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 6 Documents
 1 
Search results for , issue "Vol 28 No 1 (2005)" : 6 Documents clear
Selective Hydrocracking Of Heavy Distillate To High Viscosity Index Lube Base Stock By Using Bi-Functional Catalysts A.S Nasution
Scientific Contributions Oil and Gas Vol 28 No 1 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.1.869

Abstract

Hydroprocessing is the catalytic reaction of hydrogen with petroleum or other hydrocarbon materials. It may be carried out for a variety of objectives, including: saturation of olefins or aromaties, molecular rearrangement, or removal of impurity (1).Selective hydrocracking is one of this hydroprocessing to convert higherboiling distillate to lube base stock using a bi-functional catalyst containing both acid site and metal site. Those two active sites of bi-functional catalyst should promote the correct combination of hydrogenation, isomerization and limited hydrocracking function, resulting in the maximum yield of product in the lube oil range (2). The kinetics of this selective hydrocracking greatly depends on the operating conditions: such as feedstock composition, type of catalyst, temperature, pressure, hydrogen to hydrocarbon ratio, and space velocity (6).The versatility of the hydroconversion process with respect to the variety of feedstock are case to study: i.e. the feasibility of the hydroconversion of obtaining lube base stock from heavy distillate.In order to gain more information, an experiment has been carried out to study the selective hydrocracking of vacuum distillate (paraffinic and non paraffinic) by using bifunctional catalysts with various acidity at the following operating conditions: temperature: from 380 to 410 ° C, pressure: 100 kg/cm2 and hydrogen to hydrocarbon ratio: 1000 l/lt. A catatest unit operated in a continuous system was used in this experiment.Gas and liquid product samples were taken from gas and liquid samples, respectively. Liquid product was fractionated to get the following cuts: IBP-380°C and>380°C with 30 theoretical plate fractionator, operating at 4/1 reflux ratio. The >380°C bottom product was treated by dewaxing, using methylisobutyl ketone as a solvent to obtain the lube base stock and wax.
ENVIRONMENTAL MANAGEMENT AND MONITORING EFFORTS (UKL-UPL) FOR OIL AND GAS SECTOR R. Desrina
Scientific Contributions Oil and Gas Vol 28 No 1 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.1.1033

Abstract

Environmental monitoring is an integrated activity of the environmental management in general. Normally, any activity or industry has a written environmental management program called Environmental Management Plan or Rencana Pengelolaan Lingkungan (RKL). This document that has to be legalized or approved by the government describes an environmental management program that shall be implemented by the industry following the establishment of a project. Eventually, success of the RKL implementation can be monitored through environmental monitoring program that has been described in a document defined as Environmental Monitoring Plan or Rencana Pemantauan Lingkungan (RPL). Both RKL and RPL are the environmental management system planning documents that are established following the environmental impact assessment (EIA) AMDAL (Analisis Mengenai Dampak Lingkungan) study for a new project. Regulation regarding with the compulsory for conducting AMDAL is defined in the Government Regulation (Peraturan Pemerintah, PP) No. 29/1986, which is then revised by PP No. 51/1993, and finally by PP. No. 27/1999. Many questions are launched by the oil and gas industries in Indonesia, since these industries have been started their activity long before the AMDAL regulation being put into effect. Moreover, the recent ministerial decree" (Ministerial Decree of Environment No. 17/ 2001) describing the scale limit of the project that has to be preceded by AMDAL study has added confusion to the oil and gas industries. This is not surprising since many of the contracting parties for oil and gas industries in Indonesia have handed over their concession area of oil and gas fields to other parties. The new contracting parties have some difficulties in interpreting the regulations, especially when they intend to develop their contracting area. Shall they conduct EIA/AMDAL study or just Environmental Management and Monitoring Ef forts (Upaya Pengelolaan Lingkungan dan Upaya Pemantauan Lingkungan, UKL-UPL) before implementing the activities? In order to give information especially to the new contracting companies of oil and gas exploration and production those who have bought the concession from the previous companies, the author eager to write this paper describing environmental study that shall be conducted prior the implementation of a new project. Mechanism for requesting a government permit is also included in this paper focusing on upstream activity.
MEASUREMENT OF PHYSICAL ROCK PROPERTIES AND SELECTION OF IDENTIFIED CORE PLUGS FOR INJECTIVITY AND BLOCKING TESS Nuraini Nuraini
Scientific Contributions Oil and Gas Vol 28 No 1 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.1.1034

