Loosening of tie-in collar on RTS termination head

When the termination head has been submerged over a period of time, the swivel collar gets stuck due to marine growth and corrosion. This makes rotation of the swivel collar impossible for the ROV alone.. The tool package consists of an Acid Clamp Tool and a Swivel Collar Rotation Tool, designed to aid the ROV in rotating the swivel collar on the RTS termination heads.

The Acid Clamp Tool creates a habitat for injection of citrus acid that will clean the clamp and dissolve any corrosion or calcification.

The Swivel Collar Rotation Tool is a contingency tool to the Acid Clamp Tool. If the collar is still stuck after the acid wash the SCRT is installed to force the collar into position.


Contact us for more information: post@allinvent.no   Phone (+47) 456 08 255

Animation of ACT

Animation of SCRT

Video of SCRT from operation on Maria fields, DeepOcean and Edda Freya June 2016.

Hydraulic Flowline Coating Drill

Proven technology.
Cost effective solution.

Technical Highlights:
Pipesize: 12’’ or custom.
Operating pressure: 100 bar
Operation flow: 20 l/min
Hydraulic connection: JIC 6

About Hydraulic Flowline Coating Drill:
During operation, gas inside the flexipipe can migrate through the inner
layers of the flexipipe and get trapped between the outer annulus and the inner
annulus. The Flowline Coating Drill is a tool for drilling a hole in the outer annulus of a
flexipipe, to release any gas before uplift of flexipipe.
The tool is installed on top of the flexipipe and operated by the WROV.


Contact us for more information: post@allinvent.no   Phone (+47) 456 08 255