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	General Description Paramode solid cast casing and tubing centraliser are designed to afford maximum positive standoff within the annulus to aid primary cementation. Centralisers are engineered to provide minimum resistance during casing running, rotating and reciprocating operations. Straight and spiral bladed variants are available to suit operational requirements.

Features

• Solid casing and tubing centralisers comprising a one piece casting.
• Configured with either 4 or 6 radial straight or spiral blades.
• One piece slip on design affords maximum strength and high standoff with no exposed components to hang up during installation.
• Engineered to aid cementation with adequately sized flow by areas.
• External profile designed to minimise resistance to both axial and rotational movement.

Location

• Axial location of the centraliser on the tubular is provided by separate stop collars.
• Stop Collars preferred for the spiral bladed variants as they permit the centraliser to rotate and aid tubular running operations.
• Alternative methods include locking screws either carbon or stainless steel to secure in position.

Size

• All popular cardinal tubular sizes available in varying lengths.
• Non standard sizes can be readily accommodated at very short lead times.

Options

• Specially engineered variants available such as close tolerance or clamp on type.
• Centralisers with specific features including provision for control line location, etc. are available for particular applications.
• Involve us at the design stage where your special requirement maybe one of our standard products.

Material - All standard sizes are available in alternative materials of:

• Aluminium Alloy.
• Leaded Bronze.
• Speriodal Graphite Cast Iron to special order only.
• Material selection is dependant upon required operating parameters.
• Aluminium types have a proven track record being the industry standard for many years producing excellent results on many wells in all operational theatres.
• Bronze can be used to minimise the risk of bimetallic corrosion between centraliser and tubular in extreme conditions.
• Bronze offers improvements in both mechanical strength and enhanced bearing capabilities with benefit of reduced friction characteristics.
• Spheriodal graphite cast iron can be used for high strength applications.

Coating

• Centralisers are normally supplied as cast with a shot blast surface finish to remove scale and discontinuities to enhance bearing properties.
• Spheriodal graphite cast iron centralisers can be supplied hot dip galvanised or flame sprayed aluminium or zinc.
• Epoxy coal-tar and zinc rich primer finishes are also available. * Alternatively centralisers can be painted to suit customer requirements.

Markings

• Size clearly marked on each centraliser.

Quality Control

• Full documentation package supplied as standard with each order.

Availability

• Paramode has designed centralisers and downhole accessory products for many years.
• We have an extensive register of designs covering most sizes of tubing, casing and riser.
• Our vast knowledge and expertise in this field allows us to react quickly to technical queries and provide recommendations without delay.

For further information contact us at info@paramode.co.uk