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Ultradeep sea oil-gas field engineering development system

A technology for engineering development and oil and gas fields, which is applied in drilling equipment, floating structures, earthwork drilling and production, etc. It can solve the problems of feasibility, safety and economic applicability that cannot meet the requirements, sharply increased risks of oil and gas mining operations, and harsh sea conditions, etc. problems, to achieve the effect of reducing design requirements and technical difficulty, good stability and high cost

Active Publication Date: 2012-06-27
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, relying on traditional ocean engineering equipment and ocean engineering technology, the limit water depth for the development of human ocean oil and gas resources is between 3000 and 3500m, and the investment in development costs is huge
In addition, due to the harsh sea conditions (such as heavy rains and hurricanes) in extremely deep waters, the risk of normal oil and gas extraction operations has increased dramatically
[0004] Based on the above problems, the feasibility, safety and economic applicability of traditional offshore oil and gas engineering equipment and offshore oil and gas engineering technology in extremely deep water environment (3000-6000m) can no longer meet the requirements

Method used

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  • Ultradeep sea oil-gas field engineering development system
  • Ultradeep sea oil-gas field engineering development system
  • Ultradeep sea oil-gas field engineering development system

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, an ultra-deep offshore oil and gas engineering development system mainly includes a sea surface floating production device 30, a primary riser support buoy 10, a primary rigid riser 15, a secondary riser support buoy 20, and a secondary rigid riser 25. Oil production equipment in water 19, upper flexible jumper pipe 27, tension mooring device and subsea wellhead device 28.

[0031] For the convenience of describing the specific embodiment of the present invention, it is assumed that the sea area depth of the operation is H (H is greater than 3000m).

[0032] The first-level riser support buoy 10 is located at H / 2 below the sea surface, and is fixed on the pile foundation 8 on the seabed 17 through the tension cable 7, so that the first-level riser support buoy 10 is stably positioned in the underwater designated Location H / 2.

[00...

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Abstract

The invention discloses an ultradeep sea oil-gas field engineering development system, which comprises a sea floating production device, a first-stage riser supporting photon, first-stage rigid risers, a second-stage riser supporting photon, second-stage rigid risers, underwater oil extraction equipment, an upper flexible jumper tube, a tension mooring device and a seabed wellhead device, wherein the tension mooring device comprises a tension cable and a pile foundation. Submarine oil extraction equipment is arranged on the second-stage riser supporting photon positioned 200-350 meters below the sea surface, and because of pressure reduction and temperature rise, design requirements and technical difficulty for the oil extraction equipment are reduced, and construction, installation and maintenance cost is greatly reduced. The two stages of riser supporting photons are adopted to bear the loads of the rigid risers in water stage by stage, the oversize of a single riser supporting photon is avoided, the total weight supported by the sea floating production device is effectively reduced, and design requirements on the sea floating production device are reduced.

Description

technical field [0001] The invention relates to an offshore oil and gas field development technology, in particular to an extremely deep water offshore oil and gas field engineering development system. Background technique [0002] The world's ocean depths of 3000-6000m occupy the vast majority of the ocean area, reaching 73.83%. Therefore, the development of seabed resources in extremely deep waters is an important goal pursued by contemporary high-tech. [0003] At present, relying on traditional ocean engineering equipment and ocean engineering technology, the limit water depth for the development of human ocean oil and gas resources is between 3000 and 3500m, and the development cost is huge. In addition, due to the harsh sea conditions (such as heavy rains and hurricanes) in extremely deep waters, the risk of normal oil and gas extraction operations has increased dramatically. [0004] Based on the above problems, the feasibility, safety and economic applicability of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B35/44
CPCE21B17/015
Inventor 黄一甄兴伟张崎刘刚李红霞
Owner DALIAN UNIV OF TECH
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