TROUGH-BIT DIPOLE ACOUSTIC LOGGING TRANSMITTER AND LOGGING DEVICE

• Main Authors: WEI, Qian, LIU, Bin, CONG, Jiansheng, CHE, Chengxuan, WANG, Xiuming
• Format: Patent
• Language: Chinese; English; French
• Published: 04.10.2018
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRICITY; FIXED CONSTRUCTIONS; FOR PERFORMING MECHANICAL WORK IN GENERAL; GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL; METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PERFORMING OPERATIONS; TRANSPORTING

A transmitter (3) of a trough-bit dipole acoustic logging device, the transmitter (3) comprises a substrate (32) and two piezoelectric ceramic plates (31) respectively located on two sides of the substrate (32); each of the piezoelectric ceramic plates (31) is composed of at least one piezoelectric ceramic unit (311); the length direction of the piezoelectric ceramic unit (311) is along the width direction of the piezoelectric ceramic plate (31); the width direction of the piezoelectric ceramic unit (311) is along the thickness direction of the piezoelectric ceramic plate (31); the thickness direction of the piezoelectric ceramic unit (311) is along the length direction of the piezoelectric ceramic plate (31); the polarization direction is along the thickness direction of the piezoelectric ceramic unit (311); when an electrical excitation is applied along the length direction of the piezoelectric ceramic plate (31), the piezoelectric ceramic plate (31) on one side of the substrate (32) is elongated, and the p