Benyamin Sapiie

• Bandung Institute of Technology

Sulawesi is a tectonically active area with convergent triple-junction amidst Eurasian, Indo-Australian and Pacific Plate. The study area is located in the suture zone of sedimentary Banggai-Sula Microcontinent and East Sulawesi Ophiolite. This research is aimed to determine fault activity and rate of tectonic uplift of Luwuk mountainous area. Fiel...

Volcanic arcs such as the Barisan Mountains have been identified as attractive areas for the utilization of geothermal energy, as exemplified by Ulubelu in Lampung and Sarulla in North Sumatra. However, environmental factors in the Barisan Mountains remain a primary obstacle to the exploration and exploitation of geothermal energy. The back-arc bas...

The characteristics of the geological structures controlling the presence of Sukadana basalt on the Earth’s surface are still an enigma. Therefore, this study was conducted to determine the probable types of geological structures and their orientations that could control the occurrence of Sukadana Basalt lava on the Earth’s surface. To seek answers...

Geothermal energy extraction often results in the release of naturally occurring carbon dioxide (CO2) as a byproduct. Research on carbon storage using volcanic rock types other than basalt under both acidic and elevated temperature conditions has been limited so far. Our study uses batch reactor experiments at 100°C to investigate the dissolution o...

Ciujung watershed is located in Banten province, Indonesia. The Ciujung watershed is one of the watersheds that have a significant area coverage, such as Serang, Lebak, and the eastern part of Pandeglang. These areas are developing both in terms of population growth and infrastructure. Therefore, a more in-depth study of the Ciujung watershed, name...

To resolve the formation of the Luk Ulo Mélange in the Karangsambung area of Central Java, the matrix-dominated Jatisamit Mélange, which is a member of the Luk Ulo Mélange, was examined. Outcrop and petrographic observations of sandstone boudins and their shale matrix from the Jatisamit Mélange were used to assess deformational mechanisms and forma...

Research subject. The geological profile of Sukadana Basalt Province as a large basalt outcrop in the back arc of Sumatra remains to be unclear. This also concerns the geological structures and their relationship with the Sundaland regional geology. Aim. To reveal the type and pattern of geological structures that controlled the Sukadana Basalt Pro...

The petrogenesis of Sukadana Basalt remains an enigma till present. Major and trace element data are analyzed from Sukadana Basalt lava, located at East Lampung, Sumatra, to study the processes involved in the petrogenesis of the erupted magmas and the origin of mantle source compositions. The Sukadana Basalt display SiO2 (48.1–52.5 wt%), MgO (5.3–...

The mechanism of the presence of the Sukadana basalt in the back arc of Sumatra is still an enigma, especially since the Sukadana basalt has a wide coverage area in Sumatra Island and even the Sunda Arc. In this study, we used the published research data as the main contributor to an in-depth analysis to determine the mechanism of the presence of S...

Tin have atomic number 50 and atomic mass 118,71, commonly found as cassiterite in nature. It is one of important elements in low carbon technologies. Nowadays, tin utilized in broad application range from tin can to electronics. Despite many uses, tin is only produced from limited areas. Because of broad application, understanding of tin in nature...

A magnitude 5.2 earthquake hit Cianjur Regency, West Java, Indonesia on November 21, 2022, killing more than 300 people, leaving many more missing, and damaging more than 60,000 houses which caused thousands of people to be displaced from their homes. Significant seismic activity was recognized in 1699, 1834, 1879, and 1900 near Cianjur in West Jav...

The study aims to determine fracture characteristics such as orientation, fracture attributes, fracture density distribution, and mineral composition of quartz and feldspar. The study used photogrammetry data to know the distribution and geometry of macro-scale fracture, linear scanline and windows scan data to understand the characteristics of mes...

Resiko geologi adalah resiko yang terjadi akibat terjadinya proses geologi, atau disebut bencana geologi, seperti gempa bumi, longsoran, banjir, dan erupsi gunung api. Bencana ini dapat melanda permukaan bumi dan mengakibatkan efek kerugian yang tidak kecil, mulai dari lingkungan, aktivitas masyarakat di daerah tersebut, maupun dampak terhadap masy...

We analyzed the tectonics and stratigraphy of the Southern Great Tarakan Basin to determine its tectonic evolution during the Mesozoic-Cenozoic Eras, the evolution of basin geometry, and the potential of hydrocarbon using integrated surface and subsurface data. Southern Great Tarakan Basin can be divided into three sub-basins, Berau, Muara, and Sou...

