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Double-seal packer and hanger

A hanger and double-sealing technology, which is applied in the directions of sealing/isolation, wellbore/well components, earthwork drilling and production, etc., and can solve problems such as failure of geothermal well sealing devices

Pending Publication Date: 2020-06-16
中石化绿源地热能(陕西)开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a double-seal seat sealer and hanger to overcome the problem that the geothermal well sealing device fails when the geothermal well is in use

Method used

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of a double-seal seat sealer of the present invention; figure 2 It is a working schematic diagram of a double-seal seater and hanger of the present invention. refer to figure 1 , figure 2 As shown, the present embodiment is a kind of double-seal seater, compri...

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Abstract

The invention provides a double-seal packer and a hanger. The double-seal packer comprises an upper packer, a flexible sealing ring and a lower packer, wherein the upper packer, the flexible sealing ring and the lower packer are connected sequentially; and the flexible sealing ring can move vertically along with the lower packer. The problem that a sealing device of a geothermal well fails when the geothermal well is used is solved.

Description

technical field [0001] The invention relates to energy development technology, in particular to a double-seal seat sealer and hanger. Background technique [0002] The sealing of ordinary hangers in sandstone geothermal wells depends on the self-weight of the non-two-opening technical casing. The platform matches to realize the suspension of the two-open casing. At the same time, the plastic lead alloy pre-cast on the outer cone surface of the seat sealer is affected by the self-weight of the casing to achieve plastic deformation, and fill all the microscopic unevenness on both sides between the male and female cone surfaces to achieve sealing. [0003] However, with the sealing method in the prior art, the geothermal well sealing device may fail during use, causing surface water to rush into the pump pipe. Contents of the invention [0004] The invention provides a double-sealing seat sealer and a hanger to overcome the problem that the geothermal well sealing device fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/04
CPCE21B33/04
Inventor 刘斌王鹏涛张献喻任小庆赵宇璇
Owner 中石化绿源地热能(陕西)开发有限公司
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