Scope

The scope was to test the Mirmorax portable analyzer, DT250, offshore and verify that the portable Oil in Water Analyzer from Mirmorax is a suitable and efficient way to measure and monitor the oil concentration in the produced water.

The goals were:

– Verify that the Mirmorax technology is suitable for offshore application. – The DT250 can be used as a tool for lab-tech offshore – The DT250 can be used to monitor the process of produced water in-line – Using the DT250 to troubleshoot different parts of the process. – To use the DT250 as tool for monitoring the hydro cyclones efficiency.

Approach

Spot samples was taken at various locations on the platform and run through the analyzer.

Challenges

The main challenge of the test was to handle samples in such a way that they were representative when they were analyzed by the OIW Analyzer.

Result

A water sample from the discharge produced water line showed a spike of 17.1 ppm. However, the inline probe in the process confirmed the spike in the produced water.

Water samples from different location in the process was run through the portable OIW Analyzer.

The results are illustrated in the process diagram. It can be concluded that the poor “performance” of the 2.stage hydro cyclone is responsible for the increased oil level in the produced water.

Benefits

The Mirmorax DT250 can be used both as an in-line analyzer, connected to differ-ent locations in the process and used as a lab sampler where samples are collected in the process and analyzed within 5 minutes. The DT250 is a great tool to monitor hydro cyclone performance.

Scope

The scope was to test an inline probe with as little requirement for maintenance as possible in a dirty environment.

Mirmorax knew already that our analyzer could handle a 3 mm layer of scale and still provide accurate measurements, however in a dirty environment cleaning would still be required to avoid manual cleaning.

Approach

Mirmorax uses ultrasonic signals to sample data that we again produce measure-ment values from.

The advantage with ultrasonic signals is that ultrasound propa-gate through materials such as flesh and blood when used in medical examinations or when music easily propagates through the walls from your teenagers stereo. And because of this, Mirmorax measurement technology is by physics less vulner-able to contamination than other technologies used to measure oil in water.

Take for example light or use of light in photo to measure, where a thin sheet for a solid substance can block all light. Still, to ensure no need for mainance, Mirmorax installed an automatic cleaning system consisting of a flushing unit cleaning the probe as often as required using 3 small pulses of high pressured water.

Challenges

Cleaning requirements will vary from application to applica-tion. It was therefore necessary to provide a programable solution to fit every requirement.

Result

Mirmorax Oil in Water Analyzer providing reliable measurements without manual cleaning. Initial plan was to remove the probe for inspection after 3 months alt-hough measurements results revealed that the cleaning system kept the transducer clean with no requirements for inspection nor manual cleaning.

Benefits

Mirmorax technology is less vulnerable to contamina-tion, and with the cleaning system it can be installed for months with no mainte-nance requirement.

Scope

The scope was to test Mirmorax Oil in Water Analyzer up against a competitive technology on a produced water containing a various mix of water condensate and heavy oil.

Approach

Two OIW Analyzers where mounted in loop set to measure oil concentration on a continuous basis.

Challenges

Parts of the test was performed with high amounts of gas requiring a mechanical solution to measure accurate

Result

Mirmorax Oil in Water Analyzer providing accurate results both for single oil solu-tions and for produced water with mixed oils.

Benefits

Mirmorax technology measures accurate independent of oil type and mix of oil-types.