The patented NATCO Dual Frequency electrostatic technology utilizes a proprietary process controller, Load Responsive Controller (LRC-II), and three-phase power unit to produce a customized electrostatic field that can be readily optimized for any crude oil. The technology provides process improvements approaching 100% over existing mainstream electrostatic technology.

Since 1971 the NATCO Dual Polarity electrostatic technology has been used to dehydrate and desalt the worlds crude oil. Now, the patented NATCO Dual Frequency technology continues Camerons legacy of leadership in electrostatic technology.

NATCO Dual Frequency ElectrostaticsDual Frequency Electrostatic Technology provides process improvements approaching 100% over traditional technology

Dual Frequency 10 x 45

Dual Polarity Technology 12 x 60

Traditional A/C Technology 14 x 65

Typical Size Reduction with NATCO Dual Frequency

BENEFITS OF DUAL FREQUENCY ELECTROSTATICS

1. Increased oil flowrate through an existing vessel

2. Lower outlet BS&W

3. Reduced deckspace and vessel footprint at an equivalent outlet BS&W

4. Lower operating costs

Enables reduction in chemicals consumption

Allows for lower operating temperature

5. Balanced three-phase transformer

6. Cleaner effluent water, less floc

Tradit

ional

Techn

ology

Dual F

requen

cy

Flow Rate, KBPDExample: 65,000 BOPD 27 API Crude Inlet - 8% BS&W Outlet - 0.5% BS&W

Out

let

BS&

W o

f Oil

Phas

e

0

0.1

0.2

0.3

0.4

0.5

0 20 40 60 80 100 120

DUAL FREQUENCY RESULTS

Three primary components are packaged in a single oil-filled enclosure. First is the power electronics designed to operate on three-phase, 480 volt (50/60 Hz) to produce a variable amplitude and variable frequency voltage supply. For many field installations, this is a key feature of the technology, as it enables an optimization of the voltage profile. Second, the medium frequency transformer provides for the increased secondary voltage known to promote effective coalescence. Third, the secondary voltage is rectified so that polarized voltages can be applied to the electrodes to create the benefits of both AC and DC fields within the treater. These benefits have been proven in over 30 years of field experience with our NATCO Dual Polarity technology.

O I L

LOCATIONS OTHER LOCATIONS

United States of America11210 Equity Dr., Suite 100Houston, TX 77041 USATel 1 713 849 7500

United Kingdom5 The Heights, BrooklandsWeybridgeSurrey, KT13 0NYUnited KingdomTel: 44 1932 452000

Singapore2 Gul Circle (Gate 2)Jurong, Singapore 629560Tel 65 6861 3355

Australia

Brazil

Canada

Colombia

France

Japan

Malaysia

Mexico

Norway

Russia

Saudi Arabia

UAE

www.c-a-m.com

2013 Cameron | NATCO, LRC-II, Dual Frequency and Dual Polarity are registered trademarks of Cameron. | Printed in USA | 10/13 AD00534P

As with NATCO Dual Polarity, a DC field is created between the electrodes in the NATCO Dual Frequency coalescer, enabling droplet motion and efficient coalescence. Simultaneously, an AC field is created between the electrodes and the ground, enabling maximum droplet excitation, contact and droplet growth.

Traditional electrostatic technologies in wet crude oil service typically exhibit rapid voltage decay or arcing. This decay reduces the effectiveness of the dehydration process by pulling the voltage lower than that required for effective dehydration.

By operating with an increased frequency, the NATCO Dual Frequency controller reduces this voltage decay and enables effective dehydration. Utilizing a medium frequency power unit overcomes the voltage decay associated with conventional 50/60 Hz transformers.

Treatment chemicals, temperature and the specific oil-water properties of the oil all combine to create a unique emulsion that often can be very difficult to resolve.

To break the emulsion, the patented NATCO Dual Frequency system utilizes a microprocessor-based system (consisting of a NATCO panel PC and LRC-II controller) that defines the pattern and magnitude of the voltages that are applied to the electrodes. The proprietary LRC-II controller allows selection of the shape and magnitude of the voltage waveform to achieve the coalescing sweet spot for that crude leading to effective and rapid droplet coalescence.

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