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Process Vision

Process Vision2021-07-14T22:43:29+00:00

Innovation in Natural Gas Monitoring

Visual detection of liquids, hydrates or foam combined with image processing provides an alarm that can greatly reduce risk and improve operational performance of gas treatment plants and gas networks.

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LineVu

LineVu reveals contamination in high pressure natural gas systems that until now has been un-detected. Despite commercial and legal contracts requiring that no liquids or solids should enter a gas network, it is common to find that liquid contamination is the cause of damage to power stations and other plant all over the world.

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Description

LineVu reveals contamination in high pressure natural gas systems that until now has been un-detected. Despite commercial and legal contracts requiring that no liquids or solids should enter a gas network, it is common to find that liquid contamination is the cause of damage to power stations and other plant all over the world. LineVu is a camera system that can be permanently installed on high pressure natural gas systems. When installed downstream of a gas/liquid separator it provides a live video stream of the gas leaving the separator system. Image processing is used to provide operators with a highly sensitive alarm if there is a break-through that contaminates the gas stream. By monitoring the efficiency of gas/liquid separation systems LineVu provides game-changing safety and financial benefits.

Improving Foam Management in Gas Treatment

Liquid carryover in gas treatment causes foaming in amine and glycol contactors. Normal practice is to use de-foamer to recover from a foaming event. This often requires a reduction in gas flow rate until the foam is under control. Current practice is to monitor pressure drop across the contactor. Now, with LineVu reporting a carryover event before foaming starts, de-foamer can be added to prevent foam rather than recover from it, without loss of production.

Improving Condensate Recovery

After gas treatment, it is important to recover as much of the premium condensate from the gas as possible. Processing liquids (usually glycol) can be carried over from gas treatment and freeze in the dew pointing equipment. This causes temperature control problems and can partially block the liquid removal process, and a combination of glycol and condensate are lost down the gas export line. When LineVu reveals liquid carryover from gas treatment, flows can be adjusted to find the optimum flow until the problem is diagnosed and repaired.

Flow Assurance

Using LineVu at custody transfer points improves accountability for pipeline contamination incidents. Gas is bought and sold at custody transfer points on a dry gas basis. LineVu is revealing glycol and compressor oil carryover that, up to now, passed on-line gas analysers without tripping an alarm. With the extra knowledge that the gas is wet, flow computers can be corrected, operators can make better decisions regarding the acceptability of gas, and pigging operations can be optimised.

The Camera Can in the LineVu system is mounted above a pipeline, normally behind a double block and bleed valve, thereby providing a “stand-off”, meaning that any contamination present in the gas flow does not foul the optics of the instrument.

The data from the Camera Can can be fed to one of three possible user interfaces:

 

On Site Gas Production

LineVu Local

Monitoring natural gas contamination events as a process control parameter, the Camera Can is cable linked to a safe area controller, where image processing provides a live video stream and local alarm. This system may provide video and data to the site local network.

Up to 48 Camera Cans may be connected to the site controller installed in a safe area.

Application example

Improving operational excellence and plant productivity by monitoring liquid carry-over at gas treatment plant both upstream and downstream of the treatment plant to.

On Site Gas Production

LineVu Remote

Monitoring either single site or multiple sites, LineVu Remote includes an uplink to a secure server (either Process Vision’s or the Client’s server) allowing both remote and local access to live streamed video.  This system encrypts and compresses both video and data, and splits it into three sections for transmission via one or more mobile phone networks. An encrypted user interface is available to password protected users who may be a central technical resource, a control centre (for unmanned sites), or the users client (in the case of custody transfer).

Application example

Ensuring correct calibration of fiscal flow metering, optimising pigging events and improving safety at compressor stations in a pipeline network monitoring multiple custody transfer points and compressor stations.

Walking Under Gas Pipes

LineVu Mobile

LineVu mobile is used for temporary installations for surveys and de-bottlenecking projects. It combines the previous two versions. The Camera Can is cable linked to a Pelicase-mounted controller and uplink system giving the user a choice to store locally or live stream to store video and data on a remote server.

Application example

Evaluating separator performance and helping to diagnose process failures in a temporary installation.


Documentation

Data Sheet

InSight | Snake Robot

InSight is designed for high pressure combustible gas systems. It will be able to safely access systems via existing tapping points and become a versatile tool to perform a number of tasks that currently require a plant shutdown. InSight will have the ability to investigate the internal condition of piping and pressure vessels Additional tools will enable operators to troubleshoot operations problems such as foaming or fouling.

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Description

A Robotic Solution for Internal Inspections & Maintenance

The use of robotics in the oil and gas industry is becoming a hot topic.

Discussions with engineers made it clear that:

  • a better view of a number of processes would be a great benefit

  • 80% of downtime is due to preparation for human entry

  • a snake robot capable of entering towers and vessels via a small diameter tapping point would be the solution

The research and development team at Process Vision Ltd have responded to this need by developing InSight – a robot snake. It comprises of a maneuverable optical system, which can monitor the internal operation of processing systems while the plant is operating. The small diameter snake provides a live video feed to provide real time operations troubleshooting and equipment inspection.

InSight is designed for high pressure combustible gas systems. It will be able to safely access systems via existing tapping points and become a versatile tool to perform a number of tasks that currently require a plant shutdown. InSight will have the ability to investigate the internal condition of piping and pressure vessels Additional tools will enable operators to troubleshoot operations problems such as foaming or fouling.

The aim of project InSight is to:

  • increase availability by reducing the need for inspection shutdowns

  • improve safety by reducing the need for confined space working

  • reduce shutdown duration as online diagnostics will help shutdown planning and logistics

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