2628 05 Templates and Manifolds

12/08/2015
OIL & GAS
Introduction to Subsea Production

Systems
05 Templates and Manifolds
August 2015
1 DNV GL 2013 August 2015 SAFER, SMARTER, GREENER
Template and manifold
DNV GL 2013 August 2015

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Goal
Know the purpose and design requirements for templates

Know the purpose and basic functions of a manifold
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 13628-15 Subsea structures and manifolds (2011)

ISO 13628-1 General requirements and recommendations
Steel structure: Eurocode 3
NORSOK U-001 (Dropped objects)
ASME B 31.3 (Process piping)
ASME B 31.8 (Gas transmission piping)
DNV-OS-F101 (Submarine pipeline systems)
BS8010 Part 3
DNV standards for planning and Execution of Marine Operation
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Templates
Guide, hang off and

support to drilling
and to the wellhead
conductor
Base for the subsea
trees and the
manifold
Template Design
The design of the template will vary
with:
Location
Local legislation
Installation methods
Moonpool, drillpipe, crane vessel,
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
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Modular Manifold / Template
MANIFOLD PIG LOOP

MANIFOLD ROOF MODULE
PROTECTION
PIG LOOP
PORCH
CENTRE DRILL CUT

SECTION INJECTION
PGB PGB
TRIPLE
PORCH
HOGS
EWA
MUDMAT CENTRE
PILE

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Template Foundations
Based on seabed condition, the

template be designed with:
Mudmats as foundation and

provide bearing capacity to avoid
settlements
Washout sleeves to avoid shortfall

and fracture in seabed during 36
drilling
Skirts to penetrate seafloor for

resist lateral forces and to provide
friction against heave during
installation
Mini suction piles or a large single

suction pile to support vertical and
horizontal loads on the manifold
Aker Solutions
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12/08/2015
Mini Suction Piles
Template foundations with skirts

or mini-suction piles :
Installed before main manifold
so reduced weight
Allow drilling taking place
(normally one season prior to
manifold installation)
Each mini pile can be sucked
down individually to adjust
elevation
Supports weight of manifold or
template and anchors it in place
on the seabed
Aker Solutions

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Single Suction Piles
Key features :
Supports vertical and horizontal
loads on the template
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

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Fixed Template Production Guidebase
Aker Solutions

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Hinged Manifold / Template
12 DNV GL 2013 August 2015
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Manifolds
A manifold is a system of headers, branched piping and valves used to gather
produced fluids or to distribute injected fluids.
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. (ISO 13628-1)
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. Aker Solutions (Kristin)

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Manifold headers
Flowlines / piping are connected to one or two headers in the manifold.

Two production headers have the advantage of:
Increased flexibility in export options
Increased flexibility for future tie-ins
Increased production availability
Possibility for installing a pigging loop
Possibility for hydrate plug removal from two sides
at the cost of increased complexity and weight

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Manifold Piping
6 Branch Line To/From

Well
5 1/8 Branch
Valves
2 CI
Valves
Remote Actuated ROV
Valves Panel
10 Main Header
Pigging Loop Isolation Valve

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Manifold

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Manifold Piping
Manifold deployment

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Gemini

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Gemini System Integration Test (SIT)

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Manifold System Integration Testing (SIT)

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Manifold and distribution System
Manifold centers w/o template

function

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Foundations
From ISO 13628-1
1. Riser joint
2. Applied moments
3. Environmental (current, wave
action, snag loads, etc.)
4. Flowline connection
5. Soil reaction
6. Thermal

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Foundations
The two main methods used are:

1. The 30 suspension joint are suspended by drilling rig during cementing.
Common for satellites.
2. The 30 suspension joint is hung off in a drilling guide base or in a template
structure.
Soil condition, external loading capacity to wellhead and the installed
infrastructure are selection criteria for the method. The load can be illustrated
with trawl protection, riser loads and drilling loads.

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Foundations
Two main methods for foundation.
Example of method 1 Example of method 2

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Cluster Manifold
GE Oil & GAS: KIZOMBA manifold & foundation

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Template Manifold
GE Oil & GAS: SKARV manifold & foundation

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Template Manifold
GE Oil & GAS: Snhvit manifold & foundation

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Templates and Manifolds
Key takeaways:
The purpose of a template
Functions of a manifold
Seabed foundations
Videos
Installation of sub sea template Animation

Super Pipeline construction of Ormen Lange marine natural gas pipeline
Constructing Totals Dalia Field Part 9 - Installation of Manifold

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www.dnvgl.com
SAFER, SMARTER, GREENER
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12/08/2015

OIL & GAS

Introduction to Subsea Production

1 DNV GL 2013 August 2015 SAFER, SMARTER, GREENER

Template and manifold

DNV GL 2013 August 2015

Know the purpose and design requirements for templates

DNV GL 2013 August 2015

Codes and standards

The following standards are a selection normally used for template/manifold

ISO 13628-15 Subsea structures and manifolds (2011)

DNV GL 2013 August 2015

Guide, hang off and

DNV GL 2013 August 2015

DNV GL 2013 August 2015

Modular Manifold / Template

MANIFOLD PIG LOOP

CENTRE DRILL CUT

DNV GL 2013 August 2015

Based on seabed condition, the

Mudmats as foundation and

Washout sleeves to avoid shortfall

Skirts to penetrate seafloor for

Mini suction piles or a large single

DNV GL 2013 August 2015

Mini Suction Piles

Template foundations with skirts

DNV GL 2013 August 2015

Single Suction Piles

DNV GL 2013 August 2015

Fixed Template Production Guidebase

DNV GL 2013 August 2015

Hinged Manifold / Template

12 DNV GL 2013 August 2015

DNV GL 2013 August 2015

Flowlines / piping are connected to one or two headers in the manifold.

DNV GL 2013 August 2015

6 Branch Line To/From

Pigging Loop Isolation Valve

DNV GL 2013 August 2015

DNV GL 2013 August 2015

DNV GL 2013 August 2015

DNV GL 2013 August 2015

DNV GL 2013 August 2015

Gemini System Integration Test (SIT)

DNV GL 2013 August 2015

Manifold System Integration Testing (SIT)

DNV GL 2013 August 2015

Manifold and distribution System

Manifold centers w/o template

DNV GL 2013 August 2015

From ISO 13628-1

DNV GL 2013 August 2015

The two main methods used are:

DNV GL 2013 August 2015

Two main methods for foundation.

Example of method 1 Example of method 2

DNV GL 2013 August 2015

GE Oil & GAS: KIZOMBA manifold & foundation

DNV GL 2013 August 2015