An expandable self-sealing packer
A sealing cover and sealing plug technology, applied in the directions of sealing/isolation, wellbore/well components, earth-moving drilling, etc., can solve the problems of difficulty in unsealing, difficult expansion and setting of self-sealing packers, etc., to reduce the use of Volume, easy to expand and set, the effect of saving resources
Active Publication Date: 2021-11-26
大庆市璞庆钻采设备制造有限公司
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Problems solved by technology
[0005] Aiming at the deficiencies of the prior art, the present invention provides an expansive self-sealing packer, which solves the technical problems of self-sealing packers that are difficult to expand and unsealing
Method used
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Embodiment Construction
[0036] The first implementation mode:
[0037] A swellable self-sealing packer, see figure 1 and figure 2 , including an annular pipe a2 arranged in the shape of a torus with a cavity inside and an opening at the top, and a central opening I is provided in the radial middle of the annular pipe a2; image 3 As shown, the concave side wall and the convex side wall of the axial top end in the cavity of the annular pipe a2 are respectively provided with concave threads and convex threads, as shown in Figure 4 As shown, the bottom end of the annular pipe a2 is evenly distributed with a liquid guide hole a201 arranged in a circular shape in the radial section and a rectangular shape in the axial section. The cavity of the liquid guide hole a201 and the cavity of the annular pipe a2 Connectivity settings;
[0038] The top opening of the annular pipe a2 is equipped with a sealing cover 6 composed of an integrally formed and interconnected cap and a sealing plug, such as Figure ...
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The invention relates to the technical field of downhole isolation tools, and discloses an inflatable self-sealing packer, which includes an annular tube, a sealing cover is installed on the top opening of the annular tube, and the side wall of the sealing plug of the sealing cover and the annular tube The side walls of the pipe are connected to each other by threads; there are guide holes evenly distributed under the axial middle of the annular tube, one port of the guide hole is set in the cavity of the ring tube, and the other end is set in the cavity of the elastic seal. The part is made of integrally formed elastic material; the cavity of the elastic seal, the cavity of the liquid guide hole, the cavity of the annular tube and the sealing plug of the sealing cover form a detachable airtight hydraulic cavity; the outer cavity of the annular tube A connecting piece is installed on the concave side wall of the connecting piece, the outer side wall of the connecting piece is fixedly connected with the concave side wall outside the annular tube cavity, and the connecting piece is sleeved on the central tube. The invention solves the technical problem that the self-sealing packer is difficult to expand and set and unsealing.
Description
technical field [0001] The invention relates to the technical field of packing tools, in particular to an expanding self-sealing packer. Background technique [0002] The current packer uses a packing rubber tube to absorb water and expand for setting. When setting, the packing rubber tube will swell. Therefore, there are technical problems that it is difficult to expand and set and unsealing. [0003] The invention provides an expandable self-sealing packer, aiming to solve the technical problems of the self-sealing packer that it is difficult to expand and set and unseal. Contents of the invention [0004] (1) Solved technical problems [0005] Aiming at the deficiencies of the prior art, the present invention provides an expandable self-sealing packer, which solves the technical problems of the self-sealing packer that are difficult to expand and set and unseal. [0006] (2) Technical solution [0007] To achieve the above object, the present invention provides the f...
Claims
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IPC IPC(8): E21B33/126
Inventor 王成军
Owner 大庆市璞庆钻采设备制造有限公司