Budi Muljana

• Doctor of Engineering
• Lecturer at Padjadjaran University

Coal quality is one of the key factors in determining the effectiveness of processing and utilization. Coal quality assessment involves analyzing physical and chemical aspects to determine its characteristics. Coal quality is also influenced by geological conditions at the mining site, which affect the quality and amount of carbon in the coal. To e...

The dynamics of the Banda Sea can influence larger-scale oceanic processes and contribute to the global ocean circulation system. This research aims to utilize data from a global in situ data repository spanning the years 1960 to 2018, along with data collected from 12 stations during the recent Jalacitra II-2022 expedition. The focus is on analyzi...

Abstrak-Batugamping Formasi Paciran berumur Pliosen tersingkap di daerah Watuputih, Rembang, Jawa Tengah. Pengukuran stratigrafi rinci dengan skala 1:100 dengan total ketebalan batugamping 57,6 m. Analisis mikrofasies menggunakan sayatan tipis menghasilkan 3 SMF (Standard Microfacies) yaitu burrowed biocklastic wackestone (SMF 9), bioclastic packst...

This study analysss the quality of sand stone as reservoir in Sentul Formation, Tarakan Basin, based on petrography and routine core analysis. The quality of the sandstone in facies A (depth of 1743.75–1747.28m) is moderate. This assessment is based on the porosity value of routine core analysis from 19.48% to 27.88%, and permeability value from 25...

Vertical variation of the Miocene sandstone mineralogy in the Kutei Basin has been recognized but the reasons for this remain unsaid. Deltaic-sandstone facies, parasequence sets, detrital mineralogy, and provenance of the uppermost Middle Miocene to the Upper Miocene strata in the Anamta and Amantu areas were analyzed using twenty-three wells and s...

Bangka Belitung has known as Island that is traversed by the Southeast Asian granite belt. Tanjung Berikat waters are one of the waters in Central Bangka Regency that is traversed by the Southeast Asian granite belt, so it has various potential mineral placers such as silica sand (that showed by quartz content). This study aims to determine the con...

Arafura Sea is influenced by several climatic dynamics, it is also a part of the coral triangle that provides most of marine organism diversity of the world. Therefore, this area is an important waters that impact the climatic dynamic so its paleoceanographic changes need to be understood. For that, we analyzed the foraminiferal PB ratio from marin...

DOI:10.17014/ijog.9.3.291-302The methodology of facies analysis may include statistical examination to establish a local facies model. Without such examination, it is very difficult to predict the facies succession and to interpret the changes in depositional conditions from thick or complex stratigraphic sections. Based on the survey of sedimentar...

During Tertiary, the sedimentation model in Ombilin Basin, West Sumatra, was strongly influenced by tectonisme. It is indicated by characteristic and composition of the rock, and distribution pattern for each formation. In general, it can be decided into two main groups according to the age of rocks, which associated with the tectono-sedimentation...

As a natural phenomenon, land movement does not occur suddenly, but it is a long-term phenomenon in the form of un-recoverable low rates deformation caused by constant stress on a slope body and known as creep. Therefore, it is very important to understand the rheological characteristics of the soil under constant stress and implication to its long...

Ground movements do not remain constant over time but it is a time-dependent phenomenon in the form of long-term deformations due to in-situ stresses acting all the time on the slope body. Therefore, the time-dependent behavior of soil mass is an important factor that influences long-term slope stability. To understand the long-term slope stability...

Palynomorph is a dust-sized material that is resistant to strong acids which can reflect the age and environmental conditions when a rock was formed. Batuasih Formation is one of the oldest rock formations in Bogor Basin which is rarely interpreted, especially from its palynological aspect. This study aims to see palynomorph characteristics, relati...

Bintan Island is one of the areas traversed by the Southeast Asian granitoid belt which is known to have the potential for heavy mineral placer deposits. Due to the dwindling presence of heavy mineral placer deposits in land areas, it is necessary to look for the potential presence of heavy mineral placer deposits in water areas. Searching for plac...

Desa Malatisuka merupakan salah satu desa dengan kategori tertinggal di Kecamatan Gunung Tanjung, Kabupaten Tasikmalaya yang memiliki potensi alam dan lanskap berlimpah yang dapat dijadikan destinasi wisata unggulan apabila dikelola dengan baik dengan menerapkan konsep Ekowisata dan pengembangan mengacu pada prinsip berkelanjutan. Tujuan dari penel...

As we may all be aware the oil and gas wellbores offshore Kutei and North Makassar have not optimally penetrated the objective strata, which is the Middle Miocene’s deep-water reservoirs. Therefore, evaluating the quality of these reservoirs with onshore dataset then comparing them with the proven Late Miocene’s deep-water producing reservoirs had...

Massive exploration effort in the study area was conducted in 1996-2014 when deep-water drilling campaign found significant oil and gas discoveries but yet to optimally reach the middle Miocene deep-water sandstone reservoirs. Outcrops, well bores and 2D-seismic data had been incorporated in this study. Datum age from several taxon indicators have...

Proxapertites have become one of the most significant indicators of ancient rock in Indonesia. Walat Formation is one of the oldest rocks exposed in Sukabumi, West Java, Indonesia. These Proxapertites have not been described in detail about their characteristics in previous studies, especially on Walat Formation. Therefore, knowing the characterist...

Penelitian ini bertujuan untuk mengetahui bagaimana masyarakat setempat sebagai pengelola geosite membuat perencanaan pengembangan geosite di Kawasan Geopark Belitong. Dalam hal ini masyarakat setempat menjadi sumber utama informasi penelitian. Metode penelitian yang digunakan adalah studi deskriptif dengan pendekatan kualitatif. Penelitian ini tid...