Abstract

An oil field on the island of Sumatra in Indonesia has excess water production problem. Its watercuts are greater than 90 %. Excess water production is not only linked to poor sweep efficiency, but also causes many problems in oil industry, such as scaling, corrosion, cost of oil water treatment and cost of water disposal, and in effective hydrocarbon mobility. Optimizing oil production often requires considerable time, effort and challenge. Chemical injection (e.g. BW Polymer) is a method proposed to solve the current problem in the oil field. Hopefully, the excess water production will be blocked effectively by using chemical injection method in order to obtain maximum productivity and recovery. This paper is especially focused on measurement of physical rock properties, identification and selection of core plugs for injectivity and blocking test study
DETERMINATION OF OIL RECOVERY FACTOR BY USING WATER INJECTION-LABORATORY TEST METHOD Tjuwati Makmur
Scientific Contributions Oil and Gas Vol 28 No 1 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.1.1035

Abstract

Oil production limit that is usually followed by decrease of oil productivity in old fields is a major problem and can't be avoided. This case happened when cumulative oil production has approached primary recovery method. Decrease of the action of native reservoir energy is followed by drastically increase of production of water (saturation almost 100 %). In relation to this, a method is needed to obtain the additional oil recovery. Water injection method is one of the solutions to solve oil production problem that happened in old fields. It is expected that by using water injection method, productivity and oil recovery in old fields can be improved. Water that is used as the fluid injected into reservoir to improve oil recovery is sea water. How far oil recovery can be improved by using water injection method, is determined by a laboratory research. Before carrying out water injection laboratory test; one has to know what the main points that play important role in determining the optimal oil recovery by water injection method. These are: firstly, reservoir data, secondly, formation water and sea water analysis, thirdly, determination of physical fluid and rock properties, next, the displacement of water injection process to obtain the additional oil recovery and standard operational procedure. The main focus of this paper is "Determination of Oil Recovery Factor By Using Water Injection-Laboratory Test Method ". Hopefully, the contents of this paper give extremely valuable and useful information not only for LEMIGAS as Research and Development Centre for Oil and Gas Technology, but also for the oil industry or the Department of Petroleum Engineering of the universities in Indonesia.
THE USE OF BIO-MOLECULAR SUBSTANCE OF MARINE BIOTA AS AN ALTERNATIVE EARLY INDICATOR OF OIL POLLUTED ENVIRONMENT: A NEW APPROACH FOR MONITORING CONSIDERATION M.S. Wibisono
Scientific Contributions Oil and Gas Vol 28 No 1 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.1.1036

