While-drilling acoustic logging sound insulation device

• Main Authors: LIU BIN, WEI QIAN, CHE CHENGXUAN, CONG JIANSHENG
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2019
• 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 discloses a while-drilling acoustic logging sound insulation device. The while-drilling acoustic logging sound insulation device comprises a drill collar and sound attenuation materials;a certain number of through holes arranged in a periodic staggered mode are formed in the drill collar in the axial direction, the through holes are filled with the sound attenuation materials, end covers are arranged at the two ends of the through holes correspondingly, and each end cover is attached to the outer wall of the drill collar. According to the while-drilling acoustic logging sound insulation device, continuity of the inner wall and the outer wall of the drill collar can be ensured, strong erosion of downhole mud is effectively prevented, the mechanical strength of an instrument is improved, and the service life of the instrument is prolonged; a mass-spring-damping system principle is adopted, the through holes in the wall of the drill collar are filled with the sound attenuation materials, and throug