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Jurnal Ilmiah MTG
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 19790090     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science
Jurnal Ilmiah Kebumian MTG (JMTG) is an Indonesian scientific journal published by the Geological Engineering Department, Faculty of Mineral and Technology, UPN "Veteran" Yogyakarta. The journal receives Indonesian or English articles. Those articles are selected and reviewed by our professional editors and peer reviewers. The published article in JMTG covers all geoscience and technology fields including Geology, Geophysics, Petroleum, Mining,Geography and geo-environment. The subject covers a variety of topics including : geodynamics, sedimentology and stratigraphy, volcanology, engineering geology, environmental geology, hydrogeology, geo-hazard and mitigation, mineral resources, energy resources, medical geology, geo-archaeology, applied geophysics and geodesy.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 8 Documents
 1 
Search results for , issue "Vol 2, No 1 (2009)" : 8 Documents clear
PENDEKATAN TERPADU DALAM PENGELOLAAN DAN PEREMAJAAN LAPANGAN MINYAK TUA Muhammad Asfamudi
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

Makalah ini menyajikan pendekatan menyeluruh (holistic approach) untuk pengelolaan dan peremajaan lapangan-lapangan minyak yang sudah berumur (brown field). Keberhasilan dari program ini hanya bisa dicapai melalui berbagai kegiatan yang dilaksanakan dalam suatu pendekatan yang terintegrasi (menyeluruh) termasuk pengembangan, optimasi produksi dan penerapan operasi terbaik. Kegiatan ini dilakukan oleh suatu tim terpadu yang meliputi GGRE (geologi,geofisika dan teknik reservoir), Drilling, teknik Produksi, fasilitas produksi permukaan dan teknik operasi melalui keunggulan teknis, inovasi dan kerjasama tim untuk mencapai tujuan bersama yang diinginkan. Hasil akhir yang diharapkan adalah agar bisa mengoptimalkan produksi minyak dan memaksimalkan arus kas melalui pelaksanaan eksploitasi yang terpadu; mulai dari bawah permukaan (subsurface), sumur produksi dan fasilitas permukaan. Untuk mencapai keberhasilan yang diharapkan, dalam pelaksanaannya diperlukan penerapan teknologi mutakhir dan teknik-teknik yang baru.Adapun strategi kunci untuk pengelolaan dan peremajaan lapangan minyak tua yang dibahas dalam makalah ini diantaranya:1. Optimasi subsurface dengan secara terus menerus meningkatkan dan memperbaharui pemahaman tentang reservoir yang ada yang menyangkut geofisika, pemetaan geologi yang baru atau urutan stratigrafi, penghitungan reserves baik secara analisa “decline curve” maupun volumetrik, simulasi reservoir dan material balance untuk mengidentifikasi adanya hidrokarbon yang ketinggalan (bypass hydrocarbon), khususnya dilokasi yang secara struktur relative tinggi atau yang umum disebut lokasi attic.2. Optimasi sumur dengan mengidentifikasi potensi yang ada untuk re-completions, tambahan perforasi, pindah zona produksi, water shut off, dan perbaikan integritas dari tubing.3. Optimasi sumur dan falilitas produksi permukaan dengan menggunakan jaringan pemodelan terintegrasi atau terpadu baik komponen-komponen bawah permukaan maupun komponen permukaan yang terdiri dari sumur, artificial liftt, pipa-pipa produksi, separator dan kompresor dalam lingkaran tertutup (close loop), termasuk juga memperhitungkan kendala-kendala yang ada dari masing-masing komponen.
STRUKTUR GEOLOGI DAN SEDIMENTASI BATUBARA FORMASI BERAU Achmad Rodhi; Basuki Rahmad
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

Perkembangan Sub-Cekungan Batubara Berau selama Tersier di Kalimantan Timur berada di continental plate margin dalam suatu sistem passive margin, berhubungan dengan regangan (rifting) Selat Makasar. Formasi Berau merupakan formasi pembawa batubara di Sub-Cekungan Berau yang berumur Miosen Tengah. Proses pengendapan batubara Formasi Berau di lingkungan delta melalui sisi flexure bidang sesar normal halfgraben berupa sliding gravity.Pengaruh struktur geologi terhadap lapisan batubara baik vertikal maupun lateral secara langsung berpengaruh terhadap ketebalan lapisan batubara, kualitas dan kelayakan penambangannya. Baik dalam skala besar maupun kecil khususnya karakter internal dan eksternal susunan lapisan batubara atau sedimen pengapitnya. Karakter struktur endapan batubara dapat untuk memecahkan permasalahan korelasi stratigrafi, perhitungan cadangan / sumber daya batubara dan sebaran kualitas batubara sebelum dilakukan rancangan penambangan. Pertimbangan struktur geologi tersebut untuk mengetahui pola sebaran batubara dan sejauh mana pengaruh sebaran batubaranya. Tulisan ini disusun selama penulis mengikuti kegiatan eksplorasi di Binungan Blok 1 – 4, dan pengamatan singkapan di Binungan Blok 1 - 4 PIT K, dan Sambarata PIT Gaharu.
PENENTUAN TERAS PANTAI PURBA BERDASARKAN POLA PENYEBARAN BIJIH TIMAH DI PULAU BANGKA Herry Sulistiyo; Heru Sigit Purwanto
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

