Oleh: Sugiri Umar Khiram;Alexis Badai SamudrA;Agung Budianto

Abstraksi : Biogenic gas has become an economic target of exploration and exploitation, due to the high demand for gas. Its geological occurrence is easily interpreted; it is significantly widespread and shallow; gas is good quality with >97% content of CH4, low S and CO2 content. Production tests from this ...

Oleh: Armi Susandi;Erizal Djamal;Irsal Las;Mamad Tamamadin;Elza Surmaini

Abstraksi : One of the essential problem in this research is the difficulty of prediction skill to analyze the recent characteristics of weather and climate. This condition is estimated due to impact of climate change that affect to change in variation of rainfall. However, along with the development of ...

Oleh: Dimas Pramudito;Julianta Parlindungan Panjaitan

Abstraksi : Pertamina EP Java Region plans to complete several deviated wells in the Rengasdengklok field, onshore West Java to set casing on top of Mid Main Carbonate (MMC) formation. Pertamina EP faced a challenge when drilling into relatively low pressure carbonate reservoir in Rengasdengklok field. One of ...

Oleh: Mohamad Ramdhan;Andri Dian Nugraha

Abstraksi : Aceh segment is a part of Sumatran fault system. It is affected by oblique subduction and active Sumatran fault sub segments that are near it. Aceh segment has higher tectonic activity than northern part segment or Seulimeum segment showed by many earthquakes occur in that area. The catalogue must ...

Oleh: S.Ahadi;G.Ibrahim;S.Saroso;K.Yumoto

Abstraksi : The strong earthquakes (Mw > 5) occurred in Sumatra between September until December 2012 have been studied to examine the occurrence of any anomalous ULF emissions. These earthquakes occurred at distance ? 500 km a way from MAGDAS-Sumatra Network are LWA (Liwa), BKL (Bengkulu) and SCN (Sicincin). ...

Oleh: M. H. Sedayo;F. W. Atmaja

Abstraksi : Menentukan sebaran risiko secara spasial merupakan langkah yang krusial dalam perencanaan mitigasi gempabumi. Membuat skenario gempa yang mungkin terjadi merupakan pekerjaan paling awal untuk memodelkan risiko secara spasial. Metode yang paling popular saat ini menyarankan untuk membuat model zona ...

Oleh: Hendar Gunawan;Tatok Yatimantoro

Abstraksi : The main purpose of this research is to investigate characteristic of Ultra Low Frequency (ULF) and Very Low Frequency (VLF) pre-seismic signal based on Horizontal to Vertical Spectral Ratio (HVSR). In this method, we analyzed waveforms of pre-seismic, coseismic, and post-seismic. Then we compared ...

Oleh: Hendro Nugroho;Sri Widiyantoro;Andri Dian Nugraha

Abstraksi : Determination of earthquake hypocenter in Indonesia conducted by Meteorological, Climatological, and Geophysical Agency (MCGA) has still used a 1-D seismic velocity model. In this research, we have applied a Fast Grid Search Method and a 3-D velocity model resulting from tomographic imaging to ...

Oleh: Ruben Damanik;Fiza Wira Atmaja;Andriansyah

Abstraksi : The tectonic context of the Indonesian region is responsible for a high frequency of earthquakes. When earthquake strikes, particularly in a mega city located in a developing country, the loss becomes greater due to high density, yet poor quality of infrastructures and buildings. Therefore, local ...

Oleh: Dicky Muslim;Ueshima Masaaki;Shibayama Motohiko

Abstraksi : The Weh Island is located in the northern most part off Aceh Province of Sumatera Island. The geomorphological configuration of this island is characterized by elongated cliff and valley, which senses the continuation of Great Sumatera Fault system from the mainland. This fault system has NW-SE ...

Oleh: Hasanuddin Z. Abidin;Heri Andreas;Irwan Gumilar;J.J. Brinkman

Abstraksi : Land subsidence is a silent hazard affecting Jakarta. In general, based on the Leveling, GPS surveys, and InSAR surveys, conducted since 1982 up to 2011, it is obtained that land subsidence in Jakarta exhibits spatial and temporal variations, with the rates of about 1 to 15 cm/year, and a few ...

Oleh: Hengki Eko Putra;Tri Wahyu Hadi;Ediriawan;M. Rais Abdillah;M. Haikal Sedayo

Abstraksi : The impact of catastrophe risk can be reduced through a good risk mitigation management. It must be done all the time since pre-disaster until after disaster period. Regarding to the complexity of parameters of flood risk, the flood risk map that produced before the flood occurs must be completed ...

Oleh: Adi Gunawan;Diponegoro Ariwibowo;Angga unggul Permana;Wahyu Cahyo Romadhan;Ikhsansyah Putra Pratama

Abstraksi : Samarinda is the largest city in East Kalimantan and in Kalimantan. The population of samarinda is more than 1 million people. But samarinda city flooding problems has not yet to be minimized or prevented, the flooding problems was interfered with the activities of citizens, like people who work ...

Oleh: Noor C.D Aryanto;E. Suparka;C.I Abdullah;H. Permana

Abstraksi : This research aims to identify and study about the characteristics of petrology based on geochemical analysis of granitoid rocks that willbe known its petrogenesis. Granitoid Singkawang composed of granodiorite and alkali granite. Administratively, study area into the Singkawang region, West ...

Oleh: Dian Larasati;Eddy A. Subroto;Hendra Niko Saputra;Beiruny Syam

Abstraksi : Jabung Block, Jambi Sub-Basin, South Sumatra Basin is a part of PetroChina International Jabung, Ltd. Operation area, located at 103000’-104000’E and 103’-1017’S. Geochemical analyses give information needed in determining richness, type, and maturity of source rock. In this research, ...

Oleh: Ediar Usman;Adjat Sudradjat;Emmy R. Suparka;Ildrem Syafri;Dicky Muslim

Abstraksi : Studi geokimia pada granit di Bangka sebagai batuan beku dalam (plutonic rock) sebagai batuan induk sedimen Terssier dan Kuarter merupakan batuan indeks untuk menentukan daerah sedimen kuarsa yang berpotensi sebagai reservaoir hidrokarbon dan timah di wilayah perairan Kawasan Barat Indonesia (KBI). ...