East Natuna is well known for its huge natural gas reserves with a very high CO2 content. The appearance of CO2 content in an oil and gas field is always considered as waste material and will severely affect the economic value of the field. The higher the content, the more costly the process, both technically and environmentally. In this research,...

Jatibarang Formation known as interesting volcanic reservoir in North West Java Basin. The reservoir was characterized by altered and naturally fractured that has significantly producing light oil. The volcanic Jatibarang reservoir consist of 3 volcanic cycles that are cycle 1, cycle 2 and cycle 3 with 16 faults configuration. Total and Fracture po...

The Muaro Silokek Area is a location that is quite complex in geological structure and consists of granitic rocks which vary in mineral composition, so it’s fit to do fieldwork for fracture characterization for analog basement fracture reservoir. This research was continuance of previous study about granitic basement fracture at around Sumatra, now...

Three-dimensional outcrop models, or Digital Surface Models (DSMs), have proved their capacity in many geoscience studies. Along with the advantage in the rapid acquisition, DSMs are capable of creating virtual models of fractured outcrops to be interpreted for further analysis. This paper reports the DSM robustness by comparing the result of fract...

On 28 September 2018, 18:02:44 local time, the Magnitude 7.5 earthquake accompanied by a tsunami and massive liquefaction devastated Palu region in Central Sulawesi, Indonesia. Comprehensive post-disaster surveys have been conducted, including field survey of surface ruptures, LiDAR, multibeam-bathymetry mapping, and seismic-reflection survey. We u...

span lang="EN-US">Reservoir vulkaniklastik di indonesia merupakan reservoir dengan produksi yang signifikan. Rekah alami adalah faktor terpenting dalam menentukan kualitas dan kuantitas dari reservoir vulkaniklastik untuk diungkap lebih detail. Log image dan data wireline log dapat digunakan untuk memberikan informasi zona rekah alami, dan rekahan...

Oligocene–Miocene carbonates are prolific hydrocarbon reservoirs in Southeast Asia. Extensive subsurface data for this stratigraphic section has become available through exploration and production activities. A carbonate shelf in the study area showed an evolution in shelf architecture and lithofacies during this period. Despite the economic import...

p>Lokasi daerah penelitian berada pada lapangan “FM” terletak pada Cekungan Banggai, Sulawesi Tengah. Tujuan dari penelitian ini adalah mengidentifikasi fasies dan lingkungan pengendapan yang berkembang pada Anggota Mentawa yang berada di Formasi Minahaki yang merupakan suatu reef system pada batuan karbonat. Metodologi penelitian yang dilakukan ya...

Naturally fractured reservoir (NFR) especially in granitic basement in Sumatra is not a new issue for research. Generally in NFR modeling, fracture density of rocks in a damage zone is the most significant factor that influence fracture porosity and fracture permeability. The aim of the study is to determining micro fracture in the granitic rocks a...

The Makassar Strait is an important oceanic gateway, through which the main branch of the Indonesian Throughflow (ITF) transports water from the Pacific to Indian Ocean. This study identifies a number of moderate (>10km3) to giant (up to 650km3) mass transport deposits within the Makassar North Basin Pleistocene-Recent section. The majority of subm...

div class="WordSection1"> Geomechanical analysis is performed at Gundih Field to obtain detail stress condition and mechanical properties from interval of interest. Ngrayong Formation is targeted as CO₂ injection interval of Gundih Field. The detail interval 8 is determined using multi-mineral modelling and calibrated using XRD and petro...

Negara Indonesia terletak pada pertemuan tiga lempeng dunia yaitu Lempeng Eurasia, Pasifik dan Indo-Australia. Posisi tersebut menyebabkan Indonesia dilalui oleh 2 jalur pegunungan dunia, yaitu Sirkum Mediterania dan Sirkum Pasifik. Hal tersebut menyebabkan Indonesia memiliki banyak gunung berapi, dan sebagian masih aktif sampai saat ini. Keberadaa...

One of major challenge and complex issue in structural geology is understanding the mechanism of Fold-Thrust-Belt (FTB). Numerous authors have been worked to solve these particular subjects in the past. However, most of them are concentrated in describing internal deformation and their tectonic evolution. FTB deformation is very complex due to thei...

Digital Outcrop Model (DOM) is a method of building a more realistic, 3D-based geocellular model based on photogrammetric data. DOM can describe position of fractures with a minimum length of four meters, so it can describe better distribution and fracture geometry with more precision. DOM used has a dimension of 320 m × 12 m at fractured granitic...

