نتایج جستجو برای: seismic and pre

تعداد نتایج: 16873933  

Journal: :نشریه دانشکده فنی 0
شبنم شهبازی دانشگاه صنعتی امیرکبیر عبدالرحیم جواهریان موسسه ژئوفیزیک مجتبی محمدو خراسانی شرکت ملی نفت

geological facies interpretation is essential for reservoir studying. the method of classification and identification seismic traces is a powerful approach for geological facies classification and distinction. use of neural networks as classifiers is increasing in different sciences like seismic. they are computer efficient and ideal for patterns identification. they can simply learn new algori...

2016
A. J. Kappos V. K. Papanikolaou

A large part of the building stock in seismic-prone areas worldwide are masonry structures that have been designed without seismic design considerations. Proper seismic assessment of such structures is quite a challenge, particularly so if their response well into the inelastic range, up to local or global failure, has to be predicted, as typically required in fragility analysis. A critical iss...

Journal: :Proceedings of the Imperial Academy 1929

Nowadays geomechanics plays a major role in optimizing the production and development stages of hydrocarbon reservoirs. The high cost of drilling wells and maintaining a functional well entails companies to utilize geomechanical modeling to determine the most efficient drilling path and the safest mud windows in order to maintain the stability of the well and prevent critical fracturing and col...

Journal: :نشریه دانشکده فنی 0
مجید میبدیان دانشگاه تهران حسین معماریان دانشگاه تهران مهدی زارع پژوهشگاه زلزله

sarcheshmeh copper mine, with the final reserves of 828 million tons of sulfur ore and average grade of 0.74%, is known to be the largest open pit of iran and most probably the second largest copper mine in the world. this mine is located in the seismotectonic zone of central-iran, and 23 km away from the 150 km long rafsanjan active fault.in this study the vulnerability of the west wall of the...

2001
David E. Lumley

I present an idealized physical model of steamflood fluid-flow and make rock physics predictions of seismic impedance changes that might be observable in 3-D surface seismic monitoring data. Four distinct fluid-flow phases are considered. Closest to the steam injection well, a small hot steam zone should be very visible in seismic data due to a predicted 30% decrease in P-wave velocity (Vp) com...

2012
Xiaohua Tong Zhonghua Hong Shijie Liu Xue Zhang Huan Xie Zhengyuan Li Sonlin Yang Weian Wang Feng Bao

To address the disadvantage of traditional methods providing only two-dimensional (2D) damage change of the collapsed buildings, this paper presents an approach for the detection of the buildings that have collapsed in an earthquake based on 3D geometric changes, particularly height change of the buildings, using preand post-seismic IKONOS stereo image pairs. One of the critical issues – the ac...

2013
Zhikun Ren Zhuqi Zhang Fuchu Dai Jinhui Yin Huiping Zhang

Hillslope instability has been thought to be one of the most important factors for landslide susceptibility. In this study, we apply geomorphic analysis using multi-temporal DEM data and shake intensity analysis to evaluate the topographic characteristics of the landslide areas. There are many geomorphologic analysis methods such as roughness, slope aspect, which are also as useful as slope ana...

Abdorrahim Javaherian Mojtaba Mohammadoo Khorasani Shabnam Shahbazi

Geological facies interpretation is essential for reservoir studying. The method of classification and identification seismic traces is a powerful approach for geological facies classification and distinction. Use of neural networks as classifiers is increasing in different sciences like seismic. They are computer efficient and ideal for patterns identification. They can simply learn new algori...

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