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Self-guiding bushing vibration guide shoe

A self-steering, casing technology, applied in the direction of casing, drill pipe, drill pipe, etc., can solve the problems of ineffective cementing quality improvement, high risk of torque, insufficient chip carrying capacity, etc. Obviously, the effect of improving the bonding strength and improving the replacement efficiency

Active Publication Date: 2018-10-16
DEZHOU HANLONG PETROLEUM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The vibration cementing technology at the present stage can be divided into two categories, one is to add force at the wellhead to make the casing rotate or vibrate, but it faces the problems of complex process, high cost and high torque risk; the other is to use eccentric impeller Vibration cementing method, but insufficient axial vibration has no obvious effect on improving cementing quality
[0004] In the operation of horizontal wells and highly inclined wells, most of the rotary floating shoes adopted are eccentric head rotatable head plus single flow hole or multiple flow holes, but there are also problems in well sections facing collapse or shrinkage. Difficult to run in. Insufficient chip-carrying capacity

Method used

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  • Self-guiding bushing vibration guide shoe
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  • Self-guiding bushing vibration guide shoe

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Embodiment Construction

[0045] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The invention provides a self-steering casing vibration guiding shoe. The self-steering casing vibration guiding shoe comprises a short casing, a coupling, positioning plates, a first power turbine, an eccentric block assembly, a second power turbine, an eccentric head, a plurality of balls, a positioner and a drill bit. The self-steering casing vibration guiding shoe has the advantages that the structure is novel, simple and reasonable, the self-steering casing vibration guiding shoe is especially suitable for a well high in well cementation requirement, in the casing running process, steering of the eccentric head can be adjusted at any time, the casing is guided to run, and the self-steering casing vibration guiding shoe is particularly suitable for a highly-deviated well and a horizontal well; in the circulation process, the solids carrying capacity is greatly improved, the shear breaking effect on detritus at the bottom of the well is obvious, and the cleaning and purifying effects on a well bore are improved; in the circular well cementation process, the dynamic shear force of a drilling fluid or cement is improved, the displacement efficiency is improved, and the mixing and channeling conditions in the well cementation process are reduced; during well cementation, the cementing strength of oil well cement is improved through the shear, stirring and vibration effects, and the well cementation quality is improved.

Description

technical field [0001] The invention relates to a well cementing tool, in particular to a self-guiding casing vibration guiding shoe. Background technique [0002] In petroleum engineering cementing operations, in order to improve the cementing quality, vibration cementing technology is usually used to improve the cementing quality. In addition, when facing highly inclined wells or horizontal wells, rotary floating shoes or guiding shoes are used to solve the problem. The problem of downloading. [0003] The vibration cementing technology at the present stage can be divided into two categories, one is to add force at the wellhead to make the casing rotate or vibrate, but it faces the problems of complex process, high cost and high torque risk; the other is to use eccentric impeller Vibration cementing method, but the effect of insufficient axial vibration on the improvement of cementing quality is not obvious. [0004] In the operation of horizontal wells and highly inclin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/14
CPCE21B17/14
Inventor 刘明陈仲秋
Owner DEZHOU HANLONG PETROLEUM EQUIP CO LTD
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