ABSOLUTE PERMEABILITY CALCULATION OF POROUS ROCK BASED ON PORE SCALE SIMULATION
Fluid injection into the Earth's subsurface is a challenge in industry. The process of fluid injection into porous rocks plays an important role in Enhanced Oil Recovery (EOR) methods that can boost oil production and Carbon Capture, Utilization, and Storage (CCUS) technology to reduce carbo...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/83519 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Fluid injection into the Earth's subsurface is a challenge in industry. The process
of fluid injection into porous rocks plays an important role in Enhanced Oil
Recovery (EOR) methods that can boost oil production and Carbon Capture,
Utilization, and Storage (CCUS) technology to reduce carbon gas released into the
atmosphere. Before the EOR method and CCUS technology are implemented,
research needs to be carried out so that the fluid injection process into the Earth's
subsurface runs optimally. An important physical parameter of porous rocks in the
subsurface that can be studied is absolute permeability. In this research, the
absolute permeability of porous rocks is investigated numerically by utilizing the
Computational Fluid Dynamics (CFD) with Finite Volume Method (FVM). To
measure the absolute permeability of porous rocks, a simulation is performed by
simulating fluid flow into a porous rock sample and the discharge value of the fluid
flow through the rock is calculated. Simulations were conducted on several porous
rock samples with differing structural configurations but nearly identical porosity,
approximately 22%. The study revealed that the absolute permeability values of the
rocks can vary significantly. One of the porous rock samples investigated exhibited
an absolute permeability of 15606 mD when fluid flowed in the x-direction and
1394 mD when fluid flowed in the z-direction. This is influenced by the pore
structure in the rock. This study also investigated the relationship of absolute
permeability with two variables related to the pore structure of the rock, namely
the specific surface area and the branch length of fluid flow through the rock. The
results show that the specific surface area or the branch length average is
insufficient to describe the absolute permeability.
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