Oleh: Miftah Mazied;Iwan Rudiyanto;Budi Prasetyo;Tran Nam Thang

Abstraksi : This paper describes a forensic investigation on six wildcat wells drilled in the Randugunting Block, North East Java Basin in order to determine why the wells failed to discover commerical hydrocarbon, learn from those failures and to apply that knowledge for the success of the subsequent wells. ...

Oleh: Ardi Yoga Pradana;Moh Imron;Irma Kuswinda;Benyamin Sapiie

Abstraksi : Jambi Merang Block is located within the northern edge of Jambi sub basin of the greater South Sumatra Basin. The block is bounded by Ketaling deep in the north-west and Merang Deep to the south- east . To the east the block is bounded by a basement high known as a SembilangHigh.The Jambi Merang ...

Oleh: Dian Larasati;Eddy A. Subroto;Hendra Niko Saputra;Beiruny Syam

Abstraksi : Geochemical analyses give information needed in determining richness, type, and maturity of source rock. In this research, geochemical data samples that represented some lithological beds, such as Gumai, Upper Talang Akar, and Lower Talang Akar Formation are analyzed from 4 wells in a case study ...

Oleh: Rochmad;Ahmad Soulisa;Andini Wuriastuti M;Sony Cahyono;Theodorus Duma

Abstraksi : One of many problems faced by the Indonesian oil and gas industry these days is the decreasing of oil and gas reserves. The addition of oil and gas reserves through EOR projects or finding new exploration often encounter difficulties, especially in terms of the lengthy time required for preparation ...

Oleh: Galih W. Agusetiawan;Asep H Rustam;Ronald H Pardede

Abstraksi : The Inventory of prosperous oil and gas resources in Indonesia was placed in emphasis for better manage the sustainability of Indonesia future supply of energy. Suitable strategy for estimating the potential hydrocarbon supply from exploration speculative resources through reserves supply is ...

Oleh: Meli HAdiana;Benyamin Sapiie;Agus Handoyo Harsolumakso

Abstraksi : Pull-apart basin geometry in three dimensions has been widely known, but the evolution and kinematics of its formation is very difficult to understand well. That is because the formation is controlled by the condition of the basement so often the area becomes very complex. However, in many cases is ...

Oleh: Kwartono;Neni Herawati;Sugiyanto;Anies Baasir

Abstraksi : The uncertainty is exist from subsurface to surface facililties, effecting a large element of decisions making. These uncertainties, without exception, exists across the workflow within all the process of Senoro field development plan. This paper is focus on describing the uncertainty in the 3-D ...

Oleh: Erawati Fitriyani Adji;Febrian Asrul;M. Aidil Arham;Bayu Wisnubroto

Abstraksi : The carbonate on Fika field has a special character because it grew above basement high with thickness and internal character variation. To develop the field, a proper geological model which can be used in reservoir simulation was needed. This model has to represent the complexity of the rock type ...

Oleh: Didi S. Agustawijaya

Abstraksi : mud eruption hazard that considers deeply the influence of deformation due to ground subsidence. The method has employed a rating system in order to simpliply the quantification of parameters involved in risk analysis. For the case of the Lusi mud eruption in Sidoarjo of East Java, ground ...

Oleh: Ulva Ria Irfan;Kaharuddin, MS;Dadang A. Suriamiharja;Irzal Nur

Abstraksi : From the western to southern part of Pangkajene area, a number of rising topography are shown on plain morphology in the Walanae Depression. This topography anomaly in the surrouding plain morphology which composed of volcanic products is interpreted as lava domes. This study aims to identify ...

Oleh: Bob Yuris Chandra;A.T. Rahardjo;Dardji Noeradi

Abstraksi : This paper presents new information on the sequence stratigraphy of the Bayah Formation in Bayah Area of Banten Province, based on palynological and palynofacies data from core of DDH-1 (242m) and DDH-2 (315m). The samples were taken on a systematic sampling of 5 meter interval. There were 47 ...

Oleh: Ronald Siregar;Radig Wisnu Y;Afrizon Setiawan;Hendarman

Abstraksi : Pore Pressure Prediction is crucial to prepare a safe drilling program especially if there the well will potentially intersect shallow gas zones. It influences casing design, drilling mud weight and mitigation of overpressure as a drilling hazard. In the Bentu Block, Central Sumatra Basin several ...

Oleh: Asep Saepuloh;Minoru Urai;Suryantini;Prihadi Sumintadireja;Irwan Meilano;, Agus H. Harsolumakso

Abstraksi : The linear features density related to geological structures is a key to predict the fluid paths of a geothermal system. Manual tracing of the linear features is efficient but not effective because of time consuming especially for wide area with various Geomorphologic and Structural Features (GSF). ...

Oleh: Akhmad Fanani Akbar;Andri Dian Nugraha;M. Rachmat Sule;Aditya Abdurrahman Juanda

Abstraksi : Hypocenter determination of micro-earthquakes of Mount “X-1” geothermal field has been conducted by an employing geiger, simulated annealing and guided error search method using a 1D seismic velocity model. Geiger’s method using iterative least square to determine hypocenter loation with ...

Oleh: Fourier Dzar Eljabbar Latief1;Selly Feranie;Umar Fauzi

Abstraksi : Crack-type pore space in geothermal reservoir rock are considered very important because of its ability to transport water vapor. Two-dimensional characterizations of cracks have been developed in the past. In the recent years, vast development of imaging technique has pushed researchers to obtain ...

Oleh: Widya Utama;M Taufik;Melisa AM;Tri Martha K;Istiqomah AK

Abstraksi : Region of Mount Ijen, Blawan, Bondowoso had quite large geothermal potential. In geothermal exploration and exploitation activity were greatly impact on the environment because geothermal location is in production forest, protected forest and forest conservation area. Therefore, it needed the ...

Oleh: Septa Erik Prabawa;Muhammad Taufik;Widya Utama;Putu Gde Ariastita;Belinda Ulfa Aulia

Abstraksi : Geothermal power plant (PLTP) development is an effort to fulfill the energy needs of the region. Development of this power plant is based on effectivity and sustainability energy supply for the local demand. The existence of geothermal power plant gives opportunity as well as threat for regional ...

