Phillips Petroleum Company

Conocophillips Company

Conocophillips Company - I. P. Legal

William A Lucas

Dennis B Neff

John R Grismore

Steven B Wyatt

Edgar L Butler

Jesse E Layton

Jacquelyn K Singleton

Waveform data, such as reflection seismic data, is filtered by concurrently analyzing various phase angles of the data. The various phase angles of the data are compared to phase rotated background trends and the phase angle producing the maximum deviation from the equivalent background trend is selected as the optimum phase angle for predictive analysis or exclusion filtering.

Concurrent phase angle graphic analysis

A method for recognizing and comparing features of attribute data expressed in a 3D data survey involves: extracting, mapping, color coding and displaying 3D data for at least one attribute. Preferably, the data is based on tomographic paths. The tomographic paths are defined within a subvolume of instantaneous attribute data having the shape of a sphere. This is accomplished by extracting the subvolume of attribute data having a desired shape, defining multiple tomographic paths extending from a point within the subvolume to its bounding surface, combining instantaneous attribute values encountered along each of the tomographic paths to determine multiple aggregate values, mapping the thus determined aggregate attribute values on the surface of the sphere using a color code, and displaying the color coded sphere. The attribute maps are correlated with preexisting geological or stratographic templates to identify features.

Automated feature identification in data displays

An enlarged computer graphic image of seismic data is displayed on a concave three-dimensional surface having a shape corresponding to the shape of selected data extracted from a three-dimensional seismic volume. Thus providing an enlarged image of a seismic surface where the data is spatially correct in three-dimensions, and which increases the ease with which interpreters can locate geological features such as horizons, faults, and channels. An auxiliary paddle screen is provided to display an interactive video image for exploring the volume within the hybrid screen.

Method and apparatus for interactive curved surface seismic interpretation and visualization

A desktop based projector screen having an inner concave display surface upon which a video image or a series of images is projected with a sense of realism comparable with natural viewing of three-dimensional physical reality. The viewing surface combines three concave sections which are derived from solid figures including a dome, cylinder and a plane.

Three-dimensional hybrid screen having multiple viewing sections

A computer implemented method and apparatus is disclosed for automatically picking faults in a recorded 3D seismic trace data volume. The method employs test planes, which are mathematically inserted into the seismic data volume to approximate dip and azimuth of a potential fault plane surface. A large number of data points, which are selected points on the seismic traces, are defined within the seismic volume, such that each test plane positioned in the seismic volume contains data points corresponding to at least a significant portion of a trace. The method then determines a factor for each data point which is representative of the probability that the data point resides on a fault plane. This probability is based on planar discontinuity and average amplitude difference between corresponding traces in adjacent parallel test planes, and the method selects locations, in an x, y grid, of a strip of locations having high probability of residing on a fault surface. The strip of the selected locations is smoothed to a line and used to construct fault lineaments displays in seismic sections or time slices. The fault lineaments are stored in a computer data file, and conventional, stratigraphically enhanced, or other seismic data enhanced for seismic attributes is merged with the fault lineament files to create consolidated displays to aid interpretation of the data volume.

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Bartlesville, OK, United States of America

William A Lucas