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 CONSALLEN

 FORAGER RANGE
  (up to 3000 Kg winch pull)

LIGHT CABLE PERCUSSION DRILLING MACHINES

BOREHOLE DRILLING - WATER SUPPLY- INVESTIGATION - PROSPECTING


Consallen Group Sales Ltd., P.O. Box 2993, Sudbury, Suffolk CO10 0ZB, UK. Tel: +44-(0)1787-247770; SMS (text) to: +447950-081065; e-mail: sales@consallen.com

PROSPECTING & ALLUVIAL MINING

HANDPUMPS for WELLS & BOREHOLES

 

FORAGER CABLE TOOL DRILLING  

A simple, and reliable low investment, drilling technology for boreholes. Primarily used for unconsolidated materials, it will drill any material, including rocks, and is not troubled by boulders cobbles, or large gravel. Requires no mud, mud pits, mud pumps, tanks, drill rods, hammers or compressors, and needs only one vehicle.

It is a non-invasive and sensitive drilling method, allowing discovery, testing and water development, as progress is made. It is an appropriate method for water wells, for mineral prospecting, site investigation and remediation. This rig will drill to 125 metres (410 feet) with the standard winch drum - depending on the conditions and sequence of strata.

At only 450 Kg (1000 lbs), the smallest standard machine can be man-handled on its own wheels to places which would be inaccessible to heavier equipment. It is both helicopter and canoe portable.
Why Cable Percussion?  PDF on the advantages of this simple, traditional, but up-to-date & valuable drilling system.

Gallery showing several application for Forager drilling rigs Gallery

VIDEO: showing setting up the rig and cable percussion (Shell & Auger) drilling
The picture (right) shows a Forager-55/1250 rig being used by two people to drill 40m of boulder clay (glacial till) and mixed sand/weathered chalk beds and 20m into fissured chalk for a rural water supply: no mud, no mess with this essentially dry drilling method.

 

FORAGER CABLE PERCUSSION RIGS   

Rugged high quality UK made rigs with very low inputs - quick two man set-up and operation; they cover the entire range of materials, with nothing extra to buy if the ground is harder than you thought. Machines are permanent, long life and maintanable.

Designed and built in the UK for use world-wide. At their heart is the engine & winch combination; we use our own highly successful design of clutchless freefall drilling winch and good high torque engines or hydraulic power.

They are suitable equipment for drilling contractors and NGOs producing typical rural water wells. Faster and cheaper than hand digging for rural development programmes - not stopped by boulders, and a profitable commercial investment for drilling water wells, site investigations, window sampling, remediation wells and other environmental drilling. Can be used for setting drive points, hydraulic (jet) percussion drilling, peizometers & insitu testing, geothermal drilling, and prospecting.

PERFORMANCE of drilling rigs is a combination of the machinery, tools & equipment, materials to be drilled and operator skill. In suitable conditions the Forager-55/1250 can provide boreholes with 8-inch casing to 15 metres; with 6-inch casing to 60 metres and with 5-inch casing to 90 metres. Open hole drilling to 145 metres has been achieved below 90 metres of 5-inch casing installed by jacking. Improved performance can usually be obtained by using hydraulic jacks to advance casing, rather than simple percussion. It is quicker than driving, can reach much greater depths, and can be done while drilling continues uninterrupted.

HYDRAULIC DRIVE RIGS   


The rig pictured above right is directly driven by the Lister diesel engine. It has just one gear. It is simple and robust, but the compromise between speed and hoist capability, restricts the machine to shallow drilling. This is becasue the hoisting speed remains the same for light tools containing only drilled material as it is for heavy hoisting of casing and stuck tools.

When driven HYDRAULICALLY, using our Power Pack the winch has effectively 4 speeds and hoist capacities, and may be used in either of two modes, giving both power up and power down in safe mode, while still retaining the free-fall facility in the second mode. When the tools are light, high speed is available, but when pulling stuck tools or casing a slow speed is prefered, but at maximum pull.

