Tunable wellbore pulsation valve and methods of use to eliminate or substantially reduce wellbore wall friction for increasing drilling rate-of-progress (rop)

A tunable wellbore pulsation valve for reducing drillstring friction in a wellbore, said tunable wellbore pulsation valve comprising

• an upper valve plate and
• a lower valve plate,
• wherein said upper valve plate comprises an upper valve plate orifice enabling throughflow and said lower valve plate comprises a lower valve plate orifice enabling throughflow,
• said upper valve plate associated with a Moineau motor and shouldered against a rotor outlet of said Moineau motor, said upper valve plate rotating during fluid rotation of said Moineau motor, while said lower valve plate remains stationary, wherein said upper valve plate and said lower valve plate are configured for receiving and flowing helical fluid flow progressing centripetally outward from a central axis of said tunable wellbore pulsation valve as said helical fluid flow exits said rotor outlet of said Moineau motor,
• wherein fluid flow through a drillstring causes a first fluid state of fluid passing through both said upper valve plate and said lower valve plate when said fluid passing causes rotation of said upper valve plate to align said upper valve plate orifice with said lower valve plate orifice, and wherein said fluid flow through said drillstring further causes a second fluid state of fluid not passing through both said upper valve plate and said lower valve plate when said fluid-flow causes rotation of said upper valve plate to not align said upper valve plate orifice with said lower valve plate orifice,
• wherein said fluid flow rotationally-alternates the first fluid state and the second fluid state producing fluid pressure pulsations for transmitting axial vibration through said drillstring with the effect of reducing friction experienced by said drillstring against the wellbore wall,
• wherein said upper valve plate orifice comprises rounded corners and a straight side, wherein a semicircle overlaps the axial center of said upper valve plate and bisects said straight side,
• wherein said upper valve plate comprises an upper face-plane and a bottom face-plane, wherein said upper face-plane indicates a side facing said Moineau motor, and said bottom face-plane indicates a side facing said lower valve plate, wherein said upper valve plate orifice extends from said upper face-plane to said bottom face-plane, wherein said upper valve plate orifice comprises a nominal 2 to 10 degree orifice slope, wherein said orifice slope runs radially outward, angling outward from a perimeter of said upper valve plate orifice at said upper face-plane , wherein said upper valve plate orifice extends at a point radially close to said axial center and terminates close to an outer diameter of said upper valve plate at said bottom face-plane, wherein said upper valve plate orifice at said bottom face-plane aligns symmetrically and conforms with the shape of said lower valve plate orifice, and
• wherein said orifice slope facilitates in reducing turbulent and shear conditions and increasing laminar, outwardly radial fluid flow conditions for the fluid flowing through said tunable wellbore pulsation valve.