Coiled Tubing Injector Chain HR580/HR680 200-4

• Designed for the forces and stresses of coil tubing injectors, reducing the risks of damage to CT string
• All chain components ready for use
• Through-hardened pins for longer working life
• Shepherd’s Crook or split cotters available
• Solid bushings minimize bedding-in time for maximum wear life
• GP wide waist plate for superior strength and longer life

The experimental work conducted had the goal to establish the necessary state of health for the coiled
tubing in order to ensure the required safety both for people and well during the operation of
insertion/extraction. The coiled tubing is inserted/extracted in/from the well bore by using a device
known as injector. The injector should provide the required force to introduce, extract and sustain the
coiled tubing as presented in figure 4.
The injector assembly is designed to fulfil three main functions:
 provides the required force to introduce the coiled tubing inside the well bore acting against the
internal pressure of the well and friction forces.
 control the speed of coiled tubing introduction when the weight of the tubing is pooling down
the coil.
 sustain the weight of the column and speed up the extraction of the tubing during the extraction
phase.