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A tube bundle riser structure assembly

A structural assembly and tube bundle type technology, applied in drill pipes, casings, drill pipes, etc., can solve the problems of difficult coaxial adjustment of post-installation risers, large investment costs, and long installation time, so as to reduce the risk of failure and ensure safety. Good performance, improve installation efficiency

Active Publication Date: 2019-02-12
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty in coaxial adjustment of post-installation risers, low installation efficiency and poor accuracy, in the process of regional oilfield development, when multiple risers are installed offshore, if traditional risers are used and installed on the existing jacket platform, The investment cost is large and the installation period is long

Method used

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  • A tube bundle riser structure assembly
  • A tube bundle riser structure assembly
  • A tube bundle riser structure assembly

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Such as Figure 1~3 As shown, the tube bundle riser structure assembly proposed by the present invention includes a plurality of outer protective tubes 1 connected in sequence, and the axes of each outer protective tube 1 are located on the same straight line, thereby forming an elongated outer protective tube section. Inside each outer protective tube 1 are provided three casings 2 with a certain interval and arranged parallel to the protective tube 1 , the outer wall of each casing 2 is connected with the inner wall of the outer protective tube 1 . Corresponding every two bushings 2 in two adjacent outer protection pipes 1 are coaxially arranged to form a plurality of pipeline passages for placing conveying hoses and / or submarine cables, while also protecting the conveying hoses and / or submarine cable.

[0027] In the above-mentioned embodi...

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Abstract

The invention relates to a tube-bundle riser structure assembly which is characterized by comprising a plurality of outer protective tubes which are connected in sequence, wherein more than two casings are alternately arranged inside each outer protective tube, and are distributed parallel to the outer protective tubes; the outer wall of each casing is tightly connected with the inner wall of each outer protective tube through an anchor part; the corresponding casings in two adjacent outer protective tubes are coaxially arranged; the connecting end of each outer protective tube is tightly connected with a flange; the joints, connected with the respective outer protective tube, of each casing are arranged at two ends of the casing; a supporting annular plate is arranged at the connecting end, close to the top flange, of each outer protective tube; two lugs and a plurality of supporting brackets are alternately arranged between the supporting annular plate and the top flange; the two lugs are symmetrically distributed, and each lug and each supporting bracket are tightly connected with the top flange, the supporting annular plate and the outer protective tubes; and a plurality of supporting brackets are alternately tightly connected on bottom flange at the connecting end of each outer protective tube.

Description

technical field [0001] The invention relates to a tube bundle riser structure component, which belongs to the field of offshore oil engineering. Background technique [0002] For oil fields or gas field groups with a water depth of less than 100 meters, jacket platform development is still the main form. Although the development of offshore oil and gas fields gradually develops from shallow water to deep water, shallow water oil and gas fields and marginal oil and gas fields still have great potential for exploitation. At the same time, with mature technologies, these oil and gas fields still have obvious comprehensive economic advantages. In addition, with the exploration and research of offshore oil and gas fields in my country, the development of regional offshore oil and gas fields has spread all over the Bohai Sea, the South China Sea and the East China Sea. Regional offshore oil and gas field development models usually include multiple jacket platforms, multiple subma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/01
CPCE21B17/01
Inventor 贾旭景海泳刘晓霞朱海山黄俊侯静罗世勇邹星贾鲁生倪侃侃王德军刘毅
Owner CHINA NAT OFFSHORE OIL CORP
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