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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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VELOCITY ANALYSIS USING N-TH ROOT STACK Suprajitno Munadi; Pambudi Pambudi
Scientific Contributions Oil and Gas Vol 12 No 1 (1989)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.12.1.1138

Abstract

The estimation of seicmic wave velocity in the subsurface is one of the most important process in seismic data processing. The result is very crucial for the conversion af seismic data fromtime section into depth section.            The N-th Root Stack which has not been widely used in the industry in fact a powerful method for estimating seismic wave velocity from seicmic record. The method attenuates the background/random noise effectiviely which facilitates tre fitting of the velocity spectrum can be done anccurately. In addition, the noise is also effectivdy suppressed during the CDP stackins, yielding the clear inrim i doking amplitude            Synthetic records have been used to demonstrate the effectiveness of the N-th Root Stack Comparison with the Delay and Sum method also demonstrate the superiority of the N-th Root Stack.
CRUSTAL STRUCTURE OF THE MAKASSAR BASINAS INTERPRETED FROM GRAVITY ANOMALIES : IMPLICATIONS FOR BASIN ORIGIN AND EVOLUTION Dr. B. Situmorang
Scientific Contributions Oil and Gas Vol 12 No 1 (1989)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.12.1.1139

Abstract

The gross enistal structure of the Makassar basin has been interpreted from gravity anomalies in confunction with bore hole information and seismic reflection data, Considerubly attenuated conrinental crust appears to underline the basin which reflect a single episode of continental rifring, that has been active in the area during Eocene. Lower Miocene times. The implication of that interpretation for tectonic model are discussed and the overall evolution of the basin from  Middle Jurassic onward proposed.
THE EFFECTS OF MTBE BLENDING ON V/L RATIO OF INDONESIAN PREMIUM GASOLINE E. Jasjfi; Rasdinal Ibrahim
Scientific Contributions Oil and Gas Vol 12 No 1 (1989)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.12.1.1140

Abstract

            In preparation for possible future scarcity of lead alkylate as well as due to environmental consideration in the country, studies are being conducted in Indonesia on the late of Oxygenated Organic compounds as octane boosting components. Methyl ter-butyl ether (MTBE) has received a great deal of attention on account of its relatively better characteristic in comparison with other oxygenates.            Since the use of MTBE affects the front-end volatility of gasoline, it is decmed interesting to present in this paper the results of a study on the effects of this compound on the vapour-liquid ratio of typical Indonesian premium gasoline. Although V/L ratio has not been an item in Indonesia gasoline specification, it is nevertheless a good measure of the vapour lock tendency of the fuel.
THE EFFECT OF BLENDING OF MTBE IN GASOLINE ON REDUCING LEAD CONTENT Bustani Mustafa
Scientific Contributions Oil and Gas Vol 12 No 1 (1989)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.12.1.1141

Abstract

There are two basic incentives in blending MTBE in gasoline for a country like Indonesia , te. To improve the octane quality and to reduce the lead content in gasoline. Changes in physical and chemical properties of gasoline will also occur, accompanying the improvement of the octane number. The blends used in this study were made in four concentrations, viz 3, 6, 10 and 15 volume percent MTBE in unleaded gasoline. The test results were compared to the indonesian specification of premium gasoline.
HYDRODESULFURIZATION OF CRUDE OIL FRACTIONS USING Co-Mo/Al2O, CATALYST A.S. Nasution
Scientific Contributions Oil and Gas Vol 12 No 1 (1989)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.12.1.1142

Abstract

Kinetic of hydrodesulfurization reaction is studied for crude oil fractions: Vacuum distillate, deasphalted oil, reduced crude oil and vacuum residue
RESPONSES OF GASOLINES TO METHANOL/TBA Maizar Rahman; Widjoseno Kaslan; Atung Kontawa; Retno Ambarwati
Scientific Contributions Oil and Gas Vol 11 No 1 (1988)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.11.1.1143

Abstract

Low level alcohol-gasoline blends with normally under 10 vol% of alcohols are intended for use in the existing curs. Because the alcohols have differents properties than hydrocarbon components, their impact on critical gasoline properties have to be understood. This article discussed the research results on the properties of MEOH TBA (50/50) gasoline mixture at different alcohol levels using base fuels from different local refineries.
CATALYTIC REFORMING OF PURE HYDROCARBONS AND NAPHTHA USING MONO AND BI-METALLIC REFORMING CATALYSTS A.S. Nasution
Scientific Contributions Oil and Gas Vol 11 No 1 (1988)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.11.1.1146

Abstract

The catalytic role of mono and bi-metallic of reforming catalysts is studied for the conversion of pure hydrocarbons: Le n, hexane, n. heptane, n, octane, methylcyclopentanÄ™, cyclohexane and nephtha in the reformning reaction
6th ANNUAL ASCOPE LABORATORY TEST CORRELATION Bustani Mustafa
Scientific Contributions Oil and Gas Vol 11 No 1 (1988)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.11.1.1147

Abstract

In ASEAN we have the ASCOPE correlation programme on CFR engine laboratory to obtain precision data in the gasoline by CFR test research method. Member countries taking part in the 6th Laboratory test correlation program for CFR engine are Indonesia as coordinator with seven laboratories participating, Malaysia with one laboratory, Philippines and Thailand with two laboratories each, Singapore and USA with one laboratory each.
SEDIMENT COMPACTION AND ITS INFLUENCE ON BASEMENT SUBSIDENCE Dr. B. Situmorang
Scientific Contributions Oil and Gas Vol 10 No 3 (1987)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.10.3.1148

Abstract

Compaction of claystones-shales and limestones penetrated by well TT-1 and TT-2 in the western margin of the South Makassar Basin (SMB) has been evaluated. Each type of lithology exhibits specific porosity-depth relationship which is characterized by an exponential curve. In the study area the relationships are : = 69.e0.000391 for claystones-shales and o 59.e-0.000731 for limestones, where o is the porosity (%) and z is the depth below the top of the sediments.            Those relationships facilitate decompaction of the sediments and hence restoration of their original thick-. nesses. This study indicates that the thicknesses of the sediments have been significantly reduced by compaction. It is evident that basement subsidence during Miocene times should be increased by 100 to 308 m if cotrected for compaction.            Understanding the (basement) subsidence is an important aspect of basin analysis as it facilitates the calcu- lation of the amount of extension from which the formation of sedimentary basin can be modelled.
COOPERATIVE DETERMINATION OF OCTANE REQUIREMENT FOR CAR POPULATIONS IN ASEAN COUNTRIES A.S. Nasution
Scientific Contributions Oil and Gas Vol 10 No 3 (1987)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.10.3.1149

Abstract

The supply of motor gasoline at the correct octane level is of utmost importance to every country since it bears economic and technical consequences in the cost of energy supply and in the maintenance and replacement costs of engines.  The determination of the actual octane requirement of the existing car population, on the other hand, is a tedious an costly activity.  Better results and less cost could be incurred through a cooperative approach by several countries.  The paper describes the significance of octane requirement, its method of measurement, and presents the results for Indonesia.  Based on this experience a strong recommendation is made for a cooperative determination of octane requirement in the ASEAN region.

Page 44 of 62 | Total Record : 619

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