Check valve for well stimulation

A check valve assembly comprising:

• a valve body providing a cylindrical section that defines one or more valve body discharge ports, the valve body defining an inlet and a cylindrical passageway that fluidly communicates the inlet with the one or more valve body discharge ports, wherein the inlet comprises a plurality of conduits that extend through the valve body at an angle between perpendicular and parallel to a central axis of the cylindrical passageway;
• a valve cap coupled to the valve body and extending about an outer circumference of the cylindrical section, wherein the valve cap covers an end of the cylindrical section and defines an opening that fluidly communicates with the cylindrical passageway;
• one or more valve cap discharge ports extending radially through the valve cap and alignable with the one or more valve body discharge ports about the outer circumference of the cylindrical section, wherein the valve cap is movable with respect to the valve body to selectively align and misalign the one or more valve cap discharge ports with the one or more valve body discharge ports;
• one or more additional valve cap discharge ports extending radially through the valve cap and angularly offset from the one or more valve cap discharge ports, the one or more additional valve cap discharge ports being alignable with the one or more valve body discharge ports;
• a piston disposed within the cylindrical passageway and movable between a closed configuration, where the piston prevents fluid communication between the inlet and the one or more valve body discharge ports, and an open configuration, where fluid communication is allowed between the inlet and the one or more valve body discharge ports;
• and
• a magnet arranged within the valve body and configured to magnetically attract the piston toward the closed configuration.

An injection assembly, comprising:

• a base pipe defining a pipe opening and being arranged within a wellbore penetrating a subterranean formation;
• and
• a check valve assembly positioned within the pipe opening and including:
• a valve body providing a cylindrical section that defines one or more valve body discharge ports, the valve body defining an inlet and a cylindrical passageway that fluidly communicates the inlet with the one or more valve body discharge ports, wherein the inlet comprises a plurality of conduits that extend through the valve body at an angle between perpendicular and parallel to a central axis of the cylindrical passageway;
• a valve cap secured to the valve body and extending about an outer circumference of the cylindrical section, wherein the valve cap covers an end of the cylindrical section and defines a central opening that fluidly communicates with the cylindrical passageway;
• one or more valve cap discharge ports extending radially through the valve cap and alignable with the one or more valve body discharge ports about the outer circumference of the cylindrical section, wherein the valve cap is movable with respect to the valve body to selectively align and misalign the one or more valve cap discharge ports with the one or more valve body discharge ports;
• and
• a spherical piston disposed within the cylindrical passageway and movable between a closed configuration, where the spherical piston prevents fluid communication between the inlet and the one or more valve body discharge ports, and an open configuration, where fluid communication is allowed between the inlet and the one or more valve body discharge ports.