Vertical Cuttings Dryer

Cuttings leaving the shale shaker still carry drilling fluid. Recovering that fluid reduces mud losses and lowers the volume and weight of waste sent for disposal.

The TR Vertical Cuttings Dryer uses high-speed centrifugal separation to recover drilling fluid from wet cuttings. It is mainly used for oil-based mud (OBM) and synthetic-based mud (SBM) cuttings and can be integrated into drilling waste treatment systems.

How the Cuttings Dryer Works

Wet cuttings are typically delivered by a screw conveyor to the rotating screen basket.

As the basket rotates at high speed, centrifugal force drives the drilling fluid through the wedge-wire screen, while the solid cuttings are retained on the inner surface of the screen. The internal flights rotate in the same direction but at a lower speed than the basket. This speed differential keeps the cuttings from rotating with the basket and moves them along the screen toward the solids discharge.

The recovered fluid may still contain fine solids. In a complete mud treatment system, it can pass through a decanter centrifuge for further fine-solids removal before returning to the active mud system.

Key Features

1. High-G Separation: Up to 900 rpm and 420G for effective drilling fluid separation.

2. High-Chrome Flights: High wear resistance for abrasive cuttings and long service life.

3. High-Pressure Air Knife: Keeps the screen basket clear and helps reduce screen blinding.

4. Dynamic-Balanced Components: Replaceable rotating parts are individually balanced for smooth operation after replacement.

5. Independent Oil Cooling System: Separate oil circulation and cooling for reliable operation at high temperatures.

Drill Cuttings Dryer Technical Specifications

Cuttings Dryer Applications

Selection Guide

• Capacity

  Size the dryer for peak cuttings throughput rather than average drilling rate.

• Screen Slot

  Select the wedge-wire slot based on cuttings size, mud properties and the target OOC level.

• Operating Speed

  Choose fixed-speed or VFD operation according to feed variation and separation requirements.

• Site Requirements

  Confirm feed arrangement, downstream fluid handling, service access, hazardous-area classification and electrical requirements.

FAQ

Q: What OOC level can the dryer achieve?

A: The specified residual OOC is ≤5% under defined test conditions. Actual results vary with cuttings and operating conditions.

Q: Can the recovered fluid return directly to the mud system?

A: Not always. It usually passes through a decanter centrifuge for further fine-solids removal before returning to the active mud system.

Q: Is a VFD model necessary?

A: Not for every application. Fixed-speed models suit stable feed conditions; VFD models are useful when basket speed needs to change.

TR Solids Control manufactures solids control and drilling waste management equipment in Xi'an, China. The company produces vertical cuttings dryers, along with shale shakers, mud cleaners, drilling fluid centrifuges and pumps.

Integrated treatment systems can also be supplied for drilling projects. Manufacturing and quality control follow an ISO 9001 quality management system.