High capacity filtering screen

US10137389B2 · kind B2 · utility

Assignees

• M-I L.L.C. · US
• M-I Drilling Fluids UK Limited · GB

Inventors

• Eric Cady · Walton, US
• Graham Robertson · Sydney, AU
• LaTosha Moore · Richmond, US
• Claire Rosaleen Galloway McLean · Westhill, GB
• Andrew Ralph · Haddington, GB

Key dates

• Filing date: Dec 10, 2014
• Grant date: Nov 27, 2018
• Expiry date: Dec 8, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B07B2201/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filtering assembly includes a screen housing having two sidewalls and two end walls, defining a perimeter with a length and a width. The screen housing also includes a top face and a bottom face. A plurality of screen segments are positioned on the top face of the screen housing, such that the plurality of screen segments on the top face provide a screening surface area less than a total surface area of the top face, and a plurality of screen segments are positioned on the bottom face of the screen housing, such that the plurality of screen segments on the bottom face provide a screening surface area less than a total surface area of the bottom face. A total screening surface area of the filtering assembly is greater than the total surface area of the top face.