Patent ID: 7686102

Claim:
A motor for a downhole tool comprising: a cylindrical control sleeve; a power shaft; said power shaft at least partially surrounded by said control sleeve; said power shaft rotatable in relation to said control sleeve; said power shaft having a power shaft wall; said power shaft having an interior power shaft channel; at least one opening provided in said power shaft wall; said at least one opening in fluid communication with said power shaft channel; said control sleeve having an interior control sleeve surface; said at least one opening in said shaft wall having an opening axis; said opening axis oriented toward said control sleeve surface; said power shaft having a power shaft axis and upper and lower ends; said opening axis of said at least one opening in said power shaft wall acutely oriented in relation to the direction of the upper end of said power shaft, and obtusely oriented in relation to the lower end thereof; said at least one opening having an interior opening; said opening axis of said at least one opening in said power shaft wall acutely oriented with respect to a plane passing through said power shaft axis and said power shaft wall at said interior opening; said control sleeve connected to an upper subassembly; said upper subassembly connectable to a drill string; said upper subassembly having an interior upper channel; an injection tube providing fluid communication from said interior upper channel to said power shaft channel; said injection tube comprising a tube head and a tube; said tube head disposed within said upper subassembly; said tube extending into said power shaft channel; and wherein said injection tube having a lower tube end and an opposite upper tube end, wherein said injection tube is connected to said upper subassembly at said upper tube end.