Walat Formation is equivalent to Bayah Formation. This formation is the beginning of Bogor basin deposition. In this case, age and environment of this formation have been analyzed by previous researchers, but the results of age and environment interpretations have different ranges, especially from its palynological aspect which until now Walat Form...

This study focuses on the analysis of sedimentary facies and ichnogenus variations to determine the palaeogeographic setting of turbidite deposits that are clearly exposed in the surroundings of Majalengka area, West Java, Indonesia. Lithofacies variation in turbidite deposits, identified from detailed stratigraphic sections, were visually presente...

Irrigation in developing countries tends to be stereotyped as equity reducing, in competition with other uses for scarce water resources, often negatively impacting disadvantaged groups. This study aims to clarify the linkages between irrigation and poverty by offering an objective review of recent research on the subject. The key questions address...

Floral diversity is a measure of number of type flora in an area, and reflects how vegetation develops in response to the environmental condition during a certain time interval. The present study aims to examine changes in the diversity of vegetation (pollen, spores and algae), evenness, and similarity in the Bandung Basin through a core of 240 cm...

Batujajar and its surrounding areas, situated in the west of the Bandung Basin, are geologically composed of various Tertiary rock formations with complex fold and fault systems. Springs and drilled wells in sandstone aquifers, tuffaceous sand, and tuffaceous breccias mark the development of their aquifer systems. This study aimed to determine the...

IClimate is the prevailing weather condition of an area throughout the year. Climate affects the vegetation in a region. The research aimed to study the climate and humidity change during the Holocene in Bandung Paleo-Lake based on palynomorph analysis. The twenty-four samples were taken using hand drill in 172.5 - 52.5 cm depth, continued with pre...

A regional development requires some analyses in terms of the constraint and the potential. Constraints of a development need to be managed by periodic monitoring, while the potentials need to be maintained or optimally improved. The hexa-helix concept is a development of penta-helix concept with addition in the role of law and regulation. Citatah...

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene – Quarternary clastic sediment. Upper Miocene – Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposi...

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene – Quarternary clastic sediment. Upper Miocene – Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposi...

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene – Quarternary clastic sediment. Upper Miocene – Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposi...

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene – Quarternary clastic sediment. Upper Miocene – Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposi...

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene-Quarternary clastic sediment. Upper Miocene-Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposit. A...

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene-Quarternary clastic sediment. Upper Miocene-Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposit. A...

Lapisan batubara D termasuk ke dalam Blok Suban Burung, Formasi Muara Enim, Subcekungan Palembang Tengah, Cekungan Sumatera Selatan, berumur Miosen Tengah sampai Miosen Akhir. Penelitian ini bertujuan untuk mengetahui karakteristik batubara dan lingkungan terhadap percontoh Lapisan Batubara D dari kegiatan pengeboran penelitian gasifikasi bawah per...

Karakteristik batubara dari dua wilayah prospek batubara di Sumatera dievaluasi dengan menggunakan metode kimia dan petrografi batubara. Penelitian terfokus pada evaluasi peringkat (tingkat pembatubaraan di daerah penelitian), tipe (komposisi material organik dan lingkungan pengendapan batubara) serta grade (kandungan material inorganik yang bisa b...

ABSTRAK Karakteristik batubara dari dua wilayah prospek batubara di Sumatera dievaluasi dengan menggunakan metode kimia dan petrografi batubara. Penelitian terfokus pada evaluasi peringkat (tingkat pembatubaraan di daerah penelitian), tipe (komposisi material organik dan lingkungan pengendapan batubara) serta grade (kandungan material inorganik yan...

Batubara yang cocok untuk kegiatan gasifikasi bawah permukaan harus memenuhi persyaratan, antara lain kondisi geologis, ketebalan, kedalaman, kadar air total dan kadar abu. Berdasarkan persyaratan ini, tidak semua batubara dalam bisa dimanfaatkan untuk kegiatan gasifikasi bawah permukaan. Kegiatan eksplorasi batubara perlu dilakukan untuk meminimal...

Limau area is an old field in the first drill by BPM in 1951 with the drilling of TL-01 and on January 1, 2005 in return to PT.Pertamina (Persero) from JOB-PSEL. There currently are 8 blocks , 7 blocks already done waterflood in several layers. Original Oil In Place (OOIP) throughout Limau status in January 2005 amounted to 823 MMbbl , cumulative p...

Batubara seam X78 pada Formasi Balikpapan, Cekungan Kutai, secara lateral memiliki anomali kandungan total sulfur, dimana di bagian utara dan selatan daerah penelitian kandungan sulfur cukup tinggi dibandingkan di bagian tengah daerah penelitian dengan kecenderungan meningkat ke bagian selatan daerah penelitian. Maksud penelitian ini adalah untuk m...

Majalengka sub-basin is located at the middle part of West Java. This basin, regionally, is part of Bogor trough, a back-arc basin. The basin is sedimentary basin formed during the early Tertiary. Getting into the middle to late Miocene, sedimentation in this basin was dominated by a turbidite derived from multiple-source, Northwest Java basin in t...

The Majalengka sub-basin is composed of an approximately 4 km thick turbidite-sequence subdivided into three formations as follows Cisaar, Cinambo and Cantayan Formations. The last formation is composed by two members, i.e. Halang and Bantarujeg Formations, which is distinguished by the volcanic content. All sedimentary rocks were deposited during...