This study discusses the correlation between the fractal of spatial epicentre distribution of aftershock (D2) and active fault (D0) in the Sumatra region. We identified 15 earthquakes in this region that were followed by aftershock cluster and related to the Sumatra Fault Zone or Southern Andaman West Fault. The spatial epicentre distribution of th...

The increasing number of inhabitant in Sukacai village, Jiput – Pandeglang leads to the risen of clean water demand. However, along with the raising of demand, the groundwater availability has decreased. During the dry season, the water quality is poor and the rate of flow tends to be critical. As a consequence, the community is suffering from the...

Kali Lutut merupakan lokasi tersingkapnya seri batuan khusus yang disebut Lutut Beds, yang tersusun oleh batupasir dan batugamping dengan mineral kuarsa yang melimpah dan fragmen rombakan berbagai jenis batuan seperti batuan metamorf, vulkanik, batuan dasar, dan karbon. Penelitian ini dilakukan untuk merekonstruksi kondisi struktur geologi di Kali...

Cekungan Sumatra Selatan merupakan cekungan yang memiliki batuan dasar terekahkan penghasil gas yang cukup berhasil. Batuan dasar di Blok Jabung Sub-Cekungan Jambi memiliki potensi untuk menjadi reservoir pada batuan dasar terekahkan. Saat mengidentifikasi reservoir batuan dasar terekahkan, harus dilakukan identifikasi dari karakteristik rekahan te...

Hydrocarbon exploration in Eastern Indonesia region is mainly concentrated in the related convergent area such as Timor Basin. This area is characterized by the development of complex imbricate thrust-fold-belt deformation involving sedimentary sequence from the Australia continental margin. However, the exploration has not been successfully found...

Compared to the success of Mesozoic play in Westralian Superbasin (WASB), the lack of hydrocarbon discovery in West Timor within Timor Trough and North West Shelf Australia is still an enigma. The West Timor is still frontier petroleum province with problems in uncertainties of working petroleum system play as well as the hydrocarbon prospectivity....

The Lembang Fault is a major fault in western Java that skirts the northern edge of Bandung, one of Indonesia's largest cities, just south of the active Tangkuban Perahu volcano. Although it has no recorded or historical large earthquakes, the Lembang Fault shows obvious geomorphic evidence of recent activity and has long been thought to be active....

Indonesia is located in the very complex and active tectonic region and therefore prone to various natural hazards which caused a surface deformation. Accordingly, on the development of geodetic datum of Indonesia should take into account this conditions. Indonesian Geospatial Reference System 2013 (IGRS2013) is a semi dynamic geodetic datum that a...

On Tuesday 06 December 2016, the magnitude 6.5 earthquake occurred near Pidie Jaya district of Aceh province, Indonesia. Indonesian National Board for Disaster Management reported, this earthquake causing 106 casualties, 700 injuries, 16238 house damages, and 85161 evacuate. The horizontal deformation due to this earthquake has been recorded by con...

East Natuna is well known for its humongous natural gas reserves with a high CO2 content. The high quantity of carbon dioxide requires implementation cutting-edge capture and storage process in its development plan which comes at a high cost. In order to increase the economic feasibility of the area, the impurities are proposed to be utilized CO2 a...

Compared to the success of Mesozoic play in Westralian Superbasin (WASB), the lack of hydrocarbon discovery in West Timor within Timor Trough and North West Shelf Australia is still an enigma. The West Timor is still frontier petroleum province with problems in uncertainties of working petroleum system play as well as the hydrocarbon prospectivity....

Based on the data analysis of 16 years of TMPA dataset, the common patterns of rainfall over the Ciliwung River Basin are diurnal and semidiurnal. Those patterns can be associated by a stationary or moving rainstorm with different magnitude and direction. Based on hydrological model simulations, both the pattern and movement have a significant role...

This paper contains reservoir simulation study of carbon storage at Gundih field in Central Java Island, Indonesia. Two different cases of injection simulation were performed and analyzed in this paper. The cases represent the conditions when the smallest and largest volumes of CO2areinjected into the subsurface to see the changes of reservoir that...

Earthquake Geology of Indonesia Geologi Gempa Indonesia

Rantau Dedap Area is a geothermal field which is located in Great Sumatra Fault (GSF). The fault and fracture are main factor in the permeability of the geothermal system. However, not all faults and fractures have capability of to flow the fluids. Borehole image log is depiction of the borehole conditions, it is used to identify the natural fractu...

