Subassembly for a directional drilling system

A subassembly for a directional drilling system configured to drill a wellbore, the subassembly comprising:

• a drill bit configured to rotate about a longitudinal axis of the subassembly in a first direction, the drill bit comprising an inlet for receiving drilling fluid and an outlet for allowing drilling fluid to exit the drill bit;
• a flow diverter configured to rotate about the longitudinal axis of the subassembly in a second direction, wherein the flow direction of drilling fluid exiting the drill bit is determined by a rotary position of the flow diverter about the longitudinal axis of the subassembly;
• a housing portion connected to the drill bit;
• a motor assembly positioned within the housing portion, the motor assembly comprising a motor assembly housing rotatably fixed to the housing portion and a drive shaft rotatable relative to the motor assembly housing, the drive shaft being coupled to the flow diverter;
• and
• wherein the motor assembly is configured to operate the drive shaft to control the rotary position of the flow diverter.

A directional drilling system comprising:

• a drill string;
• and
• a subassembly comprising:
• a drill bit configured to rotate about a longitudinal axis of the subassembly in a first direction, the drill bit comprising an inlet for receiving drilling fluid and an outlet for allowing drilling fluid to exit the drill bit;
• a flow diverter configured to rotate about the longitudinal axis of the subassembly in a second direction, wherein the flow direction of drilling fluid exiting the drill bit is determined by a rotary position of the flow diverter about the longitudinal axis of the subassembly;
• a housing portion connected to the drill bit;
• a motor assembly positioned within the housing portion, the motor assembly comprising a motor assembly housing rotatably fixed to the housing portion and a drive shaft rotatable relative to the motor assembly housing, the drive shaft being coupled to the flow diverter;
• and
• wherein the motor assembly is configured to operate the drive shaft to control the rotary position of the flow diverter.

A kit of parts for forming a subassembly for a directional drilling system configured to drill a wellbore, the kit of parts comprising:

• a drill bit comprising an inlet for receiving drilling fluid and an outlet for allowing drilling fluid to exit the drill bit;
• a flow diverter;
• a housing portion connectable to the drill bit;
• and
• a motor assembly positioned within the housing portion, the motor assembly comprising a motor assembly housing rotatably fixed to the housing portion and a drive shaft rotatable relative to the motor assembly housing and wherein the drive shaft is couplable to the flow diverter.