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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 9 Documents
 1 
Search results for , issue "Vol 33 No 2 (2010)" : 9 Documents clear
Indonesia‘s Refining Developments: Future Prospects and Challenges Maizar Rahman
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.660

Abstract

Since 1994 Indonesia has not built any new refineries due to the economic crisis in1998, which was followed by political reform. Last year Indonesia had imported more than400 thousand bpd (barrel per day) of petroleum products. On the supply side, Pertamina’srefinery capacity of 1,050 thousand bpd produces only up to 750 thousand bpd of petroleumfuels or 68 % of domestic consumption.A study has been conducted on the refining development in Indonesia up to year 2030.According to a projection based on reference scenario, in year 2030 Indonesia will consume2.60 million bpd of petroleum fuels. If security of supply approach is taken intoconsideration, Indonesia will require 3 million bpd of total refinery capacity. New refineriesproducing additional 2 million bpd have to be constructed in order to fulfill domesticdemand for petroleum fuels. The additional new refineries would then be on-stream one byone with 300 thousand bpd of capacity starting from year 2015, and would be built nearconsumers’ area or close to the existing refineries.As the margin of new refinery is not high enough, appropriate strategies such as optimumconfiguration, synergy to utilize possible supporting resources should be taken intoconsideration, while Indonesian government should also offers better incentives in orderto make the project economically feasible.
Avo Inversion Using Levenberg-Marquardt Optimization Technique Suprajitno Munadi; Humbang Purba
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.812

Abstract

AVO is not only well known as gas indicator over the last two decades but also more importantly, AVO provides us with a means for extracting petrophysical parameters from seismic data. Using AVO anomaly one can derive important petrophysical parameters such as Poisson’s ratio and S-wave velocity. By knowing S-wave velocity nearly all other petrophysical parameters can be calculated. An effective procedure for inverting AVO anomaly is presented in this paper. It avoids inefficient trial and error steps during the matching process between AVO anomaly and calculated AVO. This method uses Levenberg-Marquardt optimization technique.
Differential Strain Analysis: An Investigation Over Its Feasibility For Determining Coal’s Cleat Orientation Bambang Widarsono
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.813

Abstract

Gas production from coal bed methane (CBM) has been rising as supplement to conventional gas reservoirs. Effective CBM production is much determined by well placements with regards to orientation of the coal reservoir’s face cleat. This is true since this cleat type provides the main path of fluid migration from storage to wellbore. It is therefore imperative to understand and determine the general orientation of the cleats of concern. This information is usually obtained from visual description on core samples, and whenever available from analogy to outcrop data. This is considered as insufficient and a means for studying core sample’s interior is required in order to ensure consistency between external and internal appearances. This paper presents an investigative study over the possibility of differential strain analysis (DSA) technique to serve the purpose. The technique is normally used for measuring subsurface in situ stress field, and through the use of a similar basic concept it is proposed to be used for determining orientation of face cleats in coal samples. The study includes utilization of DSA data obtained from measurements on samples taken from great depths. Review and re-working over the data has shown that the technique can well indicate the orientation of face cleats. A general orientation over all tested samples is also indicated with reasonable degree of reliability. This leads into conclusion that the DSA technique can be well used to indicate cleat orientation and therefore help in better characterizing coal.
Study On The Impact Biodiesel Onto Fuel Pump And Nozzle Wear In 5 Kva Generator Diesel Engine Mardono Mardono; Maymuchar Maymuchar
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.814

Abstract

One of diesel fuel functions is to lubricate fuel pump components. Wearing process on fuel pump causes fuel pressure to the combustion chamber will drop. The pump will not distribute the hydrocarbon well in to the combustion chamber, as result incomplete combution process will occur. The objective of this study is to observe the impact of biodiesel on fuel pump and injector of the diesel engine. A 5 KVA generator diesel engine was used in this study and was operated using 48 CN diesel fuel (“Minyak Solar 48”) (B0), biodiesel 50%-volume (B50) and biodiesel 100% (B100). Each of which was subjected to 100 hour running operation and 1000 Watt load. The results of this research show that biodiesel have a positive impact in reducing wear occurence in the generator diesel engine fuel pump components or injector nozzle.
Study On Productivity Improvement Of Low Permeability Gas Reservoir By Hydraulic Fracturing Usman Usman; Darsono Marino; Marzuki Soelistijono
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.815

