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A Rapid Extraction Method of Seismic Section Data Across 3D Seismic Work Area
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A three-dimensional seismic and seismic profile technology, applied in the field of petroleum exploration, can solve problems such as the quality gap of seismic exploration data, save money, optimize the extraction of seismic profile data, and avoid the splicing of the work area.
Active Publication Date: 2021-02-12
GEOSOCKET BEIJING TECH CO LTD
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These data volumes have geometric boundary intersections in three-dimensional space, and multi-period data coverage. In addition, there are generally large gaps in the quality of multi-period seismic exploration data.
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Embodiment 1
[0031] Such as Figure 1 to Figure 2 As shown, the present invention provides a method for quickly extracting seismic section data across a three-dimensional seismic work area, comprising the following steps,
[0032] S1. Select a seismic survey line within the basin, define a plurality of sampling points equidistantly distributed on the seismic survey line on the seismic survey line, and obtain the coordinates of each sampling point;
[0033] S2. For each sample point, use the Ray Casting algorithm to obtain the 3D seismic work area to which each sample point belongs;
[0034] S3, according to the quantity of the seismic work area where each sample point is located, determine the number of sub-nodes corresponding to each sample point, and connect the sub-nodes of each sample point sequentially through different tie lines to form a network;
[0035] S4. Assign weights to each connection line and node, and use the shortest path method to obtain the vertex set of the shortest p...
Embodiment 2
[0054] Such as Figure 7 to Figure 8 As shown, in this embodiment, using the data extraction method proposed by the present invention, in 120 seismic work areas in actual petroleum seismic exploration, the data extraction of 220 km super-long section can be realized on the conventional server, and the final calculation result is across 16 three-dimensional seismic work areas , 50-second online data extraction and display, avoiding the splicing of 3D seismic work areas (conventional two 3D seismic work area splicing, the project cost is more than 100,000 RMB), and achieved good application and economic effects.
[0055] By adopting the above-mentioned technical scheme disclosed by the present invention, the following beneficial effects are obtained:
[0056] The present invention provides a method for quickly extracting seismic section data across a three-dimensional seismic work area. By using the method, the previous technical link that requires the original data splicing pro...
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Abstract
The invention discloses a rapid extraction method of data of a seismic cross-section crossing three-dimensional seismic work areas. The rapid extraction method comprises the steps that a seismic linecrossing thethree-dimensionalseismic work areas is selected on multiple crossedthree-dimensional seismic work areas within a basin;sampling points are selected at equal intervals on the seismic line;the Ray Casting algorithm is used for obtaining the three-dimensional seismic work areas in which the sampling points are located;the number of corresponding child nodes of the sampling points is determined according to the number of the seismic work areas in which the sampling points are located, andthe child nodes of the sampling points are connected in sequence to form a network through different linking-up wires;the linking-up wires and the nodes are given weights to achievevertex sets of the shortest path between the nodes in the network by using a shortest path method; andcorresponding seismic data are found out according to the vertex sets to make a seismic cross-section diagram of the three-dimensional seismic work areas. The rapid extraction method has the advantages that efficientand optimized seismic cross-section data extraction can be achieved;in the process of oil exploration, the procession of work area splicing can be avoided, anda great deal of money for a project canbe saved.
Description
technical field [0001] The invention relates to the field of petroleum exploration, in particular to a method for quickly extracting seismic section data across a three-dimensional seismic work area. Background technique [0002] In the process of petroleum exploration, 3D seismic exploration is widely used as an important technical means. Affected and restricted by topography, surface administrative area, underground detection target layer and investment, the construction area of a general 3D work area is within 100-200 square kilometers, and the data volume after processing is at the 10Gb level. With years of exploration, oilfield companies have gradually accumulated a large number of seismic work area data bodies. These data volumes have geometric boundary intersections in three-dimensional space, and multi-period data coverage. In addition, there are generally large gaps in the quality of multi-period seismic exploration data. In the actual oil exploration process, w...
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