Geophysical Experience

Mr. Olszewski has extensive experience using geophysical data. He has worked with both geologic and geophysical data throughout his career. Working either workstations or with paper sections, Greg has seismic experience in the following interpretation areas:

In addition to seismic experience, Mr. Olszewski also has some experience using gravity and magnetic data.

Structure

Structural interpretation is the most common and most important use of seismic data. Mr. Olszewski has interpreted and mapped massive amounts of seismic data from all over the world. This data has ranged in quality from excellent to poor. And as noted in the Geology section of this website, Greg has experience in most structural settings. This experience allows Greg to recognize opportunities that may otherwise be missed.

Velocity

Understanding the importance of rock velocities is critical in developing an accurate interpretation. The presence of a steep velocity gradient will greatly impact a structural interpretation. Mr. Olszewski uses all available velocity data to develop a the best possible velocity gradient.  The velocity gradient is integrated with time structure interpretations resulting in a depth structure map of high quality. Isopach maps can also be created and be depicted in thickness rather than time.

Attributes

Seismic attributes can reveal stratigraphic and fluid characteristics. When used with care, producing trends, gas bearing rocks, high porosity areas, and other useful exploration and development characteristics can be delineated. Mr. Olszewski has used seismic attributes to augment the interpretation of many exploration and development projects.

Inversion

Seismic inversion is a process whereby seismic data is processed in a manner that allows it to be displayed as rock velocities. The data may, but is not necessarily, calibrated to actual rock velocity data. The display is usually presented in color, the different colors representing velocity ranges. A panel of inverted seismic data can be thought of a continuous series of low frequency sonic logs. This type of display has several advantages and uses. Stratigraphic patterns become more evident, high porosity and gas zones are identifiable, and sequence boundaries are easier to detect. Mr. Olszewski has substantial experience using inverted seismic data both as part of lager projects and as a seismic inversion consultant.

Copyright © 2000 G. P. Olszewski