Portfolio_Aryo Bimo Oetomo_1

ARYO BIMO OETOMOPortfolio

2017

Welcome

Thank you for spending your time to view my portfolio.

This portfolio would give you a deeper understanding of my experiences and skills I have gained over the past few years of my career.

I hope that this will allow you to get a deeper insight into my skills and how it can be contributed to your company.

I would be happy to discuss more in detail and I am able to reached using the contact information at the bottom of the page.

2017 ARYO BIMO OETOMO – [email protected] - +62 –811 – 1600-382

INDEX

Welcome 2

What I Like Most 3

A Brief Milestone 4

Achievement 5

Interest and Community Involvement 6

Mining Engineering, Institut Teknologi Bandung (2007 – 2012) 7

PT. Artumin Indonesia (2012 – 2014) 9

Master of Energy, University of Auckland (2014 – 2015) 11

PT. Mucoindo Prakasa (2015 – 2017) 15

Training Course & Other Skills 20

What I Like Most

Earth Science

Geology, Geophysics, HydrogeologyNature

Mining Engineering

Mine Operation, Pit Design, Mine Planning,

GIS Traveling

EnergyRenewable Energy : Geothermal, Hydro, Biomass, etc.

Diving

ARYO BIMO OETOMO – [email protected] - +62 –811 – 1600-383 2017

A Brief Milestone

2007 - 2012

• Studied at Mining Engineering Department, sub-major Exploration Engineering, Institut Teknologi Bandung (2007-2012)

• Exchange student scholarship program, Energy & Resource Engineering, Chonnam National University ( August 2010 – February 2011)

2012 - 2014

• Worked at PT. Arutmin Indonesia as Shift Supervisor in Satui Mine and Kintap Mine Project ( April 2012 – May 2014)

2014 - 2015

• LPDP Scholarship Awardee PK - 11

• Master Degree in Master of Energy Program, University of Auckland, specified in geothermal studies

2015 - 2017• Working at PT. Mucoindo Prakasa as Engineering Supervisor (September 2015 – present)


Achievements

5

First Class Honours in Master of Energy, University of Auckland - 2015

First in Course Award in Geotherm 603 (Geothermal Geology), Semester Two - 2014, University of Auckland - 2015

Master degree scholarship from International Scholarship Indonesia Endowment Fund for Education (LPDP), Ministry of Finance The Republic of Indonesia, Batch 11 - 2014

Exchange student scholarship program from Institut Teknologi Bandung (ITB) and ChonnamNational University partnership – 2010

Award for Outstanding Academic Achievement at the Undergraduate Program first semester-2009-2010, Institut Teknologi Bandung - 2010

Award for Outstanding Academic Achievement at the Undergraduate Program second semester-2008-2009, Institut Teknologi Bandung – 2009

ARYO BIMO OETOMO – [email protected] - +62 –811 – 1600-382017

Interest and Community Involvement

6

Join Auckland University Tramping Club (AUTC) and Auckland University Rock Climbing Club (AURAC), University of Auckland, New Zealand – 2014- 2015

Chief of Mining Engineering Student (class of 2007), Institut Teknologi Bandung, Indonesia –2008 - now

Secretary of Internal Division at Mining Student Organization, Institut Teknologi Bandung, Indonesia – 2009 – 2010

Lecture Assistant at several courses in Institut Teknologi Bandung : Mineragraphy (February –May 2011), Numerical Method ( January – May 2010), Crystal and Mineralogy (August –December 2009)


Mining Engineering, Institut Teknologi Bandung (2007 – 2012)

• Thesis - “Correlation Study of Grain Size Distribution, Colour, Grade, and Mineralogy Characteristics of Lateritic Nickel Zone in Tinanggea, Konawe Selatan Regency, South East Sulawesi Province”, published as proceeding in Annual Meeting of Indonesian Mining Professional Association (PERHAPI) XXI, Jakarta - 2012

• Each zone of lateritic nickel deposit; top soil, limonite, transition, saprolite has different characteristics of grain size distribution, colour grade of Ni, Fe2O3, Cr2O3, MnO, and mineralogy. This characteristics would be very important for initial data in the exploration phase.


Silica boxwork is found mainly in top soil and limonite zone nearby the earth surface

Soil sample of nickel laterite deposit

XRD graph helps to determine mineral

occurrence in sample

Mining Engineering, Institut Teknologi Bandung (2007 – 2012)

• Minerals that commonly arise at top-soil and limonite zone are goethite and quartz, while in the transition and saprolite zone is dominated by nontronite, antigorite, and hydrous nickel silicate.

• Transition and saprolite zone are rich with nickel, whilst top soil and limonite which usually located nearby the earth surface are commonly have high iron grade.

• Dark brown-reddish color indicates high iron grade while lighter and greenish colour indicates higher nickel grade.

