High pressure static mixer

A high-pressure static mixer, comprising:

• a clean fluid port positionable to receive clean fluid from a clean fluid system at a first fluid velocity and at a first pressure, the clean fluid system comprising:
• a fluid blender;
• and
• a first pump positionable to receive the clean fluid from the fluid blender and to output the clean fluid to the clean fluid port;
• a proppant concentrate port positionable to receive a proppant concentrate from a proppant fluid system at a second fluid velocity that is less than the first fluid velocity and at a second pressure that is higher than the first pressure, the proppant fluid system comprising:
• a proppant blender for blending a proppant with a carrier fluid to generate the proppant concentrate;
• and
• a second pump positionable to receive the proppant concentrate from the proppant blender and to output the proppant concentrate to the proppant concentrate port;
• and
• a mixing region positionable to mix the clean fluid with the proppant concentrate to produce a mixed fluid and to output the mixed fluid at a third fluid velocity.

A method, comprising:

• receiving clean fluid at a first flow rate and at a first pressure at a clean fluid port of a high-pressure static mixer from a clean fluid system, the clean fluid system including a fluid blender and a first pump positionable to receive the clean fluid from the fluid blender and to output the clean fluid to the clean fluid port;
• receiving proppant concentrate at a second flow rate less than the first flow rate and at a second pressure less than the first pressure at a proppant concentration port of the high-pressure static mixer from a proppant fluid system, the proppant fluid system including a proppant blender for blending a proppant with a carrier fluid to generate the proppant concentrate and a second pump positionable to receive the proppant concentrate from the proppant blender and to output the proppant concentrate to the proppant concentration port;
• mixing clean fluid and proppant concentrate at a mixing region of the high-pressure static mixer to generate a mixed fluid;
• and
• outputting the mixed fluid from the mixing region to a wellhead or a mixed fluid manifold.