2 Days Workshop : Subsurface Mapping

2 Days Workshop : Subsurface Mapping Techniques

Speakers : Ir. Mustoto Moehadi MM

Place : Seminar B Room, Dekanat FMIPA UI

Date& Time  : Thursday, December 22th 2011

10.00-16.00

Saturday, December 24th 2011

08.00-16.00

Fee : IDR 30.000 (for 2 Session) * Include lunch, snack and certificate

CP : Randy Rachman (+6285694497323)

As geophysics students, we are learning about any knowledge those may be related to the oil and gas industry nowadays. We learn about the method which is usually used in this industry. We also learn about how to collect the data from real field, how to process them, and also how to interpret them so we can know where the bright spot is. One of the most important techniques and widely used in this industry is subsurface geologic mapping. Geophysicists are expected to understand and be able to efficiently and accurately generate many types of subsurface maps. Nevertheless, many geophysicists have not had sufficient formal training in the fundamental principles and method that underlie accurately constructed subsurface maps, whether the data source is a seismic interpretation, well log correlation or both. Therefore, as a student who will work as a geophysicist of course we are also required to learn these things.

Geophysics students also have to understand the subsurface geometry, incorporating both structural and stratigraphic  framework is essential to understanding the maps development of potential reservoirs. Subsurface maps represent the cornerstone of data presentation and information transfer in oil & gas exploration & development, whether well log based, seismic based, or both. We focus here on the fundamental principles and methodologies of accurately conveying critical data and information via subsurface mapping.

The purpose of this course is to capture the geophysicist works and roles in International Oil and Gas companies and to provide the work skills of the future geophysicists. Thus, the students are expected to become qualified geophysicists.

UI Proudly to Announce 1st & 3rd Place for Ocean Schlumberger Petrel Plug-in Competition

Geophysical Team, Physics Department, Faculty of Mathematic and Natural Sciences UI succeeded in taking away 2 positions at a time, 1^st place and 3^rd place in prestigious competence in commercial software development in oil and gas industry. This final competition includes 10 teams from 5 top universities in Indonesia which has a geosciences major in the university like UI, ITB, UGM, UPN and Trisakti. They are competing against each other for a prize of 10.000 USD. The prize was given at Schlumberger witnessed by Vice Chancellor UI Mr.  Sunardji, SE, MM.

2 teams from UI under supervisor of Dr. rer. nat Abdul Haris (reservoir Geophysics Lecturer, Faculty of Mathematic and Natural Sciences UI) presented 2 projects called “CBM Modeling for Estimating Methane Gas Reserve”  and “ Spectral Decomposition for Direct Hydrocarbon Indicator”. These 2 projects from UI could attract attention away from the judges which is a combination from experts of oil and gas industry like Chevron, Pertamina, Medco and Sclumberger itself brought in 3 direct experts from Houston, USA. This competition is a breakthrough in creating a synergy between college to build and develop oil and gas technology in Indonesia especially and in international scale in general.

2 softwares developed by UI team can give a new innovation in CBM exploration and detecting hydrocarbon content which can be either oil or gas trapped under earth’s surface, as mentioned by Dr. rer. nat abdul Haris as a team supervisor which has been supervising the 2 teams’ preparation for almost 3 months. These 2 teams from UI is a combination of Geophysics student, Faculty of Mathematic and Natural Sciences UI and also Computer Science faculty UI.

GUEST LECTURE “OIL & GAS INDUSTRY GEOPHYSICS” BY CONOCO PHILLIPS

 

This talk will provide students with an outline of life as a geophysicist working for an international  Oil and Gas Company in Indonesia and a summary of the business drivers for geophysical work. Included will be some examples of day to day technical geophysics tasks and challenges including depth conversion, seismic imaging, reservoir characterization in clastic and fractured basement environments. There will be a discussion of the benefits of seismic data and its inherent limitations and uncertainties. The contrasting challenges of wild cat exploration work and development geophysics will also be discussed together with how oil company geophysicists interact with service companies and government departments. The importance of the geological characterization of the subsurface will be emphasized. The format will be relaxed, and attendees are encouraged to ask questions!

