High-speed, cost-effective centrifuge
The M-I SWACO 414 CENTRIFUGE is engineered to deliver high performance at low operating costs for both oilfield and industrial applications. This highly efficient decanting centrifuge recovers 95 percent of barite and returns it to the active system, while rejecting finer, low-gravity solids. The advanced design of the stainless steel bowl and scroll maintains an even layer of conveyed solids for more uniform separation and maximum solids-control efficiency.
The M-I SWACO 414 Centrifuge has 14.0 in. diameter and 34.0 in length (353-mm x 860-mm) with a stainless steel bowl and conveyor assembly. The variable speed main drive is v-belt driven through a torque converter by a 25-hp, explosion-proof, electric motor. The main drive (1,600-3,300 rpm) bowl speeds are easily changed with the variable-step sheave arrangement. The differential or back drive is v-belt driven by a 7.5-hp, explosion-proof, and electric motor. The differential speed of the conveyor can be adjusted from -18 to a maximum of +85 rpm.
The 414 CENTRIFUGE consists of a contour bowl assembly that includes hardfacing protection in the feed zone, tungsten carbide discharge ports and hardfaced conveyor flights. A two-step planetary 3.5-knm gearbox with a 57.1:1 ratio drives the centrifuge. Additional overload protection is provided with a mechanical clutch and safety shutdown devices.
Features
- Balanced scroll design increases recovery capacity
- High centrifugal force generates centrifugal force of 500 G’s at its operating speed of 1,600 RPM while processing up to 140 GPM (530 L/min)
- Efficient operation processes up to 140 GPM (530 L/min) with a 6- to 10-micron cut on weighted mud systems; processes up to 250 GPM (946.4 L/min) with a 5- to 7-micron cut point on unweighted mud
- Stainless steel bowl, scroll compartment and cover to resist corrosion and abrasion
- Tungsten-carbide scroll points with wide spacing flights at the narrow end create a finer layer of conveyed solids for more uniform separation under high G-forces
- Precision balanced to run at high RPMs for extended periods with greater efficiency, minimizing maintenance and downtime
- Operating safety controls include self-limiting vibration and torque switches to protect against catastrophic failure
- Variable speed electro-hydraulic backdrive is available as an option
Benefits
- Recovers 95 percent of barite, minimizing costly additions while maintaining prescribed mud weights
- Rejects finer, low-gravity solids from drilling fluids
- Cost-efficient operation reduces discard volume versus dilution displacement
- alternatives 30 to 60 percent depending upon mud weights Ideal for use with weighted or unweighted mud systems
- Rugged construction and corrosion-resistant materials provide long service life and low maintenance costs in the toughest oilfield environments
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