Exploration and exploitation of tin has been conducted in Bangka Island for over a century. Meanwhile the exploration technology of tin ore has remained stagnant. In the last 10 years there has not been any significant new finding in the filed of tin placer exploration technology. Implementation of “valley hunting” concept is no longer relevant in finding new resources inland as well as offshore. This is evident by the decreasing success ratio results in drilling explorations conducted.Tin ore is categorized as heavy mineral and is economically known as Cassiterite (SnO2) having a density between 6.7-7.1 and hardness of 7 on the Mohs scale. With its high resistance to abrasion and other physical properties, this mineral is often used as characteristic of a depositional phase of an area.The above characteristics have encouraged the writer to study the deposition pattern of tin ore by utilizing bore exploration results and attempt to establish a correlation using the Sea Level Changes theory in an effort to better understand how changes in sea level has influenced the deposition pattern of tin ore. By establishing a relation between changes in sea level and deposition of tin ore, the writer hopes to trace the historical shorelines that may provide indication of a secondary deposition of tin ore.
PERDAGANGAN BILATERAL ANTARA INDONESIA DENGAN NEGARA-NEGARA PATNER DAGANG UTAMA DENGAN MENGGUNAKAN MODEL GRAVITASI Sarwoko Sarwoko
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

This paper is made to provide a theoretical justification for using the gravity model in the analysis of bilateral trade and apply the generalized gravity model to analyse the Indonesia’s trade(non-oil and gas) with its main trading partners (twelve Countries) using the pooled data estimation technique. In the model, the bilateral trade is linear function of economic size of the country (GDP), GDP per capita, and geographical distance between recipient export countries and export country(Indonesia).The result show that the Indonesia’s trade (total trade or export, respectively) are positively determined by the the size of economies, GDP per capita of the partners and negatively determined by geographical distance between Indonesia and its the main trading patners. The GDP and GDP per capita of Indonesia has no effect on the Indonesia’s trade, even negative coefficients. It may be because an increase of Indonesian income is to spend to domestic products so that reduce Indonesia’s export. However, most variables of standardized gravity model were statistically significant on Indonesia’s trade.
MODEL FASIES KARBONAT FORMASI BATURAJA, LAPANGAN DANENDRA, CEKUNGAN SUMATRA SELATAN Triana Susilowati; Suyoto Suyoto
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

The Early Miocene Carbonate Rock is an important rock reservoir in Indonesia. South Sumatra Basin has several reservoir carbonate which still productive. Danendra Field is one of carbonate rock case studies which can be identified from well and seismic data and then occasionally build-ups and mounds of reefal. Facies carbonate subsurface analysis were done by using seismic data of 7 profiles, 10 well data and one biostratigraphy of one well. The research methodology applied in this research is interpretation of sedimentation, manual correlation, and subsurface mapping. Biostratigraphicaly Baturaja Formation was sedimentated during Early Miocene. Four facies have been identified at Danendra Field, namely a facies shelf characterized by packstone texture, a facies shelf edge / core reef by the present of boundstone texture, a facies lagoon with mudstone-wackstone texture and finally a tidal flat facies demonstrates the grainstone-packstone texture. Stratigraphicaly, Baturaja carbonate can be subdivided into five cycles, the cycles bounded by conformity, except the fourth cycle bounded by disconformity due to the erosion. The process of the first cycle is a sedimentation toward marine and then progradational and retrogradational processes at the second cycle is can be recognized by progradational sedimentation processes, the third cycle a retrogradational process can be identified, and eventually the fourth cycle illustrated by agradational and retrogradational. Sedimentation processes to land ward and finally the fifth cycle characterized by progradational process. Sedimentation environment of Baturaja carbonate was sedimented marine back arc basin due to sea level changing relatively. Age of Baturaja carbonate is Early to Middle Miocene. The Caliche can be found as a result of weathering of Baturaja carbonate diagenetic process. The moldic and vuggy are formed by dissolve process, all diagenetic processes occurred in vadose environment.The most appropriate Baturaja carbonate facies model is an isolated platform with the model of rimmed shelf accretionary.
POTENSI GAS METHANE BATUBARA DI DAERAH KELAI, KABUPATEN BERAU, KALIMANTAN TIMUR Sugeng Raharjo
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

