Drilling following type acoustic logging device

An acoustic wave, while drilling technology, used in surveying, earthmoving, wellbore/well components, etc., can solve problems such as inability to accurately measure formation information, dipole wave interference, etc., to improve reliability and application range. Effect

Inactive Publication Date: 2015-07-29
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex and harsh special environment of acoustic logging while drilling, the design, manufacture and assembly of acoustic logging while drilling transducers are quite challenging
[0004] In the prior art, acoustic logging tools while drilling usually adopt monopole ...

Method used

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  • Drilling following type acoustic logging device
  • Drilling following type acoustic logging device
  • Drilling following type acoustic logging device

Examples

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] figure 1 It is a schematic diagram of a logging-while-drilling acoustic logging device provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the acou...

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PUM

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Abstract

The embodiment of the invention relates to a drilling following type acoustic logging device. The device comprises a drill collar, a transmission energy converter and a receiving energy converter, wherein the transmission energy converter and the receiving energy converter are arranged on the drill collar; the transmission energy converter comprises a first radiation metal block, a first mass metal block and a plurality of transmission type piezoelectric ceramic sheets; the receiving energy converter comprises a second radiation metal block, a second mass metal block and a plurality of receiving type piezoelectric ceramic sheets. According to the device, a multi-pole-source working mode combining a single pole, a dipole and quadrupole is utilized to directly measure stratum longitudinal wave, transverse wav, stoneley wave sound velocity, attenuation and other parameters which can provide reference and verification for each other or individually processed, so that the reliability and applicable scope of the device can be greatly improved and expanded.

Description

technical field [0001] The invention relates to the technical field of acoustic velocity measurement, in particular to an acoustic logging device while drilling. Background technique [0002] In recent years, with the increasing demand for oil in the global industry, the drilling of highly deviated wells and horizontal wells has become increasingly active in oil exploration, and logging-while-drilling technology has developed rapidly. Almost all open-hole wireline logging projects can use logging-while-drilling well way. The sonic logging while drilling technology is one of the important methods in the logging while drilling technology, which has the characteristics of measuring 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 R...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/14
CPCE21B49/00E21B47/14
Inventor 魏倩车承轩丛健生王秀明
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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