Drilling fluid solid phase particles type, size
and content are great influence to drilling fluid performance, so we must
according to the drilling process requirements do suitable control. In solids
control process, main equipments are very important, directly influence the
whole solids control effect. These equipments include Shale Shaker, Vacuum
Degasser, Mud Cleaner and Centrifuge.
Shale Shaker as the first-level solids control equipment in the drilling
fluid process, first clean up the larger solid particles in the drilling fluid
which returned from shaft bottom, it is fit for the screening of various kinds
drilling fluid. Shale shaker is the necessary equipment in the well drilling
equipments at present. Moreover, the job content of shale shaker will direct
influence on the desander, desilter and centrifuge.
Vacuum Degasser uses the suction function of the vacuum pump to form the
negative pressure in the vacuum tank. Under the pressure of atmosphere, the
drilling fluid enters into hollow shaft from suction line, and then to be
gathered by the umbrella slices around of the hollow shaft to toss to tank skin
in spurting. With the impact of vacuum and bubble centrifuge, the bubble will
be broken in the drilling fluid, the gas will escape and suction out by the
vacuum pump and vent to the safety zone.
Mud Cleaner is mainly used for eliminating the drilling cuttings and
particles which are larger than the particle size of barite from the weighted
drilling fluid. The weighted drilling fluid still has many low-density solid
particles after the first level treatment by shale shaker. At this time, if
handling by using the swirler alone, the barite will run off in abundance. The
advantage of using drilling mud cleaner is reducing the content of the
low-density solid particles, and avoiding a lot of loss of barites.
Centrifuge is the special equipment of solid-liquid separation, designed by the
characteristic of drilling fluid. It can accomplish each procedure of feed, centrifugal sedimentation,
unloading, etc. It mainly uses for recycling
barite, eliminating small solid, reducing the solid content of drilling fluid,
controlling the density and viscosity of drilling fluid, ensuring the
performance of drilling fluid, and play an important role in quick drilling.
All above are the main equipments for solids control system, any
questions please contact DC Machinery freely.