• Generally, the deeper the depth, the coarser the grain size. Coarse grain size in top soil and limonite zone contents silica boxwork.

• Topography and structure affect the thickness of laterite horizon. Moderate topography and lot of structures will form a thick lateritic zones.

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Cross section which defines different zone of lateritic nickel deposit

Comparison between zone, grade, grain size, mineralogy in

one borehole


PT. Arutmin Indonesia (2012 – 2014)

• Supervising coal mining operation at pit and coordinate it with mining contractor

• ROM (Run-Off Mine) management

• Mine plan and coal quality monitoring

• Controlling and coordinating any construction and maintenance work at mining area

• Supervising and monitoring coal production activity at crushing plant and port


Ensure that coal getting activity especially for thin seam is done appropriately based on

procedure in order to maintain coal recovery and quality

PT. Arutmin Indonesia (2012 – 2014)

• Supervising coal mining operation at pit and coordinate it with mining contractor

• ROM (Run-Off Mine) management

• Mine plan and coal quality monitoring

• Controlling and coordinating any construction and maintenance work at mining area

• Supervising and monitoring coal production activity at crushing plant and port

10

DATECOAL SEAM / MINE

LOCATION

MINE

LOCATION

STOCKPILE

STATION

BELT SCALE/

WEIGHT

BRIDGE %ASH

26-Feb-13 SR4 KRESNA R-G3 KRESNA GRAB SAMPLE - 5.15

28-Feb-13 SR4 KRESNA R-G3 KRESNA CHECK SAMPLE T1 - 8.27

28-Feb-13 SR4 KRESNA R-G3 KRESNA CHECK SAMPLE T1 - 8.67

28-Feb-13 SR4 R-G3 KRESNA CHECK SAMPLE T1 - 5.47


Quality control based on sampling test at port. Any deviation on coal quality should be

responded by operation team

Field report, complaining to

contractor about

contamination that has been found in ROM

stockpile

Master of Energy, University of Auckland (2014–2015)

• Mini Research - “Characterizing Siliceous Sinter Using Seismic Velocity Measurement”, published as poster in 36th New Zealand Geothermal Workshop, Auckland, New Zealand – 2014

The focus of this study is to learn about how seismic properties behave with different characteristics of silica sinter collected form various location in New Zealand and Utah, USA.

This study suggested that it is not only density and porosity which control the velocity but also pore shape, compressibility, and structures of the sinter.

11

NDT ultrasonic technique One transducer sending ultrasonic wave to another one passing through core

sample. P-wave and S-wave which read by

oscilloscope determine the velocity

Various kind of sample: A. Concrete, B-C. Opal A – sinter, D. Quartz


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Generally, density increase with maturity of silica phaseand decrease as porosity increase. Moreover, thedenser and the lower porosity that rock has, the greateralso the seismic velocity obtained. In this case, quartzhas highest velocity and density compared to opal-Aand opal-A/CT sinter.

Pore shape might play more significant effect tovelocity rather than porosity. Flat pores is morecompressible than spherical pores, thus produce aslower velocity. It is also affect the fluid saturationcondition, where spherical pores are less significantlyaffected by pore fluid changes rather than flat pores.

Roundness, cementation, and sorting condition are alsoimportant aspect that influence velocity value.However, a further study and analysis should beimplemented to quantify the pore geometrycharacteristics within the samples to give morecomprehensive result.

Sample Silica phase LocationVp

(km/s)

Vs

(km/s)

Dry

Density

(g/cm3)

Particle

Density

(g/cm3)

Porosity

(%)Vp/Vs

R3 Quartz Opal Mound 4.83 2.97 2.28 2.46 7.34 1.63

KOH Quartz Kohuamuri 6.14 4.03 2.23 2.26 1.61 1.52

Concrete - Orakei Korako 3.54 1.99 1.97 2.43 19.14 1.77

R8 Opal-A/CT Opal Mound 3.14 1.63 1.86 1.97 5.85 1.93

RI a Opal-A Opal Mound 3.98 2.23 1.64 1.80 8.65 1.78

RI b Opal-A Opal Mound 3.70 2.01 1.85 1.99 6.95 1.84

S43 Opal-A Geyser Valley 3.44 1.99 1.18 1.56 23.88 1.73

T10 Opal-A Opal Mound 3.13 1.59 1.56 1.95 19.81 1.97

S34 Opal-A Geyser Valley 3.33 1.97 1.48 1.85 19.94 1.69



Project Study

Mineralogy

XRDMineral distribution

especially on clay

ESEMExamine

hydrothermal alteration process

Effects of hydrothermal

alteration in terms of mineral

composition, rock textures and

structuresPetrology

Mineral content and rock texture

Physical Properties

Seismic Velocity P-wave and S- waves

CT – ScanObserve grain and

pore characteristics (size & shape)

Correlation between grain and pore

characteristic to seismic velocity

behavior and density & porosity

Density and Porosity Rock Properties

Conclusion

• Master Research - “Applying Mineralogy and Physical Properties Analysis to Investigate Geothermal Field”, presented in Indonesian Scholars International Convention (ISIC), King’s College London, United Kingdom –2015

• The goal is to find the correlation between mineralogy and physical properties helps to obtain a full understanding of the dynamic processes that take place in the subsurface.

