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Outburst prevention device and outburst prevention method for packer sealing mechanism

A sealing mechanism and packer technology, which is applied in the directions of sealing/packing, earth-moving drilling, wellbore/well components, etc., can solve the outburst prevention method of the packer sealing mechanism and the specific information of the outburst prevention device. There are no problems such as meeting the sealing mechanism of the packer to achieve the effect of prolonging the effective working life, improving the effect and improving the sealing ability.

Inactive Publication Date: 2013-10-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] To sum up, there are currently many documents and patents that record the packer and the packer sealing mechanism, and also mention the "outburst prevention" and the outburst prevention mechanism of the packer sealing mechanism, but the packer sealing mechanism The specific information of the outburst prevention method and the outburst prevention device has not been made public, and so far there is no outburst prevention method and outburst prevention method for the packer sealing mechanism that can meet the current major oil and gas industry development and aim at high performance indicators in complex working environments. Anti-shock device

Method used

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  • Outburst prevention device and outburst prevention method for packer sealing mechanism
  • Outburst prevention device and outburst prevention method for packer sealing mechanism
  • Outburst prevention device and outburst prevention method for packer sealing mechanism

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0039]As shown in Figure 2, the taper range of the internal structure of the rubber cartridge seat 4 is 15°-75°, which can prevent the sealing mechanism 3 from protruding radially when it is compressed in the early stage; the internal structure of the integral protection bowl 5 The range of the taper is 15°-75° (under the condition of its own strength permitting, the larger the taper of the outer surface, the smaller the axial length will be), and the radial deformation will occur as the sealing mechanism 3 is compressed. The outer diameter is enlarged to prevent the outburst; the movable protective bowl 6 is composed of several protective blocks with the same structural size and more than 2 petals, and the taper in the internal structure ranges from 15° to 75°. When the packer sits When sealing, the axial load protection block produces radial displacement, and the ou...

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Abstract

The invention provides an outburst prevention device and an outburst method for a packer sealing mechanism, and belongs to the field of oil and gas field engineering. The outburst prevention device is sleeved on a central pipe of a packer and mounted at one end or two ends of the sealing mechanism. The outburst prevention device is of a sleeve structure, inner holes of the outburst prevention device include a taper hole sharing the same axis with the outburst prevention device. The conicity of the taper hole is 15-75 degrees. The outburst prevention device is a rubber sleeve base or integrated protection bowl or movable protection bowl. The outburst prevention method includes combining one or more same or different outburst prevention devices, and mounting the outburst prevention devices at the upper end or the lower end or the upper end and the lower end of the sealing mechanism 3. The outburst protection method and the outburst protection device which are practical and efficient are provided to protect the sealing mechanism, improve sealability of the sealing mechanism and prolong service life of the packer. By the device and the method, sealing effect of the packer can be increased by above 20%, and outburst protection effect is better for packers with high-performance indexes.

Description

technical field [0001] The invention belongs to the field of oil and gas field development engineering, in particular to an outburst prevention device and method for a packer sealing mechanism to improve the sealing performance of the packer. Background technique [0002] The packer is a downhole tool to achieve various measures and normal production of oil and gas wells, and the sealing mechanism is the core mechanism for the packer to seal off the annulus of the oil casing and isolate the production layer or well fluid. In order to improve the sealing ability of the packer sealing mechanism, in addition to optimizing the material and structural parameters of the sealing mechanism, the most effective means is to install retaining rings, supports or other anti-bursts with the function of "anti-burst" at both ends of the sealing mechanism. The device prevents the sealing mechanism from "protruding" to the oil casing annulus when the packer is set, forcing the sealing mechanis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127
Inventor 何祖清彭汉修岳慧段友智江山红郭朝辉崔晓杰吴晋霞
Owner CHINA PETROLEUM & CHEM CORP
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