Method and apparatus for remotely changing flow profile in conduit and drilling bit

A method for drilling an earth borehole based on changing the environment in the borehole, the method including:

• disposing in a wellbore a drill bit attached to a tubular string, the drill bit including an apparatus, the apparatus comprising:
• a nozzle adapted for use in a rotary drill bit for drilling Earth borehole, the nozzle comprising:
• a body configured to be secured within the rotary drill bit,
• at least one fluid passage of variable geometry through the body for connecting a fluid through the body,
• an orifice disposed within the body, in fluid communication with the at least one fluid passage and the borehole, and
• a means for changing the geometry of the at least one fluid passage having at least one movable element, in fluid communication with the fluid passage and the orifice, wherein the at least one movable element is movable from an initial position to at least one other predetermined position in response to intended changes in the borehole environment;
• the apparatus further comprising at least one means for detecting a plurality of intended changes in at least one physical property of the borehole environment, said plurality of intended changes functioning as a detectable signal, the means for detecting the plurality of intended changes in at least one physical property of the borehole environment further being configured to interpret the signal;
• a means for actuating the means for changing the geometry of the at least one fluid passage, wherein the means for actuating the means for changing the geometry of the at least one fluid passage is operationally linked to the means for detecting the plurality of intended changes in at least one physical property of the borehole environment;
• and
• a means for powering the means for actuating the at least one movable element;
• the method further comprising causing a change in at least one physical property within the borehole environment in certain sequence within a specified period of time resulting in a detectable pattern at the at least one detecting means;
• and
• causing the actuating means to use the energy provided by the powering means to change the geometry of the at least one fluid passage within the nozzle.