The field study is in onshore Northeast Java basin, targeting Pleistocene sediments dominated by volcanoclastic rock, known to be over-pressured and surrounded by mud volcanoes. Five wells had been executed since 2001 in Tanggulangin field that encountered significant problems requiring investigation to perform additional drilling operations. Geo-m...

Cleats are natural fractures within coal seams. This paper presents the results of regional cleat mapping and characterization in relation to coalbed methane (CBM) exploration and development in the Barito Basin, South Kalimantan, Indonesia involving two major coal layers, namely the Late Eocene Tanjung Formation and Early to Middle Miocene Warukin...

DOI: 10.17014/ijog.4.3.121-141A detailed geological mapping and fracture characterization had been performed in Bantimala area, South Sulawesi, Indonesia. The geology of the studied area is composed of pre-Tertiary metamorphic, sedimentary, and igneous rocks which tectonically mixed forming a mélange complex. Located on the southeastern margin of S...

Sulawesi microplate Island is located at famous triple junction area of the Eurasian, India–Australian, and Philippine Sea plates. Under the influence of the northward moving Australian plate and the westward motion of the Philippine plate, the island at Eastern part of Indonesia is collide and with the Eurasian plate and Sunda Block. Those recent...

In the October 11st 2013, Indonesia introduced the new national geodetic datum which called as Sistem Referensi Geospasial Indonesia 2013 (Indonesian Geospatial Reference System 2013). This is a semi dynamic datum in natural, which the reference epoch define at 2012.0 and the coordinates change due to plate motion and earthquake was accommodate usi...

One of methods that can be used to determine the tectonic deformation status is rate estimation from geometric rotation and strain using quantitative velocity data from GPS observations. Microplate Sulawesi region located in the zone of triple junction (Eurasia, Australia and Philippine Sea Plates) has very complex tectonic and seismic condition, w...

Since October 2013, Indonesia proposed new geodetic datum which called Sistem Referensi Geospasial Indonesia 2013 (Indonesian Geospatial Reference System 2013 (IGRS2013). The coordinates of IGRS2013 defines at reference epoch 2012.0 and connected to ITRF2008. As a semi dynamic datum in natural, IGRS2013 must have a deformation model to transform th...

Tanggulangin oil and gas field is located in Northeast Java Basin, is one of the important operation area in East Java, was firstly explored through drilling operation in 2001, and has already produced significant oil and gas for PT.Lapindo Brantas. Production optimization through additional drilling campaign and more detailed geomechanical analysi...

The Banda Outer Arc in Eastern Indonesia is characterized by a complex fold-thrust-belt composed largely of Australian passive margin sequences. The area covered by this study is the offshore Tanimbar region in the Southern Banda Outer Arc including the Babar Selaru block. The structural framework in this area consists of multiple normal fault tren...

GPS measurements from 1993 until 2014 across Indonesia region are providing longer time series at 2 – 3 millimetre-level precision from which surface velocity estimates are derived. In this study, we use this GPS velocities field to construct a crustal strain rate map and not including the physical model yet. In our preliminary result, we only comp...

We uses survey mode (sGPS) and continuous GPS (cGPS) from Geospatial Information Agency, National Land Agency and Sumatran GPS Array (SUGAR) from 1993 – 2014 to derive new GPS velocities field in Indonesia region. In this study we quantify the velocities field from our GPS sites during this period. We reprocess and analyses our GPS data using the G...

Most of the Cenozoic tectonic evolution in New Guinea is a result of obliquely convergent motion that ledto an arc-continent collision between the Australian and Pacific Plates. The Gunung Bijih (Ertsberg) Mining District(GBMD) is located in the Central Range of Papua, in the western half of the island of New Guinea. This study presentsthe results...

Recent study of the Luk Ulo melange complex using field mapping, SEM and XRD analyses for the melange matrix

Balerang and Rajabasa are Quaternary volcanic complex with active fumaroles though no historic eruptions were recorded. These volcanoes are stratovolcanoes and located in the volcanic front of Sunda arc. Although some studies reported the geological setting of these volcanoes in these past few years, their detailed volcanostratigraphy and evolution...

Gundih CCS pilot project is located within the Gundih gas field operated by PERTAMINA at Central Java, Indonesia. Geologically, this field is part of East Java Basin, which is well known as prolific hydrocarbon basin in South East Asia region. Gundih field and surrounding area is a gas field, which has been in production since the end of 2013. CO2...