Oleh: Bagus Endar B. Nurhandoko;Rizal Kurniadi;Mahatman Listyo Budi;Sasangka Ardi;Insan Rizal;Danang Kusharyo

Abstraksi : Thermal condition is the most important parameter in controlling the source rock maturation. Moreover, it also has an extremely significant effect on hydrocarbon charging as one factor of geological risk assessment in petroleum exploration evaluation to estimate the probability of discovery prior ...

Oleh: Kusnadi;Aris Dwi Nugroho;Heryadi Rachmat;Yukni Arifianti

Abstraksi : Geopark is a territory encompassing one or more sites of scientific importance, not only geological reasons but also by virtue of its archeological, ecological or cultural value. Rinjani ,after Kerinci, is the second highest active volcano in Indonesia with an altitude of 3725 meters above sea ...

Oleh: Igan S. Sutawidjaja

Abstraksi : The young stratovolcano of Batur has erupted at least 24 times since the 1800's, generally with strombolian eruptions and lava flows. The last eruption in July, 2000, erupted basaltic andesite lapilli and lava flow. A large eruption occurred on September 5th, 1963 to May 10th, 1964, mostly lava ...

Oleh: Yukni Arifianti;Kusnadi;Jewgenij Torizin;Michael Fuchs

Abstraksi : The term Geo-Factor Maps stands for a stack of parameter layers containing the input parameters for the statistical approach. The following approved bivariate statistical models can be used: “Information Value”, “Frequency (Probability) Ratio”,”Weight of Evidence”. Each of these ...

Oleh: Herry Purnomo;Nana Rukmana;Jhonatan Tarigan

Abstraksi : The purpose of this mapping is to create a map of Landslide Disaster Prone Zone Karo Regency, and Pak Pak Bharat Dairi, North Sumatra Province The objective: the map is expected to be used as a baseline to inform the planning and development of the area. Mapping location area covers of Karo, Dairi ...

Oleh: Nazli Ismail;Marwan;Faisal Abdullah

Abstraksi : Landslide is a kind of disasters that frequently occurred in Indonesia, as well as in Aceh. During this decade, for example, landslide have killed hundreds of people and destroyed many infrastructures in Indonesia. Therefore, in order to mitigate the disaster and reduced it risks, a deep study on ...

Oleh: A. M. Imran;Busthan Azikin;Sultan

Abstraksi : The study area lies on the north-east slope of Lompobattang Mountian. Due to unstabil landslide often occurs both in small and large scale, especially in the rainy season. Morphology consists of steep slope mountaneous area with lithology of young volcanics. It was applied detail geological surface ...

Oleh: Yunara Dasa Triana;Imam A. Sadisun;Sumaryono

Abstraksi : Landslides are frequent geological disasters in Indonesia. Landslides which evolve into debris flow generally has the effect of considerable destructive. One of the landslides that evolve into debris flow and cause great distress, have occurred in Dewata Tea Plantation, Pasirjambu District, Bandung ...

Oleh: Kresna Tri Dewi;Yusuf Adam Priohandono;Adi Sinaga and Nazar Nurdin

Abstraksi : Bangka Island is a famous tin island that lies in the eastern of Sumatera. The tin has been mined both on land and from paleo-valleys under the sea by dredging or hydraulic methods. This near shore tin activity indirectly may reflect their environments including marine organisms, such as ...

Oleh: Satriya Alrizki;Rusiana Permana

Abstraksi : Induced polarization and magnetic surveys were completed across Gunung Bujang project in the Batang Asai, Jambi Province by Departement Geophysics and Geodesy of PT ANTAM (persero) Tbk Unit Geomin. Mineralization along these project areas indicate as both high sulphidation epitermal (Fe-oxide) and ...

Oleh: Aditya Wira Perdana;Okki Verdiansyah;Agus Pajrin Jaman;Prayatna Bangun;Ferry Haryanto Mongula

Abstraksi : Detailed exploration of gold minerals in the area Cijulang, Garut, West Java, has been initiated by the Strait of resources (joint-venture Antam) in 1998, and followed by PT. Antam Tbk in 2011, with Integrated Geophysics, such as IP groundmagnetic, and gravity, ain 2012 with the purpose to identify ...

Oleh: Doli Rizky Panggabean;Lucas Donny Setijadji;I Wayan Warmada

Abstraksi : In Indonesia, the Mesozoic Granitic rocks are found in Sumatera, Kalimantan, Bangka and Belitung islands. In Bangka and Belitung islands the presence of granitic rock are proven to be associated with economic mineral deposits especially cassiterite in main body granite and also as placer deposit ...

Oleh: Rusiana Permana;Erric Sukmawan;Yosafat P. Simanjuntak;Sufian Nur Hikmat;David Iswanto;Bronto Sutopo

Abstraksi : Batulicin porphyry and Bujang prospect are located in Batangasai district of Sarolangun region, Jambi province, Indonesia. Batulicin geology consist of volcanic and intrusive rocks. Volcanic andesite, tuff, accretionary lapilli, crystal tuff, dacite porphyry, polymict and monomict breccia. There ...

Oleh: Ruri Pitaloka;Agata Vanessa;Okki Verdiansyah

Abstraksi : The Ok Sibil area, is located in The Papuan Fold Thrust Belt, which known as corridor for porphyry and skarn deposits. Mineralization in this area is formed due to magmatic activities produce metamorphism and metasomatism between tertiary limestone (Yawee formation) which is intruded by Pliocene ...

Oleh: Tubagus Fatwa;Gunawan Setiono;Supriyanto;Aditya Wira Perdana;Okki Verdiansyah;Agus Pajrin

Abstraksi : Java as a magmatic arc lines have the potential formation of metallic minerals in the depositional environment underground, especially in the prospect area "B" region of West Java. The main difficulty factor in exploration prospect area is difficult to detect underground structures. This was due at ...

Oleh: Sutarto;Arifudin Idrus;Sapto Putranto;Agung Harjoko;Lucas Donny;Setiadji, Michael Meyer

Abstraksi : The alteration zone at the Randu Kuning area and its vicinity can be divided into several zones of hydrothermal alteration, such as the potassic zone (magnetite-biotite-K feldspar), prophyllitic zone (chloritemagnetite-epidote-carbonate), phyllic zone (quartz-sericitechlorite) and argillic zones ...

