user guide of structure interpretation v2.2.0
TRANSCRIPT
User guide of structure interpretation
1 Quick look
1.1 Introduction
In the structural interpretation module, can for seismic interpretation of the seismic data
volume, he 2D structure map location for structure interpretation, interpret data can be
extracted directly to the modeling module and rock mass structure modeling module.
Structural interpretation is not only an important way to explain the structure data, insufficient
data or fixed abnormal data complement structure modeling is effective means (Fig.1-1). Rock
models tend to be more complicated geometrical form, any complex shape can be obtained
through the structure interpretation of rock data, directly used for modeling complex rock
(Fig.1-2).
Fig.1-1 Structure interpretation data.
Fig.1-2 Rock interpretation data modeling.
1.2 Module relationships
Structural interpretation module provide data support for the structural modeling and rock
modeling (Fig.1-3)
1) Structural module loads interpretation data, structure model is set up.
2) Rock module loads interpretation data, complex rock model is set up.
Fig.1-3 Relationships between the structural interpretation modeling module and other modules.
1.3 Workflow
Based on the structure of the seismic data volume interpretation function, the data flow
oriented, interpretation the fault data, horizon model, rock data. Process as shown in the
figure below (Fig.1-4).
Fig.1-4Workflow.
1.3.1 Interpretation fault data
Through the way of human-computer interaction, based on the three 3D seismic section, 2D
seismic section and BMP bitmap interpretation fault data. Has explained the fault line can be
adjusted by editing the way, to interpret data more accurate and reasonable, loaded into the
tectonic fault model is set up directly after the module (Fig.1-5).
Fig.1-5 Fault interpretation data modeling process.
1.3.2 Interpretation horizon data
Interpretation horizon data method with the same fault. Use there are two kinds of horizon
interpretation data: one is the direct modeling (Fig.1-6), the second is used to correct
distortion formation, formation of supplement or missing data. In the second case, can be
directly in the distortion or missing parts, through the way of human-computer interaction for
a detailed explanation, after the module is loaded into the structure directly for horizon
modeling.
Fig.1-6 Horizon interpretation data modeling.
1.3.3 Interpretation rock data
Structure interpretation can be through the way of human-computer interaction, different
direction of section is established, the interpretation of the high rock data. Rock model is set
up directly after loaded into the module of rock (Fig.1-7).
Fig.1-7 Rock interpretation data modeling.
1.3.4 Load interpretation data
Load fault interpretation data and horizon interpretation data, first of all, data and associated
structure interpretation module structure, then, in the structure module extraction and interpret
data (Fig.1-8) .Load interpretation data when there are two of the original method: Clear the
original data and not to empty the original data.
Fig.1-8 Load interpretation data fault and horizon.
Load rock interpretation data, first of all,in the module to create complex rock model, then,
load interpretation data (Fig.1-9).
Fig.1-9 Load rock interpretation.
2 How to model a structure interpretation model
Please refer to the teaching video of Structure Interpretation
3 Special topic
3.1 The data source of structure interpretation
The data sources have four categories: 2D seismic data volume, 3D seismic data volume,
geological profile, and blank section.
1) 2D seismic data volume: the seismic profile (Fig.3-1).
Fig.3-1 2D seismic data volume.
Right click Structure interpretation, then activate new 2-D seismic, and the 2-D seismic
profile is imported. By right key-click on the import sub-nodes, the Load seismic data are
select (Fig.3-2), showing corresponding seismic attributes of the profile. Based on
two-dimensional structure of seismic profiles, structures are interpreted. Interpretation process
is illustrated in the reference video.
(a) (b)
Fig.3-2 Load seismic data are select.
2) 3D seismic data volume: SEG - Y file of 3D seismic data volume is seen as below figure1
(Fig.3-3). Interpretation process is in the reference video.
Fig.3-3 3D seismic data volume.
3) Profile interpretation
The New 2D seismic section can start by clicking right key of 2D seismic. The section lines
are drawn, and a new section is created (Fig.3-4 )
Fig.3-4 New 2D seismic section.
Right click profile node, choose Import BMP bitmap, and bitmap is shown in the profile
(Fig. 3-5).
Fig. 3-5 Import BMP bitmap.
Similarly, right click profile node, choose Edit anchor points, draw spot at any position of
the profile picture, and import its coordinates in the attribute column (Fig.3-6).
(a) (b)
Fig.3-6 Edit anchor points.
Generally the data source of anchor point coordinates can be got by two kind methods:Field
geological work record; planar graph for x, y from, and section map for the z value.
Then, the Homing profile is chosen under section node selection (Fig.3-7 ), and profile needs
to be repaired according to the geographical coordinates. Interpretation process is in the
reference video.
Fig.3-7 Homing profile.
4) Blank section. 2D seismic is chosen by right clicking Structural interpretation, without
browsing data. Right click the new 2D seismic section, draw lines to create a blank section in
the work area (Fig.3-8). Interpretation process is in the reference video.
Fig.3-8 New 2D seismic blank section.