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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 6 Documents
 1 
Search results for , issue "Vol 25 No 2 (2002)" : 6 Documents clear
Palynology Of The Lower Kalicapung Formation Tlogosari, Central Java Eko Budi Lelono
Scientific Contributions Oil and Gas Vol 25 No 2 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.2.878

Abstract

The palynological investigation focuses on the transition sediment of the Lower Kalipucang Formation which overlies the non-marine lava of the Gabon Formation. Both formations are firmly separated by the unconformity which is indicated by the occurrence of basal conglomerate. The Lower Kalipucang Formation outcrops in a small village called Tlogosari, Central Java. Lithologically, it is characterised by the occurrence of basal conglomerate with the intercalation of thin lignites. This lithology is overlain by 2 meter thick of claystone containing lignite strings and some igneous fragments. The intercalation of thin sandstones, conglomerate and lignites are found within claystone lithology. Four samples from the Lower Kalipucang Formation were selected for laboratory processing. Only two samples collected from the upper part of this formation yield rich palynomorphs. The palynomorph assemblage shows the occurrence of brackish and fresh water floras. Based on the appearance of pollen Florschuetzia meridionalis and F. trilobata, it is predicted that the age of the Lower Kalipucang Formation is Middle Miocene. The high abundance of mangrove taxa (especially in sample number LKP-4) such as Avicenia type, Zonocostites ramonae and Camptostemon indicates a well development of mangrove environment. This assumption is supported by well preservation of large mollusc with excellent ornamentation. This ornamentation must have developed in the environment with low energy such as mangrove.
UPSCALING PERMEABILITY Septi Anggraeni; Harry Hardiman
Scientific Contributions Oil and Gas Vol 25 No 2 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.2.1065

Abstract

In reservoir simulation, the engineer needs a set of permeability values estimated on grid block which are as representative as possible of the true value. However. the sample data is limited to small scale measurement relative to the scale of reservoir simulation. Therefore. we need to upscale the permeability data measurement by averaging permeability on volumes. Prior to obtain the appropriate averaging method, an upscaling experiment was performed. The averaging method at the plug scale can be specified from the probe data and the Hassler cube data, by comparison.
THE ORIGIN OF DOLOMITE IN EARLY CAMBRIANCARBONATES OF YORKE PENINSULA, WESTERN MARGIN OF STANSBURY BASIN, SOUTH AUSTRALIA Maximon Shah Arifin
Scientific Contributions Oil and Gas Vol 25 No 2 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.2.1066

Abstract

The Early Cambrian carbonate sequence in Yorke Peninsula consists of tidal flat lithologies in the lower part (Kulpara Fomation) and lagoonal lithologies with sporadic bioherms (Koolywurtie Member) in the upper part. Dolomitization have been recorded in those carbonates mainly of replacive nature, only small amounts are void-fill cement. Petrographic and stable isotopic analysis have supported the conclusion that dolomitization of the Early Cambrian carbonates in Yorke Peninsula was an ongoing process by hypersaline water followed by a mayor episode of recrystallization during shallow burial diagenesis, where enormous quantity of magnesium required for regional dolomitization is supplied by sea water. The geochemical and tectural modification of the dolomites are the result of a later stage recrystallization event, in shallow burial diagenetic environment by surfacederived meteoric 1 water.
MICROBIAL EOR STUDY TO IMPROVE SWEEP EFFICIENCY IN CALTEX FIELDS PHASE 1 – NUTRIENT SELECTION Sri Kadarwati; M. Udiharto; Noegroho Hadi Hs; Joseph P. Brinkman; Bangun Yulianto
Scientific Contributions Oil and Gas Vol 25 No 2 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.2.1067

Abstract

The objective of this research is to find a cost effective nutrient that will stimulate the growth of in-situ microbes in Caltex Pacific Indonesia (CPI) oil fields to create sufficient biological products to plug high-permeability reservoir thief zones. If successful, injection fluids may be diverted into unswept regions of the reservoir, increasing the sweep efficiency und extending the production life of watered- out oil fields. This paper describes how a wide range of nutrients were researched and tested in the laboratory to achieve the objective. The primary findings of this study show that several primary nutrients were successful at creating bioproducts at high temperature, low salinity, reservoir conditions, and that molasses may be the most cost effective nutrient for all three CPI waterflooded reservoirs tested: Balam South, Bangko, and Minas fields. As a result of this work, laboratory studies were started to see to if the microbial growth created in laboratory test tubes can be recreated within reservoir core plugs to achieve sufficient permeability reduction to justify field trial (s). The core flood process and techniques will be presented in a separate paper.
STUDY ON DEVELOPING APPROPRIATE UNLEADED GASOLINE SPECIFICATION FOR INDONESIA (2000-2010) Rasdinal Ibrahim; Adiwar Adiwar; Mardono Mardono
Scientific Contributions Oil and Gas Vol 25 No 2 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.2.1068

Abstract

Automotive fuels are significant sources of air pollution in most metropolitan areas. Motor gasoline is responsible for emission of carbon monoxide (CO), volatile organic compounds (VOC), nitrogen oxides (NOx), sulfur oxides (SOx) which all have adverse impacts on the environment and public health. In line with the implementation of Blue Sky Program, revision of the current gasoline specification needs be taken to improve the quality of Indonesia's gasoline to meet vehicle engine technology and environmental requirement with the global fuel specification harmonization as formulated in the World Wide Fuel Charter as reference. This study on developing of appropriate unleaded gasoline specification in Indonesia consists of examination of the key properties that influence the emissions, status and trend of current gasoline specification, comparison of Indonesia's gasoline specification with other countries and recommendation of the new unleaded gasoline specification options that match the implementation of Blue Sky Program in Indonesia and the scenario for its implementation.
STUDY OF HAZARDOUS WASTE TREATMENT AND MANAGEMENT FOR THE OIL AND GAS INDUSTRIES M. Mulyono; R. Desrina; Evita H. Legowo
Scientific Contributions Oil and Gas Vol 25 No 2 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.2.1069

Abstract

Study of hazardous waste treatment and management for the oil and gas industries has been conducted by Lemigas Team to observe the existing guidelines and the implementation of the guidelines in hazardous waste management. The study also includes a selection of the government regulation that should be considered in the hazardous waste treatment and management for the oil and gas industries. Results of the study indicate that the oil industry does not conduct treatment processes for all hazardous wastes that are generated. Some of them, especially those of non-specific hazardous wastes are stored in a temporary storage facility and managed off site for treatment or disposal to a commercial hazardous waste facility. The off-site waste management requires the use of a document termed a manifest for tracking its transport on a "cradle-to-grave" basis. The most prominent problem faced by the oil production industries, however, is the vast generation of wastes from production operation activities such as drilling mud, oil contaminated soil, and oil tank sludge and pit sludge. All of these wastes need to be handled properly. This paper presents the results of the study describing the existing guidelines used by the oil and gas industry and its implementation as well as reviewing the government regulation related to hazardous waste management and the technologies that can be applied in mitigating the hazardous wastes generated by the oil and gas industries.

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