Shale
shaker is a vital component of drilling
fluid processing system in many industries, such as coal cleaning, mining,
oil and gas drilling. They are considered to be the first phase of a solids
control system on a drilling rig, they are used to remove large solids also
called cuttings from the drilling fluid, more commonly called "Mud" due to its
similar appearance.
After returning to the surface of the well, the used drilling fluid flows
directly to the shale shakers where it begins to be processed. Once processed by
the shale shakers the drilling fluid is deposited into the mud tanks where other
solid
control equipment begin to remove the finer solids from it. The solids
removed by the shale shaker are discharged out of the discharge port into a
separate holding tank where they await further treatment or disposal.
The shaker
screen is equipped on the basket of shale shaker, with three or four pieces
screen panels, while the screen basket is driven by two sets of vibration motors
which are mounted on the top of shale shaker with synchronization and contrary
rotation. There exists one piece of eccentric block in the vibration motor. When
motor works, the eccentric block also rotate. As there are two sets of vibration
motors working synchronized, at some point, the vibration force that generated
by the eccentric blocks is sum of these two blocks effect force. While at some
point, the vibration force of motors would be zero.
When the viscosity of the drilling fluids increase, shale shaker process
capacity would be reduced; while when the density of the drilling fluids
increase, shale shaker capacity would also enhance. That is because when the
drilling fluids flow onto the screen, the enhanced density would place some
pressure on the screen, pushing the drilling fluids permeating the screen more
quickly.
An oilfield solids
control system needs many centrifugal
pumps to sit on or in mud tanks. The type of centrifugal pump is used as sand
pump, submersible
slurry pump, shear pump, and charging pump, all of which are important solids
control equipments. They are defined for their different functions, but
their working principle is the same.
KOSUN centrifugal pump is a kind of newly developed pump matching to solids
control equipment in petroleum, mine and drilling. It adopts axial suction
structure and overflowing parts are wear-resistant cast iron. KOSUN Centrifugal
pump is used for transferring drilling mud. It can be used as feeding pump for
desander, desilter or used as mixing pump for Jet Mud Mixer. Also it can be used
as trip pump, and supercharging pump for rig mud pump.
Features & Benefits of KOSUN Centrifugal Pump:
1. Tungsten carbide mechanical seal;
2. Impeller design that lowers axial thrust loads, and make it easier for
installation, repair and maintenance.
3. Can be worked as feed pump for desander and desilter, mixing pump for jet
mud mixer, supercharge pump for slurry pump of drilling rig.
Centrifugal pump basic components are high speed rotating impeller and fixed
snail shell shaped pump casing. With several (usually are 4 ~ 12) back curved
blades fastening on pump impeller axis, and with the pump shaft driven to do
high speed rotation. The pump impeller is directly liquid in the work parts, are
the centrifugal pump energy device. The pump casing central suction inlet and
suction piping connections, suction pipe bottom with one-way bottom valve.
Outlet beside pump shell connect wih outlet piping equipped with regulating
valve.
Like most pumps, a centrifugal pump converts mechanical energy from a motor
to energy of a moving fluid. A portion of the energy goes into kinetic energy of
the fluid motion, and some into potential energy, represented by fluid pressure
(Hydraulic head) or by lifting the fluid, against gravity, to a higher
altitude.
