Micro-resistivity scanning imaging logging tool electrode protective sleeve

A technology of scanning imaging and micro-resistivity, which is applied in packaging and other directions, can solve the problems of easy damage to electrodes of new electrical imaging instruments, increase the one-time success rate of logging operations, and affect logging quality, so as to improve convenience and ease of use. Operability, reduced maintenance rate, and extended service life

Inactive Publication Date: 2015-12-30
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem that the electrode of the new electric imaging instrument is easy to be damaged during transportation and loading and unloading due to the relatively long journey of well logging, thus affecting the quality of well logging, the invention independently researches and designs a new electric imaging electrode that can provide effective protection. The electrode protective cover is developed and designed according to the electrode shape of the Huiyan 2000 high-coverage micro-resistivity scanning imaging logging tool, which can be tightly fitted with the electrode plate, greatly prolonging the service life of the electrode, reducing the maintenance rate and saving costs. , increase the one-time success rate of logging operations

Method used

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  • Micro-resistivity scanning imaging logging tool electrode protective sleeve
  • Micro-resistivity scanning imaging logging tool electrode protective sleeve
  • Micro-resistivity scanning imaging logging tool electrode protective sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The retaining sleeve 3 is loosely sleeved on the stainless steel belt 2; the stainless steel belt 2 and the sheath fixing frame 4 are fixed firmly with rivets; the gland 1 and the sheath fixing frame 4 are connected with a cylindrical pin I5, and the gland 1 and the cylindrical pin Gap fit is used between I5 to ensure that gland 1 can move freely, and interference fit is used between sheath holder 4 and cylindrical pin I5 to ensure reliable fixation between cylindrical pin I5 and sheath holder 4; screw rod 8 and sheath holder The sleeve fixing frame 4 is connected by cylindrical pin II6, and the gap fit is adopted between the screw rod 8 and the cylindrical pin II6 to ensure that the screw rod moves freely. The interference fit connection is used between the sheath fixing frame 4 and the cylindrical pin II6 to ensure that the cylindrical pin II6 It is fixed reliably with the sheath fixing frame; the nut 7 is screwed on the screw rod 8 and can rotate freely up and down. ...

Embodiment 2

[0031] The retaining sleeve 3 is loosely fitted on the stainless steel belt 2; the stainless steel belt 2 and the sheath fixing frame 4 are fixed firmly with rivets; there are lugs on both sides of the upper end of the gland, and the gland passes between the lugs on both sides and the sheath fixing frame There is a movable connection between the gland 1 lug and the sheath fixing frame to ensure that the gland 1 can move freely; the screw rod 8 and the sheath fixing frame 4 are connected by a cylindrical pin II6, and the connection between the screw rod 8 and the cylindrical pin II6 Clearance fit is used between them to ensure that the screw rod can move freely. An interference fit connection is used between the sheath holder 4 and the cylindrical pin II6 to ensure reliable fixation between the cylindrical pin II6 and the sheath holder; the nut 7 is screwed on the screw 8, which can Rotate freely up and down.

[0032] During the logging process of the Huiyan 2000 high-coverage ...

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PUM

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Abstract

The invention relates to a micro resistivity scanning imaging logger electrode protection sleeve which comprises a fixing band, a retaining sleeve, a protection sleeve fixing frame, a press cover, a screw and a nut. The protection sleeve fixing frame is fixedly connected with the fixing band, one end of the protection sleeve fixing frame is movably connected with one end of the press cover, the screw penetrates a round slot in the press cover to enter a screw insertion hole in the other end of the protection sleeve fixing frame, then the nut is screwed on the screw and screwed into the fixed round slot of the press cover, and one side of the press cover facing the protection sleeve fixing frame protrudes to press the overlapped position of the fixing band to fix the electrode plate. The electrode protection sleeve can be matched with the electrode plate closely and exactly, the electrode service life is greatly prolonged, the maintenance rate is reduced, the cost is saved, and the one-time success ratio of the logging operation is improved.

Description

technical field [0001] The invention relates to an electrode protection sleeve of a micro-resistivity scanning imaging logging instrument, which belongs to the technical field of supporting devices for petroleum geological exploration instruments. Background technique [0002] The Huiyan 2000 high-coverage micro-resistivity scanning imaging logging tool meets the formation imaging requirements and at the same time realizes the eight-arm split pushing and 85% wellbore coverage. It belongs to the subject of frontier logging technology. The stratigraphic resolution of the tool reaches 5mm, and it can image the borehole wall intuitively, clearly and with high resolution. Among electrical logging instruments at home and abroad, this instrument is the instrument with the highest resolution. [0003] From the horizontal comparison of logging technology research in the same industry in China, the development of electrical imaging logging equipment is still a cutting-edge topic due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D85/86
Inventor 张美玲张小平袁晓燕刘云鑫曾科牟立伟
Owner NORTHEAST GASOLINEEUM UNIV
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