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Thermal recovery seal assembly

A technology of sealing components and sealing parts, which is applied in the directions of sealing/isolation, earth-moving drilling, wellbore/well components, etc. Effect

Active Publication Date: 2014-06-25
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a sealing assembly for thermal recovery, which can withstand a high temperature of 350°C and a high pressure of 20MPa, and can still withstand a high pressure of more than 15MPa after returning to a low temperature after passing through a high temperature of 350°C, which solves the problem of the seal of conventional thermal recovery packers It can only meet the problem of sealing at high temperature, and then returning to the low temperature state after high temperature and losing the sealing performance

Method used

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Embodiment Construction

[0019] In order to facilitate the elaboration of the present invention, the implementation of the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Combine figure 1 , figure 2 As shown, the present invention provides a thermal sealing assembly, including a wedge component, a multiple combination sealing component, a mandrel 11, and a base 14. The wedge component and the multiple combination sealing component are sequentially sleeved on the mandrel 11 and can be The mandrel 11 slides, and the base 14 is installed on the mandrel 11 adjacent to the multiple combined sealing component. The entire thermal recovery sealing assembly is placed in the casing 15.

[0021] The wedge component is mainly composed of the locking sleeve 1, the pressure ring 2, the inner sealing ring 3, and the expansion ring 4. The inner sealing ring 3 is installed in the annular groove formed by t...

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Abstract

The invention relates to a thermal recovery seal assembly which can bear the high pressure of 20 MPa or above at the high temperature of 350 DEG C and bear the high pressure of 15 MPa or above after the seal assembly bears the high temperature and then the high temperature is reduced to the low temperature. The thermal recovery seal assembly comprises a wedging component, a double-combined seal component, a mandrel and a base. The mandrel is sequentially sleeved with the wedging component and the double-combined seal component. The wedging component and the double-combined seal component can slide on the mandrel. The base is installed on the mandrel and is close to multiple-combined seal components. According to the thermal recovery seal assembly, the requirement for a thermal recovery packer in offshore thermal recovery well production is met and the thermal recovery seal assembly is suitable for the technical field of oil thermal recovery.

Description

Technical field [0001] The invention relates to a thermal recovery sealing component, which belongs to the technical field of petroleum thermal recovery. Background technique [0002] The seal is the core component of the packer in petroleum thermal recovery equipment, and the reliability of the seal performance of the packer mainly depends on the seal. Due to the requirements of different processes for field operations, the performance requirements for the seals of the packer are also different. For example, the packer for steam injection needs to withstand a high temperature of 350°C and a high pressure of 15MPa, and the corresponding seals only need to meet a high temperature of 350°C and a high pressure of 15MPa. However, the current offshore thermal recovery well requires the seals of the packer to withstand a high pressure of 20 MPa at a high temperature of 350 ℃, and the seals are required to withstand a high pressure of 15 MPa or more when the temperature returns to a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/122
Inventor 刘花军孙永涛马增华林涛顾启林刘海涛孙玉豹王通胡厚猛
Owner CHINA NAT OFFSHORE OIL CORP
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