ELECTROMAGNETIC TELEMETRY SYSTEM WITH COMPENSATION FOR DRILLING FLUID CHARACTERISTICS

摘要

A downhole apparatus for measuring drilling fluid characteristics. The downhole apparatus may comprise one or more sensors located within a housing. The sensors may include one or more of an imaging device, a resistivity/conductivity sensor, a temperature sensor, a pressure sensor, a flowmeter and a fluid density sensor. The downhole apparatus may also include a controller for receiving measurements and/or determining optimal electromagnetic telemetry transmission settings. The downhole apparatus may also comprise a transmitter for transmitting the measurements and/or the optimal electromagnetic transmission settings. The downhole apparatus may be operated to determine optimal transmission settings for an electromagnetic telemetry system. Optimal transmission settings may include settings relating to one or more of frequency, amplitude, voltage, current, and power.

主权项

1. A method for optimizing electromagnetic telemetry, the method comprising:
measuring one or more drilling fluid characteristics at a downhole location; determining optimal transmission settings for an electromagnetic telemetry system based on at least one of the one or more drilling fluid characteristics; transmitting the optimal transmission settings to one or more electromagnetic transmitters; and operating the electromagnetic telemetry system according to the optimal transmission settings.