• A total of 15 core samples which were collected from different boreholes located in Tauhara and Wairakei Geothermal Field were analysed. Several methods were used including XRD (X-Ray powder Diffraction), ESEM Environmental Scanning Electron Microscopy), petrology, micro-CT (Computed Tomography) scanning.

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14

Poorly-sorted grains, strong grain-to-grain contacts and cementation, weak alteration, low porosity and permeability high velocity.

High temperature fluids along with high pressure strong and consolidated rocks.

Medium-high temperature propyllites fill pores and veins contact between grains become denser and stronger strengthening the cementation of the rock. decreasing of porosity and permeability.

A fluid withdrawal of more than 50 years in Waiora Formation have decreased the pressure in non-compacted, compressible sediments located in shallower depth, thus causing subsidence.

Clay content, grain-to-grain contacts and cementation, and rock textures are suggested to play a bigger role in influencing the seismic velocity, rather than pore characteristics.


Using CT-Scan, petrology microscope, ESEM to characterize

hydrothermal alteration, mineralogy

and physical properties


PT. Mucoindo Prakasa (2015 – 2017)

• PIPING INSTALATION EPC-1 BANYU URIPPROJECT (OCTOBER 2015 – MARCH 2015)

CLIENT : EXXON MOBIL CEPU LIMITED

MAIN CONTRACTOR : TRIPATRA-SAMSUNG CONSORTIUM

Monitoring piping construction activity and coordinate it with main contractor and construction workers.

Calculating piping construction progress in order to be sentenced in monthly invoice

Calculating worker salary at site project and send it to head office to be executed.

Assisting Site Manager on project management



• FEASIBILITY STUDY OF BUKIT PELAWI LIMESTONE MINING (MARCH – JULY 2016)

CLIENT : PT. SEMEN BATURAJA, TBK.

Composing a feasibility report which comprise geological modeling, resource and reserve calculation, hydrology and hydrogeology analysis, geotechnical investigation, pit design, mine planning, scheduling, and financial analysist.

16

Geological modelling

Define the deposit based on CaCO3 grade

and elevation

Breakdown mining sequence per year


17

Skills Developed using Surpac and ModflowSoftware

• Geological Modeling

• Hydrogeological modeling and simulation

• Pit Design

• Mine PlanningHydrogeology modeling predict

the underground waterflow, drawdown of water table, etc

Pit design and mine planning Design the

most optimum pit to achieve the maximum

deposit reserve and optimize the deposit

production and overburden dump

sequence



• FEASIBILITY STUDY OF MINI HYDRO POWER PLANT (PLTMH) IN LAMASI RIVER(AUGUST – DESEMBER 2016)

CLIENT : PT. TAMARIS HYDRO

Assigned as project coordinator who responsible for managing topography, seismic refraction, hydrology analysis, and soil investigation (geotechnical) survey.

Controlling budget and submitting financial report.

Coordinating with local authorities and community.

18

Responsible for planning, supervising and allocating local manpower fot every

survey activity in field


19

Skills Developed

Geographic Information System –using Global Mapper 17.2 & Surfer 17

Detail design using Auto CAD

Tmou

Kd

Qou

Pb

Using Global Mapper Software to put any information we need (geological map, contour map, geomorphology feateures, etc) in one map

Using Auto CAD for design seismic line and borehole location planning in order to be used for further technical

and civil engineering analysis


Training / Courses

• Surpac 6.3 Software Training Course, PT. Reka Bumi, Bandung – 2016

• Modflow 2010 Software Training Course, PT. Reka Bumi, Bandung – 2016

• Completion in Graduate Development Program at PT. Arutmin Indonesia - 2013

• Minescape Full Modul Training (Core, Stratmodel, Open-Cut), PT. ArutminIndonesia – 2012

• Trimble R8 GNSS Receiver for Post Process and Real Time Kinematic Surveying, PT. Arutmin Indonesia - 2012

• Global Mapper 17.2

• Surfer 13

• Auto CAD 2015

• Agisoft Photoscan

• Aerial Mapping using Drone

Footer text here20

Other Skills

2017

3D Map and DEM (Digital Elevation Map) Generated from aerial mapping

using quadcopter drone

Thank you

Documents

Portfolio_Aryo Bimo Oetomo_1