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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 21 No 2 (1998)" : 4 Documents clear
Carbon Monoxide Axidation Over Pt/Y-Alumina Catalyst Triyono Triyono; Chairil Anwar
Scientific Contributions Oil and Gas Vol 21 No 2 (1998)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.21.2.955

Abstract

Oxidation of CO has been studied on Pt/y-alumina catalyst. The catalyst was produced by impregnating y-alumina with hexachloroplantic acid solution, calcined, oxidized and reduced at the optimum condition. Catalyst was characterized by nitrogen sorption measurement and scanning electron microscope (SEM). By optimization of calcination, oxidation and reduction on the catalyst preparation, a residual serface area of 129.14 m²/gram was obtained. The resulting catalyst has a high activity for the conversion of CO to CO₂.
Hydroconversion Of Heavy Distillate Into Lube Base Stock Using Bi-Functional Catalysts A.S. Nasution; E Jasjfi
Scientific Contributions Oil and Gas Vol 21 No 2 (1998)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.21.2.956

Abstract

Hydroconversion process replaces the furfural stage and dewaxing part of conventional processs of lube base stock production. To study the ability of this hydroconversion process to weed low viscosity index component out of heavy distillate fraction to produce high viscosity index lube base stock,  an experiment has been carried out on the hydroconversion of three feedstock types, I,e,: non-paraffinic vacuum distillate (NPVD), paraffinic vacuum distillate (PVD) and paraffin-wax (WAX), using three bifunctional catalysts having low, medium abd high acidities. The experiment was done at the following operating conditions: temperature from 380° to 420°C, pressure: 100 kg/cm² and H₂/HC ratio: 1000 L/L using a Catatest Unit operated in continuous system.The experimental data shows that at 50% by wt. feedstock conversion, the yields and viscosity index of lube base stock product are 20.7% by wt. and 118; 25.5% by wt. and 136; and 29.5% by wt. and 164 for NPVD, PVD and high acidity bifunctional catalysts, respectively. By conventional process, PVD feedstock produces 10-15% by wt. lube base stock with viscosity index lube 90 to 100.The high viscosity index of lube base stock product, obtained by hydroconversion process, suggest that a part of condensed aromatics is converted into naphthenes, which are then selectivity hydrocracked into single alkyl aromatics by both the metal site and acid site of the bifunctional catalysts. With medium and high acidity bifunctional catalysts, isomerization and cyclization of wax feedstock into isoparaffins and single ring alkyl-naphthene ring of vacuum distillate feedstock into single ring alkyl-aromatic is quite dominant with medium acidity catalyst.
Risk Management And Policy Of B3* Wastes From Natural Gas Industry In Indonesia D. A. Ismukurnianto
Scientific Contributions Oil and Gas Vol 21 No 2 (1998)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.21.2.957

Abstract

The main natural gas industry activities that may produce by-product or wastes are exploration, production, storage, gathering, processing, transmission, distribution or some combination of these. Compressor station, for example, generates various types and quantities of waste, which must be managed responsibly, in a manner that does not threaten human health or the environment.It is helpful to identify types and quantities of waste produced, especially hazardous and toxic material (B3), in order to determine waste disposal options and to prepare management procedures in advance of waste being generated. In order side, regulatory body has provided some regulations regarding hazardous and toxic waste management. Finally, it is important to evaluate the risk of hazardous and toxic wastes in order to provide waste management policy. These topics will be discussed in detail in this paper.
Water Flood Analysis To Predict Additional Of Oil Recovery From Oil Reservoir Herlan Adim
Scientific Contributions Oil and Gas Vol 21 No 2 (1998)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.21.2.958

Abstract

Water injection, the most widespread secondary method of oil recovery, is a pattern flooding when water is injected over the entire oil bearing area of the reservoir.The main reason why this method is so widely used is the high recovery achieved when water is the displacing agent both in the case of a natural water drive and when water injected into reservoir artificially. However, if the flooding operation is carried out carelessly, the result may be entirely negative or wasteful operation. One of the primary objectives of water flood analysis is to predict additional oil recovery obtained by water flooding from oil reservoirs.This paper presents a practical use of water flood method for formation evaluation of reservoir hydrocarbon and provides information that will be of practical value to geologist and engineers involved in the interpretation of water flood data; these then become the reference for an economic projection of the profitability of the waterflood.

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