Center shaft for bridge plug, bridge plug and seat sealing method for bridge plug

A central shaft and bridge plug technology, applied in the field of construction machinery, can solve the problems of inability to make inner diameters and bridge plugs

Active Publication Date: 2017-06-30
陈爱民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the objects of the present invention is to propose a central shaft for a bridge plug, a bridge plug using the central shaft and a setting method for the bridge plug, which

Method used

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  • Center shaft for bridge plug, bridge plug and seat sealing method for bridge plug
  • Center shaft for bridge plug, bridge plug and seat sealing method for bridge plug
  • Center shaft for bridge plug, bridge plug and seat sealing method for bridge plug

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Embodiment Construction

[0082] Below you can refer to the accompanying drawings Figure 1 to Figure 21 And the content of the text to understand the content of the present invention and the differences between the present invention and the prior art.

[0083] The embodiment of the present invention provides a bridge plug with the advantages of large internal diameter, stable plugging effect, good anchoring reliability, no midway setting problem, good degradable performance, no need for drilling plugs, and convenient construction. The central axis of the bridge plug, the bridge plug using the central axis and the setting method of the bridge plug.

[0084] Such as Figure 2 to Figure 21 As shown, the central shaft for the bridge plug provided by the embodiment of the present invention includes a seating mandrel 1 and a seating tubular shaft 2, wherein:

[0085] There is a central hole in the sealing pipe shaft 2, and the sealing pipe shaft 2 includes an extrusion shoulder 21 and a bearing trunk 22, ...

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PUM

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Abstract

The invention discloses a center shaft for a bridge plug, a bridge plug and seat sealing for the bridge plug and relates to the technical field of engineering machinery. A technical problem that bridge plugs with large internal drift diameter cannot be made of degradable plastics and degradable metal material in the prior art can be solved. The center shaft for the bridge plug comprises a seat sealing dabber and a seat sealing pipe shaft, wherein the seat sealing pipe shaft is formed by an extrusion shoulder and a bearing trunk; the extrusion shoulder extrude a press ring of the bridge plug or a reducing supporting ring of the bridge plug; after a connection between the seat sealing dabber and a downstream end supporting body is removed, the seat sealing dabber can be extracted out of the center hole of the seat sealing dabber, so the center hole of the seat sealing dabber can form an internal fluid channel for the bridge plug; the strength of the material of the seat sealing dabber is greater than the strength of degradable material or corrosive material; and the material of the seat sealing dabber is degradable or corrosive material. The bridge plug comprises the center shaft for the bridge plug. Internal drift diameter of the bridge plug can be expanded; sealing effect of the bridge plug can be enhanced; and anchoring performance and construction convenience can be improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a central shaft for a bridge plug, a bridge plug using the central shaft and a setting method for the bridge plug. Background technique [0002] In the process of oilfield exploration and development, a temporary plugging process is needed to block the current production layer so as to implement technological measures for other production layers. After the process is completed, the temporary plugging is lifted to establish the flow between the production layer and the wellbore channel to realize the oil and gas production of oil and gas wells. Although the bridge plugging technology has been widely used in the reconstruction and development of fracturing measures. However, the applicant found that the prior art provides such figure 1 The bridge plug shown has at least the following technical problems: [0003] One is that the midway setting problem affects the no...

Claims

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Application Information

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IPC IPC(8): E21B33/134
CPCE21B33/134
Inventor 陈爱民
Owner 陈爱民
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