A simple, and reliable low investment, light weight drilling technology for boreholes in unconsolidated materials. Available in kit form for local completion, the main component being the freefall winch, which is also sold separately.

Trailer-tripod Shell & Auger drilling, widely used in UK, has a powerful winch to pull out tools and cut materials after having been deliberately embedded, driven by heavy sinkers free-falling under gravity in the hole - see the video below. The rig can install and recover temporary steel casing as required to support unstable materials while drilling. Several sizes of casing can be used in the same hole, to suit the geological 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 - depending on the conditions and sequence of strata.

At only 500 Kg, this light 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 first picture shows a Forager-55/1250 trailer-tripod rig with split legs being used by two people to drill to 60 metres for a rural water supply: on mouseover there are more details.

The second picture shows a hydraulic version of the same machine working with the demountable power pack away from the operator.



Rugged high quality rigs made in England 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 highly successful Consallen design of clutchless freefall drilling winch, powered by either direct drive engines or by hydraulic power. Winches are available either built into rigs or stand alone.

WINCH details of both direct drive and hydraulic drive

They are suitable equipment for drilling contractors drilling water wells, site investigations, window sampling, remediation wells, drainage holes, cleaning & bailing and 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, proper planning, 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. The fully braced tripod can lift 9,000 Kg.

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, and the winch can be used to pull it into extreme places.


When driven HYDRAULICALLY, using our High-Low Power Pack the winch can have at least 2 speeds and hoist capacities, and provides both power up and power down, while retaining the free-fall facility. When the tools are light, high speed is available, but when pulling stuck tools or casing a slow speed at maximum pulling capacity is immediately available, providing a sustained bare drum tension of 3,000 Kg.

The safe mode of operation allows the driller to carefully control tools as they enter or are withdrawn from the drilled hole, or are presented for emptying, in a manner that is safe for both helper and driller; it also allows safe powered rig erection.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

Other equipment may be powered using a secondary hydraulic circuit, including casing jacks,
The picture changes OnMouseover

The picture shows a rig folder for towing, (total weight 500 Kg - 1100 lbs) with a demountable wheeled Power Pack. After erecting the rig, the unit can be rolled off the platform. Using the rig with the power unit at a distance provides the driller with a better working environment - it can always be positioned down-wind. This feature is demonstrated in the video clip below.

Here is a short VIDEO clip showing the hydraulic version at work:

Consallen Group Sales Ltd., Unit 5B Clockhouse Farm, Cavandish Lane, Glemsford, Sudbury, Suffolk CO10 7PZ, UK.
Tel: +44-(0)1787-247770; Mobile, SMS (text): +44(0)7724 687498; e-mail: