PROPOSAL DEFENSE PRESENTATION

CHARACTERISTICS OF SOIL DEFORMATION ADJACENT TO

PENETRATING SPUDCANSTUDENT : MOHAMAD NORFIRDAUS BIN AZMY (13135)

SUPERVISOR : ASSC. PROF. DR. INDRA SATI HAMONANGAN HARAHAP

INTERNAL EXAMINER: IR IBRAHIM BIN KAMARUDDIN

OUTLINEINTRODUCTION

BACKGROUND OF STUDY OBJECTIVE SCOPE OF STUDY PROBLEM STATEMENT

LITERATURE REVIEW THE MOBILE JACK-UP RIGS PARTICLE IMAGE VELOCIMETRY

METHODOLOGYREFERENCES

INTRODUCTION

The objective of the research is to:

1) To identify the characteristics of soil deformations adjacent to penetrating

spudcan.

OBJECTIVE

D

SCOPE OF STUDY1. The study will be focus on behavior of the soil deformation due to the

penetrating spudcan.2. The aim is to identify the safe distance between Jack-Up Rigs and the

Fixed Platform. The whole process is designed to be completed in two phases which are :-i. The first phase is to doing research as well as gathering the required

data of the study area.ii. Then, the second phase is to the implementation part should include

the process in obtaining the data from the experiment and simulation for the study area as the output of the project.

PROBLEM STATEMENT1. The conventional method of geotechnical work estimation is invalid

because it is based on the engineer experience which is lead to abuse the nature and not cost effective.

2. The misjudgment will brings delay to the progress of project.

LITERATURE REVIEWMost of the world’s offshore oil and gas drilling in water depths up to 120 m is performed from self-elevating mobile ‘jack-up’ units. Typical units consist of a buoyant (approximately) triangular platform resting on three independent truss-work legs, each with a rack and pinion system used to jack the legs up and down through the deck (Cassidy, 2011).

Mobile offshore Drilling Units (MODU)

Turbine Installation Vessel (TIV)

Barges

TYPES OF MOBILE JACK-UP (Wikipedia, 2013)

MOBILE JACK-UP RIG

FOUNDATION OF MOBILE JACK-UPExtended mat beneath all the length/ Suction

Caissons

Individual spud can footings.

Before a jack-up can operate at a given location a site-specific assessment of its operation must be performed. (Cassidy, 2011)

Basically, this types of the foundation will be based on the soil conditions. (Hossain & Hu, 2003).

These types of foundations are being considered for use in various offshore applications including as foundations for mobile drilling rigs (jack-ups) and offshore wind turbines.(Byrne, &Cassidy, 2002)

SPUD CAN FOUNDATION

20m

The spud cans are can be circular, square or polygonal, and they vary in size. The largest spud can being used, to date, is more than 20 m wide (Fugro & MatthewsDaniel , 2013).

The pointed cone below the spudcan is to prevent lateral sliding in hard seabed conditions, while the shallow conical shape above the point is to give a gradual variation of bearing resistance with penetration. (Hossain and Hu , 2003)

SOIL DEFORMATIONS DUE TO SPUDCAN FOUNDATION

• During the installation of spudcan foundation and also pipeline, a large deformations of soil is displaced (Leung, 2008).

• The contribution concentrates on the large soil displacements associated with the softer sites. (Mirza et al., 1988)

• Due to this condition, the stressing to the piles due to the lateral deformations caused by the penetration of the spudcan may be develop if the position of the of Mobile Jack-Ups Rigs and Permanent Jacket Platform are closed. (Yongren, Xiaobing, & Xuhui, 2010).

PARTICLE IMAGE VELICOMETRY (PIV) Particle Image Velocimetry (PIV) is an optical method of

flow visualization in order to obtain instantaneous velocity measurements and related properties in fluids. (Wikipedia, 2013).

More than that, PIV also can provide instantaneous velocity measurements over global (2D or 3D) domains with high accuracy. (Prasad, 2000)

A PIV system typically consists of several subsystems. In most applications tracer particles have to be added to the flow. (Jahanmiri, 2011).

For accurate PIV analysis, it is ideal that the region of the flow that is of interest should display an average particle displacement of about 8 pixels. (Wikipedia, 2013).

