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INDONESIA
Scientific Contributions Oil and Gas
Published by LEMIGAS
ISSN : 20893361     EISSN : 25410520     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Energy
The Scientific Contributions for Oil and Gas is the official journal of the Testing Center for Oil and Gas LEMIGAS for the dissemination of information on research activities, technology engineering development and laboratory testing in the oil and gas field. Manuscripts in English are accepted from all in any institutions, college and industry oil and gas throughout the country and overseas.
Arjuna Subject : Energi (semua kategori) - Teknologi Bahan Bakar
Articles 619 Documents
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CAPABILITY OF LEMIGAS LABORATORIES IN SUPORTING EOR STUDIES* Rachmat Sudibjo; Herlan Adim
Scientific Contributions Oil and Gas Vol 15 No 1 (1992)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.15.1.1114

Abstract

Eor methods hold the promise of adding to the production levels and reserve base of world’s maturing oil fields. In Indonesia, very few EOR project have been under taken, only few of the EOR methods that have been evaluated in the laboratory and tested in the field.
WELL TEST ANALYSES ON JATIBARANG VOLCANICS USINGG SINGLE WELL MODELLING Thawer. R; Sarginson. M; Syahrial. E
Scientific Contributions Oil and Gas Vol 15 No 1 (1992)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.15.1.1115

Abstract

Well test analyses on the Jatibarang Formation volcanics reservoir in the Jatibarang field were carried out using a numerical simulator with a single radial well model. The volcanics zone is a fractured reservoir with little matrix permeability.
SEPARATION OF UP GOING AND DOWN GOING WAVES IN VSP USING SINGULAR VALUE DECOMPOSITION Suprajitno Munadi; Lasmi Kustiowati; Moh. Bunjamin
Scientific Contributions Oil and Gas Vol 14 No 1 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.1.1118

Abstract

The separation of upgoing and downgoing waves in Vertical Seismic Profiling (VSP) is effectively accomplished using the singular value decomposition method. The VSP data can be decomposed into eigenimages which is directly proportional to the singular value.
APPLICATION OF REMOTE SENSINGTECHNIQUES IN PETROLEUM EXPLORATION : THE INDONESIAN EXPERIENCE B. Situmorang
Scientific Contributions Oil and Gas Vol 14 No 1 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.1.1119

Abstract

Since the seventies, remote sensing data have been widely used in petroleum exploration in Indonesia. These include Landsat. Spot and Radar imageries, apart from the conventional aerial photographs. Examples from Nias Island, East Kalimantan Basin and Irian Jaya, will be presented to show the extensive application of remote sensing techniques in general geological mapping and hydrocarbon exploration.
COMPARATIVE STUDY ON THE PROCEDURES FOR REJECTION OF OUTLIERS IN ASCOPE LABORATORY TEST CORRELATION PROGRAMME E. Jasjfi
Scientific Contributions Oil and Gas Vol 14 No 1 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.1.1120

Abstract

Grubbs T-Test has been consistenly used in startistical analysis for rejection of outliers in ASCOPE Laboratory Test Correlation Programme.The present paper compares the effects of using other statistical test, namely Ferguson b2-Test and Dixon r-Test on the rejection of Laboratory test resultsAlthough these methods gave conflicting verdicts on some of the laboratory results, it seems that the use of Grubbs T-Test is quite satisfactory for the purpose of ASCOPE Laboratory Test Correlation Programme.
SELECTIVE HYDROCRACKING OF HEAVY DISTILLATE TO HIGH VISCOSITY INDEX OF LUBE BASE STOCK USING BI-FUNCIONAL CATALYSTS A.S. Nasution
Scientific Contributions Oil and Gas Vol 14 No 1 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.1.1121

Abstract

Selective hydrocracking of heavy distillate to high viscocity index of lube base stock has been carried out at the operating conditions: temperatures: 380° - 410°C, pressure: 100kg/cm2, H2/HC = 1000 lt/lt with bifunctional catalysts having various acidity using a catasest unit operated with a continuous system.
TRENDS AND DEVELOPMENT OF PETROLEUM FUEL QUALITIES IN INDONESIA E. Jasjfi
Scientific Contributions Oil and Gas Vol 14 No 2 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.2.1122

Abstract

Petroleum fuels must meet the technical requirement of their intended uses. In that sense, the technical description of each type of petroleum fuels in different countries are basically similar.
MECHANISM OF HEXANE DEHYDROCYCLIZATION TO BENZENE USING BI-FUNCTIONAL REFORMING CATALYST Abdul Salim Nasution
Scientific Contributions Oil and Gas Vol 14 No 2 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.2.1123

Abstract

The Mechanism of n. hexane dehydrocyclization reaction to benzene has beenstudied with pure hydrocarbons and synthetic naphtha feedstock at the operating conditions: T = 400° - 520°C PT = 10 – 30 kg/cm2 and H2/HC = 4-10 mole/mole using a Catatest Unit operated in a continuous system. The results show that n, hexadiene has been formed as a mayor source of the intermediate molecule of the methylcycloamil ion, an optimum metal site activity was observed for a given acid-site of bi-functional reforming catalyst and – 1 (minus one) of the total reaction order of n. hexane dehydrocyclization to benzene.
THE EFFECT OF SULFUR – CONTAINING COMPOUNDS ON THE STABILITY OF DIESEL FUELS Zuhdan Fathoni. A; Batts. B. D; Sprecher. R. F; Veloski. G
Scientific Contributions Oil and Gas Vol 14 No 2 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.2.1124

Abstract

A high-resolution low-voltage mass spectrometric study has been carried out on the sulfur-containing fractions of fresh diesel fuel and on samples aged at 43°C in borosilicate bootles (ASTM D 4625 test) for periods of 6.5, 13, 19,5 and 26 weeks, and at 80°C for periods of 0.5, 1, 1.5,  2, 3, and 4 weeks. Homologous series of benze-and di benzothiophenes are the principal sulphur-containing compounds were detected. The concentrations of all species present with aging were monitored and the role of each compound in the gum-forming process assessed.
THE USE OF COAL AS FUEL FOR CEMENT MANUFACTURING AT PT. SEMEN GRESIK Sumarwanto Sumarwanto
Scientific Contributions Oil and Gas Vol 14 No 2 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.2.1125

Abstract

The conversion of fuel type, from oil to coal has considerable consequence as coal has very different combustion characteristics from oil. As the price of coalnis much lower, the process is viable.The use of coal as fuel in the cement industry requires more effort in technological treatment, such as: installationof the grinding plant, modification of the existing equipment, and the monitoring and continuous adjusting the blend. As the “ash” in the coal used for firing will combine with the raw mix during burning and thus causes a quite considerable change in the composition of the clinker. The combination of different blends of coal with different ash contents has to be carefully monitored to ensure clinker quality.

Page 42 of 62 | Total Record : 619

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