Apparatus to Monitor Flow Assurance Properties in Conduits

Abstract

A combination of sensors are strategically placed along a pipeline to measure critical properties such as temperature and pressure of the flow product. The sensors are a combination of fiber optic sensing devices that are specifically designed to measure a range of properties within particular bandwidth, with a method to reduce light attenuation over the long pipeline distances. The pipeline is typically subsea and can range widely in diameter. In many cases the pipeline has a coating that acts as a barrier to the corrosive sea water and additional thermal barriers.

Description

BACKGROUND OF THE INVENTION[0001]1. Cross Reference to Related Application[0002]This application claims priority based on the Provisional Application No. 61 / 242,746, filed on Sep. 15, 2010, by David V. Brower, entitled: “An Apparatus to Monitor Flow Assurance Properties in Conduits,” which is incorporated by reference herein.[0003]2. Discussion of the Prior Art[0004]The invention is directed to a device and methodology for measuring the flow assurance properties in conduits and pipeline that are used to transport oil and gas products. Pipelines that link wellhead s to a processing site are increasing in length. Many of these pipelines are deployed in subsea environments where water temperatures can cool the pipe that carries the hydrocarbon form the production well. As hot gases that flow from the well are subjected to cooling, hydrates can precipitate from the product and results in flow restrictions and in extreme cases can completely block the pipeline. In other instances slow bu...

AI Technical Summary

Benefits of technology

[0007]The invention includes a combination of sensors that are strategically placed along the pipeline to measure critical properties such as temperature and pressure of the flow product. The sensors of the subject invention are a combination of fiber optic sensing devices that are specifically designed to measure a range of properties within particular bandwidth, with a method to reduce light attenuation over the long pipeline distances. The pipeline is typically subsea and can range widely in diameter. In many cases the pipeline has a coating that acts as a barrier to the corrosive sea water and additional thermal barriers.

[0008]The invention has the capability of m

Problems solved by technology

As hot gases that flow from the well are subjected to cooling, hydrates can precipitate from the product and results in flow restrictions and in extreme cases can completely block the pipeline.

In other instances slow buildup of paraffin wax on the interior of the pipeline can cause flow restrictions.

In the past there has not been a convenient method for collecting the temperature and pressure flow of the product in the pipeline along the length of the pipeline.

As these distances become greater, the difficulty has increased with respect to the collection of this information.

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