Screen assembly for vibratory separators

A method to separate components of a flow including fluid with a vibratory separator apparatus, the vibratory separator apparatus comprising a frame, at least one screen assembly positioned within the frame for introduction thereon of said flow including fluid to separate components thereof, at least one vibrator connected to the frame for vibrating the frame and the at least one screen assembly, the method comprising

• introducing the flow including fluid onto the screen assembly, a first screen portion having a top surface and a first end and a second end spaced apart from the first end, a second screen portion connected to the second end of the first screen portion, the second screen portion projecting down at an angle from the second end of the first screen portion, the first screen portion having first screening material thereon with a plurality of spaced-apart holes through which fluid is passable, the second screen portion having second screening material thereon with a plurality of spaced-apart holes through which fluid is passable, the second screening material at an angle to the first screen portion, the second screening material at an angle to the first screening material, the first screen portion adjacent the second screen portion so that a flow including fluid flowing from the top surface of the first screening material flows down onto the second screening material for separation of fluid by the second screening material from said flow including fluid, at least one raised portion projecting upwardly from the first screen portion, and wherein the at least one raised portion has a top part at least four inches above the first screen portion, and
• separating components of said flow including fluid with the first screen portion.