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A fixing device for casing centralizer

A technology of fixing devices and centralizers, which is applied in the direction of casing, drill pipe, drill pipe, etc., can solve the problems of difficult inclination of the installation surface, adverse effects on the centralization effect of the inner casing, and high adjustment, so as to reduce limitations, Improve the effect of straightening and improve the stability

Active Publication Date: 2020-12-18
胜利油田固邦石油装备有限责任公司
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Problems solved by technology

[0003] However, when the existing casing centralizer is in use, because its inner diameter is mostly a fixed value, it can only perform the centralization operation on the casing of a specified size, and there are certain limitations in use, and when the casing centralizer is fixed, Its inclination relative to the mounting surface is not easy to adjust with high precision, and it is easy to adversely affect the straightening effect of its inner casing

Method used

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  • A fixing device for casing centralizer
  • A fixing device for casing centralizer
  • A fixing device for casing centralizer

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referre...

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Abstract

The invention discloses a fixing device for a casing centralizer, relating to the technical field of directional drilling. The fixing device comprises two arc-shaped plates II which are connected to two arc-shaped plates I through hinges, wherein connecting blocks are fixedly mounted on one of the arc-shaped plates I and the arc-shaped plates II, fastening bolts are in threaded connection betweenthe two connecting blocks and the corresponding arc-shaped plates II and between the two connecting blocks and the corresponding arc-shaped plates I, and two symmetrically-arranged connecting curved bars are fixedly mounted between the two arc-shaped plates I and between the two arc-shaped plates II. The fixing device has the advantages casings with different sizes in the casing centralizer can beeffectively clamped; the limitation of the casing centralizer in use can be reduced, the midpoint of the casing and the midpoint of the casing centralizer can be ensured to be positioned on the samestraight line, so that the centralizing effect on the casing is kept, the mounting angle of the casing centralizer can be finely adjusted as required, and the centralizing effect of the casing centralizer on the casing can be further improved.

Description

technical field [0001] The invention relates to the technical field of directional drilling, in particular to a fixing device for a casing centralizer. Background technique [0002] With the development of drilling technology, how to improve the cementing quality of highly deviated wells, directional wells and horizontal wells has become a key technical issue in the development of directional well technology. Currently, casing centralizers and casings are often used in cementing operations. With the cooperation of the pipe centralizer, the casing can be straightened to ensure the casing is run smoothly, and the displacement efficiency can be improved to ensure that a uniform cement sheath with good sealing effect is formed outside the pipe. [0003] However, when the existing casing centralizer is in use, because its inner diameter is mostly a fixed value, it can only perform the centralization operation on the casing of a specified size, and there are certain limitations in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/12E21B17/10
CPCE21B17/1057E21B17/12
Inventor 秦军彦周玉华董惠芹孙志鹏于洪锋杨守亮
Owner 胜利油田固邦石油装备有限责任公司
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