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ANALISIS FASIES DAN PERMODELAN SIKUEN STRATIGRAFI BATUAN KARBONAT LINTASAN KORIDO, FORMASI WAINUKENDI, KABUPATEN SUPIORI, PAPUA Joshua Shima; Hadi Nugroho; Fahrudin Fahrudin; Asep Kurnia Permana
Geological Engineering E-Journal Vol 6, No 1 (2014): Volume 6, Nomor 1, Tahun 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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Korido is located in Supiori District , Papua , Indonesia . This area is in the north of the Central Range and included in the North Irian Basin which is the fore arc basin (Mc Adoo & J.C. Haebig, 1999). Own research area based on geology map created by Masria et al ( 1981) composed by Wainukendi Formation which is composed predominantly by carbonate sedimentary rocks .The purpose of this study is to determine the pattern of lithology and lithological boundaries were obtained from measured stratigraphy along the trajectory of research which is then integrated with the micro facies analysis and facies zone were obtained by petrographic analysis to determine the depositional environment and depositional processes that occur in Wainukendi Formation. More over, the relative age determination is also done based on the analysis of large benthic foraminifera so the deposition process can be integrated with relative age . The ultimate goal of this research is to integrate field data, micro facies analysis results and deposition process analysis results to create a model of sedimentation, determining stratigraphic marker, and the determines system tract that develops in Wainukendi Formation in the study area .The method used in this research is geological mapping focused on stratigraphy subjects in Korido area to get lithostratigraphy sequence, platform type, sedimentation processes, and laboratory analysis include petrographic analysis to determine micro facies and facies zone and paleontological analysis to determine the relative age which then integrated to obtain stratigraphic marker and systems tract that develops in Wainukendi Formation. From the analysis of platform type showed the type of platform existing in this area is rimmed shelf type which is then used as a reference in micro facies analysis according to Wilson (1975) to obtain 4 facies zone that exist in this study area is reef platform margin , slope , toe of slope apron and deep shelf . Based on the analysis of the deposition process obtained 3 cycles of sedimentation that occurred from Wainukendi Formation . From the results of this analysis are used in determining the stratigraphic sequence to obtain stacking patterns that evolve based sequence boundary and its systems tract is composed of LST - TS - MFS - TST - HST so that obtain a full cycle changes in accommodation space and sediment supply where there is an increase in accommodation space which was offset by an increase in the supply of sediment in LST phase is characterized by progradation and agradation, an increase in the supply of sediment is lower than the increase in accomodation space in TST phase is characterized by retrogradation, and lastly, a decrease in accommodation space while sediment supply rate is still high in HST phase characterized by progradation.

PENYELIDIKAN GEOLOGI TEKNIK UNTUK PENENTUAN LOKASI PEMBANGUNAN AS BENDUNGAN PELOSIKA DI DESA ASINUA JAYA, KECAMATAN ASINUA, KABUPATEN KONAWE, PROVINSI SULAWESI TENGGARA Sawung Kawedar Daya Kristy; Hadi Nugroho; Wahju Krisna Hidajat; Dandung Marhento
Geological Engineering E-Journal Vol 6, No 2 (2014): Wisuda Periode Juli - Oktober 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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Development plan of Dam Pelosika is located in a river Konaweha, Asinua Jaya village, Asinua District, Konawe, Southeast Sulawesi Province. Konaweha river has a length of 127 km and has an Regional water bin area of 6,664 km2.The purpose of this research is to study the geology around the River Konaweha to determine the condition of the morphology and lithology of the area so it can be recommended as dam Pelosika construction site of several alternative locations. Then determine the engineering geology condition of the selected location. In addition, determine the spread and water level inundation. The research method used was a descriptive survey method engineering geological mapping. The descriptive method is collecting secondary data from topographic maps, regional geological maps, earth maps and technical data of dams. While the analytical survey method is analyze the data based on the geological conditions of the regional geology and geological engineering investigation of the data included surface geological conditions, core drilling and test results of geoelectric. Based on investigation in the field, the morphological conditions of the studyis divided into three units namely structural denudated steep hills landform unit, denudated structural undulating hills landform unit and plains of fluviall and denudated form unit. The lithology of the study area is a constituent of metamorphic rocks such as schist of Paleozoic Metamorphic Formation, conglomerates and sandstones of Pleistocene age Alangga Formation and deposition of clay to gravel-sized Alluvium Holocene age. Based on several parameters geology and geological engineering, so that from several alternative locations as dam development determined that 4th alternative locations is a selected location for construction Dam Pelosika. The foundation of the dam on the left side at elevation +121 m rests on weathering soil bedrock sandy silt-sized. The foundation of the center of the dam at elevation +16.9 m rests on clay silt layers firm. The foundation of the right of the dam at elevation +115 m rests on weathering soil bedrock sandy silt-sized. The inundation spread area is 165.98 km2, constrained by the topography of the area around the river. Inundation water levels is +180 m.

