Abdurrokhim Abdurrokhim

Universitas Padjadjaran | UNPAD · Department of Geology

Aluvium merupakan fitur geologi yang memiliki sifat rentan terhadap pengaruh gempabumi. Daerah Porong dan sekitarnya tempat semburan Lumpur Sidoarjo (Lusi) terjadi merupakan daerah dataran yang ditutupi oleh endapan aluvium Delta Brantas, sehingga daerah ini merupakan zona lemah yang rentan terhadap pengaruh gempabumi. Hal ini diperkuat dengan adan...

Cekungan Sumatra Tengah merupakan salah satu cekungan penghasil hidrokarbon di Indonesia, karena keterbatasan ekplorasi dan studi, perkembangan cekungan tersebut mengalami hambatan. Penelitian ini bertujuan untuk mengidentifikasi lingkungan pengendapan dan sistem petroleum melalui studi stratigrafi seismik dan sumur. Penelitian ini menggunakan meto...

Parameter petrofisika dan jenis fluida perlu diketahui pada setiap sumur di lapangan ‘X’ pesisir Cekungan Sumatra Tengah, sehingga akan memperlancar proses analisis dan eksploitasi. Tujuan penelitian ini adalah menentukan porositas, densitas, impedansi akustik dan saturasi fluida pada 3 (tiga) sumur. Metode yang digunakan adalah Metode Well Logging...

Bogor Trough in the West Java are typified by turbidity deposits with the source are mostly characterized by volcanoclastic materials from the southern area. The Trough actually receipt the sediment from both volcanoclastic materials from the south and continental source from the north. But, the discussions of sediments in term of composition and t...

The purpose of this study was to produce web-based learning using a hypermedia assisted discovery guided approach for junior high school students. The development model applied in this study is the ASSURE model. The development stage begins with analyzing the characteristics of students, then stating the learning objectives. The next stage is selec...

Published at Berita Sedimentologi - Indonesian Journal of Sedimentary Geology

Since 2006, the Lusi mud eruption is ongoing in the northeast of Java Island, Indonesia. We perform a 3D seismic tomography of the area surrounding Lusi and the adjacent Arjuno-Welirang volcanic complex using P-wave arrivals of 797 local earthquakes recorded on 31 seismic stations for two years between 2015 and 2016. Resolution tests show that we c...

DOI:10.17014/ijog.6.2.209-222Since the discovery of major oil and gas reserves in carbonate rocks in the Middle East, carbonate reservoirs became important to the petroleum industry. Carbonate rocks have covered only 20% of the sedimentary rock records. However, carbonate reservoirs hold 50% of the world petroleum reserves. Arun Carbonate Reservoir...

Rambatan Formation in the western part of North Serayu Basin, Brebes, Central Java, comprises generally flysch facies of turbidite sediments deposited in a deep marine environment. This formation is equivalent to Merawu Formation found in the eastern part of the basin and deposited in the environment of tidal flat to subtidal. The turbidite sedimen...

The research location is in the PPSDM Geominerba field campus. The campus is located in Padalarang, West Java that is surrounded by the open-pit mining of limestone and marble. This limestone was formed in Oligo-Miocene of Rajamandala Formation. The research objective was to determine the condition of the slopes around the campus based on geomechan...

Bojongkoneng is a regional area that developed significantly in the recent years. The genetic characteristics of study area is deformed by Quaternary volcanic deposits. Research area is included in the zones of Undifferentiated Young Volcanic Products of Mount Tangkubanparahu. The condition and physical characteristic of materials are important to...

Rock physical parameters value (Vp and Vs) is one of fundamental aspects in reservoir characterization as a tool to detect rock heterogenity. Its response is depend on several reservoir conditions such as lithology, pressure and reservoir fluids. The value of Vp and Vs is controlled by grain contact and contact stiffness, a function of clay mineral...

In deviated and horizontal drilling, hole-cleaning issues are a common and complex problem. This study explored the effect of various parameters in drilling operations and how they affect the flow rate required for effective cutting transport. Three models, developed following an empirical approach, were employed: Rudi-Shindu’s model, Hopkins’, and...

Dukungan data geomekanika sangat dibutuhkan dalam merancang gasifier, analisis dan pemodelan pada gasifikasi batubara bawah tanah (underground coal gasification-UCG), baik yang berasal dari uji langsung (in-situ) maupun uji laboratorium. Salah satu data pengujian laboratorium yang cukup penting untuk mengevaluasi kondisi batuan di lokasi UCG adalah...

Abstrak In the southern part slope of Gunung Karang in Pandeglang, there are many well-outcrops of volcanic materials that developed during Quaternary. The deposits represent various lithofacies both vertically and laterally. In general the lithologic characteristics that are found in the study area can be grouped into three units, (1). Tertiary s...

Jatiluhur Formation, Klapanunggal Formation, and Subang Formation are well exposed in the northern part of the Bogor Trough, in Cipamingkis and Cileungsi Rivers, Bogor. Those formations are developed in the slope and shelf environment during the middle-late Miocene, typified by a succession of claystones, siltstones, sandstones, and limestone. A to...

The spectacular eruption of Lusi began in NE Java, Indonesia, on the 29th of May 2006 and is still ongoing. Since its birth, Lusi has presented a pulsating activity marked by frequent eruptions of gas, water, mud and clasts. The aim of this study is to bridge subsurface and surface observations to describe Lusi's behaviour. Based on visual observat...

This poster explain the monitoring and characterizing the geysering and seismic activity at Lusi mud eruption site, East Jawa Indonesia

This Poster describe the Monitoring and Characterizing the Geysering and Seismic Activity at Lusi Mud Eruption Site, East Java, Indonesia

A composite succession of total more than 2000 m thick deposits of lower–middle Miocene Pulau Balang Formation is well exposed. In general, the formation represents shallowing-up succession, typified by deep-water deposits in the lower part and shallow-water–paralic deposits in the upper part. Thick-bedded limestone that exposed in the Batu Putih a...

Carbonate rocks is one of reservoir rock with the largest reserves in the world. Different from other types of sedimentary rocks, carbonate rocks are grow that make it unique as the reservoir rock. Carbonate rocks have large porosity and permeability caused by diagenetic process. Kepulauan Seribu located in the northwest of Java Island. It comprise...

This paper investigates slope channel initiation by seabed irregularities that were initially formed by slump scars in the lower to middle Jatiluhur Formation, part of the middle- to late Miocene successions in the Bogor Trough, West Java. This Miocene succession is up to 1000 m thick in the study area, and is interpreted as a prograding slope–shel...