Principle of MWD/LWD high temperature battery

The key to the high temperature battery used in oil wells is how to meet the requirements of the high temperature environment in the well and ensure the safe and reliable operation of the lithium battery.

In order to meet the high temperature requirements, the following factors should be considered:

(1) Thermodynamic properties of battery contents
(2) Mechanical properties of battery shell
(3) Safety design suitable for high temperature environment (anti-short circuit, anti-reverse pole, anti-charging, anti-shock, anti-vibration, etc.)

(4) Electrical performance design suitable for high temperature environment (ratio of positive and negative active materials, selection of electrode thickness, selection of additives, etc.)

According to the above four aspects, a mathematical model is established. The design problem of high-temperature batteries is theoretically solved. Under the premise of given technical requirements, the primary design parameters can be quickly given by mathematical calculation methods, and the final battery design parameters can be determined through primary and secondary battery practical experiments. , and then through batch experiments, small changes can be made to meet the requirements of production stereotypes.