Oleh: Eko Januari Wahyudi;Djoko Santoso;Wawan Gunawan A. Kadir;Susanti Alawiyah

Abstraksi : As promising contribution of soft computation technique in oil and gas industry, Simulated Annealing becomes optimization tool to provide alternative results and efficiency in computational process. In this paper, we would like to show the progress of my work in inverse modeling of time-lapse ...

Oleh: Setya Drana Harry Putra;Darharta Dahrin

Abstraksi : The spatial characteristics of surface gravity and magnetic measurement values can influence our preliminary considerations before modeling. It is necessary to perform spatial analysis to determine the distribution and spatial characteristics of these anomalies, and choose the most optimum ...

Oleh: Ganjar Sulastomo;Elwin Elbur;Rizki Trimanda

Abstraksi : Epithermal Low-Sulfidation is one of the gold mineralization types which is formed by magmatic fluid transported through geological structure, such as fault and fracture, and then with the proper condition gold will be formed. Gravity method is applied to describe areas that has structural ...

Oleh: Aryadi Nurfalaq;Alfian Nawir;Adi Tonggiroh;La Ode Nasrun

Abstraksi : A study variation of magnetization using geomagnet in coastal Tamarunang Jeneponto. The data acquisition process from the field using a magnetometer and Global Positioning System (GPS) for pointing position of the measuring area. This study aims to determine the magnetic variation of the material ...

Oleh: Fourier Dzar Eljabbar Latief;Umar Fauzi

Abstraksi : Modeling of sedimentary rock has been developed in recent years by many researchers using various methods. Some of the well-known methods are Gaussian Field model, Simulated Annealing model, and Continuum Geometrical model. In this research, we developed two methods of modeling the sedimentary ...

Oleh: Agus Setyawan;Hernowo Danusaputro;Yoichi Fukuda;Takahito Kazama;Jun Nishijima;Dedi Yusmen

Abstraksi : Establishing a new method to monitor the environmental issues such as groundwater variation, landsubsidence, by means of absolute gravity measurements, a field type absolute gravity meter, Micro-G LaCoste Inc. A10 has been observed in Bandung Area colaborate between Kyoto University, Kyushu ...

Oleh: La Hamimu;Jamhir Safani;La Ode Ngkoimani;Mohd Nawawi Mohd Nordin

Abstraksi : The inverse procedure of vertical electrical sounding (VES) data is a complicated problem for linear inversion approach because the apparent resistivity data measured on the surface as a function of electrode separation bear a non linear relationship to the earth model parameters, i.e., the ...

Oleh: Eddy Z Gaffar

Abstraksi : Pelabuhan Ratu area located on the south coast of West Java. With the Indonesian Government Regulation No. 66 of 1998 transferred the capital of the district of Sukabumi to Pelabuhan Ratu with such development and population growth will be faster in this area. Results of population census in 2010, ...

Oleh: Bryan Whildan Arsaha;Darharta Dahrin

Abstraksi : Gauss’s Law provide a way to estimate the total mass of subsurface because the method only uses the calculation of the gravity data set alone, without needing to know the dimensions or other physical parameters of subsurface anomaly. In this research, we do data processing of time lapse gravity ...

Oleh: Hendra Grandis;Prihadi Sumintadiredja

Abstraksi : Controlled-Source Audio-frequency Magnetotellurics or CSAMT typically employs a grounded dipole source in the range 1 Hz to 10 kHz. Most CSAMT data are still processed using the so-called near-field correction in order to apply MT modeling, especially in 1D. In this paper, we describe the ...

Oleh: Arief Rahman;Lambertus Fransisco;Wahyudi

Abstraksi : Selong and Akatara Prospects that divided by faults are located at Lemang Exploration block, Jambi sub-basin, South Sumatera Basin adjacent to Jabung Block. 2D seismic data and several existing exploration wells become the main data for geological interpretation. The application of the Passive ...

Oleh: Muhammad Fadhillah Akbar;Afnimar;Andri Dian Nugraha;Dimmas Ramadhan;Guntur Mulyanagara

Abstraksi : Passive seismic data acquired at different fields above proven hydrocarbon reservoir shows characteristic spectral anomaly at low frequency approximately between 1–6 Hz. This spectral anomaly is called hydrocarbon microtremor (HM) signal. This nature of spectral anomaly is developed and have ...

Oleh: Andika Perbawa;Danar Yudhatama;M. Aidil Arham;PT. Medco E&P Indonesia

Abstraksi : Passive seismic survey is a geophysical method that utilizes a spectral frequency from seismicity data to identify subsurface reservoir fluids. Rock pores that contain hydrocarbon fluids show higher low-frequency amplitude between 2-4 Hz compared with those that contain water. This paper shows the ...

Oleh: Z. Irayani;U. Fauzi;S. Viridi;B. Priadi

Abstraksi : Rock permeability measurements are generally conducted on core samples in centi-meters scale. Normally, the permeability can only be measured in one direction. Anisotropy of permeability can be obtained by measuring permeability of the other direction from different core samples. Using digital ...

Oleh: Bagus Endar B. Nurhandoko;Yoga Hariman;Rizal Kurniadi;Susilowati;Kaswandhi Triyoso;Sri Widowati

Abstraksi : Stratigraphic traps are produced when the seal or barrier lithology is formed as a result of lateral and vertical variations in the thickness, texture, porosity or impermeable lithology of the reservoir rock during the deposition of the reservoir beds. This lithological variation may be caused by ...

Oleh: Anggoro S. Dradjat

Abstraksi : The main production layer in Oseil field is carbonate fracture in Manusela Formation, East Indonesia. The main storage and accumulation space of the carbonate is fractured porous media and the reservoir distribution possesses has strong heterogeneity. Studied on reservoir fractures intensity in ...

Oleh: Fahdi Maula;Budi Prasetyo;Iwan Rudianto;Irma Eliza;Sanjeev Dogra

Abstraksi : Borehole seismic recording using multi-components geophones, it is possible to obtain more than just compressional (P) wavefield, but also shear (S) wavefield. In general, the wave propagation through stratified medium makes downgoing P-waves that convert on reflection to become upgoing S-waves. ...

