Screw
conveyor is widely used for oil & gas drilling zero discharge drilling
waste management system, the purpose is to collect and move semi-solids
materials, so you can save a lot of labors and more efficient to deal with the
drilling cuttings which should be cleaned and handling before discharge.
Installation
of screw conveyor in the drilling waste management system:
Normally
it is installed horizontally and at a slight incline which is supported by a
customized steel frame according to the distance to the vertical cuttings
dryer, but the angle is normally less than 45 degree. Too incline angle will
influence the moving efficiency of the screw conveyor.
Structure
of Screw conveyor
It
consists of a trough or tube containing either a spiral blade coiled around a
shaft, driven at one end and held at the other, or a “shaftless
spiral”, driven at one end and free at the other. Variable frequency
electric motor can be used to provide a variable speed, which is for the
different drilling cuttings conditions and required moving rate.
The
solids discharge end could be customized design according to the rigsite’s
layout, side discharge or bottom discharge.
GN
solids control standard screw conveyor
There
is hopper opening screw conveyor which is usually used to collect the cuttings
from the shale shaker, desander, desilter, decanter centrifuge. And others are
closed cover screw conveyor, and outside the U-type trough, you can choose with
the frame support or without.
We have screw diameter of 12inch, 14inch,
16inch, 18 inch for option, and the screw conveyor length is divided to
different sections, each section is connected by the bearings, each section is
standard 12ft, you can choose 2 section( 24ft), 3 sections (36ft) or 4
sections(48ft).
Auger
is developed as a traditional drill cuttings transferring method, more and more
people choose cuttings pump or vacuum unit to replace it.