Chela Series Crane

Enabling Simultaneous Operations: Reducing environmental footprint and improving return on investment

  • Description Description
  • Resources Resources
Description

Chela, an extra hand below the cantilever

Named after a crab’s claw, the Chela crane offers an extra hand in operations. Due to its crablike motion characteristics, it can reach below the cantilever as well as elevate towards the main deck, providing access to an area traditionally blocked by the drilling cantilever. Chela thus significantly reduces the total well construction time. Depending on the well-program, total time saved varies between 5 to 15% of  total rig days per well. This proven technology represents a robust opportunity to improve the return on investment (ROI) for every well drilled. With fewer rig days per well, it directly reduces the industry’s environmental footprint per well drilled while addressing the call for cost reduction from operators.

Resources
  • Chela Series Brochure
Chela Crane on jackup cantilever

Chela Single

  • With double knuckle crane boom
  • Fully redundant hoisting system
  • Single sided solution without blind spots
  • SWL range up to 25 tons
  • Working range from 4 to 20 m
Chela twins hand shake

Chela Twins

  • With telescopic crane boom
  • Cost-competitive
  • Two independently operated cranes
  • SWL range up to 15 tons
  • Working range from 4 to 12 m

Shared Features

  • Remote controlled
  • Logistics handshake with rig cranes and main deck
  • Passive anti-collision system
  • Hydraulic powered
  • No man-riding
  • No blind spots

Optional Features

  • Wireline sheave guidance system
  • Auxiliary hoist 5 t (constant tension)
  • Fully electrical with cloud-based data logging, processing and monitoring
  • Fully redundant hoisting system
  • Fully redundant actuation and control systems
  • Anti-swing hook
  • Anti-snatch load system (shock load absorbers)
  • Active anti-collision system
  • Man-riding
  • Gripper functionality
  • Can be mounted on a horizontal skid beam for enhanced coverage
Chela gears closeup
Chela FAT ground view
Chela on offshore rig
Sea Installer Challenger at Borssele offshore wind farm

Our designs at work

Ideas may start on paper, but our designs are brought to life each day as they serve the marine and offshore industries. View our reference list of field-proven designs and vessels.

View our reference list

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