Activity Report (ShortCourseI) AAPG UB SC 2013

8/16/2019 Activity Report (ShortCourseI) AAPG UB SC 2013

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ACTIVITY REPORT 2014American Association of Petroleum Geologists Brawijaya University

Student Chapter (AAPG UB SC)

Geophysics Study Programme, Physics Dept. Brawijaya UniversityVeteran Street, Malang, Indonesia (65145)

E-mail : [email protected]

Secretary Office :

AAPG Student Chapter, Departement of Physics, Brawijaya University.

Veteran Street, M alang, Indonesia (65145)E-mail: [email protected]


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REPORT SUMMARY

Subject Short Course

TitleFundamental Of Electromagnetic Method In

Exploration Geophysics

Date February, 21th

2014

Speaker Mr. Djedi S. Widarto

Time/ Place

07.30 a.m-11.10 a.m/ Meeting Mathematics

and Natural Science Room, Faculty of

Mathematics and Natural Science Building.

Participant 32 participants

Total BudgetIncome : IDR 683.000

Expenditure : IDR 683.000


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TABLE OF CONTENTS

Report Summary ................................................................................................................. 2

Table of Contents .......................................................................................................................... 3

Preface ................................................................................................................................. 4

Activity News Short Course ................................................................................................ 5

Financial Report of Short Course..................................................................................... 12


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PREFACE

AAPG Student Chapter Brawijaya University has several routine activities in one

month. One of them is “One Day Short Course”. This event is held twice in each month. The

speaker is invited from oil and gas enterprise and instance. The event is planned to enhance

and improve student’s knowledge in geosciences world, especially in Petroleum Industry.

This report serves as a reflection for AAPG Student Chapter Brawijaya University

performances and the financial report of this event.We would like to thanks to everyone for their endless dedications for AAPG

Brawijaya University Student Chapter. Especially:

1. Our faculty advisor Mr. A.M. Juwono for the never ending wisdom, patience and

understanding.

2. All OCs of AAPG Indonesia, especially Mr. Geovanni, Mr. Agus M. Ustad for all the

supports and helps you have been given us.

3.

Head of Department of Physics Mr. Adi Susilo for the cooperation and advices.

4.

Lecturers, Guest Lectures and Instructors who has shares their knowledge and time

with us.

5.

ExComm Members AAPG Student Chapter Brawijaya University 2014.

6.

All the faculties’ member, students, and everyone who we can’t mention one by one

here. You guys just rocks.

Finally, we realized that there’s nothing perfect in this world. Therefore, if you found

anything that still needs to be revised, changed or if you have any suggestion for AAPG

Brawijaya University Student Chapter, please do not hesitate to contact us at the address

provided below. Last but not least, we hope that this report will be useful for everyone who

reads it.

Malang, March 8th 2014


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ACTIVITY NEWS SHORT COURSE

AAPG SC UB

II.1. Topic

Topic:

“FUNDAMENTAL OF ELECTROMAGNETIC METHOD IN EXPLORATION

GEOPHYSICS”

II.2. Speaker

Speaker of this short course is Mr. Djedi S. Widarto (Geocientist/ Chief New Energy and

Green Technology Upstream, Technology Center PT. Pertamina).

II.3. Venue and Schedule

Date : February, 21th

2014

Time : 7.30 – 11.25 a.m

Place : The Dean meeting room, Faculty of Mathematics and Natural Science

Building

II.4. Participant

This activity have been attended by 32 participants from Geophysics Students of

Brawijaya University and AAPG UB SC, as follow:

No Name Semester Presece

1 Romy Noor Y. Z. 2nd semester v

2 M. Yuzrival 4th semester v

3 Dwiandari Aldyla Kirana 4th semester v

4 Yulia Anggraeni 2nd semester v

5 Lucky Kriski Muhtar 4th semester v


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6 Reditha Ayu Rositadewi 4th semester v

