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Scientific Contributions Oil and Gas
Published by LEMIGAS
ISSN : 20893361     EISSN : 25410520     DOI : -
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.
Articles 2 Documents
Search results for , issue "Vol 5 No 2 (1982)" : 2 Documents clear
The Miocene/Pliocene Boundary In The North East Java Basin, Indonesia Soemoenar Soeka; Suminta Suminta; Siswoyo Siswoyo
Scientific Contributions Oil and Gas Vol 5 No 2 (1982)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.5.2.906

Abstract

As a part of the LEMIGAS Research Programme on Neogene Epoch Boundaries in the Indonesian Tertiary Basins, in 1981 fiscal year is selected North East Java Basin as an object for research. In this paper we will stress our work on the Miocene/ Pliocene Boundary of the basin based on planktonic Foraminifera. More recently a lot of paleontologists have been working on the Miocene/Pliocene Boundary problem. Bandy (1963) used the first appearance of Sphaeroidinella dihescens as a boundary in the Phillipine, whereas boundary based on the initial apppearance of Globoratalia margaritae. carried out an examination of samples from the Trubi Marl of the Zanclean Sicily and came to the conclusion approximately with middle N18 of this zonal scheme. Bolli ( 1966, revision in 19/0 ) put this stage In 1969, Blow Berggren (1973) proposed the limit of this stage boundary based on the last occurrence of Globoquadrina dehiscens. Kaneps (1974) based on this observation on planktonic Foraminifera of the DSDP cores from the Eastern Equatorial Pacific Ocean came to the conclusion that the Miocene/Pliocene Boundary lies at the base of Globoratalia tumida zone. The base of this zone was placed at the horizon of the initial appearance of Globoratalia tumida while the upper boundary was placed at the horizon of reversal in coiling direction of Pulleniatina primalis from left below to right above. Pringgoprawiro and Baharuddin (1979) on the other hand proposed the initial appearance of Sphaeroidinella immatura as a boundary between these two periods. The purpose of this paper is to study the ranges of some selected important species, and to detect how far these species can be used as a tool for Miocene/Pliocene Boundary in the North East Java Basin. No radiometric age dating has been done in the area.
MICROBIAL CORROSION IN OIL INDUSTRY: A PRELIMINARY SURVEY OF THE PROBLEM NOEGROHO HADI HS
Scientific Contributions Oil and Gas Vol 5 No 2 (1982)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.5.2.1169

Abstract

In 1977 Warren Spring Laboratory was authorised by the Engineering Materials Require ments Board of the Department of Industry to carry out a limited survey on the extent and magnitude of microbial corrosion in British Industry. The need for the survey arose because, despite all the microbial corrosion work which has been carried out in the past and the protection techniques which have been developed, microbial corrosion incidents con- tinue to occur, often causing considerable financial loss to industry. A questionnaire which would enable as much information as possible on microbial corrosion to be obtained from a wide variety of firms and organisations conceined in the manufacture and use of metal equipment. Since microbial corrosion has been most com- monly encountered as a problem with buried ferrous metals, considerable work has been done to develop techniques for assessing soil aggressiveness, Several of the survey questions were therefore directed to determine whether the recommended techniques were being applied, how effective these techniques were and of further experimental work was required. The economics of microbial corrosion protection were another area for which infor- mation was sought since the ultimate aim of a soil aggressiveness assessment is to enable the degree of protection given to a buried structure to be directly related to the measured aggressiveness, Thus unnecessary protection would be avoided.

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