Page 138 - Shale Shakers Drilling Fluid Systems

SHALE SHAKER SCREENS 121

FIGURE 6-1

valleys and the vertical surfaces provide additional of the screen performance. The following describes
area for drilling fluid to pass. This increases the terms presently used within the industry, which
fluid capacity of a particular mesh size when com- resulted in a better screen designation system.
pared with a flat surface screen. Plain square and rectangular weaves are often
referred to by the number of wires (or openings)
in each direction per linear inch. This is known as
Screen Identification the mesh count. The mesh count is determined by
starting at the center of one wire and counting
The nomenclature used to discuss screens is the number of openings along the screen grid
important in obtaining an accurate representation to the next wire center, one linear inch away. For