EpiSeismic_PostStack3d

Derived From:

EpEntity_Entity, EpiSeismic_SeismicDataset

Derivatives:

EpiSeismic_BrickVolume

Capabilties:

read

Column Summary
Type	Name and Description
String ro	KeyString Unique identifier for each table entry.
Float ro req db	InlineDelta The PostStack3d's inline increment.
Float ro req db	InlineEnd The PostStack3d's last inline associated (full extent).
Float ro req db	InlineStart The PostStack3d's starting inline (full extent).
ULong ro db	NumInlines The PostStack3d's number of inline grid coordinates (full extent).
ULong ro db	NumXlines The PostStack3d's number of crossline grid coordinates (full extent).
String ro db	SeismicBinGridCS The SeismicBinGrid coordinate system associated with the PostStack3d.
String ro req db	SeismicGeometry The SeismicGeometry3d associated with the PostStack3d.
String ro db	StorageOrder Identifies how the seismic "bulk" data is physically stored on disk.
String ro req db	StorageOrganization A more generalized description related to how the seismic data is stored on disk (TRACE, SLICE, BRICK).
Float ro req db	XlineDelta The PostStack3d's crossline increment.
Float ro req db	XlineEnd The PostStack3d's last crossline (full extent).
Float ro req db	XlineStart The PostStack3d's starting crossline (full extent).

 

Columns inherited from EpiSeismic_SeismicDataset

ActualExtent, Comment, CompressionFactor, DeltaZ, DomainType, Extent, MaxZ, MinZ, Name, NumSamplesPerTrace, NumTraces, OwnedByProject, SampleDataType, SampleKind, SampleMax, SampleMin, SampleUnit, SeismicElevationDatum, SeismicElevationDatumUnit, SeismicElevationReference, StorageDataType, UnitsZ

 

Columns inherited from EpEntity_Entity

LastModifiedDate, Name, Project, ProjectName, StoreInstallationName, StoreType

 

Column Detail

KeyString

Unique identifier for each table entry.

InlineDelta

The PostStack3d's inline increment. If InlineStart is less than InlineEnd the increment will be positive; otherwise, negative. The PostStack3d's inline increment must be a multiple of the SeismicGeometry3d's InlineDelta. If the inline increment is larger than the survey's this indicates the volume is decimated (depopulated) along this axis.

SeismicGeometry

The SeismicGeometry3d associated with the PostStack3d.

XlineStart

The PostStack3d's starting crossline (full extent). XlineStart does not have to be less than XlineEnd. The crossline range can be less than or equal to the parent SeismicGeometry3d's crossline range but cannot be larger.

NumInlines

The PostStack3d's number of inline grid coordinates (full extent).

StorageOrder

Identifies how the seismic "bulk" data is physically stored on disk. TRACE volumes are either INLINE_XLINE_Z or XLINE_INLINE_Z. SLICE volumes are either Z_INLINE_XLINE or Z_XLINE_INLINE. BRICK volumes can have a variety of orders. The storage order indicates the order of the axes, with the slowest-changing index first and the fastest last. Think of the three-dimensional volume represented in a one dimensional array. The storage order indicates how the three dimensions are mapped to the one-dimensional array. The ordering of the data is very important for performance reasons and should be taken advantage of when the client application has a choice of how to access the data from the seismic volume. Retrieving the data in the storage order will result in the fastest access. For example, if the storage order is INLINE_XLINE_Z this represents a vertical orientation with Samples varying fastest and Inline varying slowest on disk. INLINE_XLINE_Z storage order represents an Inline optimized volume. Much faster to retrieve an Inline plane (2D data plane is comprised of the Crossline/Samples seismic amplitude values) as opposed to retrieving a Crossline plane (2D data plane is comprised of the Inline/Samples seismic amplitude values). The devkit and operating system can perform the read much more efficiently reading the data in the same order that it is physically stored on disk. Some vendor stores (e.g. SeisWorks) do not store how the traces are physically stored on disk. The StorageOrder for TRACE volumes defaults to INLINE_XLINE_Z when the storage order cannot be determined from the vendor store.

SeismicBinGridCS

The SeismicBinGrid coordinate system associated with the PostStack3d. If the DomainType is TIME this will be identical to the SeismicGeometry3d's SeismicBinGridTimeCS column. If the DomainType is DEPTH this will be identical to the SeismicGeometry3d's SeismicBinGridDepthCS column.

XlineEnd

The PostStack3d's last crossline (full extent). XlineStart does not have to be greater than XlineEnd. The crossline range can be less than or equal to the parent SeismicGeometry3d's crossline range but cannot be larger.

StorageOrganization

A more generalized description related to how the seismic data is stored on disk (TRACE, SLICE, BRICK). TRACE volumes are optimized for vertical orientation (inline/xline). SLICE volumes are optimized for horizontal orientation (slices). BRICK volumes can be optimized in a variety of orentations.

NumXlines

The PostStack3d's number of crossline grid coordinates (full extent).

XlineDelta

The PostStack3d's crossline increment. If XlineStart is less than XlineEnd the increment will be positive; otherwise, negative. The PostStack3d's crossline increment must be a multiple of the SeismicGeometry3d's XlineDelta. If the crossline increment is larger than the survey's this indicates the volume is decimated (depopulated) along this axis.

InlineStart

The PostStack3d's starting inline (full extent). InlineStart does not have to be less than InlineEnd. The inline range can be less than or equal to the parent SeismicGeometry3d's inline range but cannot be larger.

InlineEnd

The PostStack3d's last inline associated (full extent). InlineStart does not have to be greater than InlineEnd. The inline range can be less than or equal to the parent SeismicGeometry3d's inline range but cannot be larger.