Oil well drilling and gas well drilling mainly mean the
petroleum drilling and natural gas drilling. They both are vertical well
drilling. And the depth from 2000m/6561ft to 9000m/29527ft. Let’s find
similarity and difference between high speed centrifuge and VFD
centrifuge.
We know, centrifuge in drilling fluid process is also
called decanter centrifuge, decanting centrifuge or centrifuge decanter.
There are many types centrifuge as per different division way.
If according to centrifuge speed there will be low speed
centrifuge, middle speed centrifuge and high speed centrifuge, as well
as the VFD high speed centrifuge.
High speed decanter centrifuge
speed is up to 2800~3200rpm. And thanks to its speed, it can separate
solids size 2~5 microns out of drilling fluid. Furthermore, high speed
drilling fluid decanter centrifuge is widely used in barite recycling
system.
High speed decanting centrifuge
will have smaller bowl diameter to cater higher speed result. If the
centrifuge bowl diameter is as long as 450mm or even longer, it can be
only middle speed or low speed centrifuge.
VFD Decanter centrifuge means the variable frequency
driven centrifuge. Almost users or players in oil and gas drilling will
know that the VFD centrifuge is based on the high speed decanter
centrifuge. So, we also call VFD centrifuge as VFD high speed
centrifuge.
That means the VFD Centrifuge speed will be 0~3200rpm.
And it will separate 2~5microns out of drilling mud same as common high
speed centrifuge.
While, VFD to decanter centrifuge has two option. One is
VFD for the centrifuge motors only; the other is VFD on both centrifuge
motor and centrifuge feeding pump motor.
To VFD high speed centrifuge the control panel is rather
important. Actually, the difference between VFD centrifuge and common
high speed centrifuge is the control panel. We improve or make control
panel realized VFD through one or some parts in the cabinet.
Furthermore, if the VFD centrifuge is used in some
special working condition with super high ambient temperature, we should
consider match cabinet with cooling system together to ensure the
safety without flame, etc.
The same features between high speed centrifuge and VFD centrifuge
As we said, both of them are high speed decanting
centrifuge. They are widely used in oil and gas drilling. They both can
get rid of 2~5microns particles. High speed centrifuge and VFD
centrifuge will be set after drilling mud cleaner or the desilter
Both centrifuges will be fed by pumps from
cleaner/desilter compartment to centrifuge feed inlet. They have almost
the same design on structure, main parts, etc.
Firstly, VFD decanter centrifuge is variable frequency
or speed driven. It has more flexibility when operator or supervisor run
centrifuge according to different mud property and actual working
conditions.
Then, some VFD centrifuge will request feeding pumps are VFD as well.
Above information described general content
on high speed centrifuge and VFD centrifuge. If you need more info or
you have any advice on it please let us know. We can discuss and improve
together.
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