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Novel sealing device for medium-deep non-interference geothermal hole sleeve

A sealing device and non-interference technology, which is applied in the field of new sealing devices for non-interference geothermal hole casings in the middle and deep layers, can solve problems such as out of tolerance and achieve the effect of improving the sealing effect

Pending Publication Date: 2020-08-04
SHAANXI SIJICHUN CLEANING HEAT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 1. Control the occurrence (tolerance out of line) phenomenon;

Method used

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  • Novel sealing device for medium-deep non-interference geothermal hole sleeve
  • Novel sealing device for medium-deep non-interference geothermal hole sleeve
  • Novel sealing device for medium-deep non-interference geothermal hole sleeve

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Aiming at the problems existing in the prior art, the present invention provides a new sealing device for middle-deep non-interference geothermal hole casing to solve the poor sealing effect at the bottom of the casing in the prior art, which is easily blocked by landslides and difficult for downpipe construction. Problem, the present invention will be described in detail below in conjunction with accompanying drawing.

[0032] The outer wall of the outer pipe is provided with a threaded thread 1, and the geothermal hole is affected by underground geological factors and casing operation factors, and the solution to t...

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Abstract

The invention belongs to the technical field of geothermal hole sleeves, and discloses a novel sealing device for a medium-deep non-interference geothermal hole sleeve. The novel sealing device for the medium-deep non-interference geothermal hole sleeve is provided with an outer tube and an inner tube, which are sleeved, as well as a first sealing ball and a second sealing ball, wherein a heat collector is mounted on the middle position of a sealer on the bottom of the outer tube; the first sealing ball and the second sealing ball are separately arranged at upper and lower ends, inside the novel sealing device for the medium-deep non-interference geothermal hole sleeve, of the outer tube; a pressure divider is mounted on the position, on the bottom of the novel sealing device for the medium-deep non-interference geothermal hole sleeve, of the outer tube; and a spray hole is formed in the bottom of the pressure divider. The novel sealing device can improve the effect of preventing landslide hinder in sleeve dropping operation of the sleeve. After being heated, a screw thread tightening outer tube and a sealing screw thread are tightly fitted and tightened to achieve the optical sealing effect, so that the bottom sealing effect of the sleeve can be improved.

Description

technical field [0001] The invention belongs to the technical field of geothermal hole casings, and in particular relates to a new sealing device for middle-deep layer non-interference geothermal hole casings. Background technique [0002] At present, the middle and deep geothermal hole casings are high-pressure and corrosion-resistant oil casings, so that the hole walls are treated with anti-collapse treatment during the drilling process and when the hole is completed, so as to ensure the progress of the drilling process and the geothermal energy after the completion of the hole. The safety construction of the hole is carried out. [0003] Through the above analysis, the existing problems and defects of the existing technology are: the pipe thread plug device is directly used at the bottom of the existing casing, so the sealing effect is poor under the high pressure underground, the construction is difficult, and the geothermal hole is prone to collapse. [0004] The diffi...

Claims

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Application Information

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IPC IPC(8): E21B33/12F24T10/00
CPCE21B33/1212F24T10/00Y02E10/10
Inventor 李建峰王连庆蔡菁
Owner SHAANXI SIJICHUN CLEANING HEAT
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