Oleh: Khairul Ummah;Randy Condronegoro;Woro Sutjiningsih;Herlan Setiadi

Abstraksi : Hydrocarbon filled thin layer reservoir is commonly found after well-logging. The thickness of thin layer reservoir is beyond seismic resolution, hence a resolution enhancement method usually applied to reveal this potential layer. Some of the methods use bandwidth extension to increase the ...

Oleh: Ida Herawati;Sonny Winardhie;Awali Priyono

Abstraksi : Anisotropy analysis plays important role in seismic data processing. Anisotropy presence if not accounted properly may deteriorate seismic image. In unconventional resources like shale gas and fracture reservoir, knowledge of anisotropy parameter is also needed to help better understand the ...

Oleh: Bagus Endar B. Nurhandoko;Susilowati;Agus Deny;Mahatman Lisyo Budi

Abstraksi : Coal bed methane (CBM) reservoir is one of unconventional hydrocarbon which methane gas saturated in coal layers. CBM exploration as well as exploitation is still new in Indonesia. Exploration of CBM in Indonesia almost relies on well information instead of seismic. It is due to lack of knowledge ...

Oleh: Ilham Togi Sihombin;Teuku Abdullah Sanny

Abstraksi : Seismic data records are in the time domain, while exploration and exploitation need sub-surface images in the depth domain. In order to convert time domain to depth domain, proper velocity model is required. In this study, the authors made velocity models by using 40 wells which have velocity data ...

Oleh: Andreas Waluyo

Abstraksi : One of the recent developments in prestack seismic imaging is the use of full-waveform inversion (FWI) in velocity model building and updating. FWI computes the difference between synthetic waveforms generated from the current P-wave velocity (Vp) model and the actual recorded (observed) data and ...

Oleh: Khairul Ummah;Dythia Prayudhatama;Sarah Anzaita Putri

Abstraksi : Poor quality of seismic data is a common problem in seismic imaging that result a blurry image. In this paper, we present a combination of two signal reconstruction methods to enhance the signal-to-noise ratio (SNR) of data. We use Common Reflection Surface (CRS) to create a cube of CDP-x (Common ...

Oleh: Taku Okamoto;Muhammad Amin;Agung Prasetyo;Teguh Suroso

Abstraksi : In this paper, the MDRS (Multi-Dip Reflection Surface) results which were applied to the low S/N and poor acquisition specification data acquired in Indonesia are described. MDRS is an advanced stacking method for complex structures based on the CRS (Common Reflection Surface) technology developed ...

Oleh: Amri Widyatmoko;Awali Priyono

Abstraksi : Diffraction occurs when seismic wavefronts hits the subsurface discontinuous smaller than the seismic wavelength. Examples of the discontinuous events, such as faults, pinch outs, salt bondary, fracture and form a small object / local heterogeneous. Although the interpretation of discontinuous ...

Oleh: Joko Wiyono;M. Noor Alamsyah;Krisputranto W. Nugroho;Muhtar;Iqbal Buldani

Abstraksi : Azuni Field is located on South Sumatra Basin was discovered in 2004 and since 2006 this field producing oil from Lower Talang Akar Formation (LTAF). This field also has potential gas reservoir in Gumai Formation (GUF). There are two main potential gas reservoirs in this formation, Sand-11 and ...

Oleh: T. F. Niyartama;U. Fauzi;Fatkhan

Abstraksi : Detailed information about responses of elastic waves that influenced physical properties of reservoir rocks has become an important part in seismic interpretation. Understanding seismic signal changes in poroelastic media are needed in order to know behavior of wave propagation in the ...

Oleh: Mohamad Nur Heriawan;Ongky Elisman;Anton Perdana

Abstraksi : Sampling selection on fan drilling pattern with specific grid (interval) generated a problem regarding the optimum sampling interval. The presence of different data distribution on various places creates spatial data clustering. The objective of this research is to optimize the sampling interval on ...

Oleh: Oki Rizaldi;Dardji Noeradi;Sonny Winardhi

Abstraksi : Total organic carbon (TOC) content in shale layer is one of the important component in the shale gas evaluation. However, the analysis of TOC is usually conducted in the well location only at certain depths. Correlation analysis between TOC and other physical properties are therefore commonly ...

Oleh: Pranowo Nugroho;Gustriyansyah Mishar;Heri Gunawan;Julius Sunarta;Wahyu Seno Aji

Abstraksi : Aryani basal sand is typical porous conglomeratic reservoir sand that interpreted draping above the basement as a part of Lower Zelda member, Talang Akar formation. The discovery of Basal sand reservoir was identified from Aryani-X exploration well, drilled on 1989 encountered around from 10 – 16 ...

Oleh: Dodi Galih;Armein Hazet;Fajar Nur Rachmanto;Yarra Sutadiwiria;Asep Hendriana Rustam

Abstraksi : This paper presents the results of analysis and evaluation of several problems that arise due to Oil and Gas Production Sharing Contract (PSC) extension proposals. Government's decision on the proposed extension should at least consider the performance of the operator in managing working area, ...

Oleh: Subagyo;Bhaskara Aji

Abstraksi : Currently, the daily oil production has been decreasing from 2000 to 2012. Oil and condensate production is decreasing 4% each year, meanwhile the gas production increases 3% each year. because of the decreasing in oil and condensate production significantly, it needs an appropriate effort to ...

Oleh: Novarini Nastiti;Anggoro S. Dradjat

Abstraksi : Seram Island is situated in the northern rim of the Banda arc. The area is tectonically and geologically complex where the Australian and Asian plates obliquely collide. The main reservoir target is the carbonate fractured reservoir Jurassic of Manusela formation. Imaging and resolution of the Top ...

Oleh: Afnimar;Rasmid;Eko Yulianto

Abstraksi : The Lembang fault where located at northern edge of Bandung basin is one of interesting object because it is so terrible if a faulting is occurred and many people are killed. In this research, we will investigate the activity of this fault. The first seismic investigation around Lembang fault has ...

Oleh: Ariesty Asikin;Awali Priyono;M. Rachmat Sule;Benyamin Sapiie

Abstraksi : Seismic AI inversion was conducted from the dataset obtained from Gundih and its northern area, Central Java, Indonesia. The target of this investigation is to determine the best CO2 storage for planned CO2 injection that will be carried out around mid 2015. This project will utilize the CO2 ...

