THE EFFECT OF TYPE WAVES ON VIBROSEISMIK IMPLEMENTATION TO CHANGES PROPERTIES OF ROCK, FLUIDS, AND ENHANCED OIL????RECOVERY
Vibroseismic stimulation is one of method that can be used to increase oil production by propagating waves through vibrations to the reservoir at specific frequencies and amplitudes. The purpose of this research study is to determine the mechanism and implementation of efforts to optimally increase...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/47064 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Vibroseismic stimulation is one of method that can be used to increase oil production by propagating waves through vibrations to the reservoir at specific frequencies and amplitudes. The purpose of this research study is to determine the mechanism and implementation of efforts to optimally increase oil production using longitudinal and circular wave types on parameters of rock physical properties, fluid viscosity, oil composition to decrease the saturation of residual oil and enhanced oil recovery.
Based on the results of laboratory studies, coreflooding testing before vibration produces a recovery factor of 51.96% with residual oil saturation (Sor) of 59.03%. The surprising results when the vibration effect applied to the coreflooding test method with continuous longitudinal wave types succeeded in increasing the recovery factor by 60.54%, intermittent longitudinal waves by 63.53% and circular waves by 64.76%. The residual oil saturation (Sor) produced by a continuous longitudinal wave is 48.49%, the intermittent longitudinal wave is 44.81%, and the circular wave is 43.3%. Methods of continuous longitudinal wave-type vibrations have increased oil gain by 16%, intermittent longitudinal waves by 22%, circular waves by 25% and Sor down by 18-27% from before the vibration effect was given. Vibration technology can change the physical properties of rocks, among others; permeability has increased by 7-31%, porosity by 4.63-6.46%, grain size by 45.16- 47.98µm; changes in oil composition to contain more alkane compounds and lack of aromatic compounds; oil viscosity has increased by 3-61%. The new insight from this paper are analyzing the vibroseismic effect by using SEM images in terms of watershed segmentation results of the Rabbani algorithm compared with lab results with an error rate below 2%, and a review of oil composition by GC-MS method.
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