An auxiliary stabilizing device for reaming for horizontal downhole coring

Abstract

The invention discloses a reaming auxiliary stabilizing device for horizontal downhole coring, which comprises a structural hole and a pipe body stabilizing component. Multiple sets of tube stabilizing components are arranged in a circular array in the inner wall of the wellhead of a horizontal well, and multiple sets of the tube body The stabilizing component can jointly support the structural hole; the structural hole is a prefabricated tubular structure, which is used to replace the wellhead of the horizontal well, so as to facilitate the installation and placement of the coring device; the tubular stabilizing component includes an installation bin, a lead screw, and a nut seat assembly, a follow-up support assembly, and a support slant plate, wherein the installation bin is arranged along the direction of the horizontal well and fixed on the inner wall of the horizontal well, and a lead screw is installed in the installation bin; the lead screw can pass through The screw nut seat assembly drives the support column to move axially; the installation bin also adopts a follow-up support assembly to connect with a support slant plate, and the support slant plate can lean against the outer wall of the construction hole and pass through the axis of the support column. Moving to can adjust the locking strength of the support slant plate to the construction hole.

Description

technical field [0001] The invention relates to the technical field of auxiliary coring, in particular to a reaming auxiliary stabilization device for horizontal downhole coring. Background technique [0002] In the process of deep mining of underground coal, water inrush disasters often occur, including roof water inrush and floor water inrush. Among them, the use of floor reinforcement technology can effectively deal with floor water inrush. Horizontal directional drilling, grouting reinforcement of the coal seam floor through horizontal directional drilling, so as to eliminate hidden dangers. [0003] In order to test the solidification effect of the slurry, it is necessary to coring in the horizontal well and send it to the research center for testing. During the coring process, the installation of the coring device is more critical, which needs to ensure the stability of the coring process and the core Specifically, when the coring device is installed in the horizontal...

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Problems solved by technology

[0003] In order to test the coagulation effect of the slurry, it is necessary to take coring in a horizontal well and send it to the research center for testing. During the coring process, the installation of the coring device is more critical, and it is necessary to ensure the stability of the coring process and the quality of the core. Specifically, when a coring device is installed at the horizontal wellhead, the direction of the horizontal wellhead will affect the direction of the coring device, which will easily make the shape of the obtained core column different from the shape of the standard column, while the horizontal wellhead The shape will affect the stability of the coring device

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