HDD shale shakers
The first line of defense for a properly designed solids control system is the shale shaker. Shakers remove solids from drilling fluid as the mud passes over the surface of a vibrating screen
. Particles smaller than the openings in the screen pass through the holes of the screen along with the liquid phase of the mud. Particles too large to pass through the screen are thereby separated from the mud for disposal.
Shaker screen and cut point
Without proper screening of the drilling fluid during this initial removal step, downstream equipment will experience reduced efficiency and effectiveness. The downstream hydrocyclones and/or decanter centrifuges (if employed) will simply be overloaded beyond their design capacity.
There are a number of commercial claims that indicate that shakers can achieve solid to 74 microns, however, when it comes to the practical installation and use of solids control systems (i.e. relative to flow rates, drilling fluid viscosity, screen condition, volume of solids being managed, etc.) operators should conservatively assume 100 microns as the performance limit.
In HDD solids control system, the shale shaker employed proper screen is kindly suggested as necessary equipment. We’ll configure the optimal solution for certain drilling project according to clients’ demand and budget.