Screen with ramps for vibratory separator system

A screen for a vibratory shaker, the screen comprising

• at least one layer of screening material,
• at least one ramp formed in the at least one layer of screening material, and
• the at least one ramp having an upwardly projecting portion and further comprising part of the at least one layer of screening material folded and positioned on the at least one layer of screening material at an angle to a direction of fluid to be flowed over the screen so that at least a portion of the fluid will pass up and over the upwardly projecting portion, the fluid having solids entrained therein to be separated from the fluid by the screen and by the at least one ramps, the upwardly projecting portion at an obtuse angle to the at least one layer of screening material.

A screen for a shale shaker for separating solids entrained in drilling fluid, the screen assembly comprising

• a base,
• a plurality of connected layers of screening material on the base, and
• a plurality of spaced-apart ramps connected to at least one layer of the plurality of layers of screening material, each ramp made of screening material for separating solids entrained in the drilling fluid and each ramp having an upwardly projecting portion and further comprising a lower portion, the lower portion at an obtuse angle to the upwardly projecting portion, the lower portion connected to the at least one layer of screening material and positioned on the at least one layer of screening material at an angle to a direction of fluid to be flowed over the screen so that at least a portion of the fluid will pass up and over the upwardly projecting portion, the fluid having solids entrained therein to be separated from the fluid by the screen and by the plurality of spaced-apart ramps.

A screen for a shale shaker for separating solids entrained in drilling fluid, the screen assembly comprising

• a base,
• a plurality of connected layers of screening material on the base, and
• a plurality of spaced-apart ramps formed of at least a top one of the plurality of layers of screening material, each ramp having an upwardly projecting portion and further comprising part of the at least one layer of screening material folded and positioned on the at least one layer of screening material at an angle to a direction of fluid to be flowed over the screen so that at least a portion of the fluid will pass up and over the upwardly projecting portion, the fluid having solids entrained therein to be separated from the fluid by the screen and by the plurality of spaced-apart ramps, the upwardly projecting portion at an obtuse angle to the at least one layer of screening material.