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An expandable packer and method of using the same

A packer and expansion technology, applied in sealing/isolation, earthwork drilling, wellbore/well components, etc., can solve the problem of limited ability of packer to withstand pressure difference, seal failure, and packer loss of seal and other problems, to achieve the effect of improving sealing and stability, improving the ability to withstand pressure difference, and strong ability to withstand pressure difference

Active Publication Date: 2022-08-05
陕西时玖昌环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The common expandable packer rubber sleeve and the central tube are vulcanized as one, and the liquid enters the gap between the central tube and the rubber sleeve through the liquid passage hole on the side wall of the central tube to expand the elastic rubber sleeve, which is often used in actual use. The rubber tube is torn and cracked, the vulcanized part is detached, etc., resulting in the failure of the seal;
[0005] 2. As the depth of oil and gas reservoirs is getting deeper and deeper, the pressure difference formed between the upper and lower sides of the expansion packer is also increasing. The ability of the existing packer to withstand the pressure difference is limited, and the expansion rubber tube may be excessively deformed. Or produce peristalsis, prone to packer failure, resulting in economic losses

Method used

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  • An expandable packer and method of using the same
  • An expandable packer and method of using the same
  • An expandable packer and method of using the same

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specific Embodiment approach

[0040]It should be explained that the structure, proportion, and sizes attached to the figures attached to this manual are only used to cooperate with the content revealed in the instructions to understand and read from those who are familiar with this technology. The limited conditions, the modification of any structure, the change of the proportion relationship, or the adjustment of the size, without affecting the effects of the present invention and the purpose that can be achieved, should Within range.

[0041] At the same time, the terms cited in this description such as "up", "down", "left", "right", "middle" and "one" are only for easy narratives, not used to limit this. The scope of the invention can be implemented, and the change or adjustment of its relative relationships. Under the content of no substantial changes, it is also regarded as the category of the present invention.

Embodiment 1

[0043] Bind figure 1 To attach image 3 , This embodiment provides an expansion septor, including Central Pipe 1, which is connected to connecting connectors 2 at both ends of the central pipe 1. Inside the ring -shaped space 25 is fixed with a sealing ring 3 that is fitted with the outer wall of the center pipe 1. The ring of the ring, and the sealing liquid storage cavity 43 is together with the sealing ring 3. The center pipe 1 has the first hole 11 on the center pipe 1. The sealing ring 3 is provided with the first -pass hole 11 and the second pass hole 31 of the storage liquid cavity 43.

[0044] In the above -mentioned technical scheme, the inner ring wall of the sealing ring 3 is preferably set up two sealing ring slots 312, and the two sealing ring slots 312 are located on the upper and lower sides of the second and second pores 31, respectively. In the circle, the O -type sealing ring is closely replaced by the central pipe 1, thereby further improving the seal between the...

Embodiment 2

[0054] Bind figure 1 To attach Figure 10 , This embodiment provides an expansion septor. On the basis of embodiment 1, a support structure of rubber tube 4 is added. This supporting structure can not only limit the axial expansion level of the rubber cylinder 4, increase the sedentary septum The sealing stability of the device in the high -voltage difference can also promote the rowing efficiency of the rubber cylinder 4 during unblocking and achieve rapid unblocking. The specific technical solution is as follows,

[0055] like Figure 4 As well as Figure 5 and Image 6 Show, the connection head 2 round hinge multiple of multiple support rods 5, the hinge is equipped with twist spring 24, the twist spring 24 connects the connection head 2 at the other end, and the other end is connected to the support rod 5. The supporting rod 5 is close to the part of the ring -shaped space 25 in the tapem 4, and the expansion of the rubber cylinder 4 can be rotated from the vertical state to the h...

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Abstract

The invention relates to the technical field of petroleum equipment, in particular to an expanding packer and a method for using the same. The central tube forms an annular space, and a sealing ring that closely fits with the outer side wall of the central tube is fixed in the annular space. The outer side wall of the sealing ring is connected to the two free ends of the rubber cylinder, and the rubber cylinder is folded and form a sealed liquid storage chamber together with the sealing ring. The rubber cylinder extends axially out of the annular space, and the end away from the connecting head forms a bent portion. There is a first through hole, and the sealing ring is provided with a second through hole that communicates with the first through hole and the liquid storage chamber. The expansion packer provided by the invention has good sealing stability, convenient disassembly and assembly of the rubber cylinder, and strong ability to withstand pressure difference during sealing.

Description

Technical field [0001] The present invention involves the field of oil equipment technology, especially an expansion sediment and its usage. Background technique [0002] The sealing device is an elastic sealing tool that is used to seal the circular space between the various sizes and the shaft eyes and the tube column. Depending on the expansion method of the rubber tube, the septifier can be divided into compressed sedents and expansion septors. Among them, the expansion septor mainly includes: puts in the upper connector, expanded rubber tube and lower joints outside the central tube, and set liquid holes and liquids on the plane of the center tube and expansion rubber tube. The sealing channel on the central tube of the expansion seals enters the gap between the central tube and the rubber cylinder, so that the elastic rubber tube is expanded and the diameter is increased until the outer diameter of the rubber tube is closely fitted on the inner wall of the tube. The ring -s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/127
CPCE21B33/127E21B33/1277
Inventor 孙浩峰
Owner 陕西时玖昌环保工程有限公司
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