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: +447950-081067; e-mail: sales@consallen.com

FORAGER CABLE TOOL DRILLING  

A simple, and reliable low investment, drilling technology for boreholes. It will drill any material, including rock, 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.

Shell & Auger drilling differs slightly from other percussion drilling methods because a powerful winch enables tools to be pulled out that have been deliberately embedded, driven by heavy sinkers allowed to free-fall under gravity in the hole - see the video below. The rig can install and recover temporary steel casing. Several sizes of casing can be used in the same hole, as may be required by conditions.

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.

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. The PROSPECTOR version with an aluminium engine & completely demountable tripod frame is about 75 Kg (165 lbs) lighter.

Picture:  Forager-55/1250 cable percussion 10hp diesel rig - made in the UK - a wide choice of drilling tools is available depending on the drilling task - see Primary tools list below - also flush jointed temporary casing. This basic range version of the rig has a bare drum pull of 1250 Kg (2750 lbs) and weighs 450 Kg. (990 lbs)

How to drill by Cable Percussion   An outline of the 'shell & auger' method of cable percussion drilling process.

Why Cable Percussion?  PDF on the advantages of this traditional, but up-to-date, drilling system.
Everything needed for drilling is in the picture - no water, mud, mud pits, pumps or compressors required. Illustrated here drilling for rural irrigation in UK. Approximately 30 metres of mixed overburden (clay, sand, gravel, shell crag) over the chalk aquifer in eastern England - this well completed at 60 metres.

 


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, some with heavy flywheels providing additional 'grunt'.

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 30 metres and with 5-inch casing to 60 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. Bigger machines in the range can be expected to improve on the above figures.

Details of the Free-Fall winch may be seen at Free-Fall Winch

ready to tow to site
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.

The balance - with the weight of the tripod counter balanced by the engine and winch means that it can be wheeled easily by hand between drilling sites. In very difficult situations, the rig winch can be used to pull both it and a vehicle into and out of a site or through streams.

SPECIFICATION for the FORAGER-55/1250 'STANDARD' BUILD

  1. Winch single line (bare drum) pull: 1250 kg (2750 lbs)
  2. Weight of drilling tools suggested: 250 Kg (550 lbs). [Up to 500 Kg. (1100 lbs) for rock drilling.]
  3. Drum capacity: 140m (460 ft) of 10mm dia. wire giving a net drilling depth of 125 metres (410 ft).
  4. Tripod frame hoisting capacity 8,250 Kg (18,150 lbs)
  5. Height under top sheave 5 mtrs. (16.4 ft.)
  6. Lister-Petter hand crank start 10 hp diesel engine, mechanically driving the winch with multiple Vee-belts
  7. Road wheels (unbraked) & trailer towing gear - 50mm/2" ball
  8. Width over road wheels 1,300 mm (4'-3")
  9. Width after removing axle - 620mm
  10. Length on the road 6.6 m (21'-8") overall
  11. Towing weight of Frager-55 (basic) 450 Kg (880 lbs). The wheel set capacity is 750 Kg (1650 lbs) allowing tooling to be carried
  12. 6, 8 & 10-inch temporary casing size suggested, for 2, 3, 4, 5 or 6-inch wells.
  13. Demonstrations can be shown at our works in UK and site Training Packages are available.
OPTIONS & EXTRAS AVAILABLE
  1. Bigger more powerful engines
  2. Electric start engines
  3. Hydraulic power take-off from engine
  4. Hydraulic Casing winch
  5. Powered swivel for rotary drilling - hydraulic top drive will operate a down-the-hole hammer Powered Swivel
  6. Alternative tripod sizes, including very short & other specials
  7. Larger drum capacity
  8. Alternative gearing ratios
  9. Hydraulic casing jacking systems
  10. Hydraulic Casing Rotator - good in granular and heavy ground also in hard materials using toothed shoes Casing Rotator | Rotary Table
  11. Hydraulic Walking Beam attachment - automatic spudding device for hard drilling
  12. Alternative wire sizes up to 16mm diameter.
  13. Hi-Lo Hydraulic Power Pack Hi-Lo Power Pack
  14. Hydraulic powered version of the Forager-55 Hydraulic powered rig
  15. Ask us about kits for local completion.
How to drill by Cable Percussion   An outline of the 'shell & auger' method of cable percussion drilling process - a PDF file.

Top

PRIMARY DRILLING TOOLS

The following is a list of drilling tools we frequently supply as a package with rigs intended for drilling holes by normal cable percussion (shell & auger) method at about 6 inches (150mm) nominal diameter in general 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 non rotating crane wire 10mm dia. 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 spanner - set of 2 no.
  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
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


Home page: http://www.consallen.com/

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