تحلیل هندسی چین و مقادیر کمی واتنش با استفاده از مقاطع لرزه ای تراز شده (مطالعه موردی میدان نفتی کوپال)
الموضوعات : Geoscience Fields in relation with Petroleum Geologyبابک سامانی 1 , یعقوب جلیلی 2 , نگار ملایی 3
1 - دانشکده علوم زمین دانشگاه شهید چمران اهواز
2 - گروه زمین شناسی، دانشکده علوم زمین، دانشگاه شهید چمران اهواز
3 - گروه زمین شناسی، دانشکده علوم زمین، دانشگاه شهید چمران اهواز
الکلمات المفتاحية: مقطع لرزه ای, مقطع تراز شده, نسبت ابعادی چین, نسبت واتنش, درصد کوتاه شدگی,
ملخص المقالة :
در این پژوهش با استفاده از مقاطع لرزهای تفسیر شده، به بررسی ماهیت هندسی چین و مقادیر کمی واتنش در افق کربناته آسماری در میدان نفتی کوپال پرداخته شده است. بدین منظور تعداد سیزده مقطع لرزهای از میدان نفتی کوپال مورد ارزیابی قرار گرفت. با استخراخ افق کربناته آسماری از هر مقطع لرزه ای، دادههای اولیه جهت بررسی هندسی سبک چین و تحلیلهای واتنش آماده گردید. بررسی عناصر سبک چین در افق آسماری میدان نفتی کوپال نشان دهنده یک چین نامتقارن با زاویه بین یالی 110 تا 147 درجه (چین ملایم تا باز) و نسبت ابعادی 15/0 تا 38/0 (چین وسیع تا پهن) و نسبت تیزی 45/0 تا 7/0 (چین نیمه مدور) می باشد. به منظور تعیین مقادیر کوتاه شدگی و مقادیر نسبی واتنش با به کارگیری هوش مصنوعی، هر یک از مقاطع لرزهای تراز شد و مقادیر طول اولیه افق آسماری تعیین گردید. نتایج نشان دهنده مقادیر کوتاه شدگی متفاوت در بخشهای مختلف تاقدیس میباشد. مقادیر کوتاه شدگی در محدوده 67/2 تا 65/8 درصد و مقادیر نسبت واتنش در محدوده 05/1 تا 19/1 محاسبه گردید.
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