Slurry injection system and method for operating the same

A method of operating a slurry injection system comprising a low pressure clear fluid manifold, a high pressure clear fluid manifold, a plurality of clear fluid pumps, a blender unit having an outlet, a mixer, a bypass pump and a slurry pressurizer comprising:

• receiving low pressure clear fluid from the low pressure clear fluid manifold at the plurality of clear fluid pumps;
• pressurizing the low pressure clear fluid into high pressure clear fluid at the plurality of clear fluid pumps;
• communicating the high pressure clear fluid into the high pressure clear fluid manifold from the plurality of clear fluid pumps;
• communicating high pressure clear fluid from the high pressure clear fluid manifold to the mixer;
• communicating the high pressure clear fluid from the high pressure clear fluid manifold to the slurry pressurizer using a bypass pump;
• pressurizing, by the slurry pressurizer, low pressure slurry from the blender unit using high pressure clear fluid from the high pressure clear fluid manifold to form high pressure slurry;
• communicating low pressure fluid from the slurry pressurizer to the low pressure clear fluid manifold;
• communicating high pressure slurry from an outlet of the slurry pressurizer to a mixer;
• generating a flow rate signal of the low pressure slurry and a density signal corresponding to a density of the low pressure slurry;
• blending, at a mixer, the high pressure slurry with high pressure clear fluid to form a slurry mixture;
• communicating the mixture to a slurry injection site;
• and
• controlling an operation of the bypass pump in response to the flow rate signal and the density signal to control a density of high pressure slurry.

A slurry injection system comprising:

• a low pressure clear fluid manifold;
• a high pressure clear fluid manifold;
• a plurality of clear fluid pumps receiving low pressure clear fluid from the low pressure clear fluid manifold and pressurizing the low pressure clear fluid into high pressure clear fluid and communicating the high pressure clear fluid into the high pressure clear fluid manifold;
• a blender unit having low pressure slurry therein;
• a mixer in fluid communication with the high pressure clear fluid manifold;
• and
• a slurry pressurizer in fluid communication with the high pressure clear fluid manifold, the mixer, the blender unit and the low pressure clear fluid manifold, said slurry pressurizer forming high pressure slurry by pressurizing the low pressure slurry from the blender unit using high pressure clear fluid from the high pressure clear fluid manifold, said slurry pressurizer communicating high pressure slurry to the mixer and communicating low pressure clear fluid to the low pressure clear fluid manifold and the low pressure clear fluid to the blender unit;
• said mixer mixing the high pressure slurry and high pressure clear fluid from the high pressure clear fluid manifold to form a mixture that is communicated to a slurry injection site.