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Centralizer suitable for various sleeves

A technology of centralizer and casing, applied in casing, drill pipe, drilling equipment and other directions, can solve the problem of lack of flexibility, and achieve the effect of wide application range, strong use flexibility and reasonable design

Inactive Publication Date: 2016-12-14
DRK OIL TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two types of centralizers commonly used, one is a rigid supporting centralizer, and the other is a flexible elastic centralizer. Most of the existing elastic centralizers are integrated and have no flexibility in use.

Method used

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  • Centralizer suitable for various sleeves
  • Centralizer suitable for various sleeves

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Embodiment Construction

[0017] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a centralizer suitable for various sleeves. The two ends of each elastic centralizing strip are connected with a first ring component and a second ring component through lock catches respectively, an adjusting buckle is arranged on each lock catch, multiple adjusting holes are formed in the elastic centralizing strip, the elastic centralizing strips are detachable, the adjusting buckles and the adjusting holes are quadrilateral or round, and the number of the elastic centralizing strips is four or more. The elastic centralizer is simple in structure and reasonable in design, the diameter of the centralizer can be adjusted according to the different sleeves, the number and the length of the elastic centralizing strips are adjustable, and the centralizer is high in use flexibility and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of centralizers, in particular to a centralizer suitable for various bushings. Background technique [0002] At present, in the cementing process of various drilling projects such as oil, natural gas, salt industry, geothermal and geological mines at home and abroad, it is usually required to keep the casing in the center, so that the cement slurry injected during cementing can improve the displacement efficiency and completely replace the drilling The liquid is evenly distributed in the annular space between the casing string and the well wall to ensure the cementing quality. The general method is to add a centralizer to the casing string. There are two types of centralizers commonly used at present, one is a rigid supporting centralizer, and the other is a flexible elastic centralizer. Most of the existing elastic centralizers are integrated and have no flexibility in use. Contents of the invention [0...

Claims

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Application Information

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IPC IPC(8): E21B17/10
CPCE21B17/105
Inventor 郭建龙武修明李学松李少卜
Owner DRK OIL TOOLS
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