Method, system, and apparatus of downhole time interlaced communications

摘要

A method, system, and apparatus of downhole time interlaced communications are provided. The method includes setting command intervals for first and second communications systems associated with downhole tools. Each command interval is a delay value between consecutive commands greater than an actual command duration to define periods of communications inactivity. The command interval of the second communications system is slightly greater than that of the first to overcome any drift. The method includes detecting communications interference between the systems and applying temporarily a positive command interval shift to the first communications system and a negative command interval shift to the second communications system so that a duration of a resynchronization is minimized. An apparatus for downhole time interlaced communications includes a configurable communications interface card to communicate with surface equipment, having a command interval register and a command interval shift register that is applied temporarily when communications interference is detected.