LAST SESSION OF MEMBER RECRUITMENT

GEOLOGICAL & GEOPHYSICAL SURVEY – FIELD CAMP 2011

Geophysics UI students are studying both Geology and Physics in order to understand Geophysics itself, which has some survey methods as tools in exploring the objects. Principles theory of those survey methods has been given in campus as credits, but studying without practicing those methods seems useless. Major of Exploration Geophysics, Department of Physics UI, realize that practicing those survey methods are necessary, so this practice activity comes in 2 different subjects in different times too. First subject given to junior student (3rd year students) and survey did inside campus’ forest (UI) area as introduction. But, the second subject given to senior student (4th year students) and survey will did in the real survey area, in this case: Mount Pancar, Bogor – West Java. This second subject names Geological and Geophysical Survey – Field Camp for 2 credits. Although it is a lecture activity, but UISC AAPG feels honored could supporting this activity.

 Geophysical survey methods are consists of: Seismic Methods (Reflection & Refraction), Gravity Method, Geomagnetic Method, Geoelectric & EM Methods (Resistivity, MT, IP, & SP), GPR Method, and Radioactive Method. This activity plans to do 3 geophysical methods, those are: Gravity Method, Geomagnetic Method, and Resistivity Method. Las but not least, we are also planning to do Geological survey, because we could not do any clear interpretation before understanding its geological setting so that we could get the brighter view about what lies below and on the surface.  We all know that Seismic Methods are the most familiar survey in Oil and Gas exploration because of its accuracy and depth penetration, but these methods are relatively expensive. This is why Seismic Methods are impossibly taken in preliminary survey. Alternatively, we are using Geological Survey, Gravity Methods, and Geomagnetic Methods in preliminary survey, while Resistivity Methods usually used in special cased i.e. “Basement Fractured”. So, these methods are still necessary and interesting to practice to.

As advance survey in Geophysics UI curriculum, UI Geophysical Lecturers has to choose the right place to survey to, and Mount Pancar is one of the right choices. Mount Pancar is one of place that possibly representatives geothermal system and available to survey on. This hypothesis based on its lithology, which is young Middle – Miocene Andesitic intrusive rocks which possibly could be the mother source. Another consideration is based on the presence of some surface manifestation such as clay alteration, hot pools, and hot spring. The most conspicuous hot springs are Kawah Merah, Kawah Putih, and Kawah Hitam. We will study about this surface manifestation and geological setting by doing simple geological survey without mapping. In order to know what lies below Mount Pancar, we need to do some geophysical survey.

 Gravity, Magnetic and resistivity survey design will continue the previous survey design, to complete the data and  the conceptual model we made will represent the real  geothermal system. Gravity Method is geophysical method which using rocks density as parameter, this survey will held around Mt Pancar, from its slope till summit and gridding  survey design in interval ±200-250m.   Geomagnetic Method is geophysical method which using rocks susceptibility as parameter, this survey will using the same survey design as Gravity Method did. By doing these methods, we possibly predicted the subsurface layer in Mount Pancar, possibly predicted the mother source, and probably could estimating the reservoir of its geothermal system.

While Resistivity Method is geophysical method which using rocks resistivity as parameter, this survey design will different, because will did in some lines between Kawah Merah, Kawah Hitam and Kawah Putih. By doing this method, hopefully we could determine whether those hot springs are related to Mount Pancar or not and knowing the correlation between those surface manifestations.

After doing those surveys, all participants will process those data acquisition until ready to interpret. Hopefully we could map Mount Pancar subsurface structure and estimate its reservoir location.  This activity will be held in 1^st – 4^th December 2011. As many as 26 students will participate in this activity that will be lead by Mr. Yunus Daud  and Mr.Syamsu Rosid as instructor along with his 3 field assistant and under BMKG Operators’ control

COMPANY VISIT TO PERTAMINA GEOTHERMAL ENERGY, KAMOJANG

SEISMIC OPERATION & DRILLING WELL AT PERTAMINA EP, SUBANG, WEST JAVA