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An integral wellhead device

A wellhead device and integrated technology, applied in the direction of wellbore/well components, sealing/package, earthwork drilling and production, etc., can solve problems such as increased installation and workover time, insufficient connection and sealing effect, long platform operation time, etc. , to save installation and workover time, reduce leakage risk, and achieve good sealing effect

Active Publication Date: 2021-02-09
DONGYING HUACHEN PETROLEUM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In particular, it is necessary to repeat the above operations several times from hanging a layer of casing to the final installation of the tubing head, which is cumbersome and takes a long time to work on the platform, that is, the installation of the tubing and the tubing hanger needs to be tightened and fixed by multiple jackscrews in multiple directions , the operation is very cumbersome, which greatly increases the installation and workover time, the efficiency is low, and the connection sealing effect between the wellhead body and the casing head is not good enough

Method used

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0024] refer to Figure 1-5 , a kind of integral wellhead device, a kind of integral wellhead device, comprises wellhead body 1, the top of wellhead body 1 is connected with blowout preventer 11, is provided with wax removal valve 12 on the blowout preventer 11, and the bottom of wellhead body 1 is connected There is a casing head 2, and the inner wall of the wellhead body 1 is provided with a sealing mechanism for sealing the casing head 2 and the wellhead body 1. The casing head 2 is provided with a first casing 3 extending into the wellhead body 1. The first set An oil pipe 5 is arranged inside the pipe 3, a casing hanger 4 matched with the first casing 3 is arran...

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Abstract

The invention relates to the technical field of petroleum exploitation, in particular to an integral wellhead device, comprising a wellhead body, a blowout preventer is connected to the top of the wellhead body, a wax removal valve is arranged on the blowout preventer, and a blowout preventer is connected to the bottom of the wellhead body. There is a casing head, the inner wall of the wellhead body is provided with a sealing mechanism for sealing the casing head and the wellhead body, the casing head is provided with a first casing extending into the wellhead body, and the first casing An oil pipe is arranged inside, and a casing hanger matched with the first casing is arranged inside the wellhead body, and a casing valve corresponding to the casing hanger is arranged on the outer wall of the wellhead body, and the casing valve A casing gauge is provided on the wellhead body, and a tubing hanger matched with the tubing is provided inside the wellhead body. The invention simplifies the installation procedure, is convenient to operate, saves time and labor, saves installation and workover time, greatly simplifies the later workover operation, has good sealing effect, and reduces the risk of leakage at the joint between the casing head and the wellhead body.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to an integral wellhead device. Background technique [0002] At present, the oil production wellhead devices used in offshore oil production platforms are mainly imported from abroad, which has the problems of cumbersome installation and high cost. Conventional production wellhead devices are connected and combined by casing head, casing spool, tubing head and Christmas tree. During the installation process, a series of procedures such as removing the wellhead blowout preventer, installing the cross, installing the blowout preventer, and pressure testing are required. In particular, it is necessary to repeat the above operations several times from hanging a layer of casing to the final installation of the tubing head, which is cumbersome and takes a long time to work on the platform, that is, the installation of the tubing and the tubing hanger needs to be tightened...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03E21B33/04E21B33/06
CPCE21B33/03E21B33/04E21B33/06
Inventor 刘志波
Owner DONGYING HUACHEN PETROLEUM EQUIP CO LTD
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