Connector for undersea Christmas tree

An underwater Christmas tree and connector technology, which is used in earth-moving drilling, wellbore/well components, sealing/packing, etc., to reduce hydraulic pressure, reduce operation difficulty, and save production costs

Inactive Publication Date: 2015-12-02
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and provide an improved subsea oil tree connector, which can not only replace the damaged parts on the platform or on land according to the damage of the hydraulic device, and solve the problem of The overall replacement of the connector due to the failure of the hydraulic system also improves the reliability of the seal, reduces the difficulty of operation, and greatly saves production costs

Method used

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  • Connector for undersea Christmas tree

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Embodiment Construction

[0020] Such as figure 1 As shown, the present invention includes: an upper main body 2, a lower main body 5 installed under the upper main body 2 by means of upper and lower connecting bolts 4, wherein an adaptive sealing gasket 3 is arranged between the upper main body 2 and the lower main body 5 , the middle part of the upper body 2 and the lower body 5 is provided with a through hole for accommodating the wellhead head 10; and the through hole of the lower body 5 is provided with a block 13 for matching with the locking groove of the wellhead head 10; the lower body The bottom of 5 is connected with several hydraulic devices 9 through hydraulic device connecting bolts 8; the hydraulic devices 9 are connected with the hydraulic push-pull rod 6 in another accommodation hole located at the bottom of the lower body 5 through the hydraulic control pipeline 7, and the hydraulic push-pull The pull rod 6 is pivotally connected to an eccentric wheel 11 through the eccentric wheel po...

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Abstract

A connector for an undersea Christmas tree comprises an upper body and a lower body mounted below the upper body, wherein an adaptive seal gasket is disposed between the upper body and the lower body, the middle of the upper body and the middle of the lower body are provided with through holes used for receiving a wellhead, a fastener block cooperating with a locking slot of the wellhead is arranged in the through hole of the lower body, a plurality of hydraulic devices are mounted at the bottom of the lower body and are connected with a hydraulic sliding rod disposed in a receiving hole arranged in the lower portion of the lower body, the hydraulic sliding rod is pivoted with an eccentric wheel through an eccentric wheel positioning shaft, and the eccentric wheel is abutted to the fastener block. Each damaged part can be replaced on a platform or land according to damage conditions of the hydraulic devices, thus the overall connector replacement problem caused by failure of a hydraulic system is solved; in addition, sealing reliability is improved, operational difficulty is decreased, and production cost is greatly reduced.

Description

technical field [0001] The invention relates to a connection structure of an underwater Christmas tree, in particular to an adaptively installed underwater Christmas tree connector. It belongs to the technical field of offshore oil engineering. Background technique [0002] In recent years, with the continuous development of the economy, the demand for oil and gas resources in countries around the world is increasing. Due to the depletion of onshore oil and gas resources, countries have turned their attention to the sea. The underwater production system has been widely concerned and applied by various countries for its remarkable technical advantages and considerable economic benefits. Using the underwater production system can not only avoid the construction of expensive offshore oil production platforms, thereby saving a lot of construction investment; moreover, the underwater production system is less affected by disaster weather and has strong reliability. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/038
Inventor 周延东赵欣欣姜瑛王道明徐渴望付剑波高永海钟朝廷陈野何鑫
Owner CHINA NAT OFFSHORE OIL CORP
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