Heavy shock absorber for drilling operation

A shock absorber and heavy-duty technology, applied to drilling equipment, drill pipes, drill pipes, etc., can solve the problems of weakening the service life of tools, damaging tools, etc., and achieve the effects of reducing friction, reducing drilling costs, and improving drilling stability

Inactive Publication Date: 2016-10-26
周育康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydraulic shock absorbers are used today. This type of shock absorber is buffered by liquid, and the part that transmits torque will generate greater friction during the drilling process, which will damage the tool itself and reduce the service life of the tool.

Method used

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  • Heavy shock absorber for drilling operation
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Embodiment Construction

[0016] 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 creative efforts fall within the protection scope of the present invention.

[0017] see figure 1 , figure 2 , a heavy-duty shock absorber for drilling operations, comprising a mandrel 1 coaxially arranged and sequentially connected by threads, a shock absorber 2, and an upper joint 3, the mandrel 1 is coaxially connected with a centralizing sleeve 11, the The mandrel 1 is a hollow cylindrical structure with different diameters, which includes a large diameter section connected to the drilling tool, a middle section with a centralizing sle...

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PUM

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Abstract

The invention provides a heavy shock absorber for drilling operation. The heavy shock absorber comprises a mandrel, a shock absorption shaft and an upper connector which are coaxially arranged and connected in a threaded mode in sequence, and a centering sleeve is coaxially connected with the outer side of the mandrel. The heavy shock absorber further comprises a shock absorption sleeve, one end of the shock absorption sleeve is connected with the centering sleeve, and the other end of the shock absorption sleeve is connected with the upper connector; the shock absorption sleeve and the mandrel are flexibly connected through pin rollers fixed to the shock absorption sleeve and keyways formed in the mandrel; a shock absorption element is arranged between the shock absorption sleeve and the shock absorption shaft, an interval exists between the shock absorption element and the shock absorption sleeve, the shock absorption element and the shock absorption shaft are sealed through a bush, and the two ends of the shock absorption element are each provided with a set of wear-resistant ring and guide ring in direct contact with the shock absorption sleeve and the shock absorption shaft. The shock absorption sleeve and the shock absorption shaft form flexible connection through the pin rollers, the keyways and the wear-resistant rings, point contact is adopted for torque transmission, friction is reduced, torque is transmitted reasonably and effectively, and the service life is prolonged; a rubber cylinder is adopted as the shock absorption element, and the shock absorption effect is better.

Description

technical field [0001] The invention relates to the technical field of oilfield drilling, in particular to a heavy-duty shock absorber for drilling operations. Background technique [0002] With the continuous development of oil and natural gas development. Drilling operations encounter increasingly complex formations. Therefore, the protection of drilling tools is very important. During the drilling process, there will be soft and hard formations, which will cause up and down bumps. The function of the shock absorber is to reduce the damage of the bumps to the drill bit and drilling tools. For drilling operations, the device can transmit the torque of the upper tool to the lower drilling tool through the internal structure to realize drilling operations. And it can reduce the damage to the drill bit and drill string caused by bumps. Nowadays, hydraulic shock absorbers are used. This type of shock absorber is buffered by liquid, and the part that transmits torque will ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/07
CPCE21B17/07
Inventor 周育康
Owner 周育康
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