Abstract

The C5 well completed in the LZ tight gas limestone reservoir of C field is considered very good candidate for stimulation by hydraulic fracturing for the following reasons. The reservoir gross thickness of 127 ft is thick enough. Long fractures can be created. Penetrated zone is far from lowest known gas. The permeability of 0.2973 mD and the absolute open flow potential of 2.3 MMscf are low. Estimated proven gas accumulation of 24.5 Bscf is significant. Crosslinked Gel + Hi Temp Stabilizer is used as fracturing fluid due to high temperature reservoir of 334oF. High-strength of Sintered Bauxite proppant with 20/40 mesh sand is selected for this high stress formation of reservoir rock. The desired propped fracture width is 0.1004 inch. The fracture height is approximately 62.5 ft based on the half height from the centre depth of reservoir upward and downward. The propped fracture halflengths are predicted by Perkins-Kern-Nordgren model. Prediction shows that to have the propped fracture half-gths of 1335, 1587, 1850, 2114, 2356, 2576 and 2640 ft for the propped fracture width of 0.1004 inch and the fracture height of 62.5 ft, the required proppant weight in one fracture wing are 139,167,195,221, 246, 271 and 278 Mlbs respectively. With the obtained propped fracture halflengths, the productivities improvement (J/Jo) are 13.8, 16.4, 19.2, 21.9, 24.4, 26.7 and 27.3
Understanding Carbon Capture And Storage (Ccs) Potential In Indonesia Ego Syahrial; Usman Pasarai; Utomo P Iskandar
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.816

Abstract

National energy policy drawn up by the government through Energy Mix Target 2025 (Presidential Regulation No.5/2006) is still dominated by fossil fuel. Moreover, it is coupled with high dependence on fossil fuel, increasing demand of energy and standard of living and high rate population growth, it can turn Indonesia into one of the biggest emitter in the future. On 2009, the government has pledged a non-binding commitment to reduce country emissions by 26% in 2020. This aspiring target requires great efforts besides reliying on current strategies such as energy mix improvements, the switch to less-carbon intensive fuels and renewable resources deployment as well as conservation. Carbon Capture and Storage (CCS) is one of the climate change mitigation tools with the technological capability to reduce CO2 in substantial amount and deep cut particularly on energy sector. CCS is typically defined as the integrated process of CO2 separation at industrial plants, transportation to storage sites and injection into subsurface formations. This paper explains the possibility of CCS potential deployment in Indonesia by reviewing required components and provides comprehensive understanding in each CCS key lements.
Oil Spill Pollution Detection Using Palsar Data In Timor Sea Tri Muji Susantoro; Suliantara Suliantara; Djoko Sunardjanto
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.817

Abstract

The processing of Palsar imagery has been conducted for detecting an oil spill in Timor Sea. Three series of Palsar imageries i.e. Sept 2nd, Oct 3rd and Oct 6th, 2009 are used to analysis in this area. At September 2nd, 2009 based on Palsar Imagery, oil spill was detected around of Montara Platform. Oil spill seen appeared as dark tone The area that has been covered by oil spill is more than 100 km2. At September 24rd, 2009 oil spill was dispersed to North and West Montara Field. At October 3, 2009 showed that oil spill was detected in the north of Seba Coast, Sawu Island. Oil spill in this area clearly showed in Palsar Imagery base on a long dark lines. Oil spill at October 6th, 2009 were still dispersed in Timor Sea. Based on Palsar imagery, oil spill is identified in South Rote Island about 150 km long, appeared as dark lines in Palsar imagery
Petrochemical Industries A.S Nasution; Abdul Haris; Morina Morina; Leni Herlina
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.818

Abstract

Petrochemical processes begin with relatively few basic raw materials, expand into a complex network of chemicals and converge into materials that serve specific functions as consumer products. Then raw material base for the petrochemical industry primarily depends upon the type of intermediates and final products required by industry and consumer. Almost all petrochemicals are derived from three sources: synthesis gas, olefin and aromatic. Production of those three petrochemical sources and the derivative chemicals are described briefly
Contribution Of Refinery Carbon Dioxide Emission To Global Warming R Desrina
Scientific Contributions Oil and Gas Vol 33 No 2 (2010)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.33.2.819

Abstract

The energy sector, including petroleum refining, is likely to feature in any legislation aimed at reducing CO2 emissions. It seems that petroleum refinery contributes relatively small amount of CO2 emission compared to other sectors such as transportations. Recently, through presidential speech in Copenhagen, government of Indonesia has committed to reduce CO2 emission to 26 percent in the year of 2020. Many technologies can be used for reducing CO2 emission in refinery. These technologies include fuel replacement, gasification of heavy residue which leads to single point CO2 capture, and CO2 equestration. This paper tries to discuss how far CO2 emissions contributed by refinery and possible actions that can be managed on the refinery to significantly reduce CO2 emissions

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