ONS 2016: Mirmorax launches desktop oil-in-water analyzer

By Mirmorax AS on 8/31/2016

Norway-based Mirmorax AS, an industry leader in sampling and oil-in-water analyzer solutions, particularly in the North Sea, has announced the launch of its Desktop Oil-in-Water Analyzer—the DT250.

The portable instrument, based on Mirmorax’s third-generation ultrasonic technology, will provide North Sea operators with efficient, flexible and highly accurate sample analysis as well as live measurements of oil and solids in produced water.

This will lead to improved monitoring capabilities and the flexibility to de-bottle neck various parts of the processing system. This will bring new value and optimization possibilities to existing separators and filters, enable targeted use of chemicals, and ensure the meeting of all environmental requirements in the North Sea.

The Desktop Oil-in-Water Analyzer will also be particularly suited to challenging fields that host separation from different tie-backs with various oil types in the same produced water. Such tie-backs are particularly prevalent in the North Sea as operators look to make more marginal fields economically viable.

“With the current low oil & gas prices, the flexible, cost-effective and accurate monitoring of oil in water to ensure optimal operations, effective separation and environmental compliance has never been more important in the North Sea,” said Mirmorax CEO, May Britt Lilletvedt.

Key benefits to operators of the Desktop Oil-in-Water Analyzer’s features include accurate and robust oil-in-water analysis with the ability to handle chemicals and various oil types. The new instrument simultaneously detects oil and solid particles; calculates the mean size of oil particles and solids; and provides other crucial input information, such as the temperature and salinity of process water. Today, salinity is a key operational measurement to ensure effective operations and reliable subsea equipment and in preventing the build-up of formation water.

The Desktop Oil-in-Water Analyzer is also low maintenance, robust and easy-to-use. The system can be set up in minutes and either be used as a sample analyzer or as a by-pass analyzer providing continuous measurements. The instrument can analyze fresh produced water samples or samples that has been stored for a longer time.

The instrument is lightweight, is ideal as a portable test instrument that can be mobilized quickly (fulfilling the weight and size requirements for offshore helicopter transportation) and comes in a robust, weatherproof case.

The top-half of the analyzer case also includes a touch screen unit that is used both for displaying the results and for configuring the analyzer into the relevant mode of operation.

The Mirmorax Oil-in-Water Analyzer is based on ultrasonic measurement technology in which individual acoustic echoes are characterized using advanced signal processing. A highly focused acoustic signal is transmitted directly into the produced water and the reflection and absorption of the signal provides a wide range of accurate measurements. In the target region, individual solids, oil droplets and gas bubbles will reflect the acoustic energy and each reflected signal will hold particle specific information. Based on a large number of direct measurements, the analyzer calculates mean particle size for oil and sand, with the size distributions then used to calculate corresponding concentration values.

The analyzer is designed to manage the lower range (0-250 ppm) of oil and particles and delivers accurate classifications of particles and size distributions.

The integrated design also includes a separate chamber where the sample is analyzed with a stirrer keeping the sample homogeneous at all times. Analysis time for a sample is less than 5 min. under normal conditions with the model also including an outlet interface that allows for by-pass flow of produced water to flow continuously through the measurement chamber.

This element of the new system is particularly useful when finding the optimal location for in-line probes. The instrument also comes with a produced water-sampling bottle that enables closed circuit sampling for optimal HSE and the conditioning of old samples for later analysis.

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