mek4450 manifolds and templates - forsiden · the following standards are a selection normally used...

Anders E. HusbySeptember 2011

MEK4450 Templates and Manifolds

© Det Norske Veritas AS. All rights reserved.

September 2011

2

Templates & Manifolds

This module will cover:

� Applicable Codes and Standards

� Templates- Purpose of a template

� Manifolds- Purpose of a manifold

� Foundations


September 2011

3

Goal

� Differentiate different methods and understand reason for choosing different design


September 2011

4

Codes and standards

The following standards are a selection normally used for template/manifold design. The code requirements will vary with customer preference and local legislation

- ISO 13628-1- Steel structure: NS 3472 (Design methods and utilization of material, does not

cover loads)- NORSOK U-001 (Dropped object)- ASME B 31.3- ASME B 31.8- DNV-OS-F101- BS8010 Part 3- DNV Rules for planning and Execution of Marine Operation

- New Standard proposed: ISO 13628-15 “Structures and Manifolds”


September 2011

5

Purpose of template

� Being the guide, hang off and support to drilling and the wellhead conductor.

� Can be integrated with protection against fishing gear and dropped objects

� Based on seabed condition will the template be designed with- Mudmats as foundation and provide bearing capacity to avoid settlements- Skirt to penetrate seafloor for resist lateral forces- Skirt to provide friction against heave during installation- Washout sleeve to avoid shortfall and fracture in seabed during 36” drilling- Suction system to assist in penetrating the seafloor and leveling


September 2011

6

Templates and Manifolds

The function of the template will vary with

� Location- Local legislation

� Installation methods- Moonpool, drillpipe, cranevessel, modular, barge or wet tow

� Pipeline methods- Horizontal or vertical flowline connection, pipeline forces,

� Protection requirements- Fishing gear protection, dropped objects

� Drilling methods- Suction of drill cuttings, cement suction, drill cutting injection


September 2011

7

Foundations

� Installed before main manifold so reduced weight

� Allow drilling taking place (Normally one season prior to manifold installation)

� Each skirt (or mini pile) can be sucked down individually to adjust elevation

� Supports weight of manifold or template and anchors it in place on the seabed

Template Foundations with skirts or mini-suction piles :

Aker Kværner Subsea


September 2011

8

Fixed Template – Production Guidebase

Aker Kværner Subsea


September 2011

9

Modular Manifold / Template

TRIPLEPORCH

MUDMAT

CENTREPILE

EWA

HOGS

DRILL CUTINJECTION

PGBPGB

MANIFOLD PIG LOOPMODULE

PIG LOOPPORCH

CENTRESECTION

MANIFOLD ROOFPROTECTION


September 2011

10

Single Suction Piles

Key features :� Supports vertical and horizontal loads

on the manifold� Also used as anchor foundations for

FPSO or Semi-submersible moorings� Installed partially by self weight and then

by ROV deployed pump� Can be recovered by reverse pumping� May be designed so that orientation is not

critical during installation


September 2011

11

Protection Structures


September 2011

12

Hinged Manifold / Template


September 2011

13

Manifold functionsISO 13628-1:

“A manifold is a system of headers, branched piping and valves used to gather produced fluids or to distribute injected fluids. (ISO 13628-1). The manifold should provide sufficient piping, valves and flow controls to safely gather produced fluids or distribute injected fluids such as gas, water or chemicals”.

Purpose of Manifold

� The purpose of the manifold is to ”commingle” the fluid flow and to proved isolation where required.

� The Manifold Module provides the interface between the production pipeline, flowline and well.

� Pipelines or flexibles normally interconnect the manifold.

� Collecting produced fluids from individual subsea wells.

� Distributing production fluids, inject gas, inject chemicals and control fluids.

� Distribute the electrical and hydraulic system.

� Several XT can be connected to the manifold.

� Satellite modules (if required) will be connected to the manifold via a flow line.


September 2011

14

Templates and Manifolds

� In Norwegian terms the manifold is often referred to as the “Template/Manifold”, since the manifold is an integral part of the template.

Retrievable Manifold

Aker Kvaerner Subsea, Kristin project


September 2011

15

Manifold Piping

6” Branch Line To/From Well

Remote Actuated Valves

10 ” Main Header

5 1/8” Branch Valves

Pigging Loop Isolation Valve

2” CI Valves

ROV Panel


September 2011

16

Manifold


September 2011

17

Manifold


September 2011

18

Manifold Deployment


September 2011

19

Gemini


September 2011

20

Gemini System Integration Test (SIT)


September 2011

21

Manifold System Integration Testing (SIT)


September 2011

22

Manifold and distribution System

Manifold Centers w/o template function


September 2011

23

Safeguarding life, property and the environment

www.dnv.com

mek4450 manifolds and templates - forsiden · the following standards are a selection normally used...

Documents