Inversion modeling method based on fault control
A modeling method and inversion technology, applied in the direction of seismic signal processing, etc., can solve problems such as fault information response is not obvious, the continuity of the target layer is not good, etc., to achieve the effect of facilitating realization, simple form, and ensuring continuity
Active Publication Date: 2013-10-30
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] Faults are of great significance in the fields of solid mineral exploration, oil and gas exploration, earthquake prediction and forecasting, etc. However, the modeling methods in the above-mentioned commercial inversion software fail to make full use of seismic section interpretation information, and the models they build do not respond well to fault information. Obviously, the continuity of the target layer is not good
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0038] An inversion modeling method based on fault control, which uses seismic data and interpretation data (including fault lines and seismic horizons) stored in the SEGY standard format stored in the computer for processing, such as Figure 6 As shown, the method includes the following steps:
[0039] (1) Gridded seismic section
[0040] Coordinates of seismic horizons and fault lines were obtained from raw seismic data through structural interpretation ( Figure 6The "structural interpretation" in is to obtain the coordinates of seismic horizons and fault lines on seismic data. Generally, it is enough to have seismic data during gridding, but for the present invention, there are coordinates of seismic horizons or fault lines and recorded in the grid information, so that the grid data has seismic horizons and fault lines Line information), and then divide the sei...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an inversion modeling method based on fault control, and belongs to the field of oil gas and coal bed gas earthquake exploration and development. The inversion modeling method includes (1) meshing a seismic section; (2) defining a control line; (3) finding an intersection of a fault and the control line; (4) making a vertical line; (5) defining mesh special processing areas; (6) defining mesh properties of the mesh special processing areas; (7) carrying out interpolation calculation on the split mesh special processing areas by utilizing a wave impedance curve of well log data; and (8) carrying out vertical interpolation calculation on the non-mesh special processing areas by utilizing the wave impedance curve of well log data. By utilizing the inversion modeling method based on fault control, a more elaborating initial model is obtained, earthquake model data, which is more reliable and closer to a real earthquake structure, is provided for a variety of inversion methods, solution multiplicity of inversion is reduced, and mathematic and physical method employed in an inversion stage are guaranteed to have geological meanings.
Description
technical field [0001] The invention belongs to the field of seismic exploration and development of oil and gas and coalbed methane, and in particular relates to an inversion modeling method based on fault control. Background technique [0002] The modeling in seismic inversion is a broadband wave impedance model established by integrating seismic, interpretation data and logging data. When modeling, the requirements for the interpretation data relied on are relatively high. Generally, interpreters build models based on their own structural knowledge of a certain area and carry out forward modeling. However, there are errors between the forward modeling results and seismic data. It is necessary to continuously modify the model to gradually reduce the error. Finally get a satisfactory result. [0003] In the commercial inversion software Strata, the global initial wave impedance model is established by means of interpolation on the basis of establishing the initial seismic ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01V1/28
Inventor 宋志翔白俊雨苏凌杨文广杨强魏嘉岳承琪张杨仇正兰林庆富毕进娜
Owner CHINA PETROLEUM & CHEM CORP