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One of the most favourite methods in EOR is surfactant injection into reservoir. The main purpose is reducing Sor, after that increasing the recovery factor. Theoterically, RF after surfactant injection could be bigger than initial EUR. Usually, surfactant injection is done to sandstone/carbonate re...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/22780 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | One of the most favourite methods in EOR is surfactant injection into reservoir. The main purpose is reducing Sor, after that increasing the recovery factor. Theoterically, RF after surfactant injection could be bigger than initial EUR. Usually, surfactant injection is done to sandstone/carbonate reservoir with heavy or/and viscous oil. In this study, the reservoir is sandstone with light oil. The problem with light oil is mobility ratio, which is very good. The oil is flowing very well, so the surfactant injection couldn’t give big incremental. However, the surfactant injection is still feasible, in order to reduce Sor. In order to get the suitable surfactant, there are several tests that must be conducted. There are chemical test; phase behavior test, aquaeous stability test and IFT tes, and coreflooding test, to see whether the surfactant is compatible with reservoir or not. The result is 4 surfactants, which are compatible with the reservoir. When do the coreflooding test, a simulation with CMG simulator is made, the results between coreflooding test and simulation must be matched. After doing the history matching, a series of sensitivity cases will be done, in order to see the most dominant parameter that will determine the success of surfactant injection. The result said that IFT, concentration, and amount of injected surfactant are the dominant factors. |
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