The safe mode of operation allows the driller to carefully control tools as they enter or are withdrawn from the drilled hole in a manner that is safe for both helper and driller; it also allows safe powered rig erection. The change-over between operating modes can take place at any time. Hydraulic drive allows the use of maximum available hoist - even while stalled - with no wear to the hoist brake.

Other hydraulic equipment may be powered, by a secondary circuit, including casing jacks, casing rotator etc.. casing rotator solid stem auger driver and kelly drive (rotary table).

The picture changes OnMouseover
TOWING & MOVEMENT

The Standard Forager-55 rig weighs about 500 KG and when folded, can be towed by a small car or pickup, and is easily towed off road in conditions, which would be impossible with heavier machines. It is light enough to be man-handled to most locations.

The hydraulic version shown here with the demountable diesel Hi-Lo Power Pack. The wheel mounted Power Pack is wheeled off the operator's stand after the rig has been erected using the rig's own power. Using the rig with the power unit at a distance from the driller provides him with a better working environment. He has also a clean, firm and vibration-free stand from which to work.

The rig and long tools weighs less than the 750 Kg limit allowed to be towed by a driver having only an ordinary car driver's licence.

DRILLING TOOLS   

The following is a list of drilling tools frequently used with rigs intended for drilling holes by normal cable percussion (shell & auger) method at about 6 inches (150mm) nominal diameter in unconsolidated soils - without casing. The list is suitable for drilling Basement Complex weathered overburden, glacial till & boulder clays, sand, gravel and cobbles. The same tools would be used if both 8-inch and 6-inch temporary casing were required:-
  1. Drilling wire in lengths to suit the depth envisaged - available to order up to 140 metres long. Supplied with swaged thimble eye one end and fused & tapered the other, of 10mm dia. non rotating crane wire - working load 1250 Kg.
  2. Attachment shackle - bow type - 3250 Kg. (7150 lbs) SWL.
  3. Sinker bars standard 100mm diameter weight 50 Kg each, threaded M/F with barring holes top & bottom. Normally 4 no. required & supplied. Also available in shorter half lengths, and by weight, to order. 50 Kg suits a two-man crew and satisfies EU Health & Safety requirements. SINKER BARS
  4. Threaded swivel bail for top sinker bar.
  5. Tool joint spanners
  6. 140mm dia. bailer with clack valve and threaded removable shoe - capacity 20 litres (Available to order up to 50 litres capacity) - See details of the bailer via this link: BAILER
  7. 140mm dia. Clay cutter with threaded removable shoe and threaded top to suit sinkers. See page about the various uses of a clay cutter (the 'Auger' in shell & auger drilling) CLAY CUTTER
  8. Basket catcher system for clay cutter comprising plastic catcher basket and 2 no. steel support rings.
  9. Stubber tool threaded to suit sinkers.
  10. Spade reamer - approx 180mm dia. - threaded to suit sinkers. SPADE REAMER
  11. Cross bit 145mm dia. threaded to suit sinkers - with hard faced welding cutting edges. CROSS-BIT
  12. Sliding hammer - light type - for driving cutting tools where required.
  13. Pair of snatch blocks to pull stuck tools - top one fits to tripod apex - working capacity 2500 Kg.
  14. Wire puller - 2000 Kg capacity for use with above snatch blocks.
  15. Universal shoe & shackle tool - used to remove shoes from bailer & claycutter and to tighten shackle pins
  16. Modular drilling system without sinkers also available.
Other tools are available, including flush jointed temporary steel drilling casing and attendant handling, driving and recovery equipment. See details under the following link: CASING

Consallen Group Sales Ltd., P.O. Box 2993, Sudbury, Suffolk CO10 0ZB, UK.
Tel: +44-(0)1787-247770; You may send an SMS (text) to: +447950-081067; e-mail: sales@consallen.com