A geological research was performed in the Berau Basin, to provide a better understanding on the potential and resources of coalbed methane (CBM) in Berau Regency, East Kalimantan Province, particularly in the Kelai Coalfield. Field observation conducted in the coalfield, shows that the banded to bright banded . Geochemical analysis shows the range of volatile matter content is from 35,17 – 40,11 %, total sulfur from 0,15 – 0,33 %, ash varies between 2,98 – 8,98 %, and fixed carbon from 39,29 – 40,34 %. Based on average of vitrinite reflectance 0,44 – 0,46 ,the coal rank of Kelai is sub-bituminous B . The Methane gas is resulted coming from biogenic process. The fairly well cleated Kelai coal shows cleat orientations trending North East – South West and perpendicular to nearly oblique to the Kelai syncline axis. An in-situ coal gas calculation tends to indicate a low to moderate methane content level, with a value of 4,40 m3/ton – 5,02 m3/t. Coal gas methane resources is 40,31 BCF.Key Words : Vitrinite reflectance, Cleat, Coalbed methane
PELAKSANAAN MANAJEMEN SUMBERDAYA AIRTANAH METODE SUMUR RESAPAN UNTUK KONSERVASI AIRTANAH PADA AKIFER DANGKAL (SHALLOW AQUIFER) DI WILAYAH DAERAH KHUSUS IBUKOTA JAKARTA Bambang Sutedjo HS; Isrofah Isnaeni Nugro
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Magister Teknik Geologi Program Pascasarjana UPN ”Veteran” Yogyakarta

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Abstract

Development of physical build progress at DKI Jakarta area is increase pass by increase all the sector to make changes fungtion of landform like than forest fungtion, farms fungtion make real estate area, hotels and industries area. And than recharge area to decrease that is all, maked to changes of hydrology cycle is that decrease water rainfall to infiltrated to increase of runoff water.Hydrology and some factor to affected groundwater static water level at the shallow aquifer and value of infiltration capacity, and rainfall at The DKI Jakarta area, to make total artificial recharge to be needed of conservation methode at shallow aquifer. Lower plain of Jakarta Coastal added at North part of West Java, with has spread from West part of Java to East following North Coastal from West Java until Cirebon City, with wide plus minus 40 Km. In the regional North Coatal plain added with some high area and sub – basin. Jakarta area is a part sedimentation sub – basin and they call of Ciputat sub – basin, the West part this basin bodered by Tangerang High, at the East part by Rengasdengklok High and at the South part gradational to Bogor Antikinorium.Generally of DKI Jakarta area has to investigation by Soekardi (1985(, Nippon Koei et. Al (Cisadane River Basin Development Feassibility / CRBDFS, 1987), with to make differeanted of Jakarta Groundwater Basin to four part that is Coastal area are North of Tangerang – Jakarta – Bekasi, , Terraces area at the central art basin, the Tertiary bedrock with small production and volcano slope area of Salak and Pangrango. Thickness of Quartenary sediment in the Central Basin to interpretative than 250 meters until 300 meters, and less thickness to South West – South – South East from Jakarta about 25 meters to 50 meters (Warsito, 1985), because closed by contack with Tertisru sediments.From the analysis are finally of infiltration capacity (after balanced point) at the DKI Jakarta area is variatiun. Finally of infiltration capacity is lower value (0,01 Cm/ minutes) they are at the location two, three, four, and the higher (1,98 Cm / minutes) at the location 71. Perbandingan of smaller value and higher value is 198. In the geography position higher value at the South part, and smaller value at the North part.
POTRET PAD DAN RELEVANSINYA TERHADAP KEMANDIRIAN DAERAH Nurul Maulidhini, ST
Jurnal Ilmiah MTG Vol 2, No 1 (2009)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

Filosofi otonomi daerah adalah mewujudkan kemandirian daerah di segala segi kehidupan, yang diukur melalui elemen Pendapatan Asli Daerah (PAD). Di harapkan dengan otonomi, semua daerah di Indonesia mampu melaksanakan semua urusan pemerintahan dan pembangunan dengan bertumpu pada Pendapatan Asli Daerah (PAD) yang di milikinya. Dengan melihat realita pencapaian PAD di hampir semua daerah di Indonesia, tujuan mulia otonomi tersebut bagaikan jauh panggang daripada api. Bukan kemandirian yang ada justru tingkat ketergantunagn terhadap pusat yang semakin besar

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