Ultrasonic borehole imaging while drilling is a cutting-edge technology in the field of measurement and control for drilling. It can generate high-resolution borehole images in real time under the working conditions of drilling. The borehole images can accurately reflect borehole shape, identify fractures, pores, bedding and other characteristics, and play an important role in monitoring borehole engineering condition and quality. To summarize ultrasonic borehole imaging while drilling, based on a large number of literature research, this paper expounds the imaging principle and system components, summarizes the development process and current situation, analyzes and studies the characteristics of the latest oversea research and development of ultrasonic borehole imaging while drilling tools, and summarizes the development trend, in order to provide reference for the development of ultrasonic borehole imaging in China.

logging while drilling  /  imaging logging  /  ultrasonic imaging