Observing system method for primary collection of two-dimensional observing system and three-dimensional observing system
An observation system and three-dimensional technology, applied in the field of geophysical exploration, can solve problems such as inconsistency in acquisition time and poor comparative analysis
Active Publication Date: 2015-07-08
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
At present, the conventional observation system test can only test the two-dimensional observation system or the three-dimensional observation system alone. Due to the inconsistency of acquisition time, location, acquisition equipment and other factors, it is not possible to compare and analyze the three-dimensional observation system and the two-dimensional wide-line observation system in solving the target. Advantages in complex geological problems in the region
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[0015] figure 1 It is a flow chart showing an observation system method for one acquisition by a two-dimensional observation system and a three-dimensional observation system according to an embodiment of the present invention.
[0016] Such as figure 1 As shown, in step S10, previous geological data and seismic data of the target exploration area are collected.
[0017] In step S20, according to the collected geological data and seismic data, the receiving line spacing of the 3D observation system is consistent with the receiving line spacing of the 2D wide-line observation system, and the shot line spacing of the 3-D observation system and the 2D wide-line observation system Keep the same shot distance or keep the shot distance of the 3D observation system twice that of the 2D wide-line observation system, and make the shot distance of the 3D observation system the same as the shot distance of the 2D wide-line observation system keep the same distance.
[0018] In step S3...
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The invention provides an observing system method for primary collection of a two-dimensional observing system and a three-dimensional observing system. The observing system method comprises the following steps of collecting past geological data and earthquake data of a target exploration area; keeping a receiving line distance of the three-dimensional observing system and a receiving line distance of the two-dimensional observing system consistent according to the collected geological data and earthquake data; keeping a shooting line distance of the three-dimensional observing system and a shooting line distance of the two-dimensional observing system consistent, or keeping the shooting line distance of the three-dimensional observing system to be two times as much as that of the shooting line distance of the two-dimensional observing system; keeping a shooting distance of the three-dimensional observing system and a shooting distance of the two-dimensional observing system consistent; and in a process of combining the three-dimensional observing system and the two-dimensional observing system, overlapping a receiving line of the three-dimensional observing system with a receiving line of the two-dimensional observing system, and overlapping a shooting line of the three-dimensional observing system and a shooting point of a two-dimensional wide line observing system or arranging the shooting line of the three-dimensional observing system and the shooting point of the two-dimensional wide line observing system by being staggered for a half of a three-dimensional shooting line distance.
Description
technical field [0001] The invention relates to geophysical prospecting technology, more specifically, to a comprehensive testing technique for acquiring parameters of a seismic prospecting observation system. Background technique [0002] Seismic exploration is a technology that artificially stimulates and receives seismic waves, studies the propagation of seismic waves in the formation, and aims to find out underground geological structures and find oil and gas fields. The observation system in seismic exploration refers to the mutual positional relationship between the excitation point and the receiving point of seismic waves. At present, the commonly used seismic exploration observation systems in China mainly include two-dimensional observation system, two-dimensional wide-line observation system, and three-dimensional observation system. The seismic exploration observation system is usually described by a series of parameters. The two-dimensional observation system usu...
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IPC IPC(8): G01V1/00G01V1/22
Inventor 杜玉斌王勤耕张亚东张晓斌武铁岭文中平黄祥虎李大军赵玉华罗卫东
Owner BC P INC CHINA NAT PETROLEUM CORP