Three-dimensional array induction calibration device for radial component calibration

A three-dimensional array, radial component technology, applied in surveying, wellbore/well components, earthwork drilling, etc., can solve the problems of affecting calibration accuracy and small response signal, and achieve the effect of improving calibration accuracy

Inactive Publication Date: 2013-09-11
CNPC GREATWALL DRILLING ENG
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  • Abstract
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  • Claims
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Problems solved by technology

However, the response signal of the single inclined ring scale device to the four radial components of xx, yy, xy, yx is small, which affects the scale accuracy of these four components

Method used

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  • Three-dimensional array induction calibration device for radial component calibration
  • Three-dimensional array induction calibration device for radial component calibration
  • Three-dimensional array induction calibration device for radial component calibration

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Embodiment Construction

[0013] For simplicity and illustrative purposes, the principles of the embodiments are described primarily with reference to examples of the embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In other instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments.

[0014] Fig. 1 shows a three-dimensional array induction scale device 100 for radial component scale according to an embodiment of the present invention. The scale device 100 comprises two scale rings 11, 13, a rotating device and a moving device. The two scale rings 11, 13 are coaxial and have a certain distance. The entire scale device moves axially along the three-dimensional array induction logging to...

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Abstract

The invention relates to a three-dimensional array induction calibration device for radial component calibration. The three-dimensional array induction calibration device for the radial component calibration is characterized by comprising two coaxial calibration loops with a certain distance therebetween, a rotating device and a moving device, wherein the whole three-dimensional array induction calibration device moves in the axial direction of a three-dimensional array induction logging instrument through the moving device; the rotating device is used for regulating the azimuth angle of the three-dimensional array induction calibration device; and the three-dimensional array induction calibration device further ensures that the azimuth angle of an axial calibration device is not changed in the calibrating process.

Description

technical field [0001] The invention relates to the field of petroleum well logging, in particular to a ring-aligning scale device used for the radial component scale of a three-dimensional array induction well logging tool. Background technique [0002] About 30% of the world's oil and gas resources are stored in thin sand-shale interbedded formations. The proportion of oil and gas resources in thin sand-mudstone interlayers in my country is greater than 30%. Sand-mudstone thin interactive reservoirs are characterized by low production, low permeability, and low resistance, with obvious anisotropy and complex geological structure. The coil system of the traditional array induction instrument is parallel to the well axis, and can only measure the one-dimensional resistivity in the horizontal direction. Therefore, the traditional array induction instrument cannot evaluate the electrical anisotropy characteristics of the sand-shale thin interactive layer group. [0003] Thre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00
Inventor 肖加奇俞燕明梁小兵赵彦伟徐晓伟
Owner CNPC GREATWALL DRILLING ENG
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