7 Novalia Ena Agustin 2nd semester v

8 Nirwansyah Eka Bimantara 4th semester v

9 Danang Wahyu Purbojati 4th semester v

10 Zahratul Aina 2nd semester v

11 Suhendra Vebrianto 2nd semester v

12 Rizqi Fadlilah 2nd semester v

13 Adelia Primardani 4th semester v

14 Qori'ul Dennis Tugas Fiandani 4th semester v

15 Canella Kurnia 2nd semester v

16 Hadiyani Afina Rafika 4th semester v

17 Zuhrotul Firdaus 4th semester v

18 Chusnul Fuad 4th semester v

19 Antares Wira Andhika 4th semester v

20 Sheila Kusuma P. 2nd semester v

21 Ihda Arija Alfi Husna 4th semester v

22 Abdul Aziz Afif 4th semester v

23 Rizky Gustiansyah 8th semester v

24 Rizky Kusumawardani 8th semester v

25 Intan Setianingrum 4th semester v

26 Cholida Zia 4th semester v

27 Locana Indra P. 4th semester v

28 Nur Amalia Putri 4th semester v

29 Inge Larisa Ramadhani 4th semester v

30 Achmad Fauzan 2nd semester v

31 Yoel Marthen 6th semester v

32 Febriany Dian P. 2nd semester v


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II.5. Committee

This event by member of AAPG UB SC . The committee formation shall be as the

follow:

Faculty Advisor AAPG UB SC : Drs. Alamsyah M. Juwono, M.Sc

Chairman of Committee : Nur Amalia Putri

Secretary : Ihda Arija Alfi Husna

Treasurer : Inge Larisa Ramadhani

Public Relation : Asti Putri Siswanti

Harindya Fairuz Dwi Cahyani

Publication and Documentation : Muhamad Rahmawan

Alfadeo Vulgar Siantori

Transportation : Argya Hastubrata Basundara

Equipment : Muhammad Yuzrival

II.6. Event Schedule

Time Event Information

7.30 – 8.00 Registration Registration running well & on time

8.00 – 8.05 Opening by MC On time

8.05 – 8.10 Safety Induction Safety Induction running well & on

time

8.10 – 8.25 Opening Speech by The Head

of Department

The Head of Department gave

reception until 5 minutes & on time

8.25 – 10.30 Short course Short course early started 10 minutes

10.30 – 10.50 Discussion Discussion occured together with

Short course until at 11.25 a.m

10.50 – 11.00 Closing by MC Closing at 11.30 – 11.35 a.m because

discussion finished at 11.25 a.m

11.00 – 11.10 Photo Section Photo Section done at 11.45 a.m


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II.7. Summary of Activity

The program was

started on time, at 07.30

a.m. The number of

participants is initially

targeted to be 30 people. In

the end, there were 32

participants. The participants

came from geophysics

student of Brawijaya

University. The success ratio of publication is 100%. The ticket fee is IDR 5.000 for all

paticipant and committee. The budget was successfuly reduced into IDR 123.600 from the

suggested budget of IDR 189.000. The discussion accomodated 8 questions from participant.Participant could get the copy of presentation slides for free. The speaker of this event is Mr.

Djedi S. Widarto, M.Sc (Geocientist/ Chief New Energy and GreenTechnology Upstream,

Technology Center PT. Pertamina).

As we know, Geophysics is the study of the earth by quantitative physical methods,

especially by seismic reflection and refraction, gravity, magnetic, electrical, electromagnetic,

and radioactivity methods. Meanwhile exploration geophysics is making and interpreting

measurements of physical properties of the earth to determine subsurface conditions, usually

with an economic objective, e.g., discovery of fuel or mineral deposits. Properties measured

include seismic, gravity, magnetic, electric, and temperature.

Presentation from Mr. Djedi


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There are many

geophysical methods which

each method can be used in

specific condition.

Geophysical method can be

categorized as surface

method and borehole

method. Surface method

consist of seismic methods,

potential field methods,

electrical method,

electromagnetic method, and

nuclear method. Borehole method

consist of in-hole procedures, cross-hole procedures, surface to borehole procedures, and

logging techniques.