Oleh: A.Soehaimi;Kamawan;J.B Setiawa;Dicky Muslim

Abstraksi : Earthquake potential in Central Sulawesi thematically mapped in Active Fault Map of Central Sulawesi (scale 1: 500,000), Seismotectonic Map of Palu, Poso and Ampana (scale 1: 150,000) and Potential Earthquake Disaster Microzonation Map of Palu City (scale 1 : 50,000). Active Fault Map of ...

Oleh: Adjat Sudradjat;Muhammad Altin Massinai;Nana Sulaksana;Dicky Muslim;Emi Sukiyah

Abstraksi : Jeneberang watershed is located in the southern part of Sulawesi’s south arm. It covers the regencies of Gowa, Takalar, Maros and the city of Makassar. Jeneberang River has caused acute floodings in the coastal plain of Makassar. The flood is not merely due to the water debit but mostly related ...

Oleh: Purnama Ary Suandhi;Andang Bachtiar;P.L Marpaung;Z. Azzaino;Y.S. Purnama;A. Krisyunianto

Abstraksi : The Rokan Estuary in Riau, Central Sumatra, is a funnel shaped, shallow estuary and dominated by tidal mudflat. This paper discusses sedimentation characters of modern tropical estuary which is controlled by active tectonic. Methods used in this study is field observation consist of shallow ...

Oleh: Fahruddin;Sri Widiyantoro;Afnimar;Andri Dian Nugraha

Abstraksi : Pada penelitian ini akan dilakukan identifikasi diskontinuitas mantel Bumi pada kedalaman 410 km, 660 km dan 920 km di bawah Kalimantan dengan memanfaatkan data prekursor gelombang seismik SS. Data yang digunakan adalah data gempa yang berpusat di sekitar Tonga, Fiji sampai Selandia Baru dan ...

Oleh: Awang H. Satyana;Ridwan Hutagalung;Ummy Latifah

Abstraksi : Danau Toba adalah sebuah kaldera gunungapi yang kejadiannya berhubungan dengan gejala tektonik dan volkanik (van Bemmelen, 1949). Diketahui kemudian bahwa Danau Toba adalah kaldera yang terangkat kembali (resurgent cauldron) terbesar di dunia. Setelah sebuah letusan sangat besar (megakolosal) ...

Oleh: Astyka Pamumpuni;Benyamin Sapiie

Abstraksi : Sorong-Yapen fault system is one of the major strike slip fault system which located at the Bird?s Head Region in Papua Indonesia also known as New Guinea Island. Since 10 Ma, Sorong Yapen Fault system shows evidence of total displacement ~1000 km based on regional correlation. The recent ...

Oleh: Rino;Irwan Meilano;Hasanuddin Z. Abidin;Susilo;Dina A. Sarsito;Sri Hidayati

Abstraksi : Bali island is part of east Sunda Shelf. Based on earthquake historical record, most of earthquakes occurred in this area are associated with tectonics activity in the subduction zone and backthrust in the north-east Bali. Our GPS continuous and campaign data analysis showed that tectonic stress in ...

Oleh: Andri Dian Nugraha;Artadi Pria Sakti;Sri Widiyantoro;Irwan Meilano

Abstraksi : We used P-wave arrival times of local earthquakes from the SeisComp-MCGA (from 2009 to 2011) and MCGA BALAI II (from 1992 to 2011) data catalogs around West Java and Sunda Strait regions to invert for P-wave velocity (Vp) crustal structure and hypocenter adjustment simultaneously. The data catalog ...

Oleh: Mia Uswatun Hasanah;Andri Dian Nugraha;Rachmat Sule

Abstraksi : Subsurface structure could be defined by physical parameters such as seismic velocity and seismic attenuation (1/Q). In seismic tomography studies, the amplitude and travel time of P-waves and S-waves have been used to image the subsurface structure. Q-tomographic is imaging of variation ...

Oleh: Bayu Pranata;Erdinc Saygin;Phil R. Cummins;Sri Widiyantoro;Andri Dian Nugraha;Prih Harjadi

Abstraksi : In this study, we extracted Green's function from ambient seismic noise data in order to image the shallow subsurface structure beneath Jakarta. The waveform cross-correlation technique has been applied to 31 days of recordings of ambient seismic noise at 36 seismographic stations around the DKI ...

Oleh: Dewi Rahmalia;Bagus Priyanto

Abstraksi : In Indonesia, the shale gas resource is still being assessed. The Head of Geological Agency for Energy and Mineral Resources Ministry, R. Sukhyar, in September 2011, estimated the Indonesian shale gas resource to reach 570 trillion cubic feet (tcf) based on their latest studies (Petromindo, 2011). ...

Oleh: Resky Yustiawan;Bayu Adhi Pramudhita;Ambaria Prakoso;Yuki A. Nagarani;Hotma Yusuf

Abstraksi : Pematang brown shale proven as source rock in Malaca Strait. It has been encountered in South Bengkalis basin that has been producing hydrocarbon up until now, and Rangsang basin is defined as early mature basin. North Bengkalis and North Padang that has been interpreted as mature basin which not ...

Oleh: David Ontosar;Fanny Rosdiawan;Pande Made;Alfi Rusin

Abstraksi : Coal net to gross (CNTG) is an important parameter in the modeling on Coal Bed Methane (CBM) geological work. CNTG describes the ratio of the thickness of the coal seams to the thickness of the coal facies or formation. This paper describe CNTG in a CBM block in South Sumatra Basin. CNTG calculated ...

Oleh: Rizky Nur Hakim;Bambang Irawan;Roy Widiartha;Brahmantyo Krisnahadi Gunawan;Wiarto Putro;Caecilia Damayanti

Abstraksi : Based on data from Dirjen Migas , Indonesia has about 453 TCF of OGIP of Coal Bed Methane (CBM) resources from 11 basins that spread out from Sumatera to Kalimantan. In Sumatera, the South Sumatera basin has the highest potential resources of 183 TCF OGIP, while in East Kalimantan, the Kutai Basin ...

Oleh: Waskito Pranowo;Ignatius Sonny Winardhi

Abstraksi : The exploration for unconventional reservoirs is growing rapidly in recent years, especially in Indonesia. One of these reservoirs is Coal Bed Methane (CBM). However, only a few publications on physical properties of CBM is found. Rock physics model for CBM is discussed in this paper using dry coal ...

