While-drilling ultrasonic probe assembly and while-drilling ultrasonic detection method

• Main Authors: WU HAIYAN, YAN LIPENG, ZHENG YITING, WU JINPING, LI JIBO, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention provides a while-drilling ultrasonic probe assembly and a while-drilling ultrasonic detection method. The while-drilling ultrasonic probe assembly comprises a drill collar skeleton connected with a drill collar, a plurality of annular phased array probes, and an acoustic transmission protection cover; the multiple annular phased array probes are circumferentially distributed in the drill collar skeleton, and a continuously adjustable acoustic beam is formed within a certain range of a focus area when signals are transmitted and received; and the acoustic transmission protection cover is connected to the outer wall of the drill collar skeleton and arranged corresponding to the probes in position, and the acoustic transmission protection cover is provided with a channel facilitating transmitting and receiving of the acoustic beam. The while-drilling ultrasonic probe assembly can be used under the while-drilling condition to form well wall imaging with the controlled acoustic beam focus area so as