Sunda block is one of block in Southeast Asia regional that has defined its own block rotation. This block covers a large part of Southeast Asia that includes IndoChina, Thailand, Peninsular Malaysia, Sumatra, Borneo, Java and the shallow seas located in between (Sunda block). We use new GPS observations from campaign and continuous networks in Ind...

The standard fault seal analysis using SGR algorithm is relying on two important parameters mainly fault throw and v-shale values. Both parameters are determined from interpretation of seismic and well data through petrophysical analysis. However, v-shale values are highly influenced by clay mineral composition particularly area with complex minera...

Indonesia is a maritime continent with a complex and active tectonic setting and therefore prone to various natural hazards. The surface deformation caused by these hazards, coupled with tectonic plate motion in and around the Indonesian region, will cause the geocentric coordinates of many geodetic control benchmarks and monuments in Indonesia to...

Fracture has become a critical factor in enhancing the permeability potential of shale in producing gas. Shale gas may be stored as a free gas in fractures and intergranular porosity, so the developed well connectivity between pores and fractures is needed. A deeper understanding of the fracture shale gas of the Tanjung Formation, Barito Basin, Sou...

Satuan Larangan adalah batuan hasil percampuran tektonik dalam suatu zona sesar akibat tumbukan lem-peng benua mikro Gondwana dengan bagian timur daratan Sunda setelah peristiwa subduksi Kapur Akhir-Paleosen. Satuan ini diusulkan oleh Prasetyadi (2007) yang terpisah dari Komplek Mélange Luk Ulo sebagai Komplek Larangan karena umur Eosen Akhir yang...

Click here and insert your abstract text. Physical properties of reservoir and seal-layer samples are essential information to evaluate the storage and seal potential and to predict long term CO2 behaviour in reservoir. In this study, we measure the elastic wave velocities (Vp and Vs), porosity and density of sandstone, limestone and lime-mudstone...

A pilot CCS project in Indonesia will be implemented in Gundih area, Central Java Province in Indonesia. Before the CO2 injection, the reservoirs for CO2 injection must be characterized carefully by conducting geophysical exploration as well as reservoir simulation, in order to make sure that the reservoir is suitable for CO2 storage. Here we repor...

Unstable water table would lead to moist condition in the uppermost layer of the ombrotrophic peat, favoring fungi to grow. This is confirmed by the higher abundance of sclerotinite maceral in samples from the upper part of the coal core. Sandbox experiment is one of the types of analogue modeling in geological sciences in which the main purpose is...

The Bird's Head area of New Guinea is underlain by Australian continental crust and has relatively complete Palaeozoic to Recent stratigraphic record. One of the siliciclastic formations of the Bird's Head is the Tipuma Formation. Its age has been estimated as Triassic to Jurassic and is a potentially important hydrocarbon reservoir. New fieldwork...

DOI:10.17014/ijog.v1i3.189Sandbox experiment is one of the types of analogue modeling in geological sciences in which the main purpose is simulating deformation style and structural evolution of the sedimentary basin. Sandbox modeling is one of the effective ways in conducting physically modeling and evaluates complex deformation of sedimentary roc...

The study area is located in the Barito Basin, South Kalimantan Province which is known as major coal producer in Indonesia. Cleats are described as natural fractures developed in coal seams and acted as the main parameters in controlling permeability performance in the coal bed methane development. Therefore, knowledge of the origin and character...

Cleats are considered as one the important parameters in the CBM development particularly related to permeability. A complete characterization of cleat distributions and orientation may provide a better tool for indirectly estimating porosity and permeability in coal reservoirs as critical parameters for coalbed methane extraction. This paper is pr...

The "Paleoseismology of Palukoro Fault, Historical Records of 1907 & 1909, and recently 2012 Earthquake Events in Central Sulawesi, Indonesia" at the 3rd International Symposium on Earthquakes and Disaster Mitigation 2013 - Hotel Tentrem Yogyakarta present about the repetition of the 1909 big earthquake on the future - possible in 2014 if it has sa...

Carbon Sequestration Project located in Gundih Field, Central Java, Indonesia is one of the CCS projects that are in Asia. CO2 emissions that derived from production gas residue in this field has reached 15% of total gas after refinery in Central Processing Plant. This study was conducted to determine the best reservoir for CO2 injection. Acoustic...

One of the biggest exploration risks to proving geothermal reserves is well bore targeting. Based on the strain structural pattern in the Rantau Dedap prospect an oblique convergent strike-slip faulting model was developed. The structure model shows that a dilatational fault system has formed as a result of dextral movement along Sumatra (Semangko)...