Oleh: Bagus Endar B. Nurhandoko

Abstraksi : Shale gas is natural gas formed being trapped within shale formations. Five integrated strategies are proposed for better shale gas characterization: prediction of total organic carbon, prediction thermogenic gas window, fractured zone characterization, mapping ‘rigidity’ of shale, and natural ...

Oleh: T.A. Sanny;Subandrio A.

Abstraksi : Coal Bed Methane (CBM) becomes an important alternative energy for the future. So, identifying reservoir rock types, microstructures and their characteristic are an essential component of reservoir characterization. To search a better understanding of the CBM charateristic, we propose a new ...

Oleh: Muhammad Saladin Islami;Ignatius Sonny Winardhi

Abstraksi : Unconventional resources such as shale gas have been an important exploration and production target for several years. However, seismic characterization of shale gas reservoirs remains challenging due to limited understanding of seismic responses to shale-gas reservoir properties, such as ...

Oleh: J. P. Metaxian;S. Surono;F. Beauducel;C. Martel;K. Kelfoun;P. Lesage

Abstraksi : On andesitic volcanoes, magma reaches the surface as lava flows, domes that may destabilize gravitationally or explosively to form pyroclastic flows that travel many kilometers along the flanks of the volcano or via vertical explosive columns of fragmented magma. These different eruptive styles ...

Oleh: Novianti Indrastuti;M. Hendrasto;Hetty Triastuty;Andri Dian Nugraha

Abstraksi : Sinabung Volcano is located in Karo Regency, North Sumatera. Geographically, the summit lies at 03° 10’ North, 98° 23.5’ East and height of 2460 m.asl. A series of eruption occurred from August 27, 2010 till September 7, 2010. Before this eruption, Sinabung Volcano was B-type volcano, which ...

Oleh: Widiastuti Nur Farida;F F Dheswara Adji Maryadi;Dwi Puji Lestari;Yoshi Wiweka Praba Pudyastawa;Osa Irda Insani

Abstraksi : Kendal, which is one of many regencies located in Central Java, has four major sectors of its income. The four main sectors that contributed towards PDRB of Kendal are agricultural sector 26,14%, processing industry 33,84%, trading and tourism 16,94%, and other services 10,29% (based on: PDRB ...

Oleh: Harya Dwi Nugraha;Rafi Alvin Utama;Eleonora Agustine;Gerald Tamuntuan;Afnimar Picancang;Andri Dian Nugraha

Abstraksi : The proliferation of geophysical methods in agricultural studies has given rise to the term agricultural geophysics. Unlike in delineating rock layers, the effectiveness of such methods in delineating soil layers is still questionable. Moreover, the nature of soils differs from that of ...

Oleh: Tuti Alawiyah;Bagus Endar B. Nurhandoko;Mahatman L. Budi;Susilowati

Abstraksi : Water saturation (Sw) is one of important parameter in estimation of oil and gas reserve. To calculate Sw, some petrophysics approach is based on Archie equation which has three parameters; a, m and n. These parameters have unique values depend on type of reservoir and field. Many references ...

Oleh: Author Alex Candra;Hilmi Lazuardi;Dede Aditya Aprizal;Fajar Ramadhan;Ahmad Alam Faisal Hasibuan

Abstraksi : CBM consists of 90% - 95% CH trapped in coal. Indonesia has enough reserves particularly in Sumatra and Kalimantan with high prospective category located in South Sumatra basin (183 TCF), Barito (101.6 TCF), Kutai (89.4 TCF), and Central Sumatra (52.5 TCF) (Permana.,2007). Thus the government's ...

Oleh: Christiana Kartika Sidauruk;Elrey Fernando Butarbutar

Abstraksi : Toba Lake is the biggest lake in the world which formed from the super volcanic eruption on Late Pleistocene, 73,500 years ago. This lake is located in North Sumatra Province, ranges between latitude 2°35' - 2°58' and longitude 98°50’ - 98°83’. Based on stratigraphic study and ...

Oleh: Bhaskara Aji;Prihatin Tri Setyobudi;Rizqi Syawal;Aveliansyah

Abstraksi : Ngrayong Sandstones member of Middle Miocene Tawun Formation, is one of the main reservoir in the North East Java Basin. Currently depositional environment of Ngrayong Member is still being debated, because in Cepu area and surrounding sediments with relatively similar characteristics can be ...

Oleh: Eko Prasetyo;Dedi Ariyono

Abstraksi : Nowadays, oil and gas reserves have started thinning while needs of society of energy continue to grow. To satisfy these needs, development in exploration sector must be done like technology development and subsurface data acqusition. Sequence stratigraphy became one of study that could help for ...

Oleh: Prihatin Tri Setyobudi;Purnama Ary Suandhi;Andang Bachtiar;Achmad Miri

Abstraksi : Kutai Basin is Tertiary basin which is the largest coal producers in Indonesia. Basic sedimentology knowledge, regional geology controlled and modern environment analogue are needed to support coal exploration activity specially coal seams correlation framework in the fluvial – deltaic ...

Oleh: Garda Erlangga;Kahvi Afafa;Yan Fahmi Swastiraras

Abstraksi : A research about manganese exploration using induced polarization method in Kliripan and Anjir Subvillage, Kulon Progo Regency, had been done in Geophysics Expedition, May 18th-20th, 2012. This research used Syscal Jr. with 10 and 20 meter electrode spacing and n=6. The data was processed with ...

Oleh: Fahmi Hakim;Arifudin Idrus;Indra Sanjaya

Abstraksi : The research area is located in Pelepat area, Muara Bungo regency, Jambi province. The research area is found by many artisanal and small-scale gold miners (ASGM) are operating in several mainly river in that area. Based on that, researchers wanted to know the types of deposits that produce gold. ...

Oleh: H. Utoyo;Hamdan Z. Abidin

Abstraksi : Research of metallogenic segment of Sumatera covers the area along the western coast of Aceh Province including Aceh Besar, Aceh Jaya, Abdiya and South Aceh Regencies. The aim of this research is to obtain more information about mineralization, hydrothermal alteration, host rocks, source rock and ...