MODEL KONSEPTUAL PERKEMBANGAN DELTA SEPINGGAN, INTERVAL “MFS 1-MFS 5”, BLOK SOUTH MAHAKAM, CEKUNGAN KUTAI, KALIMANTAN TIMUR Irfandi Oky Permana; Hadi Nugroho; Wahju Krisna Hidajat
Geological Engineering E-Journal Vol 6, No 2 (2014): Wisuda Periode Juli - Oktober 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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The energy demand are growing by day, especially in Indonesia, whereas these needs are not matched by the number of oil and gas production in Indonesia. This case is evidenced by the release of Indonesia as a member of an organization of oil exporting countries on October 9-10, 2008 in Vienna (Kompas, 10 October 2008). Thus required a study on the potential of producing hydrocarbon basin that will be expected to meet the energy demand of the oil and gas in Indonesia. One of the basins in Indonesia is the Kutai Basin which is the largest and widest Tertiary Basin in western Indonesia. The study area is located at the South Mahakam, Kutai Basin, East Kalimantan. This study aims to make conceptual model of delta Sepinggan development. The method included analysis of well log analysis method, 2D seismic analysis method, method of data analysis of rock core and biostratigraphic data analysis method. Based on analysis results can be obtained in the form of variations in lithology information on Sepinggan Zone deltaic sequence at intervals of MFS 1-MFS 5 marker are coal, sandstone, shale and limestone. Process on Sepinggan Delta are regretion process dominated on Early Miocene – Middle Miocene (N4-N14), and transgretion process on Middle Miocene –Late Miocene (N14-N16). Sedimentation process influenced by East Manpatu Fault that increasing accomodation space in Rocky Field area, so sediment layer in Rocky Field area is thicker 60-150 meter than Zahra-Zidane Field area.

ANALISIS PROVENANCE, DIAGENESIS DAN LINGKUNGAN PENGENDAPAN SERTA PENGARUH TERHADAP KUALITAS RESERVOIR BATUPASIR FORMASI TALANG AKAR, SUMUR FA-21, CEKUNGAN JAWA BARAT UTARA Fahmi Abdillah; Hadi Nugroho; Fahrudin Fahrudin; Agus Priyantoro
Geological Engineering E-Journal Vol 6, No 2 (2014): Wisuda Periode Juli - Oktober 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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The necessary of technology at this time resulted the necessary of energy resources will increasing, and it also result the scarcity of energy resources. One of the energy resources that is still used as a major energy resource is oil and gas. To overcome these problems, exploration activities at this time needs to be further improved. In the field of exploration, one of the most important things to know is reservoir. Reservoir quality is important for us to know so that we can determine whether an area has hydrocarbon potential to be developed or not. The main parameters of reservoir quality are porosity and permeability.In this study discussed the analysis of provenance, diagenetic and depositional environment of the sandstone reservoir of Talang Akar Formation, North West Java Basin and from the results of the analysis will be associated with the effect on reservoir quality. To determine the reservoir quality based on these parameters, can be done by several methods such as petrographic, cores, SEM and XRD analysis. From the analysis that has been done can be seen that the provenance of Talang Akar sandstone is Granite. So it can be seen that the Talang Akar sandstone which the provenance is Granite has good reservoir quality, with porosity values ranging from 19.04% to 24.28% and permeability ranging between 30-674 mD or belonging to the class good - very good (Koesoemadinata, 1980). Then the diagenetic process that occurs is compaction, cementation, replacement and dissolution. The process of compaction, cementation and replacement leads to reduced rock porosity values ranging from 2.25 to 11.5%, while the dissolution process resulting in increased rock porosity is about 1.5 - 2%. The depositional environment of the Talang Akar Sandstone is Upper Delta front. Rock facies in the upper delta front has good reservoir quality, with porosity values range from 19.04% to 24.28% and permeability range between 30-674 mD or belonging to the class is good - very good (Koesoemadinata, 1980).

