Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Scientific Contributions Oil and Gas
E. Jasjfi
Research and Development Centre for Oil and Gas Technology "LEMIGAS"
Chemical Engineering, Chemistry & Bioengineering Energy

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
ANALYTICAL METHOD FOR THE IDENTIFICATION OF OIL SPILL DISPERSANT COMPOSITION M. Mulyono; R. Desrina; E. Jasjfi
Scientific Contributions Oil and Gas Vol 23 No 3 (2000)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.23.3.1086

Abstract

Chemical dispersants are often used to disperse spilled oils, which threaten to pollute shoreline areas. In Indonesia all dispersants produced or marketed should undergo the toxicity test with regand to certain types of fish to determine the threshold limit, LC-50. The type of surface-active agent (surfactants) and the solvent used in the dispersants, which determine the dispersing quality, might be toxic to the marine species and bacteria.
CURRENT USES AND FUTURE CHALLENGES FOR ZEOLITE IN THE INDONESIAN OIL AND GAS PROCESSING INDUSTRY A.S. Nasution; Chairil Anwar; E. Jasjfi
Scientific Contributions Oil and Gas Vol 22 No 2 (1999)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.22.2.1091

Abstract

Oil and gas industry uses zeolite as an adsorbent to reduce moisture content of natural gas in LNG Plant, and as catalyst to convert the heavy petroleum fractions feeds into light clean fuels in refinery.Low quality crude oil, low residual fuel demand, and an increased demands and spesifications for light products (gasoline, kerosene, and diesel oil) and petrochemical products, future challenges for utilization zeolite as cracking catalyst in refinery are encouraging.
POTENTIALS OF BACILLUS STEAROTHERMOPHILLUS FOR ENHANCED OIL RECOVERY A LABORATORY EXPERIMENT M. Udiharto; S. Kadarwati; E. H. Legowo; M. Rahman; E. Jasjfi
Scientific Contributions Oil and Gas Vol 18 No 1 (1995)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.18.1.1101

Abstract

B. stearothermophillus was isolated from among microbes recovered from a formation water from an oil field in Indonesia, where the temperature was 55°CLaboratory experiment was conducted to measure the growth, and to study the effects of its activity on the physical characteristics of reservoir rock and crude oil in an oil well.
COMPARATIVE STUDY ON THE PROCEDURES FOR REJECTION OF OUTLIERS IN ASCOPE LABORATORY TEST CORRELATION PROGRAMME E. Jasjfi
Scientific Contributions Oil and Gas Vol 14 No 1 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.1.1120

Abstract

Grubbs T-Test has been consistenly used in startistical analysis for rejection of outliers in ASCOPE Laboratory Test Correlation Programme.The present paper compares the effects of using other statistical test, namely Ferguson b2-Test and Dixon r-Test on the rejection of Laboratory test resultsAlthough these methods gave conflicting verdicts on some of the laboratory results, it seems that the use of Grubbs T-Test is quite satisfactory for the purpose of ASCOPE Laboratory Test Correlation Programme.
TRENDS AND DEVELOPMENT OF PETROLEUM FUEL QUALITIES IN INDONESIA E. Jasjfi
Scientific Contributions Oil and Gas Vol 14 No 2 (1991)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.14.2.1122

Abstract

Petroleum fuels must meet the technical requirement of their intended uses. In that sense, the technical description of each type of petroleum fuels in different countries are basically similar.
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 EFFECTS OF FUSEL OIL BLENDING ON GASOLINE FUEL CHARACTERISTICS E. Jasjfi
Scientific Contributions Oil and Gas Vol 10 No 2 (1987)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.10.2.1152

Abstract

Fusel oil, which comprises a mixture of kigher alcohols, has prospective potentialirien for use at a conobrent in gasoline-methanol blends since ir can improve their water tolerance, Thie has been demonatrated in an earlier work by the author.            The present paper presents the reults of a serier of tests made to investigate the effects of funel oil addition to the actual gasoline fuel characterisies The resules indicated that such addition Could remult in improving the gsoline propertles s can be exemined through comparisom with the established specifications.
CARBON DIOXIDE ADSORPTION CAPACITY OF INDONEIAN NATURAL ZEOLITE E. Jasjfi; Edi Janis
Scientific Contributions Oil and Gas Vol 10 No 1 (1987)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.10.1.1155

Abstract

Natural gas is an important commodity for the economy and development of Indonesia. In addition to its riches in petroleum resources, Indonesia is also endowed with other mineral resources, among which is na- tural zeolite.             This paper describes a study made to combine these two resources, the use of zeolite in natural gas processing, specifically for CO, removal by zeolite as solid adsorbent.            The experimental results presented in this paper indicate that this Indonesian natural zeolite has good CO, adsorp tion capacity, although the value is only about one half of that obtained from systhetic zeolite. Both zeolites were shown to follow the Langmuir adsorption iso therms and their parameters were established. These and other relevant data are presented in this paper.
GASOLINE SPECIFICATIONS IN THE ASEAN COUNTRIES E. Jasjfi
Scientific Contributions Oil and Gas Vol 9 No 1 (1986)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.9.1.1157

Abstract

Gasoline is one of the most important petroleum products which is directly used by a large section of the general public. Countries of the Southeast Asia have been cooperating closely in many fields, including the petroleum industry.             In view of the facts, it would be of prime interest to examine and compare the gasoline specifications in the ASEAN countries.             This paper presents the results of the study, based on the official standard specifications in force in five ASEAN countries. The similarities and differences are emphasized, as well as their significance.  
5th ANNUAL ASCOPE LABORATORY TEST CORRELATION PROGAMME ON CFR ENGINE (1983) Bustani Mustafa; E. Jasjfi
Scientific Contributions Oil and Gas Vol 8 No 2 (1985)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.8.2.1162

Abstract

A high precision CFR Engine Laboratory operating according to standard requirement is a must in the oil industry, It is also of very high importance within work of research activities on the use of hydrocarbon fuels. In ASEAN we have the ASCOPE correlation program on CFR engine laboratory to obtain precinion data in the gusoline by CFR test research method.  Member countries taking part in the 5 laboratory test correlation program for CFR engines are Indonesia as coordinator with six participating laboratories, Malaysia, Philippines, Singupore and Thailand with two laboratories each and USA with are laboratory. The 5th correlation program was started by sending sample by the program correlation in Jamuary, 1983 after being tested the participating laboratories, the test renilt were sent to the program coordinator who procured the result for the determination of standard deviation according to precision and statistics.  Based on result, conclusion can be drawn about the deviation of laboratory test results.
Co-Authors A.S. Nasution Bustami Mustafa Bustani Mustafa Chairil Anwar E. H. Legowo Edi Janis Evita H. Legowo M. Mulyono M. Rahman M. Udiharto R. Desrina Rasdinal Ibrahim S. Kadarwati