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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 5 Documents
 1 
Search results for , issue "Vol 28 No 3 (2005)" : 5 Documents clear
Development Of Waterflood Profile Modification Using Brightwater Technology Sugihardjo Sugihardjo
Scientific Contributions Oil and Gas Vol 28 No 3 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.3.871

Abstract

Water flooding, in many mature fields is facing a common problem of low sweep efficiency in the late production period. The breakthrough of injection water is very early when high permeability streaks or thief zones exist in the formation, and resulted in excessive water production. Two kind of technologies commonly are used to modify the permeability streak i.e. MPM (Microbial Profile Modification), and polymer gel with cross linkers material. A new technology which is called Bright Water has been intensively studied. Bright Water is capable of in-depth placement into high permeability streaks in the reservoir. To improve the water flood sweep efficiency, studies of examination a fluid injection design have been evaluated. The objective of this study is to set-up core flooding tests and to determine the effective- ness of the Bright Water to reduce the permeability, and also include optimization of Bright Water formulation, resistance factor determination, and gelling time evaluation.
THE MANAGEMENT OF SPENT CATALYST IN RCC/FCC UNITS IN ASEAN REFINERIES A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol 28 No 3 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.3.1041

Abstract

Catalytic cracking processes convert heavy feed- stock (heavy distillate, residue) into gasoline and light cycle stock for middle distillate components. Due to high impurity of feedstock and limited operating condition of catalyst regeneration, fresh catalyst must be added to replace a portion of spent catalyst continously, to maintain the activity of equilibrium catalyst in the reactor. Spent catalyst must be disposed properly so that it does not cause hazard or environmental concern. A survey was conducted on the management of spent catalyst in RCC/FCC unit in ASEAN refineries as an ASCOPE Technical Committee work programme for 1996. Indonesia was tasked as the Coordinator with the support of Member Countries. The Coordinator for each Member Country is listed in the Table 1. This paper discusses briefly catalytic cracking process, deactivation of cracking catalyst and the management of spent cata- lyst in RCC/FCC units 
THE INFLUENCE OF ISOPROPYL ALCOHOL CONCENTRATION ON THE CHANGE OF PHASE BEHAVIOR IN THE MIXTURE OF OIL - SURFACTANT - ISO PROPYL ALCOHOLFORMATION WATER Nuraini Nuraini
Scientific Contributions Oil and Gas Vol 28 No 3 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.3.1042

Abstract

Surfactant is surface active agent chemical that has two types of properties; lyophobic (like water) and hydrophobic (like oil). One of enhanced oil recovery methods that is used to improve oil recovery factor, is surfactant flooding. Oil and water are two separated phases and have high interfacial tension value (around 30-40 dyne/cm). Addition of surfactant solution at certain concentration into the mixture of oil-surfactant-formation water will change the phase behavior. In this case, four types possibilities of emulsion formed, these are: • Upper phase; Middle phase (microemulsion); Lower phase; Macroemulsion. According to Prince, L.M (Theory and Practice of Microemulsions), change of phase behavior in the oil-surfactant-formation water mixture is influenced by several factors, one of them is concentration of alcohol. The main focus of this research is to study influence of isopropyl alcohol (IPA) concentration on phase behavior in the oil-surfactant-IPA-formation water mixture.Concentration Behavior Oil - Surfactant - Iso
STRATIGRAPHY, TECTONICSAND MAJOR SEQUENCE BOUNDARY DEVELOPMENT IN TERTIARY SEDIMENTS OF CENTRAL SUMATRA BASIN Ukat Sukanta; Mac. Endharto
Scientific Contributions Oil and Gas Vol 28 No 3 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.3.1043

Abstract

According to Satrio and Soejanto (1994), the CPI contract area of Central Sumatra basin has discovered more than 130 fields, and most of these fields are structural traps. The basin is a NW - SE trending elongate depression, which is bounded in the north- west by the Asahan Arc and in the southeast by the Tigapuluh High. To the West, it is bounded by the northwest – southeast trending Barisan Mountains, whereas to the northeast by the Strait of Malacca (Figure 1). The Central Sumatra Basin is based by the Pretertiary basement rocks and has been filled by Eocene up to the Plio-Pleistocene siliciclastic-dominated strata. Based on a three year consulting work for the CPI and discussion with many Earth Scientists of this company, and being supported by much information on the related data from published reports, the senior author has been able to propose scientific contribution on the stratigraphy of the basin and its relationships with tectonism and sea level changes.
ROLE OF CATALYTIC REFORMING PROCESS FOR GASOLINE PRODUCTION IN ASEAN REFINERIES A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol 28 No 3 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.3.1044

Abstract

The crude oils processed in refineries range from sweet crudes, such as Southeast Asian light Crudes, to sour crude, suck as Middle East. Far East, and Persian Gulf. For the period 1992-2005, the average annual demand growth rate for light products (gasoline, kerosene, diesel oil) is higher than residual fuel oil. These data clearly show that the need will continue for converting additional bottom into light products, by both thermal or catalytic conversions, The passage of the Clean Air Act Amendement of 1990 in the USA has forced American refineries to install new facilities to comply with stricter specifications for fuels such as gasoline and diesel oil such as Asia-Pacific, California Air Resources Board (CARB) and European Commission (EC), Various terms in the models address qualities of the gasoline blended such as benzene, total aromatics and olefm contents, RVP, the T90 of distillation range, sulphur content, and oxygenates content45, Motor gasoline is essentially a complex mixture of hydrocarbons distilling about 40°C and 220°C and consisting of compounds generally in the range C, to C2. Gasoline components can be produced by both the distillation of crude oil and the conversion of the crude oil fraction. Catalytic reforming process using bifunctional catalyst converts low octane number heavy naphthas into reformate with a high octane number. Bi-functional catalyst containing metal site (Pt, Pt/Ge) and acid site (A1,O,CI) are generally used. The balance is most important in a bifunctional reforming catalyst, and in fact it has to be different for different duties"l The end point of the naphtha feedstock is usually limited to about 185°C, partially because of increased coke deposition on the catalyst. The reforming cata- lyst exhibits a sensitivity to the conventional impurities of naphtha feed, such as: water (moisture), organic compounds of chlor, nitrogen and sulphur, and organometallic compounds (lead, copper, iron). Sintering of the metal phase becomes effective only beyond 500°C as measured by lowering of the dispersion of platinum atom condition, at the same time coke formation on the catalyst incrases tool71, The life of the catalyst will depend both on its stability and regenerability, expressed either in months or year, or in tonnage treated for unit weight of catalyst. This paper presents briefly composition of gasoline pool, specification of commercial gasoline in Indonesia as well as ASEAN refmeries, the catalyst improvements, catalyst deactivation and catalyst re- generation of the reforming process.

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