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Focus apparatus for casing bore

A seismic source and deep well technology, applied in the field of petroleum and geological exploration, can solve the problems of difficult maintenance, complex technology, and huge equipment, and achieve low cost, small size, and good consistency

Inactive Publication Date: 2004-12-08
XIAN HONGCHUAN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the defects of huge equipment, complex technology, difficult maintenance and high cost in the prior art

Method used

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  • Focus apparatus for casing bore
  • Focus apparatus for casing bore
  • Focus apparatus for casing bore

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Embodiment Construction

[0019] see figure 1 , the present invention includes the shell 2 and the source power motor and the shock exciter therein. Said motor is a cylindrical three-phase linear motor, the power and control signals of the cylindrical three-phase linear motor are supplied through the cable 1, and the primary winding 3 of the cylindrical three-phase linear motor is provided with a secondary hammer rod 4 , the bearing 8 in the cylindrical linear motor is a sliding bearing. Said shock exciter comprises a DC rotary motor 7, a hammer anvil 5 and a push block 6 that is slidably engaged with the side wall of the hammer anvil 5 and is used to be positioned on the well wall. Said hammer anvil 5 is coaxial with the secondary pole hammer rod 4 of the above-mentioned cylindrical three-phase linear motor. The structure of said exciter in this program is the same as the structure of a kind of pushing force transmission device that the patent No. is " 01247024.4 ", has been described in detail in t...

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Abstract

The equipment which consists of shell and focal shock motor in it is featured as that vibration exciter in the shell is also included and hammer anvil seat and sidewall contact block coordinated to the hammer anvil seat are comprised in vibration exciter as hammer anvil seat set in coaxial with secondary electrode hammer bar is linear motor.

Description

Technical field: [0001] The invention relates to the technical field of petroleum and geological exploration, in particular to a seismic source device for casing deep wells. Background technique: [0002] In petroleum and geological exploration, in order to make a fine description of the deep formation structure, it is one of the necessary key equipment as the seismic source used in the seismic exploration method in the well. At present, there are roughly five types of seismic source devices in wells that are widely used at home and abroad, and four of them use well fluid as a medium to transmit vibration. Weak energy; 2. The orbital vibrator of the US Geospace company has weak energy; 3. The airgun vibrator of the US Bolt company has strong harmful waves and cannot be used for deep well exploration; 4. The explosive cable vibrator of the French CGG company has continuous excitation capabilities Poor, inconvenient construction, long construction period. There is also a hyd...

Claims

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Application Information

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IPC IPC(8): G01V1/143
Inventor 万文曼阎治安肖竟平顾积栋刘四欣
Owner XIAN HONGCHUAN SCI & TECH DEV