A flow base system for subsea wells

Inactive Publication Date: 2019-10-24
VETCO GRAY SCANDINAVIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a simple and low-cost flow base system for subsea wells that can be easily connected to existing wells or clusters of wells. The system is flexible and can fit in different subsea field layouts. Its technical effects include improved reliability, flexibility, and cost-effectiveness.

Problems solved by technology

In template structures there are also challenges related to tolerances when a large number of different structures or modules have to be fitted to each other and connected on the seabed.

Method used

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  • A flow base system for subsea wells
  • A flow base system for subsea wells
  • A flow base system for subsea wells

Examples

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Embodiment Construction

[0040]With reference made primarily to FIG. 1, a flow base system 1 comprises a set of flow base modules 2 arranged on opposite sides of a header pipe 3 for production fluid. The header pipe 3 extends through the flow base system from a first or upstream end 4 to a second or downstream end 5 as seen in the direction of flow F through the header pipe. The first end 4 is optionally connectable to external equipment for transport via the header pipe 3. The second end is the discharge end from which production fluid is discharged downstream.

[0041]A header isolation valve 6 is arranged in the first end of the header pipe, which also in the same end carries coupling means 7 for connecting to an external supplier of production fluid or to other subsea equipment. These external units can be another flow base system, a standalone satellite well or interconnected daisy-chain wells, or a pigging launcher / receiver e.g. In the discharge end 5, the header pipe carries coupling means 8, such as a ...

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Abstract

A flow base system (1) for subsea wells is disclosed, the flow base system comprising a header pipe (2) for production fluid extended through the flow base system, wherein from opposite sides of the header pipe (3) a set of flow base modules (2), respectively, is connected for supply of production fluid to the header pipe (3) via individual branch pipes (10) connecting the header pipe (3) with a Christmas tree (XT) interface (11) arranged for vertical connection to an XT respectively. The flow base system (1) is installed in a well template structure (18), wherein a flow base module (2) respectively is inserted into each well slot (S1-S4) formed in the well template structure (18).

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention relates to a flow base system for subsea wells.BACKGROUND AND PRIOR ART[0002]The infrastructure of subsea hydrocarbon production fields typically comprises rigid and flexible piping and manifolds to collect production fluid from subsea wells. Subsea wells can be grouped in template solution, or spread out as standalone satellite wells regularly / irregularly distributed over the field. If wells can be grouped closely together, templates can be used for controlling the spacing between the wells. For the purpose of this disclosure, subsea wells which are closely grouped and guided in a template will be named template wells.[0003]In general terms, a template is a structure which is placed on the seabed to provide guidance and support for other equipment such as drilling and completion equipment, wellheads, Christmas trees (XT), manifolds and pipeline connection equipment.[0004]A production well template is a welded structure tha...

Claims

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Application Information

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IPC IPC(8): E21B41/08E21B43/017E21B41/04
CPCE21B41/08E21B43/017E21B41/04
InventorHESTETUN, STEINAR LINDERMANNTOLO, KAREJOHNSTONE, CRAIG WILSONWHITE, PAUL WILLIAMALI, MOHAMMAD HASANFJELDLY, TOR ALEXANDER
OwnerVETCO GRAY SCANDINAVIA