Data transmission during drilling

摘要

A technique facilitates efficient data transfer during a drilling operation. The drilling operation involves deploying a drill string downhole and rotating a drill bit to cut a borehole into a subterranean formation. While the drill bit is on bottom, real-time sensor data is transmitted to a surface location or other suitable location via a data transmission system. The transmission of current or real-time sensor data is stopped when the drill bit is moved off bottom. While the drill bit is off bottom, previously recorded data is sent uphole.

主权项

1. A method of transmitting real-time and previously recorded data in a well, comprising:
drilling a wellbore with a drill string having a drill bit and an uplink system; providing logging data from a parameter detector located downhole with the drill string; transmitting logging data in real-time to a well surface location via the uplink system during drilling; detecting when the drill bit is off bottom; ceasing transmission of the real-time logging data while the drill bit is off bottom; transmitting previously recorded measurements from the parameter detector located downhole with the drill string via the uplink system to the well surface location while the drill bit is off bottom; subsequently determining when the drill bit is on bottom; and upon subsequently determining the drill bit is on bottom, continuing transmission of logging data to the surface in real-time.