Do oil people measure viscosity?

NEED HELP for my research paper.. so if u could please answer so i can continue this paper it's due friday...Do oil people measure viscosity?
To produce oil products, the oil companies have to transport crude and other components through pipes, filters, headers, valves and many other pieces of equipment. In order to do this efficiently, the viscosity of the different fluids must be known. Knowing the viscosity is critical in determining the correct horsepower for the pumps and compressors used in these fluid transport processes.Do oil people measure viscosity?
yes