Data Sheet | TC9814-043

METROL SEA-SCREEN Coarse StrainersProven efficient separation systemsHighly effective, trouble free, online backflushing sea water strainer systems.

OverviewWater is used extensively for cooling, water injection and

utility purposes by the oil industry. It requires filtration to protect downstream equipment and injection/production formations. METROL SEA-SCREEN seawater coarse strainer designs have supported the oil industry for over 20 years, making Cameron the world market leader in this field with an unrivaled reference list.

Operating Principle and Key FeaturesPressurized water enters the strainer basket at the

bottom and passes up and radially outward through the cylindrical strainer basket. Entrained solids larger than the straining slot become trapped in the horizontal recesses on the inlet face of the basket. As the volume of solids increases, the differential pressure across the strainer basket rises, requiring removal of the solids. This is achieved by a high efficiency automatic backflushing mechanism which can be initiated in one of three ways:

Backflush interval timer

Manual push button

Differential pressure switch

The METROL SEA-SCREEN Coarse Strainer stays online during the backflushing process, at almost full forward flow, with no deterioration in strainer performance. There is automatic sequential cleaning in all the strainer baskets within the package. On conclusion of a backflushing sequence, the control system resets automatically.

PerformanceThe SEA-SCREEN strainer range is typically 25 microns

up to 2000 microns (2 mm) and these units are normally guaranteed to at least 98% efficiency without chemicals.

Product Range Six standard strainer basket size models: 100, 200, 300, 400, 600 and 800

Individual vessels containing one to seven strainer baskets

Flow capacity from < 20 GPM (100m3/h) to > 2270 GPM (10,000 m3/h) per vessel at 80 microns

Materials of construction from lined carbon steel vessels with SS internals to exotic alloys

Custom wound wedgewire baskets for exacting particle size tolerances

Benefits and Advantages Only unit in the world specifically designed for offshore water injection/cooling water applications

Excellent cleanability characteristics by virtue of its high backwash velocity; in excess of ten times any equivalent unit on the market

The confidence of continuous operating installations dating back to the mid-1970s, such as BP Forties

An equipment package incorporating the highest effective strainer area and best possible operational flexibility within the smallest envelope

Components of proven standard design, giving reliable, trouble-free operation

Minimum possible water usage and flow rate during backflushing through use of a high efficiency cleaning mechanism, washing a small, precise element area at a given moment

Backflushing while the strainer remains online

PROCESSSYSTEMS

Filtered Water Outlet

Raw Water Inlet

BackwashOutlet

Gearbox Assembly

Drive Coupling

Vessel

Backwash Pipe

Strainer Basket

Backflush Flow Path

Backflush CollectorHead

Drain Outlet

W A T E R

2010 Cameron | METROL SEA-SCREEN are registered trademarks of Cameron | Printed in USA | 08/10 TC9814-043

PROCESSSYSTEMS

LOCATIONS

United States of America

11210 Equity Dr., Suite 100

Houston, TX 77041 USA

TEL +713.849.7500

United Kingdom

Cameron House

61-73 Staines Road West

Sunbury-on-Thames

Middlesex, UK TW16 7AH

TEL +44.1932.732000

Singapore

2 Gul Circle (Gate 2)

Jurong, Singapore 629560

TEL +65.6861.3355

OThERLOCATIONS

Abu Dhabi

Australia

Brazil

Calgary

Colombia

France

Japan

Mexico

Saudi Arabia

Russia

www.c-a-m.com

Options and TypesVessel diameter ranges from 28 to 86 (700 mm to 2200 mm). Cameron uses the versatility of component options to engineer strainer packages to meet our clients operational requirements within the physical space available. Equipment packages can incorporate all associated pipework, valves, instruments and controls necessary for safe and reliable operation; including, where required, walkways, ladders and lifting gantry for basket removal.

Installation Examples More than 100 strainer packages currently in service worldwide

Standard and custom packages handling flows from 220 GPM (50 m3/h) to over 52,800 GPM (12,000 m3/h)

FPSOs, fixed platforms and onshore installations

ApplicationsThe METROL SEA-SCREEN Coarse Strainer also has applications both onshore and offshore for the filtration of:

Seawater

Aquifer water

River water

Estuary water

Produced water

Multi Basket Coarse Strainer