One of electromagnetics methods is magnetotelluric (MT). It is a geophysical methodto estimate subsurface electrical property (resistivity or conductivity) distribution by

measuring naturally time-varying EM fields. Parameter of this method is resistivity and

conductivity. Source of MT signals comes from interaction of the Earth’s permanent

magnetic field with particles from solar wind and with atmospheric lightning which induce

electric currents in the subsurface.

There are impact of pore fluids and geoogic processes on resistivity. Saline brine, clay

alteration, dissolution, temperature, pressure, faulting, and shearing are factor which cause

increasing of resistivity. Then, factor which cause decreasing of resistivity are hydrocarbones,

carbonate cementation, and silicification.

This is relationship between electric (E) and magnetic (H) fields. For a homogeneous or

layered (1-D) medium

Ex= ZHy………………………………………………….. (1)

which Z=scalar impedance. For a medium with 2-D symmetry

Participants of Short Course


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Ex= ZxyHy……………………………………….. (2)

E y= Z yxH xZ xy≠ Z yx ……………………….(3)

For a general 3-D medium

E x= Z xxH x+ Z xyH yE = ZH …………………………….(4)

E y= Z yxH x+ Z yyH yZ= tensor impedance……………………(5)

MT has advatanges and disadvantages. The advantages are great depth of penetration,

provides information in

non-seismic areas, no

transmitter required, light-

weight equimpment, good

production rate, can access

almost anywhere, cause

little impact on

environment, has better

resolution than gravity or

magnetic, and well-developed 2-D/3-D

interpretation procedures.

The disadvantages are

coupling with lateral

conductors, irregular natural signal and industrial noise, resolution less than seismic, complex

data processing, static shift of apparent resistivity curves sometimes significant, and inversion

techniques rely on smooth models, tougher to interpret in complex areas.

In the aquisition of MT, there are mobile acquisition unit and remote reference

acquisition unit. Mobile acquisition unit is used to find data. The place where data is

collected must be deserted, so the noise can be minimalized. Remote reference acquisition

unit is used to be referenced and it must motionless. Data processing include measurement of

orthogonal EM field, extract impedance tensor, then we will get apparent resistivity and

Presentation from Mr. Djedi


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phase sounding curves (ohm.m) and ∅ (degree) vs frequency (Hz). Data presentation

include pseudo-section, data modelling, and bostick transform.

Participants were really interested with the course’s topic, proven by the activeness

of the participants in the discussion session.

Particiants Photo Session with Mr. Djedi


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FINANCIAL REPORT OF AAPG UB SC

Secretary

No. Subject Details Estimate (IDR)

1. Letter 20.000

2. Atk 20.000

3. Bookkeeping 25.000

Sub Total 65.000

Event

No Subject Details Estimate (IDR)

1. Paper Bag 5.000

2. Souvenir for Speaker 50.000

3. Taxi 100.000

Sub Total 155.000

Konsumption

No Subject Details Estimate (IDR)1. Snack for Speaker 5.000

2. Snack for Lecture 2 x @Rp. 5.000 10.000

3. Snack for Participants 30 x @Rp.2.000 60.000

4. Glass Aqua 2 x @Rp. 20.000 40.000

5. Bottle Aqua 5 x @Rp. 2.000 10.000

6. Lunch for Participants 30 x @Rp.7.000 210.000

7. Lunch for Speaker 15.000

Sub Total 350.000

PDD


1. Banner 50.000

2. Certificate 30 x @Rp. 1.500 45.000

3. Reward for Participants 18.000

Sub Total 113.000


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TOTAL EXPENDITURE IDR 638.000

INCOME


1. Geocentral 383.000

2. Short Course Participants 30 x 10.000 300.000

Sub Total 683.000


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Lampiran

Activity Report (ShortCourseI) AAPG UB SC 2013

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