aquaterra riser system

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Riser Systems

www.aquaterraenergy.com


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Aquaterra Energy is renowned for innovation in its analysis

and development of riser systems, pushing the boundaries of

shallow and deepwater technology and enabling international

customers to efficiently, safely and cost effectively tap into

offshore reservoirs.

Our dedicated in-house team of riser engineers is experienced

in delivering high pressure riser systems, surface riser systems,

pipeline risers, VIV suppression systems, tieback engineering

and centralisers. The team handles the complete scope of

riser system supply, including analysis, structural design, FEA,

project management, QHSE, inspection, testing, offshore

procedure optimisation and offshore installation.

INTRODUCTION

3 Riser Analysis

4 Subsea Riser Systems

5 Connectors (Subsea and Surface)

Surface Riser Systems

6 Pipeline Risers

VIV Suppression Systems

7 Tieback EngineeringCentralisers

8 Contact Us

CONTENTS


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Aquaterra EnergyRiser Systems

Riser Analysis

Riser Analysis Services

Strength and stability analysis.

Vortex induced vibration (VIV).

Wave and VIV induced fatigue life.

Thermal expansion analysis.

Snag loading / trawl board impact.

LRFD and WSD methodology.

Pipe in pipe capability.

Pile / soil modelling.

Operations

Exploration wells jack-up drilled.

Appraisal wells jack-up drilled.

Platform drilled wells jack-up

drilled, platform based drillingpackage and tender assist rigs.

Pre-drilled and tieback wells jack-

up drilled, platform based drilling

package and tender assist rigs.

High pressure drilling and workover

rigs jack-up drilled.

Subsea wells jack-up drilled.

Combined drilling riser and conductor

floating drilling rigs (semi-

submersible and drill ships).

Features and Benefits

Best industry practice.

Detailed report complete

with results, conclusions and

recommendations.

Operational review.

Full product and service range

available to provide a solution for

any result outcome.

Aquaterra Energy offers a

comprehensive riser analysis

service, designed to meet

the highest regulations and

requirements, delivered

across a variety of offshore

environments.

Our highly qualified and experienced

engineering team provides in depth

analysis, highlighting specific project

needs and building bespoke models

to replicate situations in offshore

environments, meeting the individual

operational requirements of our

customers. Using multiple recognised

programs to ensure accurate results

for both deep and shallow water

studies.

The analysis department also has

Aquaterra Energys operational

expertise and product ranges to

assist clients with practical solutions,

when analysis conclusions require.

This operational expertise is utilised

on every analysis, with the input

data being reviewed to ensure the

modelling approach is consistent with

the actual design and a detailed review

of the analysis report to ensure the

practicality of any recommendations

made. It is our aim to develop practicalsolutions for our clients.


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The highly skilled engineering team

at Aquaterra Energy has a proven

track record in specialist design,

fabrication and installation of high

pressure, full bore drilling risers,

around the world. Acknowledged

pioneers of riser system technology,

we are considered market leaders in

the field and supply riser services for

international customers, including

Apache and Petrofac.

Our dedicated in-house team ofriser engineers can provide on the

ground services at a moments

notice. The teams understanding of

high pressure risers, from analysis to

installation, equips them to oversee

and implement the complete scope

of supply, including riser analysis,

structural design, FEA, project

management, QHSE, inspection,

testing, offshore procedure

optimisation and offshore installation.

Our fatigue management is unique

and essential in ensuring systemintegrity and reliability. The team

knows the running history, location

Subsea Riser Systemsand fatigue life of every system

component and guarantees that

extensive fatigue testing has been

performed on all critical areas.

Our technical team has a reputation

for innovation with successful projects,

such as the worlds first 10,000 psi

system developed in conjunction with

Oil States. The design enables us to

provide all high pressure riser systems

with Merlin connectors, instead of

flanged connectors, for easier offshorehandling. In addition, the speed

at which the Merlin connector can

be assembled means that run and

retrieval times can be greatly reduced,

saving in excess of two to three rig

days.

The Merlin is a tried and tested, field

proven design, used thousands of

times on rigs around the world. Its

high bending and tensile capacities,

repeatable make up and break out

capability and extremely high fatigue

performance are essential to ensureintegrity and longevity in the harsh

environments in which it is used.

5k System 10k System

Connector Type Oil States Merlin Oil States Merlin

Outer Diameter

Pipe 24" (nom) 25" (nom)

Connector 26" (nom) 28.7" (nom)

Inner Diameter 21" (nom) 20" (nom)

Wall Thickness 1.5" (nom) 2.5" (nom)

Operating Pressure 5,000 psi 10,000 psi

Test Pressure 7,500 psi 15,000 psi

Coating Thermally Sprayed Thermally SprayedAluminium Aluminium

Yield Bending Capacity

Pipe 3,700 kips ft 6,000 kips ftConnector 3,700 kips ft 6,000 kips ft

Yield Tension CapacityPipe 8,480 kips 14,130 kipsConnector 8.480 kips 14,130 kips

Subsea H4 Connector Vetco ExF Vetco DWHD

FMC Torus IVVetco DWHD

Quick Connects FMC Speedloc Vetco NT2

Vetco NT2


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Aquaterra Energy offers a choice

of connector variants which can

maximise operations across a variety

of applications and environments.

These include the market leading,

field proven, deep water, heavy duty

H4 subsea connector, for use on its

own or as part of Aquaterra Energys

high pressure riser system, providing

the connection between the risers

stress joint and the subsea wellhead.

The models exceptionally high

bending capacity means it is suited

to most offshore operations. All our

subsea connectors can be fitted with

a standard ROV hot stab panel for

secondary control in the failure of the

surface control unit.