PENENTUAN ZONA PROSPEK HIDROKARBON PADA FRACTURED BASEMENT BERDASARKAN DATA WELL LOG DAN SEISMIK 3D PADA LAPANGAN MALAWAPATI SUB-CEKUNGAN JAMBI, CEKUNGAN SUMATERA SELATAN Rahman Wahyudianto; Hadi Nugroho; Yoga Aribowo; Robet Wahyu Widodo
Geological Engineering E-Journal Vol 6, No 1 (2014): Volume 6, Nomor 1, Tahun 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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Hydrocarbon discovery in the basement of several exploration wells in South Sumatra Basin, giving new challenges for geologists to find hydrocarbon reserves with the concept of new thinking, the best one on the concept of the geology and oil exploration in fractured basement.Research object is on the basement high, which dominant lithology is schist. This research is located at Malawapati and includes part of the Sub-Basin of Jambi, South Sumatra Basin. Based on Drill Stem Test (DST), hydrocarbon potential of fractured basement on Prabu X1 is around 0.2-1 MMSCFGPD (Million Standard Cubic Feet Gas Per Day) and on Dharma X3 is around traces-1 MMSCFGPD, then it needs a good study to determine hydrocarbon potential in the fractured basement.The purpose of this research is obtaining a description of the basement characteristic and vertical fracture intensity in the basement by using well log and master log, obtaining horizontal fracture distribution in the basement by using 3D seismic and seismic attributes, obtaining a description of the basement geometry by analyzing geological structures in the basement, determining correlation of the two data are intensity and distribution of fracture to determine the location of the most prospect as a hydrocarbon zone.The research method is using descriptive and analytical methods. There are 3 wells in Malawapati field. There are 2 wells which reaching the basement, which are Prabu X1 and Dharma X3 and also a well not reaching the basement, which is Dharma X3. Well log and master log is used to determine basement characteristics and vertical fracture intensity with Fuzzy Inference System (FIS), it is used for reference in retraction the target zone on seismic attribute by type variance cube, which the suitable are 70 ms below the horizon of Prabu X1 and 25 ms below the horizon of the well Dharma X3. 3D seismic data is used to determine basement geometry and horizontal fracture distribution with seismic attribute by type variance cube.Based on the correlation analysis of well log, master log and seismic attribute by type variance cube, is known that hydrocarbon prospect zone in vertical is weathered basement zone and high intensity zone. Hydrocarbon prospect zone in horizontal is zone A which is the top of basement high zone and also not affected by zone fault so it has low fracture intensity. Zone B is edge of the basement high zone and also affected by zone fault so it has high fracture intensity

ANALISIS SIKUEN STRATIGRAFI DAN PEMODELAN FASIES FORMASI TANJUNG BERDASARKAN DATA LOG SUMUR DAN DATA INTI BATUAN PADA LAPANGAN MIR CEKUNGAN BARITO, KALIMANTAN SELATAN Muhammad Ilham Ridwan; Hadi Nugroho; Yoga Aribowo; Mill Sartika Indah; Perdana Rakhmana Putra
Geological Engineering E-Journal Vol 6, No 2 (2014): Wisuda Periode Juli - Oktober 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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Increased consumption of energy resources of oil and gas, exploration and exploitation process results performed optimally. Interpretation of subsurface using well log data combined with geological disciplines becomes very important in increasing exploration. Location of the study lies in one of the field located in the Barito basin of South Kalimantan province owned by Pertamina UTC. This research was done in the implementation of the final project addressed the subject of mapping subsurface using sequence stratigraphic approachs.The purpose of this research is to determine the type of lithology, facies and depositional environment, sequence stratigraphy, distribution of sedimentation and facies modelling Tanjung Formation in the MIR field. This research is using descriptive method and analytical methods. Descriptive method is a method that does some literature review. While the analysis method is using qualitative analysis to determine the type of lithology, stratigraphy and facies modeling sequence. This analysis uses software petrel 2009 in an analysis of well logs in the distribution of lithology, stratigraphic marker horizon correlation, subsurface mapping and facies modelling.Based on the results of the data analysis and discussion, it can be interpreted that the Tanjung Formation in the MIR field has a type silisiklastik sandstone lithology (sandstone), shale (shale) and coal (coal) with depositional environment in estuarine area. The results of the analysis of stratigraphic marker is 2 MRS (Maximum Surface Regression), 5 FS (Flooding Surface), 2 MFS (Maximum Flooding Surface) and 1 SB (Sequence Boundary) with sequence stratigraphic unit 2 Lowstand System Track (LST), 2 Transgressive System Track (TST) and Highstand System Track 1 (HST). Direction of sedimentation cycles in Tanjung Formation sequence stratigraphy approach leads to Northwest – South east (NNW - SSE). Facies models are divided into two zones: the ZR1 zone and ZR2 zone, where the zone was conducted to calibrate the rock core data. Based on core analysis Estuary facies rocks have Chanel and Tidal flat on Keywell. According to core data support and electrofasies in the study site, there are 3 facies deposition environmental: Chanel Estuary , Tidal flat and Tidal Bars.

