#TITLE_ALTERNATIVE#

• Main Author: PUTU ARY WIJAYA (NIM: 22015001), I
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28091
• Institution: Institut Teknologi Bandung

<p align= "justify">Fault can be either conduits or retarders of fluid flow and presence of faults increases the risk of hydrocarbon exploration. Fault seal analysis involves indentifying reservoir juxtaposition on fault surfaces and assessing membrane seal potensial which is generated by cataclasis process, a process of crushing (sand) grains to produce a fault gouge which reduce the porosity and permeability along the fault zone. Shale gouge ratio (SGR) is used to determine sealing property by calculate the percentage of sum of shale thickness divide by fault throw whereas SGR is not the only parameter to prescribe sealing capacity on fault surface. Geomechanical analysis by calculating present day in-situ stress on fault surface can be used to assess the fault sealing behavior. Fault seal and geomechanical analysis has been done at Meraksa Field, Ogan Komering, South Sumatra. The research are focused on Air Benakat Formation where have two potential hydrocarbon reservoir then called reservoir A and reservoir B. Sealing property are controlled by shale gouge ratio (SGR) where SGR percentage <br /> >20% are leaking and SGR <20% are leaking. The SGR distribution on the reservoir A and B shows that these reservoir have potential to be sealed due to SGR percentage > 20%. The result of geomechanical analysis in the research area is controlled by strike slip regime. The slip tendency analysis (Ts) and dilation tendency (Td) and fracture stability vi (Fs) on the fault with North East – South West orientation is tend to reactivate and dilate, whreas North West – South East fault orientation is tend to be sealing and fracture stability (Fs) analysis shows the pressure needed to reactivate fault to slip is 5 MPa.<p align= "justify">