Environment-based telemetry system

A telemetry system for use with a bottom hole assembly (BHA) of a downhole drilling system, comprising:

• a logging while drilling (LWD) system including a memory for storing drilling data;
• and
• a processor configured to activate the LWD system to store drilling data to the memory upon a determination by the processor that
• the BHA has changed from a horizontal position to a vertical position.

A method of using a bottom hole assembly (BHA) with a downhole measurement-while-drilling (MWD) system, the method comprising:

• providing a BHA including:
• a drill bit having a cutting face;
• a downhole telemetry system for communicating drilling information to the surface;
• a sensor configured for monitoring at least one physical parameter of the BHA;
• a processor configured for executing the computer instructions, wherein the computer instructions are configured for collecting the data from the sensor and analyzing the data to determine whether a physical condition has been met;
• assembling the BHA at a remote location;
• powering up and testing the assembled BHA at a remote location;
• switching the BHA into a transport mode where the BHA is powered on but the downhole telemetry system is not transmitting;
• transporting the assembled BHA to a drill site while the BHA is in the transport mode;
• connecting the BHA to a drill string and using it to begin drilling a wellbore;
• wherein the at least one physical parameter of the BHA monitored by the sensor provides an indication that the BHA is being used at the drill site and wherein the processor, upon a determination that the BHA is in use at the drill site, causes the downhole telemetry system to begin transmitting.