Time-lapse (4D) seismic data sets have proven to be extremely useful for reservoir monitoring. Seismic-derived impedance estimates are commonly used as a 4D attribute to constrain updates to reservoir fluid flow models. However, 4D seismic estimates of P-wave impedance can contain significant errors associated with the effects of seismic noise and the inherent instability of inverse methods. Th...

Coda-wave interferometry is a technique to detect small seismic velocity changes using phase changes in similar waveforms from repeating natural or artificial sources. Seismic interferometry is another technique for detecting seismic velocity changes from cross-correlation functions of ambient seismic noise. We simultaneously use these two techniques to clarify seismic velocity changes at Sakur...

Several studies have sought to establish the link between the characteristics of a corporation and the audit fees charged by its auditor. Many studies have tried to discover whether auditor specialization affects audit fees. Other research has attempted to discover the effects of government regulation on fees. The impact of risk on audit fees has also been examined, but has proved to be an elus...

Seismic modeling aids the geophysicists to have a better understanding of the subsurface image before the seismic acquisition, processing, and interpretation. In this regard, seismic survey modeling is employed to make a model close to the real structure and to obtain very realistic synthetic seismic data. The objective of this study is to analyze the resolution and illumination of the fault by...

In the Netherlands, the second decade of the nineteenth century not only saw the end of the socalled 'French period', but also the publication of a Dutch version of Lindley Murray's English Grammar. Is there any relation between the two ? One might argue that there was. In 1795, when Murray's English grammar was published in York, the federalist Republic of the Seven United Provinces was transf...

Fannie Mae and Freddie Mac, the two large government-sponsored enterprises (GSEs) that are at the center of US residential mortgage finance, are “elephants in the room” that are being ignored as part of broad-brush financial sector reform. Neither the Dodd–Frank Act nor recently proposed overhauls of Dodd–Frank have addressed reform of the GSEs’ structures, although the GSEs were placed in gove...

Internet economy is a new economic phenomenon generated in information network era and has become an essential element of economic development and social operation. Due to the characteristics of height credit, virtualization of economic forms and changing patterns in the Internet economy, the massive illegal criminality also has produced in different forms at the same time, which necessitates g...

3D visualization is an important link in seismic data processing and interpretation, and the development of the microcomputer system of 3d visualization software for seismic data is very necessary. This paper uses MFC (Microsoft Programming Interface) and VTK (Visualization Toolkit) building three-dimensional scene, realizing the 3d seismic data field Visualization display system and determinin...

Prestack seismic data carries much useful information that can help us find more complex atypical reservoirs. Therefore, we are increasingly inclined to use prestack seismic data for seismic facies recognition. However, due to the inclusion of excessive redundancy, effective feature extraction from prestack seismic data becomes critical. In this paper, we consider seismic facies recognition bas...

Introduction: Understanding the origin and evolution of planets remains a major challenge since direct interrogation of planetary interiors other than Earth is either limited or not (yet) available. Seismic analyses provide the most detailed picture of present-day internal elastic structure and sources of seismic energy, but collecting seismic data represents a unique logistical challenge which...