The use of natural seeding is sometimes acceptable, if enough visible particles are naturally present to act as tracers for PIV. (Jahanmiri, 2011)

Type Material Mean diameter in µm

Solid Polystyrene 10 - 100

  Aluminum flakes 2 - 7

  Hollow Glass Spare 10 - 100

  Granules for Synthetic coatings 10 - 500

Liquid Different oils 50 - 500

Gaseous Oxygen bubbles 50 - 1000

SEEDING MATERIALS FOR LIQUID FLOW

METHODOLOGY

•Select and define research topic•Identify the objective of the project and also the problem statement of the project.• Initial consultation with lecturer and other competent person.

Problem Statement and Objective of

the project

•Theoretical research and comprehensive literature review about the project and also the method use which is PIV.•Produce Extended Proposal and also Project Proposal Defend.

Literature Review

•Set-up the equipment for experiment especially for PIV.•Understanding the theoretical concept about before start the experiment and also familiarization of software.•Submission of Interim Report

Input Parameters and checking the

model

•Start doing the simulation and experiment of the project using PIV. •Data gathering during the project.

Computer model data analysis and

simulation

•Result analysis with consultation by lecturer.•Pre-SEDEX and submission of Technical Paper•Oral presentation based on the result obtain.

Result data analysis

•Preparation of dissertation and draft of final report•Submission of project dissertation and final report.

Documentation and Reporting

METHODOLOGY

COMPLETED

MILESTONE

GANTT CHART AND MILESTONE

REFERENCES[1] Sicilino R.J., Hamilton J.M., and Murff J.D. (1990). Effect of Jackup Spud Cans on Piles. Offshore Technology Conferences, 381-390. Retrieve from http://www.onepetro.org/mslib/servlet/onepetropreview?id=OTC-6467-MS

[2] Mirza U. A., and Sweeney M. (1988). Potential Effects of Jackup Spud Can Penetration on Jacket Piles. Offshore Technology Conferences, 147-157. Retrieve from http://www.onepetro.org/mslib/servlet/onepetropreview?id=OTC-5762-MS

[3] Hossain M.S., and Hu Y. (2003). Spudcan Foundation Penetration into Uniform Clay. The Thirteenth (2003) International Offhore and Polar Engineering Conferences, 647-652. Retrieve from http://e-book.lib.sjtu.edu.cn/isope2003/pdffiles/volume2/2095p647.pdf

[4] Wu Y. R., Lu. X, and Zhang X. (2010). Effects of the Spudcan Penetration on the Adjancent Foundations. The Open Ocean Engineering Journal, 2010, 28-44. Retrieve from http://www.benthamscience.com/open/tooej/articles/V003/SI0018TOOEJ/38TOOEJ.pdf

[5] Byrne B.W., and Cassidy M.J. (2002). Investigation The Response of Offshore Foundations in Soft Clay Soils. 21st International Conference on Offshore Meachanics and Artic Engineering, 1-13. Retrieve from http://www-civil.eng.ox.ac.uk/research/offshore/reports/omae2002-28057.pdf

[6] Wikipedia The Free Encylopedia. Jack up rigs. (June, 2013). Retrieved Jun 11, 2013, from http://en.wikipedia.org/wiki/Jackup_rig

[7] Randolph M.F., Wang D., Zhou H., and Hossain M.S. (2008). Large Deformation Finite Element Analysis for Offshore Applications. 21st International Conference of International Association for Computer Methods and Advances in Geomechanics, 3307-3318. Retrieved from http://www.civil.iitb.ac.in/~dns/IACMAG08/pdfs/M29.pdf

[8] Cassidy M. J. (2011). Offshore Foundation Systems for Resurce Recovery: Assessing the Three- Dimensional Response of Jack-up Platforms. Retrieved from http://link.springer.com/article/10.1007%2Fs12205-011-0003-9

[9] Prasad K. J. (2000). Particle Image Velocimetry. Retrieved from http://tejas.serc.iisc.ernet.in/currsci/jul102000/review%20article.pdf

[10] Wikipedia The Free Encylopedia. Particle Image Velocimetry. (June, 2013). Retrieved Jun 11, 2013, from http://en.wikipedia.org/wiki/particle_image_velocimetry

[11] Velocimetry Knowledge United. Particle Image Velocimetry: PIV Applications (June, 2013). Retrieved Jun 24, 2013, from http://www.velocimetry.net/application.html[12] Jahanmiri M. Particle Image Velocimetry. Fundamentals and Its Applications (2011). Retrieved from http://publications.lib.chalmers.se/records/fulltext/138219.pdf

Q & A

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