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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 5 Documents
 1 
Search results for , issue "Vol 12 No 1 (1989)" : 5 Documents clear
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

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