7.1Subsea Pigging Skid
The subsea pigging skid consists of the seawater filter, centrifugal pump, venturi tube, flowmeter, pressure gauge and data acquisition system. Two operational modes including autonomous water filling and auxiliary water filling through centrifugal pump help realize pipeline internal cleanup.
Technical Parameters
|
Item
|
Parameter
|
|
Dimensions (L x W x H)
|
4,000×2,500×2,600 mm
|
|
Total Weight
|
10,000 kg (Chemical excluded)
|
|
Flowrate
|
150 m³/h
|
|
Working Pressure
|
≥ 170 psi
|
|
Operation
|
ROV
|
7.2Subsea Pressure
Test SkidThe subsea pressure test skid, integrated with seawater filter, subsea piston pump, pressure sensor, and data acquisition system, is suitable for pipeline pressure test operation. It serves to destroy the adhesion between the removed objects and the subsea pipeline through flushing from high-pressure water jet to wash up the marine organisms on the surface of the submarine pipeline.
Technical Parameters
|
Item
|
Parameter
|
|
Dimensions (L x W x H)
|
4,000×2,500×1,900 mm
|
|
Total Weight
|
8,000 kg
|
|
Flowrate
|
5 m³/h
|
|
Working Pressure
|
≥ 20,000 psi
|
|
Operation
|
ROV
|
|
Applicable Pipeline Dia.
|
203 ~ 610 mm
|
7.3 Subsea Distribution Unit
The subsea distribution unit functions with two kinds of operation modes including the Downline and subsea distribution unit. There are two pressure test channels and the expandable channels reserved. Each channel is integrated with temperature sensor and pressure sensor to allow for the simultaneous pressure test of multiple subsea pipelines.
Technical Parameters
|
Item
|
Parameter
|
|
Working Depth
|
≥ 2,000 m
|
|
Design Pressure
|
10,875 psi
|
|
Channel Size
|
1", 2"
|
|
Expandable Channel
|
4
|
|
Operation
|
ROV
|
