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Full-coverage automatic arrangement method for block-like template observation system

An observation system and full coverage technology, applied in the field of oil exploration, can solve problems such as incorrect observation system

Active Publication Date: 2012-05-16
BGP OF CHINA NAT GASOLINEEUM CORP
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Problems solved by technology

[0007] The existing full-coverage boundary layout methods of seismic exploration and acquisition projects are all based on the wire harness template, which can ensure that the wire harness template is correctly laid out according to the full coverage boundary, and when the PATCH template is laid out, the formed full coverage The coverage area is much larger than the required full coverage boundary, and the deployed observation system is incorrect. Therefore, it is necessary to adapt to the PATCH template to automatically deploy the full coverage boundary.

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  • Full-coverage automatic arrangement method for block-like template observation system
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  • Full-coverage automatic arrangement method for block-like template observation system

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Embodiment Construction

[0097] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0098] The PATCH type template is fully covered and automatically laid out, and its specific implementation method is as follows:

[0099] 1) Input the coordinate parameters of the receiving point and the excitation point according to the geological task, and establish a PATCH template, such as figure 1 is the parameter of the template, figure 2 For the template plan, determine that the target layer fully covers the exploration boundary area;

[0100] 2) According to the coordinates of each receiving point and excitation point in the template, calculate the center point coordinates of the offset pair connecting each excitation point and all receiving points, and these center points fall on the midpoint of the bin grid , the length and width of the bin are one-half of the excitation point distance and the receiving point distance respectively, and the number of the...

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Abstract

The invention discloses a full-coverage automatic arrangement method for a block-like template observation system in petroleum exploration. The method comprises the following steps of: (1) calculating the coverage times of a block-like template, and extracting parameters such as a longitudinal and transverse distance from a surface element node of the highest coverage times to a first excitation point; (2) rotationally converting a full-coverage boundary region to a simple coordinate system, the azimuth of which is zero degree, and calculating a minimum rectangle containing the full-coverage boundary; (3) calculating the longitudinal and transverse rolling times of the templates required to be arranged so that the minimum rectangle reaches full coverage; (4) calculating the length of the full-coverage small rectangle of lines of each bundle according to the parameters of the block-like templates and the longitudinal rolling times of the block-like templates; (5) calculating the coordinates of the first excitation point of the lines of each bundle according to the coordinates of the full-coverage small rectangle of the lines of each bundle and the parameters of the block-like templates, laying excitation points and receiving points, establishing an offset relation, and arranging a pile number; and (6) rotating the arranged observation system domain to the original azimuth coordinate system according to the azimuth. By the method, the design efficiency of the block-like template observation system is greatly improved.

Description

technical field [0001] The invention relates to petroleum exploration technology, in particular to a full-coverage automatic layout method for a block template observation system using the relative positional relationship between an excitation point and a receiving point and defined full-coverage boundary data. Background technique [0002] The main purpose of the full-coverage deployment of the 3D seismic acquisition and observation system is to generate spatially continuous seismic data volumes, that is, to arrange the locations of receiving points and excitation points, to define the full-coverage exploration boundary of the target layer, and to obtain the data that can systematically track the target layer. Seismic records, yielding a complete data volume of the target layer. In the application in the field of oil exploration, this step is one of the most important work in oil exploration. [0003] In conventional 3D seismic exploration, the layout of the full-coverage ...

Claims

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Application Information

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IPC IPC(8): G01V1/00G01V1/02G01V1/20
Inventor 姜建军胡斌蒋先艺杨剑宋卫锋李纪平
Owner BGP OF CHINA NAT GASOLINEEUM CORP
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