Aquaterra Energys hydraulic power

units (HPUs) allow the control

and functioning of all our subsea

connectors.

From detailed operational review and

riser analysis, through to procurement

and delivery of complete surface riser

systems, Aquaterra Energy has the

expertise, personnel and equipment

to provide a highly responsive, time

saving, tailored solution, across a

variety of projects.

Connectors(Subsea and Surface)

Surface Riser Systems

Aquaterra Energy also offers a

range of surface connectors, such

as the NT2, Speedloc and Fastlock

connections. These are used to

minimise rig time for riser applications,

providing the connection between the

rig BOP and the surface riser tension

joint.

Analytical ability, combined with a

detailed operational understanding

of standard and non-standard riser

operations, enables us to provide a

fully optimised equipment selection

service, and through the use ofdedicated BOP and wellhead quick

connectors, the team can reduce

running times saving valuable rig time

per deployment.

Using Aquaterra Energys dedicated

handling and running tools, all riser

systems can be constructed and

pressure tested offline. All surface

systems are also fully NACE compliant

and come in a variety of sizes andpressure ratings.

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Aquaterra Energys in-house riser

engineers have the knowledge and

experience to design, manufacture and

install offshore pipeline riser systems.

Our team of riser engineers has been

involved in the design and installation

of numerous riser systems on a

worldwide scale.

Throughout the pipeline riser design

process, we use both our operational

and design experience to accurately

define and model specific

situations during the risers

operational lifespan. Particular

attention is given to both

the installation and in-place

Aquaterra Energy recommends the

implementation of vortex induced

vibration (VIV) suppression systems

across all its operations, to minimise

structural damage, increase structure

lifetime and reduce system costs.

Our suppression systems are an

affordable solution to preventing ordelaying separation and reducing

the number of vortices produced,

minimising the possibility of

Pipeline Risers

VIV Suppression Systems

analyses to ensure the stresses in the

riser caused by installation methods

or environmental loading during

operation are considered.

Giving careful consideration to the

installation methodology allows us

to be flexible in our design approachand adjust either the operation or the

risers design to achieve the optimal

solution to a specific challenge.

In addition to the design of the

pipeline riser, our in-house engineers

can look at the design and interface

concerns between the pipeline

support clamps and the platform

jacket, and are also experienced in

the design and specification of pig

launchers and receivers.

Our experienced in-house project

team will liaise with the client to

develop the most efficient means of

installing the riser, and has experience

managing the installation of projects

where the riser has been deployed

from both heavy lift barges and jack-

up drilling rigs.

The project teams aim is to ensure

that the riser is installed as safely

and efficiently as possible, and is

commissioned on time and within

budget.

resonance, helping to reduce riser

fatigue damage, eliminating adverse

pressure gradients and preventing

alternate vortex shredding motion.

Systems can be produced quickly, are

simple to construct and install, and

come in a variety of sizes and coatings

to suit different marine conditions.Pre-existing data for performance

verification is available.


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At Aquaterra Energy, our primary

focus when assisting in the pre-

planning of well tieback operations

is to maximise efficiency and cost

effectiveness, without compromising

attention to detail, while minimising

rig time and reducing risk.

With over 40 years of in-house

experience, we understand the

variety of issues surrounding these

delicate operations. We appreciate

that managing operations and

communicating with all parties

involved can prove challenging

and our experience has shown that

being involved from the outset can

add significant value to the entire

programme. So, we work closely

with clients throughout programme

development to identify equipment

Aquaterra Energy is experienced

in providing complete centraliser

packages, from design through to

project management and installation,

including bespoke centraliser designs

across a variety of operations.

Our team of experienced engineers

provide stringent finite element

modelling to present an optimum

design which meets industry

codes and standards, requires no

Tieback Engineering

Centralisers

requirements, address eventualities

and contingency plans to ensure that

an effective programme is provided.

Our team of experienced specialist

tieback operation supervisors ensure

that records are current and reporting

is accurate.

maintenance and lasts for the full life

of the asset.

The use of centralisers across

operations reduces conductor

movement, prevents contact with the

jacket guide, significantly reduces

flowline and tree movement, improves

fatigue life, provides concentricity,

assists in tool location, ensures

more accurate driving and improves

strength and stability.

We are also able to provide the

specified specialist tieback equipment

required for customers operations, via

our rental equipment service.

For bespoke requirements we

provide designs for fixed blade

conductor centralisers, drop-in retrofit

centralisers, offset retrofit centralisers,

inner casing centralisers, adjustable

cellar deck centralisers, polymer

centralisers and remotely adjustable

centralisers. All designs can be varied

dependent on service life, expected

conductor / casing string movement

and environmental loading.

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Contact Us

Desig

nedandProducedbyTinFishCreativeCom

munications

www.aquaterraenergy.com

4 Albyn Terrace

Aberdeen, AB10 1YP

Aquaterra Energy Limited

t:+44 (0)1224 651250

e:[email protected]

ABERDEEN

Al Riyadh # 1, 19 Corniche El NileMaadi, 11431, Cairo, Egypt

Aquaterra Energy Egypt LLC

t:+202 2528 3356

e:[email protected]

CAIRO

St Johns Innovation Centre

Cowley Road, Cambridge, CB4 0WS


t:+44 (0)1223 422475

e:[email protected]

CAMBRIDGE

Unit C-8-3, 8th Floor, Block CMegan Avenue II, No.12, Jln Yap Kwan Seng

50450, Kuala Lumpur, Malaysia


t:+603 2164 4889

e:[email protected]

KUALA LUMPUR

Innovation House, Alkmaar Way

Norwich, NR6 6BF


t:+44 (0)1603 788233

e:[email protected]

NORWICH

aquaterra riser system

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