-2920 Modeling and Characterization of Novel Deepwater ... · Modeling and Characterization of...
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OrcaFlex 9.8e: Catenary Riser J-lay.sim (modified 12:50 on 30/03/2017 by OrcaFlex 9.8e) CATENARY Riser End Force at End A vs Sea Z Acceleration at X=0.00, Y=0.00, Z=0.00 Sea Z Acceleration (m/s^2) at X=0.00, Y=0.00, Z=0.00 m, t = -8.000 to 16.000s 0.5 0 -0.5 -1 -1.5 -2 CATENARY Riser End Force (kN) at End A, t = -8.000 to 16.000s 200 150 100 50 0 Modeling and Characterization of Novel Deepwater Marine Risers Amaechi Chiemela Victor 1 2 nd Year PhD Student – Engineering Department Supervisor: Prof. Jianqiao Ye 1 Email: [email protected] • Different types and sizes of pipes are used, like the drill pipes, risers and the horizontal pipes. The dimensions can be about 76cm (30”) as they are large capacity pipelines. • The history of oil exploration dates to 1891 when the first oil well was drilled at Grand Lake St Mary’s, Ohio. • In 2003 in Gulf of Mexico, only 35% of production was from wells at depths of >300m. By 2015, that figure was 95%. PGRC 2017 , 6 th May 2017 • I wish to acknowledge the support of my Supervisor Prof. Jianqiao Ye. • I also appreciate my sponsors NDDC and Lancaster University Engineering. • Special thanks to the staff and members of the Engineering Department. • To develop a model for composite risers, • To study the fatigue behaviour and characteristics of the riser and visualise the flow of oil/gas in pipes in deep sea, • To optimize the composite riser. Loads on Marine Risers Wave forces Current forces Z Y X Foundation casing Internal and external fluid pressure Weight, (W r ) of Composite riser Buoya ncy Mea n Wat er level Vess Top Connectio n Bottom connection Hydrodynamic Analysis Presentation of some results Acknowledgment Objectives Conclusion Orcaflex Design Oil and Gas Industry Mainstream Offshore Risers Onshore Mooring lines Platforms Pipelines, etc. Flexible Risers Rigid Risers Hybrid Risers Composite Risers Catenary Equation: Governing Equations OrcaFlex 9.8e: pipeline laying 2.sim (modified 21:22 on 27/03/2017 by OrcaFlex 9.8e) Time History: Vessel1 Supports Lx-Force Time (s) 15 10 5 0 -5 Vessel1 Supports Lx-Force (kN) -2920 -2930 -2940 -2950 -2960 -2970 The study on Marine riser behaviour is very important. Structures in water behave differently from those structures not in water. Composite materials offer a range of benefits that could improve riser technology. Although composite risers were first deployed in deepwaters in 2002, there are still some challenges, e.g. standards Why Choose Composite Risers? + + = () The Force Matrix: . 4 4 − . 2 2 − . − () = 0 For Static Analysis: Lancaster University Postgraduate Research Conference 2017 History on Offshore Deepwaters Motivation
Transcript of -2920 Modeling and Characterization of Novel Deepwater ... · Modeling and Characterization of...
OrcaFlex 9.8e: Catenary Riser J-lay.sim (modified 12:50 on 30/03/2017 by OrcaFlex 9.8e)CATENARY Riser End Force at End A vs Sea Z Acceleration at X=0.00, Y=0.00, Z=0.00
Sea Z Acceleration (m/s 2̂) at X=0.00, Y=0.00, Z=0.00 m, t = -8.000 to 16.000s0.50-0.5-1-1.5-2
CA
TE
NA
RY
R
ise
r E
nd
F
orce
(kN
) a
t E
nd
A
, t =
-8
.0
00
to
1
6.0
00
s
200
150
100
50
0
Modeling and Characterization of Novel Deepwater Marine RisersAmaechi Chiemela Victor1
2nd Year PhD Student – Engineering DepartmentSupervisor: Prof. Jianqiao Ye
1Email: [email protected]
• Different types and sizes of pipes are used,like the drill pipes, risers and the horizontalpipes. The dimensions can be about 76cm(30”) as they are large capacity pipelines.
• The history of oil exploration dates to 1891when the first oil well was drilled at GrandLake St Mary’s, Ohio.
• In 2003 in Gulf of Mexico, only 35% ofproduction was from wells at depths of>300m. By 2015, that figure was 95%.
PGRC 2017 , 6th May 2017
• I wish to acknowledge the support of my Supervisor Prof. Jianqiao Ye.• I also appreciate my sponsors NDDC and Lancaster University Engineering.• Special thanks to the staff and members of the Engineering Department.
• To develop a model for composite risers, • To study the fatigue behaviour and
characteristics of the riser and visualise the flow of oil/gas in pipes in deep sea,
• To optimize the composite riser.
Loads on Marine Risers
Wave forces
Current
forces
Z
Y
XFoundation
casing
Internal and
external fluid
pressure
Weight,
(Wr) of
Composite
riser
Buoya
ncy
Mea
n
Wat
er
levelVess
elTop
Connectio
n
Bottom
connection
Hydrodynamic Analysis
Presentation of some results
Acknowledgment
Objectives
Conclusion
Orcaflex Design
Oil and Gas
Industry
MainstreamOffshore
Risers
Onshore
Mooring lines
Platforms
Pipelines, etc.
Flexible Risers
Rigid Risers
Hybrid Risers
Composite Risers
Catenary Equation:
Governing Equations
OrcaFlex 9.8e: pipeline laying 2.sim (modified 21:22 on 27/03/2017 by OrcaFlex 9.8e)Time History: Vessel1 Supports Lx-Force
Time (s)151050-5
Ve
sse
l1 S
up
po
rts
Lx-
Fo
rce
(kN
)
-2920
-2930
-2940
-2950
-2960
-2970
The study on Marine riser behaviour is very important. Structures in water behave differently from those structures not in water.
Composite materials offer a range of benefits that could improve riser technology. Although composite risers were first deployed in deepwaters in 2002, there are still some challenges, e.g. standards
Why Choose Composite Risers?
𝑀 𝑥 + 𝐶 𝑥 + 𝐾 = 𝐹(𝑡)The Force Matrix:
𝐸𝐼.𝑑4𝑦
𝑑𝑥4− 𝑇𝑥.
𝑑2𝑦
𝑑𝑥2−𝑊.
𝑑𝑦
𝑑𝑥− 𝑓(𝑥) = 0
For Static Analysis:
Lancaster University Postgraduate Research Conference 2017
History on Offshore DeepwatersMotivation
