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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 8 No 1 (1985)" : 4 Documents clear
A Method For Generating Plane Wave And Zero-Offet Vsp Synthetic Seismograms Suprajitno Munadi
Scientific Contributions Oil and Gas Vol 8 No 1 (1985)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.8.1.900

Abstract

Synthetic Vertical Seismic Profiles (VSP) seianograms are a useful aid to the interpretation of VSP re- conds, Plane wave VSP syntherics multiples and mode conversions can be computed rapldly n the frequency domain using a new recursive formulation. The method urilises the concept of "renultanz" phase related reflection and tranamission coefficients for a layer atack. High frequerncy signals can be handled with relative euse. The ability to control the order of the multiple avolds wraparound problems with the discrete Fourier transform. Several examples are used to lhustrate the method with relewance to seismic exploration.
GENERATION AND MATURATION OF HYDROCARBONS IN CEPU AREA, CENTRAL JAVA B. Situmorang; Ludin Tambunan
Scientific Contributions Oil and Gas Vol 8 No 1 (1985)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.8.1.1163

Abstract

Production from the Cepu area occurs from the Tuban and Kawengan Formations. Studies of organie richness and thermal maturity of thirty eight comventional core sanples from four wells penetrating the units by use of Rock-esal pyrolysis method reveal that a high total organic content (>0.30%) occurs in part of the Tuban Formation whereas a low total organie content (0.170.07%) is observed in the Kawengan Formation. Thermal maturity range is immature to maature with T-max ranging from 339°C to 435°C with the mature stage being confined to the Tuban Formation. The main kerogen type is structured kerogen (type III), with limited occurrence of unstructured kerogen (type II).Those results muggest that generution of gas occurred probably in the Tuban Fomation, vertically mi- grated and trapped at relatively shallow depths. It also implies that the more mature source-beds with marine kerogen could be found in the deeper sedimentary 
CONVERSION OF NORMAL HEXANE AND METHYLCYCLOPENTANE INTO BENZENE BY USING REFORMING CATALYST A.S. Nasution; E. Jasjfi
Scientific Contributions Oil and Gas Vol 8 No 1 (1985)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.8.1.1164

Abstract

As the significant amount of paraffins and naphthenes in the reforming feedstock, the conversion of these hydrocarbons to aromatic in the catalytic reforming process thus plays an important role. An experiment has been carried out to study the reaction rate of normal hexane and methylcyclopentane into benzene by using reforming catalyst
1982 4th ASCOPE LABORATORIES TEST CORRELATION PROGRAMME ON C.F.R. ENGINE Bustani Mustafa; E. Jasjfi
Scientific Contributions Oil and Gas Vol 8 No 1 (1985)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.8.1.1165

Abstract

Member countries taking part in this correlation programme are Indonesia as coordinator with seven laboratories participating.

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