methods for controlling the viscosity and density of a drilling fluid containing solids, apparatus for controlling the viscosity and density of a drilling fluid contained in a container, sets for use in an apparatus for controlling the density and viscosity of a fluid holes contained in a container, sets to control the viscosity and density of a drilling fluid contained in a container

摘要

method for controlling the viscosity or density of a drilling eluate and a set of mechanisms for controlling the viscosity and density of a drilling fluid. a method for controlling the viscosity (or density) of the drilling fluid containing solids, said drilling fluid circulating in a drilling fluid system, the method of which comprises the steps of; (2) feeding the drilling fluid into a container (16); (b) perception with a viscosity (or density) sensor (19) a viscosity (or density) of drilling fluid in said container (16 (and providing a representative viscosity (or density) signal); (c) in response to said viscosity (or density) signal by pumping a portion of said drilling fluid to a solids separation mechanism (40), (d) separation with said solids separation mechanism (40) from at least some of the solids from said drilling fluid portion, (e) back from said drilling fluid system drilling fluid and / or solids separated in step (d) to adjust the viscosity (or density) of said drilling fluid in the referring to the container (16).