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Yusep K Caryana
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Chemical Engineering, Chemistry & Bioengineering Energy

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Technology Challenges In Indonesia Oil And Gas Development Maizar Rahman; Suprajitno Munadi; Bambang Widarsono; Yusep K Caryana
Scientific Contributions Oil and Gas Vol 34 No 1 (2011)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.34.1.787

Abstract

This paper presents the challenges in oil and gas development in Indonesia, especially in technical aspects. In upstream, this country faces the fact that the production as well as the proven reserves of oil is continuing to decline. The challenges are therefore on how to find new resources, how to develop frontier area and how to produce more oil from the remaining oil in place in the existing fields. The oil deposit and traps are small, but also complexes. Very limited primary data makes it difficult to have a discovery. More accurate, intensive and comprehensive exploration data are therefore needed which, in turn, will need the use of the most sophisticated exploration technology. On the other hand it isrecommend that Government of Indonesia should generate primary exploration data prior to oil and gas prospecting. Regarding production, there is still hope to maintain the production level by exploiting further the remaining oil in place, the effort of which will need the use of advanced technology. The future of EOR application in Indonesia is bright and steps have been taken towards the objective. However, some important technical matters should still be overcome. In petroleum refining Indonesia faces increasing demand, the need of lighter products, more stringent fuels specifications, demand increase of petrochemical products, old and low complexity existing refineries and not sufficient margin for developing new refinery. The development of new refineries seems a must from the view of energy security. However, low margin should be overcome by appropriate strategy such as integration with petrochemical and employing more efficient technology. Some challenges that need to be considered in gas development in Indonesia include increasing gas demand,more gas reserve offshore, scattered gas consumers, limited infrastructure, not optimal domestic utilization and weak willingness to pay. Several technological approaches should be done to overcome those challenges.
Carbon Bed Interflow Performance Prediction Using Variable Hypothetic Pressure Wave Cycles Model Yusep K Caryana
Scientific Contributions Oil and Gas Vol 32 No 2 (2009)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.32.2.841

Abstract

The nature of low productivity of CBM well experiences represent low interflow performace over matrix and fractures in coal bed. Therefore, to increase CBM well production rate, it is necessary to improve the interflow performace. An approach to improve the interflow performance is to find out the possibility of increasing gas flowrate in carbon bed taken into account factors dominantly effect on the performance. For this purposes, Variable Pressure Wave Cycles Hypothetical Model has been developed based on Pressure-Swing adsorption - desorption (PSA) technique commonly applies in natural gas separation using carbon active bed. Preliminary simulation of the model has been carried out using data related to carbon bed taken from previous studies. Variables in the simulation are kinetic constant and hypothetic pressure waves generated which is required to increase gas flow rate in the bed. The simulation results demonstrate the possibility of interflow performance improvement in carbon bed. However, this improvement is asymptotically limited to maximum amount of gas desorbed from carbon bed as well as Langmuir Isotherm pattern application for gas desorption from coal. Moreover, the simulation of the model shows the sensitivity of gas interflow performance to hypothetical pressure waves generated and kinetics controlling adsorption/desorption mechanism and mass transport in carbon bed.
Developing Coal Bed Methane Gas Utilization Pilot Project To Produce Residential Electricity Yusep K Caryana
Scientific Contributions Oil and Gas Vol 32 No 3 (2009)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.32.3.852

Abstract

Coal Bed Methane pilot project has produced around 80 m3 CBM gas containing around 14,66% volume of CO2 and 85,34% volume of CH4. CO2 has to be removed, the methane gas can be utilized to produce residential electricity applying the lattest technology. Some equipment need to be installed in place at proposed CBM gas site plant to produce the electricity of around 150 KWe per day or 51,75 MWe per annum from which the pilot project can be scaled up to 1 x 55 MW gas fuelled power plant.
Developing Small Scale Flare Gas Recovery Unit To Utilize Not Economically Feasible Gas Flare Yusep K Caryana
Scientific Contributions Oil and Gas Vol 32 No 3 (2009)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.32.3.854

Abstract

The World Bank’s flare gas utilization evaluation in Indonesia (2006) excluded the not economically feasible flare gas to be commercially utilized due to various barriers and economic reasons. To implement No Flare Gas Policy in Indonesia, it is necessary to carry out an analysis on the possibility of the not economically feasible flare gas based on the latest technology development and proximity flare gas market next to existing onshore oil/gas fields producing the flare gas. Small Scale Flare Gas Recovery Unit has been modelled to recover the gas flared and transported the gas to the proximity flare gas market. This concept shows that the not economically feasible flare gas can be commercially utilized in term of small/medium bussiness unit, and therefore No Flare Gas Policy in Indonesia will be achieved.
An Indonesian Experience, Consumers’ Demand For Cng Compression Facilities Performance Yusep K Caryana
Scientific Contributions Oil and Gas Vol 21 No 1 (1998)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.21.1.950

Abstract

Compressed Natural Gas (CNG) has been used to fuel vehicles in many countrie, including in Indonesia. However, there are many difficulties to overcome in CNG public acceptance. In Indonesia, one of these may be CNG consumer’s preference for certain CNG refuelling stations over others. Finding causes of this may help increase acceptance of CNG by Indonesian motorists and enable CNG to make a better contribution to achievingthe country’s energy diversification policy. It is hypothesized that the variation in intake pressures at CNG station to be a cause for preference by CNG consumers. This hypothesis is based on the variation in total energy of CNG delivered at the point of sale as a result of CNG compressor capacity. It is found that, when the gas system pressure was less than CNG station intel design pressure, the CNG produced in the fuel tank would not reach its design pressure. Consequently, its total energy per fuel tank and payback period of compression facilities investment was affected.The analysis of CNG acceptance and a correlation with CNG station intel design pressure and gas composition from the consumers’ point of view will examine the following factors:The effect of various intel pressure at CNG stations on the performance of existing CNG compressors and after-cooler.The effect of CNG compressor discharge conditions and after-cooler performance on the total energy of CNG delivered to the fuel tank which in turn affects the heating value of the fuel to the vehicle engines.Evaluation of CNG compressor discharge conditions effecting the payback period of CNG station investment and determination of potential significance to compression facilities acceptance.
Co-Authors Bambang Widarsono Maizar Rahman Suprajitno Munadi