EpiSeismic_SeismicGeometry3d

Derived From:

EpEntity_Entity, EpiSeismic_SeismicGeometry

Capabilties:

read

Column Summary
Type	Name and Description
String ro	KeyString Unique identifier for each table entry.
PointSeq ro req db	Extent The extent in the form of an array of points (total 4).
Float ro req db	InlineDelta The survey's inline increment.
Float ro req db	InlineEnd The survey's last inline.
Float ro req db	InlineStart The survey's starting inline.
ULong ro db	NumInlines The number of inline grid coordinates associated to the 3D survey.
ULong ro db	NumXlines The number of crossline grid coordinates associated to the 3D survey.
String ro req db	Project Data key string representing the project that contains this entity.
String ro db	SeismicBinGridDepthCS The SeismicBinGridSystem referenced to the survey's map depth coordinate system.
String ro db	SeismicBinGridTimeCS The SeismicBinGridSystem referenced to the survey's map time coordinate system.
Float ro req db	XlineDelta The survey's crossline increment.
Float ro req db	XlineEnd The survey's last crossline.
Float ro req db	XlineStart The survey's starting crossline.

 

Columns inherited from EpiSeismic_SeismicGeometry

Comment, Extent, MapDepthCoordinateSystem, MapTimeCoordinateSystem, Name, Notes, NoteTags, SeismicDatasets

 

Columns inherited from EpEntity_Entity

LastModifiedDate, Name, Project, ProjectName, StoreInstallationName, StoreType

 

Column Detail

KeyString

Unique identifier for each table entry.

SeismicBinGridTimeCS

The SeismicBinGridSystem referenced to the survey's map time coordinate system. The "referenced" XYT map system is created as zPositiveDown because the third axis is time which means for seismic volumes the times will always be positive. This is consistent with how the XYT coordinate systems are created for the EpiWell objects. This column will always be populated even if the survey only contains depth-based seismic datasets.

InlineDelta

The survey's inline increment. If InlineStart is less than InlineEnd the increment will be positive; otherwise, negative.

Project

Data key string representing the project that contains this entity.

XlineStart

The survey's starting crossline. XlineStart does not have to be less than XlineEnd.

NumInlines

The number of inline grid coordinates associated to the 3D survey.

SeismicBinGridDepthCS

The SeismicBinGridSystem referenced to the survey's map depth coordinate system. The "referenced" XYD map system is created as zPositiveUp because the third axis is elevation which means for seismic volumes the depths will always be negative below the seismic datum. This is consistent with how the XYD coordinate systems are created for the EpiWell objects. This column will always be populated even if the survey only contains time-based seismic datasets.

XlineEnd

The survey's last crossline. XlineStart does not have to be greater than XlineEnd.

NumXlines

The number of crossline grid coordinates associated to the 3D survey.

XlineDelta

The survey's crossline increment. If XlineStart is less than XlineEnd the increment will be positive; otherwise, negative.

Extent

The extent in the form of an array of points (total 4). Clients should always set the coordinate system when retrieving this column so they know the exact coordinate system the points are returned in; otherwise, the points will be returned in the default coordinate system and each vendor store might have a different default. The first point in the sequence identifies the survey's origin. All other points are in relation to this origin. The points are returned in the following order: (InlineStart, XlineStart) - survey origin, (InlineEnd, XlineStart), (InlineEnd, XlineEnd), (InlineStart, XlineEnd). This does not imply the SeismicBinGrid coordinate system (e.g. Inline/Xline axis) is the default coordinate system. You can specify a Map coordinate system but the first point returned will correspond to the (InlineStart, XlineStart) corner. Since the SeismicGeometry3d represents a two-dimensional "surface" mapping the third coordinate for each point will be zero since this coordinate represents the Z axis. The SeismicGeometry3d extents have no knowledge of the Z axis. It is very important the points are ordered correctly when doing INSERTS; otherwise, the inline/xline corner points will not be associated to the proper Map XY corner points.

InlineStart

The survey's starting inline. InlineStart does not have to be less than InlineEnd.

InlineEnd

The survey's last inline. InlineStart does not have to be greater than InlineEnd.