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Surface casing hanger

A surface casing and hanger technology, which is applied in wellbore/well components, earthwork drilling, sealing/isolation, etc. It can solve the problems of inconvenient installation and achieve convenient installation, good stability and firm casing suspension Effect

Inactive Publication Date: 2016-11-23
嵇霖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defect of inconvenient installation of the existing surface casing hanger, the invention provides a surface casing hanger, which makes the installation of the hanger convenient and quick, saves labor and time

Method used

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  • Surface casing hanger

Examples

Experimental program
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Embodiment Construction

[0008] as attached figure 1 As shown, the bottom end of the casing head body 3 is provided with an outwardly protruding flange, and the flange is provided with a plurality of through holes, and the bottom end of the hole matched with the surface casing 4 is provided with an inner cone surface; the slip holder body 1 is in the shape of an annular disc, on which there are a plurality of threaded holes at the same position as the plurality of through holes on the bottom flange of the casing head body 3, and in the inner hole of the slip holder body 1 There is also a conical surface opposite to the inner conical surface at the bottom of the casing head main part 3; Surface coupling, coupling of the outer conical surface at the lower end and the inner conical surface of the slip holder body 1, and the slip 2 is divided into four lobes through the whole.

[0009] In use, the four-petal slips 2 are put into the taper surface of the casing head body 3 and the slip holder body 1, and ...

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PUM

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Abstract

The invention relates to a surface casing hanger. The surface casing hanger comprises a casting head body, a slip supporting body, a slip and a fastening bolt and is characterized in that an externally protruding flange plate is arranged at the bottom end of the casting head body, multiple through holes are formed in the flange plate, and the slip supporting body is in a shape of an annular plate and is provided with multiple threaded holes identical the multiple through holes formed in the flange plate at the bottom end of the casting head body in position. The externally protruding flange plate is arranged at the bottom end of the casting head body, multiple fastening bolts penetrate through the through holes of the flange plate from the upper end of the flange plate to be directly screwed in the threaded holes of the slip supporting body, accordingly front screwing of the fastening bolts is achieved, and the purpose of casting holding of the slip is achieved. The surface casing hanger has the advantages of being convenient to install, firm in casting hanging and good in stability.

Description

technical field [0001] The invention relates to a surface casing hanger, which belongs to the technical field of petroleum machinery design and manufacture. Background technique [0002] The traditional surface casing hanger is composed of slips, slip holders, and fasteners. When the casing needs to be hung, the hanger is first connected to the casing head itself, but it cannot be completely tightened. After the casing is run , Tighten the bolts from the opposite side of the slip holder body, so that the slips in the hanger tighten and hold the casing tightly. This structure is obviously affected by external conditions and the environment during use. When the extension of the casing is lower than the ground, the space between the hanger and the ground is very small, and it is very inconvenient to tighten the bolts on the opposite side, which directly affects The tightness of the casing can even cause the casing to fall off; when the terrain outside the wellhead is complex, ...

Claims

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Application Information

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IPC IPC(8): E21B33/04
Inventor 不公告发明人
Owner 嵇霖