Cutting auxiliary device for centralizer of measurement-while-drilling system

Abstract

The invention provides a cutting auxiliary device for a centralizer of a measurement-while-drilling system, which comprises a base, the base is provided with an arc-shaped lower surface and a horizontal upper surface, the arc-shaped lower surface is used for being attached to the surface of the centralizer, and a through first strip-shaped hole is formed in the center of the base and corresponds to a rubber wing of the centralizer; the pressing block is provided with a second strip-shaped hole which is the same as the first strip-shaped hole in the base, and a rubber wing of the centralizer can penetrate through the second strip-shaped hole; the gasket is arranged between the base and the pressing block and located on the side portions of the first strip-shaped hole and the second strip-shaped hole, and the gasket can be replaced; the adjusting nut is arranged on the pressing block and penetrates through the pressing block to be screwed into the base, the pressing block and the gasket are locked through screwing or releasing of the adjusting nut to achieve positioning of the centralizer rubber wing at the preset height, and when the adjusting nut is located at the releasing position, the gasket is unlocked.

Description

technical field [0001] The invention relates to the technical field of a centralizer of a measurement-while-drilling system, in particular to a cutting auxiliary device for a centralizer of a measurement-while-drilling system. Background technique [0002] Measurement While Drilling (MWD, Measurement While Drilling) centralizer is the connection and centralization tool of MWD. ​​Since the inner diameter standards of non-magnetic drill collars in each field are different, it is often necessary to cut the rubber wings of the centralizer during field construction. At present, most of them use on-site knife cutting to cut off the inappropriate parts. Since there is no scale mark, each rubber wing of the centralizer has a large deviation in corrugated shape, and even damage occurs due to improper cutting, resulting in the instrument not being centered in the non-magnetic space. In the field, the rubber wing will also be damaged under the erosion of the mud, which will not only af...

AI Technical Summary

Problems solved by technology

[0002] Measurement While Drilling (MWD, Measurement While Drilling) centralizer is the connection and centralization tool of MWD. ​​Since the inner diameter standards of non-magnetic drill collars in each field are different, it is often necessary to cut the rubber wings of the centralizer during field construction. At present, most of them use on-site knife cutting to cut off the inappropriate parts. Since there is no scale mark, each rubber wing of the centralizer has a large deviation in corrugated shape, and even damage occurs due to improper cutting, resulting in the instrument not being centered in the non-magnetic space. At the scene, the rubber wing will also be damaged under the erosion of the mud, which will not only affect the accuracy of the inclinometer, but also cause too much vibration due to the misalignment, resulting in loosening of the instrument parts, damage to the internal parts of the instrument, and failure to work normally

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