A three-component induction coil system probe wire passing structure

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...

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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

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