Hosein Hashemi
Assistant Professor, Department of Earth Physics, Institute of Geophysics, University of Tehran, Iran
[ 1 ] - Application of 2D inversion of magnetotelluric in exploration of hydrocarbon in south west of Iran
Since hydrocarbon sources have an important role in development of industry and technology, exploration of them has been lionized by human. The seismic reflection method is one of the most applicable investigative methods to identify the hydrocarbon reservoirs, but in some cases this method does not work well because of geology conditions and wave attenuation in depth. Thus, some exploration me...
[ 2 ] - Application of different inverse methods for combination of vS and vGPR data to estimate porosity and water saturation
Inverse problem is one of the most important problems in geophysics as model parameters can be estimated from the measured data directly using inverse techniques. In this paper, applying different inverse methods on integration of S-wave and GPR velocities are investigated for estimation of porosity and water saturation. A combination of linear and nonlinear inverse problems are solved. Linear ...
[ 3 ] - Comparison Between Unsupervised and Supervise Fuzzy Clustering Method in Interactive Mode to Obtain the Best Result for Extract Subtle Patterns from Seismic Facies Maps
Pattern recognition on seismic data is a useful technique for generating seismic facies maps that capture changes in the geological depositional setting. Seismic facies analysis can be performed using the supervised and unsupervised pattern recognition methods. Each of these methods has its own advantages and disadvantages. In this paper, we compared and evaluated the capability of two unsuperv...
[ 4 ] - معرفی کاربرد نرم‌افزار SeisART برای تحلیل رخساره‌های لرزه‌ای با استفاده از ترکیب روش‌های هوشمند و دانش مفسر
تحلیل رخساره‌های لرزه‌ای، فنی است برای به نقشه درآوردن خصوصیات و ویژگی‌های زمین‌شناسی با استفاده از اطلاعات لرزه‌ای. برای تحلیل رخساره‌های لرزه‌ای با استفاده از الگوریتم‌های یادگیری ماشین، نشانگرهای لرزه‌ای دسته‌بندی می‌شوند. این دسته‌بندی به شناسایی رخساره‌های مختلف درون مقاطع یا افق‌های لرزه‌ای می‌انجامد.. به دلیل ماهیت داده‌های لرزه‌ای، که همواره درجه‌ای از عدم قطعیت دارند، تنوع نشانگرهای ل...
[ 5 ] - Fisher Discriminant Analysis (FDA), a supervised feature reduction method in seismic object detection
Automatic processes on seismic data using pattern recognition is one of the interesting fields in geophysical data interpretation. One part is the seismic object detection using different supervised classification methods that finally has an output as a probability cube. Object detection process starts with generating a pickset of two classes labeled as object and non-object and then selecting ...
[ 6 ] - Constrained Seismic Sequence Stratigraphy of Asmari - Kajhdumi interval with well-log Data
Sequence stratigraphy is a key step in interpretation of the seismic reflection data. It was originally developed by seismic specialists, and then the usage of high-resolution well logs and core data was taken into consideration in its implementation. The current paper aims in performing sequence stratigraphy using three-dimensional seismic data, well logs (gamma ray, sonic, porosity, density, ...