System for multidirectional information transmission between at least two units of a drilling assembly

A system for transmitting information between at least two units of a drilling rig during a drilling operation, said system comprising:

• a drill string having a drill bit subassembly disposed at one end an electric motor subassembly for providing power to said drill bit subassembly, and at least one other subassembly;
• means situated along the drill string for providing electrical energy to said motor and for providing multi-directional communication between one unit which is said drill bit subassembly and at least one other unit which is said at least one other subassembly during the drilling operation,
• wherein said drill bit subassembly and said at least one other subassembly share a common reception frequency and a common transmission frequency, said reception and transmission frequencies being different from a frequency of power supplied to said power supply means, thereby allowing power transmission and two way communications between said subassemblies and the surface, and
• wherein said drill bit subassembly and said at least one other subassembly are each allocated a different address to allow separate communications between the surface, said drill bit subassembly, and said at least one other subassembly over the common reception frequency.