Acoustic logging-while-drilling transmitting unit and device thereof

A launch unit and logging-while-drilling technology, applied in drilling equipment, measurement, drill pipe, etc., to achieve good insulation and sealing, small volume, and easy assembly

Inactive Publication Date: 2016-01-20
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a multi-pole acoustic logging while drilling transmitting device for the complex and harsh special environment of the acoustic logging while drilling transmitting transducer in the prior art

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  • Acoustic logging-while-drilling transmitting unit and device thereof
  • Acoustic logging-while-drilling transmitting unit and device thereof
  • Acoustic logging-while-drilling transmitting unit and device thereof

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0037] The acoustic logging while drilling emission device provided by the present invention has the advantages of high temperature resistance, high pressure resistance, vibration resistance, small volume, easy assembly, good insulation and sealing, and the like. And it can provide a variety of working modes, and can directly measure the parameters of formation compressional wave, shear wave, Stoneley wave sound velocity and attenuation, which can be verified by mutual reference or processed separately, which greatly improves the reliability and appl...

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Abstract

The invention relates to an acoustic logging-while-drilling transmitting unit and a device thereof. The transmitting unit comprises a drill collar chisel groove (17), a transmitting transducer (9) and an acoustic window (19), wherein the drill collar chisel groove (17) is provided with a step; the transmitting transducer (9) is arranged on the step and is used for generating acoustic waves; the acoustic window (19) is arranged on the transmitting transducer (9); the acoustic window (19) and the transmitting transducer (9) form a cavity; oil is injected into the cavity to form a liquid cavity; and the acoustic waves generated by the transmitting transducer (9) are transmitted outwards through the liquid cavity. The multi-pole acoustic logging-while-drilling transmitting device has the advantages of high temperature resistance, high pressure resistance, vibration resistance, small size, easiness in assembly, good insulation and sealing and the like.

Description

technical field [0001] The invention relates to the technical field of acoustic wave velocity measurement, in particular to an acoustic logging while drilling emitting unit and a device thereof. Background technique [0002] In recent years, with the rapid development of the global oil industry, the demand for drilling and logging of highly deviated wells and horizontal wells in oil exploration has become increasingly active, and the sonic logging while drilling technology has developed rapidly. Available in the form of logging while drilling. The sonic logging while drilling technology is to perform logging simultaneously during the drilling process, that is, "logging while drilling". This technology uses the transmitting transducer installed on the drill collar to emit sound waves during the downhole drilling operation, propagates through the mud in the formation, and after a certain period of attenuation, the receiving transducer installed on the drill collar Receiving,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/14E21B17/16
Inventor 魏倩丛健生车承轩王秀明
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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