کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8915383 1641098 2018 67 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deblending of simultaneous-source data using iterative seislet frame thresholding based on a robust slope estimation
ترجمه فارسی عنوان
تجزیه و تحلیل داده های منبع همزمان با استفاده از آستانه فریم حرارتی تکراری بر اساس یک برآورد شیب قوی
کلمات کلیدی
معکوس تکراری، منبع همزمان، لغو کردن فریم ورق برآورد شیب،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
In a simultaneous source survey, no limitation is required for the shot scheduling of nearby sources and thus a huge acquisition efficiency can be obtained but at the same time making the recorded seismic data contaminated by strong blending interference. In this paper, we propose a multi-dip seislet frame based sparse inversion algorithm to iteratively separate simultaneous sources. We overcome two inherent drawbacks of traditional seislet transform. For the multi-dip problem, we propose to apply a multi-dip seislet frame thresholding strategy instead of the traditional seislet transform for deblending simultaneous-source data that contains multiple dips, e.g., containing multiple reflections. The multi-dip seislet frame strategy solves the conflicting dip problem that degrades the performance of the traditional seislet transform. For the noise issue, we propose to use a robust dip estimation algorithm that is based on velocity-slope transformation. Instead of calculating the local slope directly using the plane-wave destruction (PWD) based method, we first apply NMO-based velocity analysis and obtain NMO velocities for multi-dip components that correspond to multiples of different orders, then a fairly accurate slope estimation can be obtained using the velocity-slope conversion equation. An iterative deblending framework is given and validated through a comprehensive analysis over both numerical synthetic and field data examples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Applied Geophysics - Volume 153, June 2018, Pages 17-37
نویسندگان
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