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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 4 Documents
 1 
Search results for , issue "Vol 10 No 3 (1987)" : 4 Documents clear
Kapok Seed Oil As Viscosity Index Improved Pallawagau La Puppung
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.10.3.897

Abstract

Production, supply and development of hubricating oils for domestic use are carried out in Indonesia using domestie bate ofls and imported additives. Research on the use of kapok seed oill as a viscosity index improver for lubricating oll is as an effort for supply and development of lubricating oll additive which is produced in the country. Resuls of physical and chemical properties analysis indicate that kapok seed oil can be used Ea viscosity index improver.
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.
WA INFLUENCE OF HYDROCARBON COMPOSITIONS OF THE HYDROCRACKING FEEDSTOCKS ON THE HYDROCRACKED PRODUCTS OF LUBRICANT BASE STOCK AND MIDDLE DISTILLATE 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.10.3.1150

Abstract

An experiment has been carried out to study to influence of hydrocarbon composition of the hydrocracking feedstocks on the hydrocracked products of lubricant base stock and middle distillate with bi-functional catalyst.  The operating conditions are;  temperature: from 400° to 420°C pressure: from 100 kg/cm2 and H2/HC ratio: 1000 Ilt/lt using a Catatest unit, operated with a continuous system.  Experimental data show that the high content of paraffin hydrocarbon in the hydrocracked feedstock tends to increase the viscosity index of lubricant base stock, smoke point of kerosene and diesel index of gas oil products.

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