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A three-component induction coil system probe wire passing structure

An induction coil and three-component technology, which is applied in the directions of measurement, borehole/well components, earthwork drilling and production, etc., can solve the problems that affect the detection of weak signals, the signal passing through the line is prone to interference, and cannot meet the needs of large borehole logging, etc. Achieve the effects of good weak signal detection ability, reliable work, and enhanced awareness

Active Publication Date: 2015-09-09
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional array induction instruments cannot meet the logging needs of large boreholes and high-inclination wells because they only have one-way access. Moreover, with the development of oil and gas fields in anisotropic formations of thin sand and mudstone, some oil and gas reservoirs have been underestimated or ignored. Therefore, it is necessary to The three-component coil induction logging tool is used to measure the more complex formation environment and logging environment, and the probe of the three-component induction coil crosses the line because the signals passing the line in all directions are prone to interference, which affects the detection of weak signals

Method used

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  • A three-component induction coil system probe wire passing structure
  • A three-component induction coil system probe wire passing structure
  • A three-component induction coil system probe wire passing structure

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Embodiment Construction

[0025] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] The three-component induction coil system probe wire passing structure provided by the present invention is composed of a non-magnetic pressure-bearing shell 1, a metal mandrel 2, a composite copper tube 3, a Z coil skeleton 4, and an XY coil flexible plate 5.

[0027] Such as figure 1 and figure 2 As shown, the three-component coil system in the present invention selects the non-magnetic pressure-bearing shell 1, which has sufficient strength, reliable sealing and good insulation, and the metal mandrel 2 is designed as a slender shaft according to the installation requirements of the three-component coil system Structure, its cross-section is a cross-shaped structure, which is convenient for the independent wiring of the X, Y, and Z directions of the coil system and the outgoing coil of the transmitting coil.

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Abstract

The invention relates to a probe thread guide structure of a three-component induction coil array. The probe thread guide structure comprises a metal mandrel, a composite copper tube, a Z coil frame, and an X and Y coil flexible plate. The section of the metal mandrel is in a cross structure, the composite copper tube is sleeved outside the metal mandrel, and the Z coil frame is mounted on the composite copper tube. The X and Y coil flexible plate is fixed on the Z coil frame in a winding manner, three copper tube outlet holes with independent directions are arranged at a position of the composite copper tube corresponding to a cross recess of the metal mandrel, coil frame outlet holes arranged on the Z coil frame, flexible plate coil outlet holes arranged on the X and Y coil flexible plate correspond to the copper tube outlet holes on the composite copper tube and the cross recess on the metal mandrel. By the aid of the probe thread guide structure, thread guide signals on a coil frame winding and an upper branch region of the mandrel can be effectively prevented from disturbing mutually.

Description

technical field [0001] The invention relates to the field of petroleum well logging, in particular to a probe line-passing structure related to a three-component induction petroleum logging instrument. Background technique [0002] The three-component induction coil system is the main component of the three-component induction logging tool, and the coil system probe is the key point of the coil system. The problem of the coil system probe passing the line has always been the primary task of the coil system design. [0003] Traditional array induction instruments cannot meet the logging needs of large boreholes and highly deviated wells because they only have one-way access. Moreover, with the development of oil and gas fields in anisotropic formations of thin sand and mudstone, some oil and gas reservoirs have been underestimated or ignored. Therefore, it is necessary to The three-component coil induction logging tool is used to measure the more complex formation environment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B49/00
Inventor 王丽蓉陈涛王正宋青山党峰
Owner BC P INC CHINA NAT PETROLEUM CORP
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