Oleh: Rinaldi Ikhram

Abstraksi : The Rare Earth Element (REE), the name given to the group specifically the fifteen lanthanides which is a transition metal of Group 111B on the periodic table, plus scandium and yttrium due to they tend occur in the same ore deposits as the lanthanides and exhibit similar chemical properties. The ...

Oleh: Wulan Okta Karunia;Desi Vivi Janna Pakpahan;Muhammad Setiaji;Afif Nuraini;Aulia Rahman

Abstraksi : Jingkang Village, Purbalingga, Central Java, is one of the potentially high enough in the mass movement. This is evident from the number of locations that have experienced a shift due to mass movement which resulted in losses. Study was to map and analyze the potential mass movement with mapping ...

Oleh: Hendar Gunawan;Nanang T. Puspito;Gunawan Ibrahim;PJ. Prih Harjadi

Abstraksi : Peak Ground Acceleration (PGA) is very important for seismic hazard assessment and quick response. One of hazard assessment of potential damage from earthquake is to determine the effect or impact type of ground motion at the specific site. Seismic hazard assessment for quick determination has been ...

Oleh: Siska Kumala;Bambang Priadi

Abstraksi : Lampasi Area in Lima-Puluh Koto District (Northern Payakumbuh), West Sumatra Province consists of meta-shale from Kuantan Formation (Carbonaceous to Permian in age) that unconformably overlied by conglomerates of Brani Formation (Eocene in age). Eocene to Early Pleistocene tectonics compressed the ...

Oleh: Mufied Ahmad;Wahyu Triyoso

Abstraksi : This paper presents an alternative way in identifying hydrocarbon presence in the reservoir based on velocity information instead of amplitude information. Hydrocarbon presence, especially gas, has been identified using AVO attributes for many years. Now, Velocity Variation with Offset (VVO) method ...

Oleh: Ahmad Ali Fahmi;Eddy Hartantyo

Abstraksi : In geoelectrical survey using Schlumberger Configuration, also known as Vertical Electrical Sounding (VES), there is a principle of inversion. Inversion is converting the value of apparent resistivity using a transformation function related to layer parameter through algebraical relation to obtain ...

Oleh: Ghufron Fauzi;Warto Utomo;Andang Bachtiar;Armein Suleiman;Budi Satrio

Abstraksi : The subsurface data in the form of well logs for the interval Air Benakat Formation in the study area is composed by lithological variation in the form of sandstone and silisiclastic sandstone vulcaniclastic with repeated its presence, has a fairly complex character log. The presence of volcanic ...

Oleh: Fatkhul Mu’in;Sonny Winardhie

Abstraksi : The main Reservoir in Central X Field is sandstone from Talang Akar Formation. Reservoir thickness varies from 1.5m to 20m. In addition to thin layer under tunning thickness issues also a strong acoustic impedance overlaaps between sand and shale. Geostatistical inversion approach is used to ...

Oleh: Philipus Ronnie Adisatrio;Andri Dian Nugraha

Abstraksi : Seismic refraction survey is one of geophysical method that useful for imaging subsurface of earth structure, especially for imaging near subsurface. One of the common problems in the seismic refraction survey is weak amplitude due to attenuation at far offset. This phenomenon will make it ...

Oleh: Teuku Reiza Yuanda

Abstraksi : Mentawai forearc basin, trench-parallel elongated trends NW-SE, is an area of strong subsidence and serves as traps for sediments derived from the arc region, Sumatra Island. Acquired geoscientific datasets from the German research cruise R/V Sonne SO-184 have afforded more detailed investigation ...

Oleh: Risky Martin Antosia;Kaswandhi Triyoso

Abstraksi : Technology development affects to improvement of seismic data acquisition devices. Common seismic acquisition method is utilizing a lot of roll of cable to transmit the data from sensor to the recording device. Simplified seismic acquisition devices become more important in order to reduce the ...

Oleh: Rieza Rachmat Putra;Izzul Qudsi;Ismawan;Iwan S Gumilar;Rahmat Y Saragih

Abstraksi : Geologi struktur adalah bagian dari ilmu geologi yang mempelajari tentang bentuk atau narsitektur batuan akibat proses deformasi serta menjelaskan proses – proses pembentukannya. Daerah penelitian memiliki kondisi struktur geologi yang kompleks karena merupakan wilayah pertemuan tiga lempeng ...

Oleh: Ary Wahyu Wibowo;Astri Pujianto;Wisnu Hindadari;Dina Novi Susanti

Abstraksi : Ciputat Sub-basin is a north-west half graben within NorthWest Java Basin. Rifting has begun during Late Eocene until Late Oligocene, formed by subduction activities. SynRift in Ciputat Sub-basin divided into two phases (Schlumberger, 1986). Syn-Rift Phase-1 begun with the deposition of the ...

Oleh: Luli Gustiantini;Catherine Kissel;Frank Bassinot;Rina Zuraida;Aurélie Van Toer;Khoiril Anwar Maryunani

Abstraksi : Halmahera sea of Indonesia plays a role in global climatic changes due to its position within the western Pacific warm pool and along the path of the Indonesian through flow. Observing past changes in oceanic dynamic of this area is critical to understand the mechanisms and forcing causing the ...

Oleh: Rachmat Fajar Lubis;Sudaryanto;Robert Delinom;Hendra Bakti

Abstraksi : In Semarang, capital city of Central Java Province, the use of groundwater has greatly accelerated conforming to the rise in its population and the development of industrial sector, which consume a relatively huge amount of water. The increase of groundwater exploitation in these cities ...

Oleh: Anis Kurniasih;Yahdi Zaim

Abstraksi : The human fossil which is known as Ngandong fossils was discovered by von Koenigswald in the 1930's. At the beginning of the discovery, the Ngandong fossil was not as an attractive object to be studied by paleoanthropologist. But from the beginning of the 90's, there was a controversy ...

Oleh: Ali Muhammad Rihannur;Hengki Irawan

Abstraksi : Citatah Karst is a part of limestone from Rajamandala Formation which expose from Padalarang in northern to Saguling in southern and it is part of Bogor Basin. The geological phenomenon such as limestone dissolution intensively, and fossils- artifacts discovered as the evidence of past life ...