CN103046906A

CN103046906A - Novel subsea manifold basic structure

Info

Publication number: CN103046906A
Application number: CN2011103062449A
Authority: CN
Inventors: 张荫纳
Original assignee: HAIWANGXING OCEAN ENGINEERING TECHNOLOGY Co LTD TIANJIN CITY
Current assignee: HAIWANGXING OCEAN ENGINEERING TECHNOLOGY Co LTD TIANJIN CITY
Priority date: 2011-10-11
Filing date: 2011-10-11
Publication date: 2013-04-17

Abstract

Disclosed is a novel subsea manifold basic structure. The novel subsea manifold basic structure comprises an upper manifold structure and a lower cylindrical base structure, a cylindrical base foundation is in a three-cylindrical base type, an upper portion and a lower portion of the cylindrical base foundation are connected so that the leveling is convenient, and middle portions of three suction piles are welded with horizontal supports and mutually connected through the horizontal supports. Three upright columns are arranged on the cylindrical bases, I-shaped steel is built on the upright columns to serve as a manifold structure framework, plates are laid on the manifold structure framework, and a manifold terminal structure is arranged on the cylindrical bases. A plurality of I-shaped steel racks are arranged on the framework to serve as the supports of a pipeline, pipeline supports are fixed in the middle of I-shaped steel of each section of the framework respectively through high strength bolts, and the pipeline is connected through a tee joint and placed in the pipeline supports. The manifold is combined with the cylindrical bases, underwater structural parts are embedded into mud through self weight of the cylindrical bases and injected into the mud through a suction force, the installation is simple and convenient, and simultaneously, the entire structure is good in stability, safe and reliable.

Description

A kind of underwater manifold foundation structure

Technical field

The invention belongs to the subsea manifold structure innovation of deep water hydrocarbon field exploitation subsea production system.

Background technology

Subsea production system is owing to having obvious mixed economy advantage in exploitation deep water hydrocarbon field, by in the world a lot of national a kind of important way broad research and application as oil field development.The installation of underwater structure is the important step that economy and safety need be considered in the whole Oil-Gas Field Development Engineering.Therefore, research is fit to different demands, especially adapts to deepwater environment, the large mounting method of works under water, and the definite and enforcement for the practical engineering project scheme has very important reference value.

Subsea manifold is as ingredient important in the subsea production system, its major function is to compile the oil gas of a plurality of production trees, and with its outer submerged pipeline of transporting to, in numerous underwater production facilities, volume and the quality of subsea manifold are larger, manifold weight does not wait from tens tons to the hundreds of ton, and subsea manifold foundation structure has determined the overall performance of manifold system.

Summary of the invention

In order to guarantee the overall performance of manifold system, promote safety, the reasonability of manifold structure, the invention provides a kind of underwater manifold foundation structure.

The technical solution adopted for the present invention to solve the technical problems is: subsea manifold foundation structure is comprised of top manifold structure and bottom cylinder based structures, and the cylinder basis is three basic forms, and the upper and lower links to each other, and is convenient to leveling.Interconnect by being welded with horizontal support in the middle of three suction piles.On the cylinder base 3 columns are arranged, built i iron on it as manifold structural framing and bed board, the manifold terminal structure is placed on the base.Several i-beam frames are arranged as the support of pipeline on the framework, line holder is individually fixed in every segment frames i iron middle part by high-strength bolt, and pipeline connects by threeway and is positioned in the line holder.

The invention has the beneficial effects as follows, adopt manifold to combine with the cylinder base, from reentrying mud, the suction injection makes easy-to-install while overall structure steadiness good, safe and reliable by the cylinder base in the underwater structure installation.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is structural representation of the present invention.

Wherein: the 1-suction pile; The 2-horizontal support; The 3-line holder; The 4-column; The 5-i iron; The 6-pipeline; The 7-threeway.

The specific embodiment

As shown in Figure 1, subsea manifold foundation structure is comprised of top manifold structure and bottom cylinder based structures, and the cylinder basis is three basic forms, and the upper and lower links to each other, and is convenient to leveling.Interconnect by being welded with horizontal support in the middle of three suction piles.On the cylinder base 3 columns are arranged, built i iron on it as manifold structural framing and bed board, the manifold terminal structure is placed on the base.Several i-beam frames are arranged as the support of pipeline on the framework, line holder is individually fixed in every segment frames i iron middle part by high-strength bolt, and pipeline connects by threeway and is positioned in the line holder.By loop wheel machine subsea manifold foundation structure is lifted lower water, to bottom cylinder based structures bottom contact mud face, continue to transfer by loop wheel machine, make the suction pile of substructure form air-proof condition by the deadweight initial penetration into mud, and in cylinder base penetration process, bottom cylinder base levelness is adjusted, when the basic top of cylinder is arrived in injection with a certain distance from the mud face, the diver need enter clear mud in the cylinder, after clear mud is finished, again starts injection, the structure injection to projected depth, is finished the manifold basis and installed.

Claims

1. underwater manifold foundation structure, formed by top manifold structure and bottom cylinder based structures, the cylinder basis is three basic forms, the upper and lower links to each other, be convenient to leveling, interconnect by being welded with horizontal support in the middle of three suction piles, on the cylinder base 3 columns are arranged, built i iron on it as manifold structural framing and bed board, the manifold terminal structure is placed on the base, several i-beam frames are arranged as the support of pipeline on the framework, line holder is individually fixed in every segment frames i iron middle part by high-strength bolt, and pipeline connects by threeway and is positioned in the line holder.