71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009

An alternative to seismic methods typically used in shallow subsurface prospecting (0-100m) consists in taking advantage of advances in quantitative imaging based on full waveform inversion, which is supposed to overcome their inherent limitations. In thi

In general, seismic waveform inversion adopts an objective function based on the L2-norm. However, waveform inversion using the L2-norm produces distorted results because the L2-norm is sensitive to statistically invalid data such as outliers. As an alter

In order to properly describe subsurface velocity structures in anisotropic media, especially transversely isotropic (TI) media, we develop a waveform inversion algorithm based on the 2-D time-domain cell-based finite-difference modeling technique. The ac

Inversion of seismic data for elastic properties is now commonly performed throughout the industry in support of a variety of exploration and production applications. However, in areas of reduced data quality or sparse well control, the accuracy of the pa

In this study rock physics depth trends and a lithology/fluid Markov random field are used to constrain a 2D Bayesian lithology/fluid inversion. Lithology/fluid classes are defined in a lithology/porosity/fluid space, and a stochastic relation from lithol

AVO analysis is one of the most commonly used methods for hydrocarbon reservoir exploration specially gas reservoir. In this method changes of amplitude versus offset caused by lithology and fluid content of formation are studied. AVO analysis usually is

The performed investigations within the recalculation f oil and gas reserves had allowed to make some changes in notion on deep structure of Balakhani-Sabinchi-Ramani fields. It had been determined that in the lower group of PS it had been formed by two u

Detailed structural - geological research was carried out around the Sudetic Marginal Fault, the most important tectonic structure in the NE part of the Bohemian Massif. The fault divides methamophic rocks like crystalline limestones, gneisses and schists

A case history of using seismic data to study Precambrian crystalline basement is described. The problem of the crystalline basement geological model creation is considered. It is shown that in the explored area information about the crystalline basement

The USGS World Petroleum Assessment1 performed in 2000 is a landmark assessment of the conventional oil and gas resources worldwide. The study provides a starting point to reassessing the potential undiscovered oilfields in Kuwait based on a geological a