Quantitative Evaluation Method of Seismic Exploration Observation System Based on Target Layer

An observation system and seismic exploration technology, applied in the direction of seismic signal processing, etc., can solve the problems of poor quality of the observation system, and achieve the effect of reliable principle, simple analysis, and easy analysis and comparison

CN109884698BActive Publication Date: 2021-04-27CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-04-27

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Abstract

The invention provides a method for quantitative evaluation of the seismic exploration observation system based on the target layer, including: designing the observation system parameters according to the geological tasks and technical requirements of the work area; establishing shot point sets and receiver point sets according to the designed observation system parameters and the boundary of full coverage times and the relational set of shot detection; establish models of all target layers according to the layer data interpreted by the seismic data in the work area; select a target layer and set the illumination calculation parameters; calculate the illumination energy of each panel of the selected target layer according to the designed observation system parameters ; Statistics of the maximum illumination energy ratio of each panel of the target layer; calculation of the mean square error of the illumination energy of the target layer; calculation of the comprehensive quality factor of the designed observation system; select other target layers for calculation according to the needs; according to the calculated comprehensive quality of the observation system of all target layers factor to evaluate the observation system. This method subdivides the illuminance energy, and conducts a comprehensive evaluation according to offset distance, azimuth angle, etc.
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Description

technical field

[0001] The invention relates to the field of oil and gas seismic exploration data acquisition and design, in particular to a quantitative evaluation method for a seismic exploration observation system based on a target layer. Background technique

[0002] Observation system evaluation work is mainly divided into two categories: the first category is based on the analysis method of common center point panel attribute. This method plays an important role in seismic data acquisition construction. It mainly includes coverage analysis, azimuth uniformity analysis, offset uniformity analysis and rose diagram uniformity analysis, etc., which have been proved to be practical and effective in the design of observation systems in many regions. This type of method exposes larger problems in areas with extremely complex surface and underground structures. The second type is the analysis method based on the surface elements of common reflection points. This type of met...

Examples

Embodiment 1

[0050] Example 1 is derived from a 3D seismic acquisition and observation system design project of Sinopec Shengli Oilfield. The work area is located in Dongying City, Shandong Province. The specific implementation methods are as follows:

[0051] (1) Two sets of observation systems were designed according to the geological tasks and technical indicators of the work area. The parameters of the observation systems are as follows: figure 2 ;

[0052] (2) According to the designed observation system parameters and the boundary of the full coverage times, the shot point set, the receiver point set and the shot detection relationship set are established;

[0053] (3) It is difficult to intuitively select a relatively more suitable observation system (such as image 3 with Figure 4 );

[0054] (3) Establish models of all target layers according to the horizon data interpreted by seismic data in the work area;

[0055] (4) Select the deepest target layer and set the lighting ca...

Embodiment 2

[0060] Example 2 is derived from a 3D seismic acquisition and observation system design project in the Xinjiang exploration area of ​​Sinopec Shengli Oilfield. The work area is located in the Xinjiang Uygur Autonomous Region. The specific implementation methods are as follows:

[0061] (1) Two sets of observation systems were designed according to the geological tasks and technical indicators of the work area. The parameters of the observation systems are as follows: Figure 7 ;

[0062] (2) According to the designed observation system parameters and the boundary of the full coverage times, the shot point set, the receiver point set and the shot detection relationship set are established;

[0063] (3) It is difficult to intuitively select a relatively more suitable observation system (such as Figure 8 with Figure 9 );

[0064] (3) Establish models of all target layers according to the horizon data interpreted by seismic data in the work area;

[0065] (4) Select the deep...