EVOLUSI TEKTONIK DI DAERAH NENAS DAN KEFAMENANU, NUSA TENGGARA TIMUR IMPLIKASINYA TERHADAP POTENSI PERANGKAP (TRAP) HIDROKARBON PADA CEKUNGAN TIMOR BAGIAN BARAT Arif Alfiansyah; Hadi Nugroho; Fahrudin Fahrudin; Joko Wahyudiono
Geological Engineering E-Journal Vol 6, No 1 (2014): Volume 6, Nomor 1, Tahun 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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In Timor island found many indications of hydrocarbons such as oil seeps, gas seeps and mud volcanoes. In the eastern part of the territory there are indications of more oil, while in the western part of the territory more gas indications (Charlton, 2001). It is a challenge for a geologist in particular to uncover all the potential that exists in the Timor Basin.The purpose of this study was to determine the composition of the stratigraphy in the study area, which is developing the geological structure and its relationship with the existing stratigraphy in the study area, the main emphasis is to work towards the western part of Timor Island, Explaining the tectonic evolution of the study area and type of trap hydrocarbons that exist in the study area.The method used in this thesis is a survey method and analysis methods. Methods of geological mapping survey with a description of the characteristics of each formation encountered and measured thick layer of rock that is useful for stratigraphic cross sections, and measurement of structural elements such as bedding plane, joint, faults and folds. Analysis method by analyzing both the geological structure alignment analysis and analysis stereografis.The composition of the regional stratigraphic in research area from old to young is Maubise Formation, Atahoc Formation, Cribas Formation, Niof Formation, Babulu Formation, and Aitutu Formation. Geological structures that developed in the study area at Permian old rocks there are a reverse fault has trending NW-SE, strike slip fault has trending N-S, and normal fault has trending NW-SE, whereas in Triassic old rocks there are a reverse fault has trending NE-SW, strike slip fault has trending NE-SW, and normal fault has trending NE-SW. Look at the similarity of has trending reverse fault and normal fault orientation at Permian age, interpreted that reverse fault is result of reactivation from normal fault plane with same plane orientation. This also applies to Niof Formation, Babulu Formation and Aitutu Formation are Triassic old rocks there are a reverse fault has trending NE-SW and normal fault has trending NE-SW. the similarity of that trending orientation can interpreted as a result from reactivation of that happened at Permian old rocks. The main stress in Permian old rocks is NE-SW, while in Triassic old rocks is E-W. Based on analysis, trap hydrocarbon potential is structural trap with type are anticline and reverse fault

PENENTUAN ZONA PROSPEK RESERVOIR HIDROKARBON PADA TAHAP EKSPLORASI DENGAN ANALSIS PETROFISIKA FORMASI BATURAJA LAPANGAN “IRFA” BLOK SEKAYU CEKUNGAN SUMATERA SELATAN Rizky Septianingrum; Hadi Nugroho; Wahju Krisna Hidajat; Herlina Rachman; Yermia Heriadji
Geological Engineering E-Journal Vol 6, No 2 (2014): Wisuda Periode Juli - Oktober 2014
Publisher : Program Studi Teknik Geologi, Fakultas Teknik, Universitas Diponegoro

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South Sumatera basin is one of the basin area in Indonesia that has considerable hydrocarbon potential, particularly in the field by IRFA well as the research of the physical properties of a reservoir characteristics including type of lithology, shale volume, porosity, permeability and water saturation value which is fundamental to the activities of oil and gas exploration.The purpose of this research was to determine the physical properties of the reservoir that developed in the areas include shale volume (Vsh), porosity (Ф), permeability (K), water saturation (Sw) zone which in turn can be determined that there is the prospect of hydrocarbon reservoir in the reservoir-3 on the well IRFA-1. The method used is descriptive method is a method that is done from multiple libraries. While the analytical methods used are qualitative analysis and quantitative. Qualitative analysis is to conduct research lithology and correlation of 7 wells located in the study area, while for the quantitative analysis was conducted on the calculation of reservoir petrophysical properties among other shale volume, porosity, permeability and water saturation then be determined net pay identified as areas reservoir will know where is hydrocarbon prospects and the prospects for the determination of hydrocarbon reservoir zones in this study is supported by the chromatograph of analysis done by knowing the value of the total gas C1, C2, C3, iC4, nC4 IRFA-1 well.Based on data analysis and discussion of reservoir-3 well IRFA-1 has a value of shale volume average of 22%, porosity 26%, permeability 371 mD, water saturation of 38%. This calculation is obtained by using a cutoff value for the volume of shale reservoirs <50%, effective porosity >9%, water saturation <60%. The results of the calculation of the average value cromatograph C1 / C2 = 4.14 ppm, C1 / C3 = 7.34 ppm, C1 / C4 = 18.46 ppm, C2 / C3 X 10 = 17.8 ppm. From the results of the data analysis and discussion can be interpreted that the reservoir-3 well IRFA-1 at a depth of 4298.3 to 4353 feet of a reservoir zone with oil prospects.

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