Sound wave receiving transducer and underground azimuth noise leak detecting device and method

Abstract

The invention provides a sound wave receiving transducer and an underground azimuth noise leak detecting device and method. The transducer is composed of a piezoelectric ceramic cylinder and a plurality of rectangular silver electrode strips, wherein the rectangular silver electrode strips cover the inner wall and the outer wall of the piezoelectric ceramic cylinder and arranged in the circumferential direction, the piezoelectric ceramic polarization direction between silver electrodes are parallel to the tangential direction of the piezoelectric ceramic cylinder, and positive electrodes and negative electrodes are formed after the piezoelectric ceramic cylinder is polarized and alternately arranged at intervals in the circumferential direction of the piezoelectric ceramic cylinder. The underground azimuth noise leak detecting device is provided with the sound wave receiving transducer. An electron bin and a data receiving and transmitting module are arranged on the upper portion of the transducer, the data receiving and transmitting module is connected with a ground system through a cable, through the piezoelectric ceramic cylinder, three modes of the transducer are superposed to form super directivity, at different moments, a test is conducted in the east, the south, the west and the north respectively through the selection of a control circuit, four super heart-shaped directivities in the horizontal direction are acquired, and therefore logging efficiency and accuracy are improved.

Description

technical field [0001] The invention belongs to the technical field of well logging, and relates to an acoustic wave receiving transducer, a downhole azimuth noise leak detection device and a leak detection method. Background technique [0002] With the rapid development of science and technology and the world economy, the strategic position of petroleum in the development of the world economy has become more and more prominent. Petroleum is a non-renewable energy source. In order to make full use of energy, we should try our best to improve the extraction efficiency and reduce the extraction loss. Especially at present, more and more oil wells in our country have entered the later stage of development, which makes the research on this issue more important and urgent. Well logging can be divided into exploration logging and production logging. Exploration logging is a preparation for production logging. Only by exploring the distribution of geological strata can production...

AI Technical Summary

Problems solved by technology

[0003] The existing traditional downhole noise leak detection devices use transducers in well logging that do not have any directivity in the horizontal direction, often resulting in missed judgments on geological structures such as faults, making the entire downhole azimuth noise leak detection and logging experimental data accurate. Accuracy cannot be guaranteed, resulting in inaccurate final logging results

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