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All Journal Scientific Contributions Oil and Gas
Sugihardjo Sugihardjo
Research and Development Centre for Oil and Gas Technology "LEMIGAS"
Chemical Engineering, Chemistry & Bioengineering Energy

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SURFACTANT PROPERTIES EVALUATION FOR CHEMICAL FLOODING Sugihardjo Sugihardjo
Scientific Contributions Oil and Gas Vol 31 No 3 (2008)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.31.3.1014

Abstract

The need of EOR techniques in the late field production period is essential to get the third wind of incremental oil. Chemical injections are proven technologies not only at the laboratory scale but also at the field scale which have been implemented in many parts of the world. Surfactant is an important chemical in this technology, which mostly has been used to reduce the capillary trap of the oil in the reservoirs. The selection of surfactant type which is suitable for a specific oil field to increase the oil production should fulfill the selection criteria. Laboratory works firstly should be done to evaluate the important properties based on the industrial standard procedures. These laboratory tests include compatibility test, aqueous stability test, phase behavior study, micro-emulsion viscosity, interfacial tension determination, thermal stability test, and filtration test.
INVESTIGATIONS ON THE STORAGE EFFICIENCY OF CO2 IN CARBONATE AQUIFERS Sugihardjo Sugihardjo
Scientific Contributions Oil and Gas Vol 27 No 2 (2004)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.27.2.1051

Abstract

The production of associated and nonassociated gas increases due to additional new oil and gas fields. Consequently, there will be an increase of CO2 released from associated gas, and especially, from nonassociated gas. Actually, CO2 may still be utilized in an attempt of increasing oil recovery through the methods of EOR (Enhanced Oil Recovery) or IOR (Improved Oil Recovery). In general, on the one hand, the CO2 availability in the atmosphere is still be needed for the photosynthesis process. But, on the other hand, this gas can stimulate the greenhouse effect that influences the global warming and weather changes. Prior being utilized, CO2 can be stored first in the depleted oil reservoirs or in the aquifers. The feasibility of these reservoirs or aquifers as a CO2 storage can be determined through the mechanisms of CO2 /water injection, or CO2 solubility in the water. For the purpose of several experiments, specific characters of the cores and formation water were decided taken from a representative carbonate reef formation in West Java region to substitute the samples from Natuna Field. The experiments were then continued on studying the CO2 solubility in the formation water not only at constant volume but also with varied volume, and also the CO2 storage efficiency in the carbonate rocks saturated with water.
INCREASING OIL RECOVERY THROUGH LOW-TENSION POLYMER FLOODING Sugihardjo Sugihardjo
Scientific Contributions Oil and Gas Vol 22 No 2 (1999)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.22.2.1089

Abstract

After completing a waterflood activity, the need of enhancing oil recovery (EOR) is essential. The selection of appropriate EOR methods that will be applied to particular field, as an effort to increase oil recovery, mainly depens on the reservoir characteristics and fluid behaviors.
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