cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Wulandari
Contact Email
jurnal.lemigas@esdm.go.id
Phone
+6221-7394422
Journal Mail Official
jurnal.lemigas@esdm.go.id
Editorial Address
Jl. Ciledug Raya Kav. 109, Cipulir, Kebayoran Lama, Jakarta Selatan 12230
Location
Kota adm. jakarta selatan,
Dki jakarta
INDONESIA
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 2 Documents
 1 
Search results for , issue "Vol 5 No 1 (1982)" : 2 Documents clear
Hydroisomerization Of Paraffin Wax Of Sumatran Light Waxy Residue For Lubricating Oil And Fuel Oils Production Using The BI - Functional Catalysts With Various Acid Supports A.S Nasution
Scientific Contributions Oil and Gas Vol 5 No 1 (1982)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.5.1.905

Abstract

Paraffin wax (average mol wt 750-850) of Sumatran Light Waxy Residue was hydroisomerized by bi-functional catalyst with various acidic com- ponents, using a catetest unit, operated at high temperature and pressure with continous system . The reaction products were distilled at at- mospheric pressure to 380°C and the residues subjected to a dewaxing treat ment at - 20°C. Based on this separation the reaction products were regarded as pseudo three component systems the component being lubricating oil, unconverted wax and cracked products. The lubricating oils obtained in the experiments have a-viscosity index of 122- 16S, With M/AI0-SIO2 type catalyst a maximal oil yield of 28,0 per cent wt was obtained with 25 per cent of cracked products. And at 50 percent by wt of feedstock conversion, the smoke point of kerosene and diesel index of gas oil are 34 and 87 mm respectively. The wux contents in the feedstock is an important source for high viscosity index lubricating oil produC tion obtained by hydroisomerization of this wax.
2nd Annual ASCOPE Laboratory Test Correlation Programme on CFR Engine (1981) Bustami Mustafa; E. Jasjfi
Scientific Contributions Oil and Gas Vol 5 No 1 (1982)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.5.1.1168

Abstract

ASCOPE Work Programme for 1981 directed the Technical Committee to conduct the 2nd Annual Laboratory Test Correlation Programme for CFR Engines among petroleum laboratories in the ASCOPE member countries. Member countries taking part in this correlation programme are Indonesia with seven laboratories participating, Malaysia with two laboratories, Thailand and the Philippines with two laboratories each. LEMIGAS Laboratory of Indonesia, as coordinator in this correlation programme, provided the samples to be sent to each participating laboratory. After being tested by the participating laboratories, the test results on these samples were to be sent to PPTMGB "LEMIGAS" in Jakarta for processing, including the determination of the standard deviation. Based on these results, conclusions can be drawn about the deviations of laboratory test results and about outliers to be rejected. For proper analysis, the samples for correlation also require physical and chemical test such as specific gravity, RVP, distillation, and TEL content, in the receiving laboratories to take into account any possible changes in the sample properties which have occured during transportation and storage. abaot w bliy Also important to be observed are ambient and engire operating conditions during the men Jnlog lomt correlation tests. The results of this analysis can then be used as a base for diagnosis of the probable causes of deviations, the occurence of outliers and for recommendations of remedial steps to be taken. The method used for testing the samples is the Bracketing Procedure System, while for rounding the values of the numbers found during the tests the ASA rules for rounding are used. The Grubb's rejection criteria with the use of "T" factors are used in evaluating the possible outliers.

Page 1 of 1 | Total Record : 2

 1 

Filter by Year

1982 1982


Reset
Filter By Issues
All Issue Vol 49 No 1 (2026) Vol 48 No 4 (2025) Vol 48 No 3 (2025) Vol 48 No 2 (2025) Vol 48 No 1 (2025) Vol 47 No 3 (2024) Vol 47 No 2 (2024) Vol 47 No 1 (2024) Vol 46 No 3 (2023) Vol 46 No 2 (2023) Vol 46 No 1 (2023) Vol 45 No 3 (2022) Vol 45 No 2 (2022) Vol 45 No 1 (2022) Vol 44 No 3 (2021) Vol 44 No 2 (2021) Vol 44 No 1 (2021) Vol 43 No 3 (2020) Vol 43 No 2 (2020) Vol 43 No 1 (2020) Vol 42 No 3 (2019) Vol 42 No 2 (2019) Vol 42 No 1 (2019) Vol 41 No 3 (2018) Vol 41 No 2 (2018) Vol 41 No 1 (2018) Vol 40 No 3 (2017) Vol 40 No 2 (2017) Vol 40 No 1 (2017) Vol 39 No 3 (2016) Vol 39 No 2 (2016) Vol 39 No 1 (2016) Vol 38 No 3 (2015) Vol 38 No 2 (2015) Vol 38 No 1 (2015) Vol 37 No 3 (2014) Vol 37 No 2 (2014) Vol 37 No 1 (2014) Vol 36 No 3 (2013) Vol 36 No 2 (2013) Vol 36 No 1 (2013) Vol 35 No 3 (2012) Vol 35 No 2 (2012) Vol 35 No 1 (2012) Vol 34 No 3 (2011) Vol 34 No 2 (2011) Vol 34 No 1 (2011) Vol 33 No 3 (2010) Vol 33 No 2 (2010) Vol 33 No 1 (2010) Vol 32 No 3 (2009) Vol 32 No 2 (2009) Vol 32 No 1 (2009) Vol 31 No 3 (2008) Vol 31 No 2 (2008) Vol 31 No 1 (2008) Vol 30 No 3 (2007) Vol 30 No 2 (2007) Vol 30 No 1 (2007) Vol 29 No 3 (2006) Vol 29 No 2 (2006) Vol 29 No 1 (2006) Vol 28 No 3 (2005) Vol 28 No 2 (2005) Vol 28 No 1 (2005) Vol 27 No 3 (2004) Vol 27 No 2 (2004) Vol 27 No 1 (2004) Vol 26 No 2 (2003) Vol 26 No 1 (2003) Vol 25 No 3 (2002) Vol 25 No 2 (2002) Vol 25 No 1 (2002) Vol 24 No 2 (2001) Vol 24 No 1 (2001) Vol 23 No 3 (2000) Vol 23 No 2 (2000) Vol 23 No 1 (2000) Vol 22 No 2 (1999) Vol 22 No 1 (1999) Vol 21 No 2 (1998) Vol 21 No 1 (1998) Vol 18 No 2 (1995) Vol 18 No 1 (1995) Vol 17 No 1 (1994) Vol 16 No 1 (1993) Vol 15 No 1 (1992) Vol 14 No 2 (1991) Vol 14 No 1 (1991) Vol 13 No 1 (1990) Vol 12 No 1 (1989) Vol 11 No 1 (1988) Vol 10 No 3 (1987) Vol 10 No 2 (1987) Vol 10 No 1 (1987) Vol 9 No 1 (1986) Vol 8 No 2 (1985) Vol 8 No 1 (1985) Vol 7 No 2 (1984) Vol 7 No 1 (1984) Vol 6 No 1 (1983) Vol 5 No 2 (1982) Vol 5 No 1 (1982) More Issue