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تعیین گونههای سنگی با استفاده از روشهای واحدهای جریانی، آنالیز خوشهای گرافیکی و خوشهبندی میانمرکز فازی سازند سروک در یکی از میدانهای نفتی فروافتادگی دزفول | ||
زمین شناسی کاربردی پیشرفته | ||
مقاله 17، دوره 12، شماره 4، بهمن 1401، صفحه 925-944 اصل مقاله (1.91 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22055/aag.2022.39173.2259 | ||
نویسندگان | ||
زهرا صلواتی1؛ الهام اسدی مهماندوستی* 2؛ سید علی معلمی3 | ||
1گروه زمین شناسی، دانشکده علوم زمین، دانشگاه خوارزمی، تهران، ایران | ||
2، گروه زمین شناسی، دانشکده علوم زمین، دانشگاه خوارزمی، تهران، ایران | ||
3پژوهشگاه صنعت نفت ، تهران، ایران | ||
چکیده | ||
با توجه به اهمیت سازند سروک و نقش مهم تعیین گونههای سنگی در کیفیت مخزنی، در این مقاله به تعیین گونههای سنگی سازند سروک با استفاده از روشهای واحدهای جریانی، آنالیز خوشهای گرافیکی و خوشهبندی میانمرکز فازی در کنار مطالعات پتروفیزیکی به روش احتمالی، در یکی از میدانهای نفتی واقع در فروافتادگی دزفول شمالی پرداخته می شود. ابتدا با بهرهگیری از روش شاخص زون جریان، 4 گونهسنگی به دست آمد که به ترتیب کیفیت مخزنی گونه سنگی 4 خیلی خوب و گونه سنگی 1 ضعیف در نظر گرفته شد. در روش آنالیز خوشهای گرافیکی، 6 رخساره الکتریکی توصیف شد که رخسارههای الکتریکی شماره 6، 5 و 4 دارای پتانسیل مخزنی خوب بوده که وجود آنها در بخشهایی از سازند حاکی از یک بخش مخزنی در سازند سروک است. روش خوشهبندی میانمرکز فازی 7 گونهسنگی مشخص که کیفیت مخزنی گونههای سنگی 7، 6 و 5 با توجه به مقادیر بالای تخلخل و تراوایی خیلی خوب میباشد. تطابق دادههای به دست آمده در نهایت منجر به شناسایی 7 زون مخزنی برای سازند سروک شده است. زونهای 3 و 7 دارای بهترین کیفیت مخزنی هستند که عمدتاً در بخش میانی و پایینی سازند مورد مطالعه قرار دارند. تطابق دادهای به دست آمده با منحنیهای فشار موئینه نیز بیانگر همبستگی با گونههای سنگی تعیین شده و خصوصیات مخزنی است. نتایج این مطالعه نشان دهنده کارایی بالای روشهای واحدهای جریانی، آنالیز خوشهای گرافیکی و خوشهبندی میانمرکز فازی برای تعیین گونههای سنگی در فواصل فاقد مغزه در سازند سروک در میدان نفتی مورد مطالعه میباشد. | ||
کلیدواژهها | ||
گونهسنگی؛ واحدهای جریانی هیدرولیکی؛ آنالیز خوشهای گرافیکی؛ خوشهبندی میانمرکز فازی؛ سازند سروک | ||
مراجع | ||
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