Controlled seismic source subarea simultaneous scanning excitation method
A simultaneous scanning and partitioning technology, applied in the field of geophysical exploration, can solve problems such as limitations, and achieve the effects of increasing the ratio, improving the shooting efficiency, and improving the excitation efficiency
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[0029] The present invention adopts following steps to realize:
[0030] 1) Divide the work area into A area and B area, A area is located on both sides of the work area near the border, and B area is located in the middle of the work area, such as figure 1 As shown, the work area is divided into 3 areas;
[0031] The said A area has two blocks, which are divided into A1 area and A2 area in sequence;
[0032] The respective length divisions of the A zone and the B zone are determined according to the following formula:
[0033] (L-l) / 3≤LA≤(L-l) / 2
[0034] In the formula: the length of the working area is L, and the minimum simultaneous excitation distance is l;
[0035] Length LA of zone A:
[0036] When LA=(L-l) / 3, every shot point in A district can scan simultaneously with the shot point in B district, as figure 2 As shown, the minimum distance between the pattern filling areas of A1 area and B area is l; when LA=(L-l) / 2, when the two shot points located in A area and ...
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