Light­weight ice drilling systems

Studies of snow cover, avalanches, glaciers, permafrost, seasonal ice of fresh or salt water basins, and extraterrestrial ice formations are usually conducted in extreme working environments.

Field operations in such environments can benefit from compact equipment in 3 key aspects: increased safety of field operations, reduced physical burden for the staff, and minimized transportation costs for equipment and samples.

And, of course, weight and size savings cannot compromise efficiency and reliability of equipment.

Medium series rig

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About

Intermediate depth wireline drilling rig is designed for operating electro-drills and borehole logging devices with power requirements up to 5 kW and up to 4 fiber optical communication channels. Depending on cable diameter it can be configured for drilling or logging boreholes up to 750 m deep. The winch is powered with 1 kW DC brush motor that can pull 300 kg load at the rate of 0.3 m/s.

Instrumented top pulley allows monitoring of down-hole tool position with resolution of 0.2 mm, as well as weight and cable tension with resolution of 0.2 N when the tool is stationary.

Winch drum is equipped with belt brake that can be independently activated with foot pedal or electric actuator.

Tilting table allows safe service and effortless operations with the down-hole equipment while it is on the surface. Tilting table and a pulley are equipped with cable bend limiters that prevent bending below the minimum radius.

Launching tube provides antitorque and vertical tool stability during mechanical drilling.

The rig platform leveling mechanisms allow fast setup and adjustments of the mast verticality.

Features

  • Instrumented pulley: load cells, encoder
  • Electric slip ring – 12 × 20 A lines
  • Optical rotary joints – 4 lines
  • Tilting table
  • Rig leveling
  • Foot brake on drum: mechanical & electric
  • Crank handle

Specifications

Base 1205 × 1220 mm 935 × 712 mm – without extenders & brake pedal

Height 4998 mm – without extenders 5150 mm – working assembly

Weight without cable 186 kg

Weight without launching tube
157 kg

Shipping weight (full) 500 kg (7 containers)

Load/drill length 3950 mm

Load diameter < 150mm

Pulling force (1 kW motor) 3000 N

Pulley work load 5000 N

Cable capacity (8 mm) < 750 m

Travel speed < 1 m/s – up < 2 m/s – down

Geometric specifications, pulling force and up travel speed customizable upon request.

Light series rig

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About

Lightweight drilling rig is designed for operations with "electro-drills" and borehole logging devices with power requirements up to 3 kW. It is equipped with 250 m of Kevlar electromechanical cable. The winch is powered with 1.5 kW DC brush motor that can pull a 1000 N load at the speed of 0.8 m/s.

Instrumented top pulley allows monitoring of down-hole tool position with resolution of 0.2 mm, as well as weight, and cable tension of 0.2 N resolution when the tool is stationary.

Winch drum is equipped with a hydraulic foot brake.

Tilting table allows safe service and effortless operations with the down-hole equipment while it is on the surface.

The rig platform leveling mechanisms allow fast setup and adjustment of the mast verticality.

The heaviest parts of the drilling system are winch drum with 250 m cable (22 kg) and motor gearbox assembly (23 kg), which is suitable for transportation by porters. Depending on mode of transportation and degree of dismantlement setup takes 1-3 hours.

This rig was field tested in 2016: https://fr.ulule.com/ice-memory/

Features

  • Instrumented pulley: load cells, encoder
  • Digital readout/controller
  • Electric slip ring – 3 × 20 A lines
  • Tilting table
  • Rig leveling
  • Hydraulic foot brake on drum
  • Crank handle

Specifications

Base 1170 × 930 mm 640 × 860 mm – without extenders

Height 3580 mm – without extenders 3670 mm – working assembly

Weight (250 m cable) 80 kg

Shipping weight (full) 250 kg (6 containers)

Load/drill length 3050 mm

Load diameter < 150mm

Pulling force (1 kW motor) 1200 N

Pulley work load 3000 N

Cable capacity (7 mm) < 250 m

Travel speed < 0.7 m/s – up < 1.2 m/s – down

Geometric specifications, pulling force and up travel speed customizable upon request.

