نوع مقاله : مقاله پژوهشی
نویسندگان
1 محقق در دانشگاه تهران
2 گروه زمین شناسی نفت، پژوهشکده علوم پایه کاربردی، تهران، ایران
3 گروه زمین شناسی، دانشگاه آزاد ارومیه، ارومیه، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Seismic data, in addition to qualitative interpretation, are also considered to be valuable numerical data in hydrocarbon fields. It is very important to determine the distribution of the fluid type in the field scale and also to determine the lithology in the Asmari reservoir, which is considered a heterogeneous formation in this field. This study aims to analyze the variation of amplitude versus offset based on depth and rock physics studies to understand the behavior and properties of the reservoir due to oil, gas, or water saturation.
To predict the behavior of the reservoir in the upper carbonate part of Asmari, the target field has been modeled with different saturations. Finally, after investigating and understanding the seismic behavior of the reservoir the main indicators in the description of reservoir fluids, AVO attributes have been extracted.
For the determination of fluid type in the Asmari reservoir four methods: 1: fluid replacement method (FRM), 2: elastic impedance inversion, 3: AVO attributes, and 4: Vp/Vs ratio showed that gas fluid has accumulated homogeneously in the target zone. Also, based on the Vp/Vs ratio results, the distribution of three lithology types, limestone, dolomite, and anhydrite, was determined in the upper part of the Asmari Formation.
کلیدواژهها [English]
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