Extractor Dryer ( Scomi )

Concept
The Oiltools EXTRACTOR Dryer consists of a horizontally configured conical screen placed within a balanced cage that is driven at high speed via an electric motor through a Cyclo-Gear drive gearbox. Positioned within the cage is a scroll that turns and transports the filtered solids from the machine to obtain maximum cuttings dryness. The conical basket contains a proprietary screen specially designed to minimise screen blinding. The unit is attached to an isolated sub-frame
which in turn is mounted on a rugged Oilfield skid for transport.
The Oiltools EXTRACTOR Dryer receives drill cuttings from the Solids Control equipment via screw conveyor, vacuum system. and/or solids pump. Drill cuttings are fed into the center of the feed cone and distributed evenly through feed holes by centrifugal action into the flighting channels between the scroll and the screen. As the drill cuttings pass through the conical screen, the solids layer
becomes thinner and exposed to progressively more G-force. The high gravitational force allows the liquid por tion of the feed to pass through the cake bed and screen while the cake bed itself is continuously turned and swept outward to be discharged at the outer diameter of the screen. The dried drill cuttings exit from the front of the machine where they are either discharged to the environment or collected for further handling and/or treatment. The effluent exits tangentially from the base of the unit into a holding tank. This effluent is normally processed via a high speed centrifuge prior to return to the active system.


Application
The EXTRACTOR Dryer can be utilised to reduce the liquid content of drill cuttings to a level that allows discharge to the environment or as preparation for bio-remediation. Discharge criteria may be economically driven but are more often driven at a local level by legislative requirements. This will typically be expressed as Retained Oil on Cuttings (ROC) or Oil on Cuttings (OOC) discharge criteria. The Extractor also functions as insurance against whole mud losses from
the shakers. It is able to capture and return valuable drilling fluid to the
active system should the situation arise.



Features
Horizontal basket - easier access for feed and maintenance. Scroll - Internal Scroll acts as a solids retention device to control solids discharge. Screen - proprietary screen design minimises particle plugging. Precision balanced and rounded screen cage for closer scroll to screen tolerance.Optimal ‘G’ force of 375 ‘G’s. Explosion proof Cyclo-Gear drive for high torque. Resettable torque overload protection.
Belt drive c/w Anti-Static belts. Ports for sampling.


Benefits
• Lower operator intervention due to:
- Superior feed system.
- Horizontal design allowing easier access.
- Reduced screen blinding/caking.
• Lower maintenance
- Screen basket does not need to be removed to be cleaned.
- Improved rotational balance minimises wear on rotating parts.
- More durable, longer wearing scroll, due to 1-piece construction.
- Cyclo-Gear drive has a 2-year warranty . . . show negligible wear after 50,000hours.
• Reduced Environmental impact
- Lower power requirements - due to low friction
Cyclo-Gear drive (input/output efficiency approaches 95%).
- Lower noise - due to v-belt and Cyclo-Gear drive.
• Reduced size
- Footprint - smaller than equivalent vertical type dryers
- Minimised height - due to horizontal feed.
- Cyclo-Gear reducer drive up to 60% smaller than worm-drive allows smaller motor to be utilised thusoverall power train reduced.