Light series electro­mechanical ice core drill

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About

Main features of EM-100-1000 electomechanical drill are ability to core temperate ice and transient submerged operations.

The prototype of submersible motor section for fluid operation has been tested and the drill can be customized for drilling of fluid-filled boreholes.

The drill is equipped with hammer that ensures stuck drill release.

The electromechanical drill for ultralight ice coring system (from 50 to 75 mm) is currently under development.

Features

  • Interchangeable core barrel
  • Adjustable antitorque system
  • Hammer
  • Coring of temperate ice
  • Intermittent submerged operation
  • Submersible motor section – field tested prototype

Specifications

Total Length 2853 mm

Core barrel capacity 1100 mm

Core diameter 100.5 mm

Bore diameter 130.5 mm

Weight 30 kg

Shipping weight (full) 43 kg

Power
300 W 500 W – 30 sec 1 kW – 5 sec

Penetration rate (optimal) 5 mm/s

Production drilling rate (300m average) 5 m/h

Geometric specifications, customizable upon request.

Light series electro­thermal ice core drill

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About

We have designed a new generation of electrothermal drill. The main goals of new development were reduction of weight, power requirements and drill service time. Reduction of power usage lowers the penetration rate. However, increased travel speed in fluid-filled borehole and shorter service time on surface allows for the high production rate of average 2 m/h with power consumption of 1.5 kW in 300 m deep borehole.

The drill can operate in temperate, cold and polythermal glaciers.

Features

  • Interchangable alcohol container
  • Interchangable coring heads
  • Magnetic hammer
  • Capable of coring temperate ice
  • Cold (-30 °C) and temperate ice configuration

Specifications

Total Length 2995 mm

Core barrel capacity 2010 mm

Core barrel diameter 89 mm

Core diameter 85 mm

Bore hole diameter 110 mm

Weight 14.5 kg

Shipping weight (full) 27.5 kg

Power < 1.5 kW (220 V)

Penetration rate 1 mm/s

Production drilling rate (300m average) 2 m/h

Geometric specifications and lower operational temperature, customizable upon request.

Light series fishing-bailer

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About

Fishing-bailer is a device for assisting ice core drilling in the following situations:

  • Baling of melt water from a borehole;
  • Fishing EM, ET drill or cable
  • Delivering antifreeze to drill stuck in fluid-filled borehole.

Described functions were field tested.

Features

  • Centrator system
  • Cable fishing
  • Drill fishing

Specifications

Total Length 2850 mm

Effective volume 87 l

Diameter 115 mm

For bore diameter 130.5 mm

Weight 15 kg

Shipping weight (full) 30 kg

Geometric specifications, customizable upon request.

Ultralight series overview

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About

The ultralight ice drilling system is a multifunctional research instrument equipped with coring and non-coring thermal and electromechanical drills, as well as logging tools.

The ultralight system is currently under development. First prototype suitable for field operations is planned for release in summer of 2017.

Design specifications

Depth capabilities up to 150 m;

Total weight for glacier deployment 25 kg including: one coring or not coring drill and <0.5 kW power source;

Shipping weight for commercial airfreight: weight ~50 kg in 3 containers,

Electromechanical (EM) ice coring drill; core diameter from 50 to 75 mm; expected ice core production rate (150 m) 3-4 m/h;

Electrothermal (ET) ice coring drill: core diameter from 40 to 50 mm; expected ice core production rate (150 m) 1.5 m/h;

Electrothermal (hotpoint) non-coring drill: from 15 to 18 mm; expected penetration rate 12 m/h (0.5 kW);

UL system is under development now. First prototype for field operation planned to be ready for summer 2017.

About us

CRS specializes in custom design of lightweight ice drilling equipment for thermal and mechanical glacier drilling and coring.

Our expertise is based on 45 years of scientific, engineering, and field practice in polar and high altitude environments.

We can build drilling equipment for your needs and advise on how to combine drilling methods under complex conditions, such as melt water presence in upper and lower parts of glacier sequences.