WFS Technologies (WFS) has launched Seatooth PipeLogger Corrosion Monitor.
“Designed to deliver a step reduction in the cost of long term monitoring of subsea pipelines and jumpers, the Seatooth PipeLogger Corrosion Monitor is set to revolutionise subsea asset integrity monitoring,” WFS said in a press release.
The Seatooth PipeLogger Corrosion Monitor incorporates UT (Ultrasonic Thickness) sensors that monitors wall thickness to an accuracy of 0.1mm through up to 6mm of pipe insulation. Wall thickness measurements are taken at user-defined intervals and stored in an on-board data logger, the company explained.
The wireless communications range of standard Seatooth devices through seawater, the seabed, concrete blankets and the splash zone is 5-10m.
Systems are depth rated to 1000m or 4000m and weigh under 5 kg in seawater.
A Seatooth PipeLogger AM system incorporates a Seatooth PipeLogger unit having a Seatooth Sense accelerometer sensor and a data logger and is suitable for retrofit to existing pipeline assets. Features such as tilt, elevation and depression of the pipeline is monitored without any penetration of the pipe occurring.
Data stored on the Seatooth PipeLogger AM is harvested wirelessly using a Seatooth Data Recovery Unit (DRU) integrated with an ROV, diver or AUV.
Seatooth PipeLogger is a revolutionary wireless real time pipeline monitoring and logging system designed for retrofit to subsea assets such as buried pipelines. Seatooth® PipeLogger product base forms a family of retrofit wireless subsea instrumentation design for EOR, Flow Assurance and Asset Integrity applications.
Each Seatooth PipeLogger system is an effective supervisory control and data acquisition (SCADA) platform for subsea pipelines and risers which can aid as part of an effective flow assurance plan. Secured to the outside of a pipe, Seatooth Sense technology is integrated into each Seatooth PipeLogger system and can include a range of non-penetrating sensors to facilitate condition monitoring.
By utilising non-penetrating sensors, no flow disturbance occurs within the pipeline, nor does the corrosion, plugging and cleaning problems associated with penetrative sensors occur. The sensed data can provide early warning of issues including hydrate build up, pipeline fatigue and pipeline corrosion which may impact on flow assurance.
Seatooth technology provides communication in seawater as well as through air, ground,. WFS’ patented Seatooth technology supports reliable two-way wireless communications through seawater, seabed, concrete blankets, walls, metal pipes ice and the splash zone. Seatooth PipeLoggers can be configured as wireless Remote Terminal Units (RTU) in SCADA network.
The data transmission techniques used in Seatooth enabled products support two-way communications with digital data transfer occurring at high data rates and low latency.
The Seatooth PipeLogger system data logger logs sensed data which is then wirelessly harvesting by the ROV provided with a Seatooth S100 DRU (Data Recovery Unit). As both the Seatooth PipeLogger and associated S100 DRU system is Seatooth enabled, the paired system can communicate bi-directionally should there be a wish for command data to be transmitted from the Seatooth S100 DRU to the Seatooth PipeLogger unit.
Seatooth PipeLoggers are configured as standalone devices. Optionally, they can be configured as networked devices and the inter-node distance extended to 30m using a Seatooth S400 communications platform.
Features
Using patented technology, Seatooth PipeLogger AM unit is a retrofittable or integrable sensor unit which monitors the movement, vibration, tilt and angle of pipes. The Seatooth Sense uses non-penetrating accelerometer sensors.
Other non-invasive sensors can be incorporated in conjunction with the accelerometer sensors. Available additional non-invasive sensor options include: Ultrasonic Thickness sensors to monitor corrosion and pipe wall thickness; Ultrasonic Flow sensors to monitor process flow rate or relative velocity; Thermometer to determine external and internal core pipe temperature, including through pipeline insulation; Internal Voltage sensors for cathodic protection and ICCP monitoring.
The deployed sensors can operate at a user configurable reading rate from 1/min to 1/month and the PipeLogger data logger is able to store up to 40,000 data points.
The Seatooth PipeLogger base system is designed for an 8” pipe and includes an accelerometer sensor and data logger. Saddle options are available for pipe diameters from 4” to 48”. The PipeLogger can be secured to a pipeline using tie-straps or a heavy duty magnetic clamp.
For ease of deployment, the Seatooth PipeLogger AM may be provided with a ROV or Diver grab handles or a ROV clamp for handling and may additionally include ROV/diver LED interface.
Proprietary Seatooth Endure power management technology can be incorporated to provide an extended battery life or up to 15 years.
The Seatooth PipeLogger AM system may be depth rated to 1,000m.
The Seatooth PipeLogger AM unit communicates bi-directionally with a Seatooth S100 Data Recovery Unit (DRU) integrated with an ROV (via a RS232 serial connection), diver or AUV achieving 2.4kbps bandwidth and 5m transmission range through fluid. The system is compatible for communication with conventional wireless systems.
Optionally, a Seatooth S400 based system supports data harvesting by fly-by pigs, transmitting data through the pipe wall.
Application
A Seatooth PipeLogger AM system may be used as a:
Retro-fit vortex induced vibration (VIV) monitor – this enables monitoring of motion induced on subsea assets interacting with surrounding seawater flow to understand fatigue in real time and cumulatively.
Retro-fit flow induced vibration (FIV) monitor – this enables monitoring of motion induced in pipelines by the fluid flowing internally within the pipeline to understand fatigue in real time and cumulatively.
Retro-fit wave induced vibration (WIV) monitor: this enables monitoring of motion induced on deployed assets within the wave zone to understand fatigue in real time and cumulatively.
Extended functionality can be acheived through inclusion of additional sensors:
With UT or voltage sensor options – long term corrosion monitoring
With Ultrasonic Flow sensor option – hydrate build-up monitoring
With Temperature sensors – internal and external pipeline temperature.
Case study: Pipeline Integrity Management
• Purpose
– Flexible retrofit of temperature sensors to monitor subsea pipework
– Wireless data recovery subsea by fly-by ROV, AUV, Diver or topside
• Specification
– Temp sensor: 0-200°C; +/- 0.5°C
– Datalogger: 400,000 data points
– Radio
Upload rate: approx. 1,000 samples per min
Range: up to 5m
– Networkable
– Magnetic clamps
– Battery life: 5 years
• Benefits
– Low cost deployment & recovery
– Low cost, flexible data collection
– Wireless sensor networks to access remote locations
石油圈
