ارائه مدل ترکیبی حاصل از دو مدل فیزیک سنگ با روش انتگرال فازی سوگنو در یکی از میادین نفتی جنوب غربی ایران | ||
| روش های تحلیلی و عددی در مهندسی معدن | ||
| مقاله 3، دوره 10، شماره 23، مرداد 1399، صفحه 31-52 اصل مقاله (3 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.29252/anm.2019.1631 | ||
| نویسندگان | ||
| حمید صیفی* 1؛ بهزاد تخم چی1؛ علی مرادزاده2 | ||
| 1دانشکده مهندسی معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود | ||
| 2دانشکده مهندسی معدن، دانشگاه تهران | ||
| چکیده | ||
| با به کارگیری مدلهای فیزیک سنگی، شناسائی هرچه دقیقتر مخزن هیدروکربوری امکانپذیر است و به دنبال آن مخاطره اکتشاف و تولید نفت و گاز به میزان قابلتوجهی کاهش مییابد. در مطالعه حاضر، سه مدل فیزیک سنگ خود سازگار-گاسمن، شو-پاین و شو-وایت در یک مخزن کربناته نفتی در جنوب غربی ایران در دو چاه هدف مورد بررسی قرار گرفتند. با استفاده از روشهای ترکیب اطلاعات انتگرال فازی سوگنو و وزن دهی افزایشی ساده، دو مدل ترکیبی مختص مخزن مورد مطالعه، تهیه و ارائه گردیدند. سرعت موج طولی و برشی با کمک نگارهای چاهی و نوع حفرات حاصل از مقاطع نازک و سیتیاسکن در مخزن مورد مطالعه برآورد و از لحاظ کمی و کیفی مقایسه گردید. نتایج نشان داد که خطای نسبی در تخمین سرعت موج برشی در چاه A و B به ترتیب از 21 درصد به 4 درصد و از 24 درصد به 5/4 درصد رسید. همچنین خطای نسبی در تخمین سرعت موج طولی در چاههای مورد مطالعه از 14 به 5/2 درصد در چاه A و از 21 به 2 درصد در چاه B کاهش یافت. همچنین در بین سه مدل موجود نتایج برآورد شو-وایت و سوگنو در تخمین سرعتهای طولی و برشی در چاه A به ترتیب از کمترین(79 و 81) و بیشترین ضریب همبستگی (99 و 98) با داده واقعی برخوردار بودند. در واقع نتایج به دست آمده از سه مدل فیزیک سنگی و مدلهای ترکیبی بیانگرآن است که مدل ترکیب شده با روش سوگنو بهترین برآورد را ارائه نموده است. | ||
| کلیدواژهها | ||
| ترکیب اطلاعات؛ سرعت موج طولی و برشی؛ مدل خود سازگار-گاسمن؛ مدل شو-پاین؛ مدل شو-وایت؛ مدل وزن دهی افزایشی ساده و مخازن کربناته | ||
| عنوان مقاله [English] | ||
| Presentation of a Fusion Model Derived From Two Rock Physics Models Using Sugeno Fuzzy Integral Method in One of the Southwestern Oilfields of Iran | ||
| نویسندگان [English] | ||
| Hamid Seifi1؛ Behzad Tokhmechi1؛ Ali Moradzadeh2 | ||
| 1Dept. of Mining, Petroleum & Geophysics, Shahrood University of Technology, Shahrood, Iran | ||
| 2Dept. of Mining, University of Tehran, Tehran, Iran | ||
| چکیده [English] | ||
| Summary Using rock physics models, it is possible to simulate the reservoir more precisely and as a result, the risk of exploration and production of oil and gas will be reduced significantly. In this study, three models of Self-Consistent-Gassmann, Xu-Payne, and Xu-White were investigated in two wells in a carbonate reservoir in the southwest of Iran. Then, two fused models were proposed to improve the accuracy and improve the efficiency by using the Sugeno fuzzy integral fusion method and Simple Additive Weighting (SAW) Model, respectively. The compressional wave velocity and shear wave velocity were estimated using the 5 mentioned models. The results show that in Xu-White and Sugeno fuzzy integral models, the estimation of compressional and shear velocity in well A have the lowest (79 and 81) and the highest correlation coefficient (99 and 98) with real data, respectively. This indicates that the Sugeno fused model is the best estimate. Introduction Since the seismic reservoir characterization has a very important role in all stages of exploration up to the development and production of hydrocarbon reservoirs, it is important to identify the relationship between reservoir properties and their elastic behavior, using the rock physics model. In order to improve the rock physics models, researchers have proposed different methods, which in this study Sugeno fuzzy integral fusion method has been used. Methodology and Approaches The study of the elastic properties of rock physics on carbonate rock was carried out through Self-Consistent-Gassmann, Xu-Payne, and Xu-White rock physics models. All these models were built to derive optimal elastic properties to obtain reliable estimates of compressional wave velocity, shear wave velocity.The main step consisted of modeling each of the seismic rock properties over a specified porosity, pore space system, and hydrocarbon type. In the end, these two models are fused by the Sugeno fuzzy integral fusion model and SAW model. All the models have been evaluated by measured (observed) data. Results and Conclusions Three models of Self-Consistent-Gassmann, Xu-Payne, and Xu-White rock physics were evaluated and compared using petrophysical and geological data, in a carbonate reservoir of an Iranian oil field. By examining the results of compressional and shear wave velocity estimation using two fusion methods (SAW and Sugeno) and three models of rock physics, it is determined that the methods and models used for the studied carbonate reservoir have given a satisfactory result, but the Sugeno fusion model has improved the results. The reason for this could be related to the use of optimization algorithms in the Sugeno. | ||
| کلیدواژهها [English] | ||
| Data Fusion, Self Consistent -Gassmann Model, Shear /Compressional Wave Velocity, Simple Additive Weighting Model, Xu-Payne Model, Xu-White Model | ||
| اصل مقاله | ||
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امروزه ثابت شده که دادههای لرزهای در مطالعات مخزن چه در بخش اکتشاف، چه در حیطه تولید و توسعه و چه در ازدیاد برداشت مخازن هیدروکربوری، نقش به سزایی دارد. همچنین با توجه به اینکه مخازن بزرگ به نیمه دوم عمر خود در تولید رسیده اند و اکتشاف مخازن نفت و گاز بزرگ دنیا از روندی کاهشی برخوردار شده اند، لذا اهمیت استفاده از دادههای لرزهای روز به روز افزایش مییابد. به منظور ارتباط داده لرزهای (پارامترهای الاستیک) به پارامترهای مخزنی از علم فیزیک سنگ استفاده میشود. علم فیزیک سنگ در واقع به منظور کمیسازی نتایج مطالعات لرزهای به کار میرود]1-4[. پارامترهای الاستیک شامل سرعت موج فشاری، سرعت موج برشی و چگالی است که روابط فیزیک سنگی به استخراج خواص مخزنی و زمینشناسی (از جمله تخلخل، محتوای رس، اشباع سیال و لیتولوژی) از پارامترهای الاستیک کمک شایانی میکند. در مطالعات ژئوفیزیکی مخازن هیدروکروبوری، استخراج اطلاعات مناسب از خواص مخزنی منوط به وجود یک مدل معتبر از خصوصیات فیزیکی سنگ است، به عبارت دیگر داشتن بهترین مدل فیزیک سنگ، از اهمیت بسیاری برخوردار است ]7-5[. | ||
| مراجع | ||
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