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Resistivity Logging tooL

A technology of resistivity logging and drill collars, which is applied in the direction of measurement, circuits, electrical components, etc., can solve the problems of poor insulation and sealing performance and affect the measurement effect, and achieve the effect of improving insulation and sealing performance

Inactive Publication Date: 2018-11-23
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a resistivity logging tool, which solves the problem that the resistivity logging tool affects the measurement effect due to factors such as poor insulation and sealing performance and downhole vibration and impact during use.

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Embodiment Construction

[0031] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0032] The embodiment of the present invention provides a resistivity logging tool, comprising a drill collar 8 and a resistivity logging excitation device 1, the resistivity logging excitation device 1 is installed on the drill collar 8, and the resistivity logging excitation device 1 includes an excitation The coil 5 and the cover assembly 2, the cover assembly 2 is arranged on the outer cylindrical surface of the drill collar 8, the cover assembly 2 and the outer cylindrical surface of the drill collar 8 form a chamber 9, and the excitation coil 5 is arranged in the chamber...

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Abstract

The embodiment of the invention provides a resistivity Logging tooL. The resistivity Logging tooL comprises a driLL coLLar and a resistivity Logging exciting device which is instaLLed on the driLL coLLar; the resistivity Logging exciting device comprises an exciting coiL and a cover assembLy which is arranged on the outer cyLindricaL surface of the driLLer coLLar, the cover assembLy and the outercyLindricaL surface of the driLL coLLar form a chamber, the exciting coiL is arranged in the chamber, and an insuLating seaLant is arranged in the chamber. Thus, the probLem is soLved that in the useprocess of an existing resistivity Logging tooL, due to the factors of poor insuLating seaLing performance, downhoLe vibration impact and the Like, the measurement effect is affected.

Description

technical field [0001] The invention relates to the field of well drilling measurement, in particular to a resistivity logging instrument. Background technique [0002] When the resistivity logging tool works in working conditions, good insulation and sealing performance must be maintained between the electrodes and between the electrodes and the drill collar. It is necessary to install insulating materials between the electrodes and between the electrodes and the drill collar. However, under harsh working conditions, the reliability of this insulation and sealing method is poor, and the insulation and sealing performance of the resistivity logging tool cannot be guaranteed, and its measurement effect is greatly affected. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a resistivity logging tool, which solves the problem that the resistivity logging tool affects the measurement ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00H01F5/06H01F5/02
CPCH01F5/02H01F5/06E21B47/00
Inventor 于增辉侯洪为郭书生陆鹏王芝环王林根魏玺牛德成
Owner CHINA NAT OFFSHORE OIL CORP
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