double drill rods where air is passed down the hole through the outside annulus and into the hammer. Drill cuttings are cleared from the bit by the air and travel up through the centre tube of the drill rods remaining free from contamination.

There are two main types of RC drilling systems: the centre-sample system and the conventional cross-over system. Using the centre sample system (see schematic), drill cuttings liberated by the bit travel up directly through holes in the bit face and into the centre tube of the drill rods. This method produces an accurate and uncontaminated sample. As a result, RC drilling results are successfully used in compliant resource calculations worldwide.

When using the conventional cross-over system , cuttings first travel up around the bit before entering the centre tube through cross-over slots. This method is rapid, cost-effective and particularly suited for first pass exploration drilling.

In a number of geological scenarios, the large volume of sample collected by RC systems can be a significant advantage. Exploration projects dealing with a “nugget effect” (for example, coarse gold or diamond projects) can often benefit from a larger diameter drill hole. Northspan generally drills holes with a diameter ranging from 3 ⅝” to 4 ½” (92 mm to 114 mm). The sample recovery from a 3 ⅝” (92 mm) diameter hole is approximately 11 lbs/ft (16.4 kg/m) depending on rock type.

RC is a drilling method widely used around the world. The method is unbeatable in areas where water is scarce or expensive, such as Australia and Western Africa (and, for the same reason, in northern Canada).

HIGH RATE OF PENETRATION

A big advantage of RC is its high rate of penetration. Penetration rates often exceed 80 m per shift depending on ground conditions. The speed of drilling can often mean big cost savings compared to slower drilling methods.

GOOD IN BAD GROUND

RC drilling is relatively insensitive to ground conditions, which may be difficult or slow to penetrate using other methods. Dual-pipe RC was originally developed as a method to drill “nightmare” geological formations (such as permafrost, glacial till, broken rock, etc.) where conventional drilling methods were costly and ineffective.

RC drill cuttings are transported to surface inside the centre tube of the dual pipe. Because of this sample recovery is usually very good with high recoveries of both fines and clays.

ENVIRONMENTALLY SOUND

Reverse circulation drilling has several environmental advantages. First and foremost, RC mostly requires no water for rock drilling. This is a benefit in areas with limited or sensitive water supply.

In addition, frozen water sources and waterlines can make winter drilling both tricky and expensive, if not impossible. In certain areas, like the arctic tundra, environmental permitting is easier for winter drilling when the ground is frozen and unlikely to be disturbed. Light-weight RC makes winter drilling in the arctic a viable option.

Why not carry out land-based winter drilling programs as opposed to more expensive heli-supported summer programs?

Keywords:

Reverse Circulation Drilling
Reverse Circulation Drilling Equipment
reverse circulation drill pipe
what is reverse circulation drilling
dual tube reverse circulation drilling
reverse circulation drilling method
reverse circulation water well drilling
flooded reverse circulation drilling
reverse circulation drilling companies

Reverse Circulation drill rig
Reverse Circulation drill rigs
Reverse Circulation drill rigs for sale
Reverse Circulation drill rigs for sale used
Atlas copco Reverse Circulation drill rig
Reverse Circulation and Well and Foundation Drilling Tools,
Drill Bits, Top Heads, Drives, Drill Pipe and Solutions

Reverse Circulation foundation well drilling bits, High hole boring drill tools, top heads, hole hammers, openers, pipe drivers

foundation drilling, High & Low RPM well drilling tools, hole drills,drilling,drills,rigs,cluster drills, CNC,manufacturing,fabrication,heat-treatment,large-diameter drilling systems and custom drilling
tools,welding,design,reverse-circulation,machining top heads, hole hammers, casing pipe perferators

Reverse Circulation foundation well drilling tools, hole boring drill bits, top heads, hole hammers, openers, drivers and drill pipe manufacturing

RC Hammers
Reverse Circulation hammers
boart longyear Reverse Circulation hammers
Reverse Circulation hammers
Atlas copco Reverse Circulation hammers
reverse circulation swivel
what is reverse circulation drilling
reverse circulation drill pipe
dual tube reverse circulation drilling
Reverse Circulation RC Hammers
Reverse Circulation Hammers and Bits
Reverse Circulation Hammers & Bits
RC Drill Hammers
Reverse Circulation RC Drilling
Reverse Circulation DTH Hammer
Down the Hole Drilling Tools
Reverse Circulation Hammer
Rock drilling tools
reverse circulation swivel
what is reverse circulation drilling
reverse circulation drill pipe
dual tube reverse circulation drilling

Reverse Circulation Drill Rods
Reverse Circulation Drill Rod
Reverse Circulation Drill Rigs
Reverse Circulation Drill Rigs for sale
Reverse Circulation Drill Rigs for sale used
dual tube reverse circulation drilling
reverse circulation drilling process
reverse circulation drill pipe
what is reverse circulation drilling
matrix drill pipe
reverse circulation bits
dual wall reverse circulation drilling
reverse air drilling
Reverse Circulation RC Drill Rods
Reverse Circulation RC Drilling Rods
Reverse circulation rods - Technidrill
Reverse Circulation Drill Rods and Pipe
Related searches for Reverse Circulation Drill Rods
dual tube reverse circulation drilling
reverse circulation drilling process
reverse circulation drill pipe
what is reverse circulation drilling
matrix drill pipe
reverse circulation bits
dual wall reverse circulation drilling
reverse air drilling
Dual Tube Drill Rod
Reverse Circulation Drilling
Dual Tube Drill Rod for Reverse Circulation Drilling for sale
Premium Reverse Circulation Drilling Pipes

Reverse Circulation Drilling Pipe, reverse circulation pipe, Reverse Circulation Well Drilling Pipe, rc drilling pipe, drilling pipe, drilling rod, dual tube drilling pipe

Reverse Circulation Performance Tooling
Reverse Circulation Drill Rods 4 in OD
Reverse Circulation Pipe
Reverse Circulation Drilling
Reverse Circulation
Reverse Circulation Drilling with Patented Grout Through
Reverse Circulation Drilling Programs
Reverse Circulation (RC) Drilling
Reverse Circulation rods
Reverse Circulation rotary drilling
reverse circulation swivel
what is reverse circulation drilling
dual tube reverse circulation drilling
reverse circulation drill pipe
Reverse circulation drill rod/drill pipe for sale
Reverse Circulation Dual Tube Drill Rod Surface RC Tool Joint End

FAQ

Terms & Conditions of Ordering:

Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.

Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damage during transportation. Also we can customize package according to your special requests.

Production time:
Generally need 15-25 days

Transportation:
By air, By Express or By sea according to your requests.

1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight

2. Handling time for an order
Based on order quantity, normally it takes 20 days for production.
in 3 working days after receiving the advance payment

3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.

4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.

5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time

6. Quality & Service:
A. There will be strict inspection and testing for every order before shipping out.
B. Our sales team and Technical Support will response for your question within 24 hours through skype: ROSCHEN.TOOL and WhatsApp/Wechat: +86-13764195009
C. Free replacement will provide once the failure confirmed caused or our product quality; Not satisfied with a refund.

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

http://www.roschen.cn ; http://www.roschendrill.com

http://www.roschenmining.com ; http://www.roschendrilling.com

ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

ROSCHEN Manufactory PROCESS

ROSCHEN Sales Value Growing Up!

ROSCHEN'S MISSION

1. Strive to create and supply Best quality products for the industry that last longer than the average products.

2. Provide excellent service for our clients. 24 hour-7 days /week schedule to get our clients what they need – FAST.