Abstract

Oil enters the marine environment from various sources, for example from the accidental and intentional release of petroleum wastes during the production, transportation, refining and the use of this fossil fuel, domestic/industrial oily waste discharge and others. Oil from tanker spills, which is considered to occur rarely, usually only affects the coastal environment if prevailing winds and currents are directed onshore. The presence of stranded tar-balls on beaches has been reported in some areas due to the tanker routes nearby. A report of Lemigas and CNEXO (1984) showed that several sandy beaches on islands in the vicinity of Malacca Strait (Riau Islands), Makassar Strait (Langa beach) and in Kepulauan Seribu (Pulau Pari and Pulau Tikus) were polluted by stranded tarballs by as much as 7.8-67 g/ m (net weight) from 1982 survey and between 4.8- 494 g/m from the 1984 survey. This report indicated that the heavy range of oil pollution increased from 1982 to 1984. Results of laboratory analysis on tar samples using gas chromatography indicated that four different types of oil were present viz.: crude oil residue, tanker sludge residue, fuel oil residue and weathered crude oil residue. Unfortunately, no similar data are available after the 1984 survey even the current oil pollution has occurred in the vicinity of Pulau Pabelokan and Pulau Pramuka in 2004. Although oil pollution from refinery run-off has been estimated to be smaller compared to accidental tanker spills, such run-off will directly affect the coastal environment if the effluent is not managed properly. These industrial and refinery effluents, which usually flow into the coastal zone, result in relatively low levels of pollution for a long period of time. As a consequence the delayed effects of such pollution will occur. In this case marine organisms might be affected or stressed physiologically rather than killed under such a regime. Furthermore, increasing activities of processing units of a refinery from Atmospheric Residue Hydro Demetalisation (ARHDM) and from Residue Fluid Catalytic Cracking (RFCC) may result the increasing discharge in a significant number of volume. The discharge volume of liquid wastes and its quality depend on the quantity and type of crude as a feed stock. If the feed stock derived from naphtenic oils or heavy oils or high sulphur oils, care should be taken to the water disposal for the sake of environmental protection. In monitoring activities for the refinery effluent, the standard has been renewed since 1996 by the Ministerial Decree of the Minister of Environment No. 42/MENLH/10/1996 in the Appendix IV and Appendix V. Although the available treatment plant system is being used satisfactorily, but in some cases, several parameters including hydrocarbon contents still exceed the standard quality of the above Ministerial Decree. On the other hand, oil and grease contents as one of the parameters from the receiving bodies that should be analyzed have been designated, as stated in the Government Regulation No. 82/2001 and in the Ministerial Decree of Minister Environment No. 51/ 2004 , instead of petroleum hydrocarbons. But from the basic scientific point of view, the oil and grease contents have the different meaning from the petroleum hydrocarbon contents in terms of chemical formula and its impacts on the aquatic biota. Oil and grease contents include the expression of the oils derived from biological products such as the fatty acids from aquatic organisms, palm oils and others. Unlike in the petroleum hydrocarbons, in plant oils/oil and grease no toxic compounds are found in its HC chains viz.: vanadium, nickel, phenols, sulphide, aromatics, mercaptans, etc. Since the impacts of petroleum hydrocarbons to the aquatic animals are not able to compare to those impacts of plant oils/oil and grease even at the same concentration, so that the oil and grease content seem to be in-significant and irrelevant to the petroleum activities. Total petroleum hydrocarbon contents in water and poly aromatic contents (= naphthalene, phenanthrene, dibenzthiophene and its alkylated homologues) are more significant than oil and grease. The aquatic (marine) biota such as bivalves can take up oil into their tissues, which is at low concentration in the water (Blumer et al., 1970) by ingestion. Ingestion of hydrocarbons causes cell tissues to become stressed and undergo a series of often ir-reversible biochemical and cellular changes. The changes manifest themselves as alterations in the animal physiology and therefore rep- resent good indicator of xenobiotic bio-accumulation (Moore and Lowe, 1985). The characteristic cellular defence mechanisms in all organisms studied to date under environmental stress involves the induction of certain biomolecular substance which constitutes protein compounds which Atkinson and Walden (1985) called as heat shock proteins (hsp) or stress proteins (sp) . It is evident that synthesis of families of proteins of 60 kDa (kilo Dalton) and 70 kDa molecular weight (hsp 60 and hsp 70) and other stress proteins by cells of all organisms occurs in response to a wide variety of envi- ronmental stressors e.g. elevated temperatures, heavy metals, thiol reactive agents and amino acid analogues (Lindquist, 1986; Mizzen et al; 1989; Sanders, 1990). At least 30 stress proteins have been identified by gel electrophoresis (Anderson, 1989), and mainly they have molecular weights between 22 to I110 kDa (Schlesinger et al., 1982). Hsp 90, hsp 70 and hsp 60 are predominant in all prokaryotes and eukaryotes. A group of low mo- lecular weight proteins (hsp 20 - 30) is also commonly found as shown by Burdon (1987). Since bivalve mollusks are sessile, plentiful, inexpensive and relatively easy to maintain in the laboratory, their use is becoming important in monitoring programs and toxicological studies. Compared to mollusks, fish are expensive and prone to secondary stresses (such as handling and infection by fungi and bacteria) and they can avoid the polluted area. Many coastal areas in Indonesia produce several kinds of commercially valuable shellfish such as cupped oysters (Crassostrea sp.), scallops (Pecten spp), blood cockles (Anadara granosa, L), clam (Tridacna spp.) and green mussels (Mytillus viridis, L). Unfortunately there is little information on the use of these species as bio-indicators of oil pollution, particularly with respect to bio-molecular substance examination as a tool for monitoring activities. Electrophoresis is usually implemented for the examination of glycoproteins, phosphoproteins, enzymes, etc. It sems that the use of biological substance through electrophoresis method in oil pollution monitoring is a "new" break-through that needs to be considered. The aim of the study was to propose an alternative method in environmental monitoring particularly at sub lethal effects through the use of bio-molecular of suitable shellfish in Indonesia as bio-indicator of oil pollution. The examination of the substance can be carried out by Onedimensional SDS - PAGE (Sodium Dodecyl Sulphate – Poly acrylamide Gel Electrophoresis) method
A METHOD FOR CORRECTING BIAS IN SPONTANEOUS POTENTIAL (SP) LOG READING DUE TO HEAVY PRESENCE OF METALLIC MINERALS Bambang Widarsono
Scientific Contributions Oil and Gas Vol 28 No 1 (2005)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.28.1.1037

Abstract

In reservoir characterization and modeling, information derived from well log surveys (Figure 1) plays an important role. Petrophysical properties such as porosity and water saturation are important factors in the determination of hydrocarbon accumulation. (The same is true for the determination of reservoir geometrical dimensions.) Inaccurate Spontaneous Potential (SP) log derived shale contents (V) results in inaccurate porosity and water saturation. SP log is catagorized as lithology log, which primary role is to differentiate between permeable zones and non- permeable zones (i.e. shale). SP log also has secondary purposes such as determination of shale contents and formation water resistivity, as well as its use in many reservoir geological analyses. Some problems that are often asscociated with geological complexity in Indonesia is that many subsurface formations contains significant amount of minerals that have the potential to bias log survey reading including SP log's. Considering SP log's wide span of presence, misleading SP log reading may also have adverse consequence at wider scale. Therefore, a measure is required to minimize the SP log's potential bias due to presence of metallic minerals. The method presented in this paper is suggested to be used for the purpose.

Page 1 of 1 | Total Record : 6

 1 

Filter by Year

2005 2005


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