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Riser installation vessel and method of using the same

A floating platform and riser technology, which is applied in the field of hydrocarbon storage or transportation equipment, and installs one or more steel risers, which can solve the problems of long time scheduling, infrastructure investment, fatigue and high maintenance costs, and installation of floating platforms. The problem of high platform cost achieves the effect of simple installation of equipment

Inactive Publication Date: 2008-07-16
SINGLE BUOY MOORINGS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Also, with such independent floating platforms for riser installation and for hydrocarbon production / processing, it takes a long time to schedule and mobilize the assembled floating platform for positioning, and after installation of said riser The floating platform needs to be rehabilitated
[0006] Furthermore, due to the high cost of installing the floating platform, as many risers as possible are installed when the installing floating platform is in situ, which means high capital investment, fatigue and maintenance costs for risers not yet in production

Method used

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  • Riser installation vessel and method of using the same
  • Riser installation vessel and method of using the same
  • Riser installation vessel and method of using the same

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Embodiment Construction

[0030] Fig. 1 is a floating platform 1 for hydrocarbon production and / or treatment according to the present invention. The floating platform 1 can be connected to the seabed 2 by a plurality of anchor cables 3 which can be connected to the chain platform 4 at the bottom of the floating platform 1. Alternatively, other structures are possible, such as turret moored mechanisms or scattered mooring structures.

[0031] The floating platform 1 includes a hydrocarbon processing equipment 5, such as an oil-water separation system, a gas liquefaction device, and a regasification device. The storage tank 6 in the floating platform 1 may contain natural and / or processed hydrocarbons.

[0032] The risers 9, 10 from the bottom of the wellheads 7, 8 of the seabed 2 extend to the buoys 11, 12 submerged in the water. The flexible risers 13, 14 from the buoys 11, 12 extend to the connectors 15, 16 on the floating platform 1. Each riser 13, 14 includes a connector 17, 18 connected to the connecto...

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Abstract

The invention relates to a vessel (1) for exploration of hydrocarbons. The vessel comprises one or more risers (13, 14) extending from the vessel to the seabed, a hydrocarbon processing unit (5) connected to the one or more risers and to a storage or transport structure (6) for storing the processed hydrocarbons. The vessel is anchored to the seabed, the vessel comprising a lifting means (22) for lowering risers vertically towards the sea bed and for connecting a riser with a first end to a subsea hydrocarbon structure (7), which riser comprises a connector (18) on a second end, the vessel comprising a connector (16) for attaching to the riser connector and for placing the riser in fluid connection with the processing unit.

Description

Technical field [0001] The present invention relates to a floating platform for producing hydrocarbons, comprising one or more risers extending from the floating platform to the seabed, a hydrocarbon processing equipment connected to the one or more risers, and A storage or transportation facility for processed hydrocarbons. The invention also relates to a method of installing one or more steel risers. Background technique [0002] At the Ocean Technology Conference (OTC) 11875 held in Houston, Texas, May 1-4, 2000 The des deserts-Doris project-published an article titled "Mixed risers for deep seas in Africa", disclosed a riser for deep water, including a steel shell with multiple production risers, gas and water The injection pipeline, and the insulator made of foam plastic that also transmits buoyancy to the riser. The riser pipe is installed on the shore and is towed to a position where the pipe is vertical and connected to a base on the sea floor. The upper part of the rise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B21/50E21B17/01E21B43/013
CPCE21B17/012E21B43/013
Inventor 杰克·波拉克伦德特·珀尔德瓦尔塔
Owner SINGLE BUOY MOORINGS INC