TWIN FILTER - DIATOMACEOUS EARTH FILTERATION

DIATOMACEOUS EARTH (D.E.) FILTRATION FOR OILFIELD FILTRATION OPERATIONS

Clean completion fluids can only be obtained by using the right selection of filtration equipment and consumables. Diatomaceous Earth (D.E.) filtration is the most effective method for filtration of completion fluids. Twin Filter has sourced his own D.E. material, Twinlite.

Our Vertical Pressure Leaf (VPL) filter unit, or our Filter Press, in combination with the Duplex cartridge filter unit has proved to be the most effective solution for filtration of fluids. Our systems can handle flow rates up to 30 BPM. With our filtration set-up, a wide range of fluids can achieve NTU levels of < 5 ppm.

BENEFITS OF TWIN FILTER D.E.

• Specifically designed for offshore and onshore use
• High dirt holding capacity
• Low operational costs
• Removing wide range of solids
• Reliable and simple design
• Small footprint
• Wide standard range
• Rental units available
• Technical support 24/7
• Total package supply

APPLICATIONS

Our VPL units and filter presses are being used in the following range of applications:

• Well Completion fluids
• Gravel pack fluids
• Work-over fluids
• Brines
• Acids
• Stimulation fluids
• Seawater
• Waste water
• Glycol
• Amines
• Produced water

VERTICAL PRESSURE LEAF (VPL)

The Twin Filter VPL has proven to be the best D.E. filter in the Oilfield market. More often oil companies are specifying the VPL as most effective way to treat completion fluids. The high throughputs with low NTU and no spillage of brines are the main factors. Therefore many service companies have chosen the Twin Filter Vertical Pressure Leaf unit as their standard filter unit.

STANDARD DESIGN FEATURES

• Closed system
• Very quick and effective wash down of leaves, less than 10 minutes
• Semi-automatic cleaning without opening
• Laminar flow through filter vessel
• High through puts, low NTU levels
• Small footprint; VPL vessel, mix tank, pumps, all in one skid
• All wetted parts stainless steel 316L
• Closed system
• Large filtration area systems
• Full pneumatic operation
• Design code frame: DNV 2.7-1

BENEFITS

•  Min. risk operators
• Min. down time
• No heavy work
• High efficiency
• Less usage of polish filters
• Min. deck space required
• Less maintenance
• Min. risks operators and environment
• Heavy brines
• Easy operation of unit
• High temperature fluid’s 

STANDARD DESIGN FEATURES

• Design pressure - 10 bar (150 psi)
• Design temperature - 70 deg.C (176 F)
• Construction material vessel & piping - stainless steel 316L
• Construction material filter leafs - stainless steel 316L (or polypropylene cloth)
• Required utilities - compressed air, 7 bar (105 psi), wash water min. 20m3/hr at 3 bar (45psi)
• Instruments - pressure gauges, fl ow meter, DP gauge
• Agitation system - air
• Frame & Lifting - forklift pockets and lifting sling

OPTIONAL DESIGN FEATURES

• Combination: the compact combination unit contains a VPL and dual pod cartridge filter in one frame.
• No rig-up onsite required and saves footprint.
• Self containing VPL: one frame with D.E. filter vessel, mix tank, cartridge unit, diesel driven c-pump and air compressor.
• Dual execution for continuous operation.

FILTER PRESS

For many years the Filter Press has been the workhorse in the Oilfield Industry. The robust design and construction allows a wide range of filtration applications. Our press is specifically designed for filtration of completion-, work over- and gravel pack fluids.

STANDARD DESIGN FEATURES

• Recessed plates (gasketed)
• Pneumatic/hydraulic closing system
• Unique filter cloth design with improved inlet construction
• All wetted parts stainless steel and PP
• Closed system, drip free construction
• Wide range of Filter Press types

BENEFITS

• Drip free plates/system
• Automatic opening and closing
• Low NTU effluent, high flow rate
• Less maintenance/corrosion resistant
• Save and environmentally friendly
• Heavy brines 

STANDARD DESIGN FEATURES SLURRY SKID

• Design pressure - 10 bar (150 psi)
• Design temperature - 70 deg.C (176 F)
• Construction material vessel & piping - stainless steel 316L
• Required utilities - compressed air, 7 bar (105 psi)
• Instruments - pressure gauges
• Agitation system - air
• Frame & Lifting - forklift pockets and lifting sling
• Piping - inline manifold
• Capacity - 10 BBL

OPTIONALS

• Dual slurry skid (2x 15 BBL)
• Stackable slurry skid/cartridge filter unit

FLUID POLISHING AFTER D.E. FILTRATION: DUPLEX CARTRIDGE FILTER UNIT

We would recommend to use our TDW 610 50/40 duplex cartridge filter unit with 2 micron absolute filter caridges as a guard or polishing filter after the VPL or FP units. Each TDW pod contains 50 filter cartridges with a length of 40”, which results in long filtration runs and continuous flow.