The invention discloses a crack determination method based on unmanned aerial vehicle photography. Comprising the following steps: firstly, acquiring a plurality of orthographic aerial photos of a field outcrop by using an unmanned aerial vehicle; feature point extraction is carried out on the orthographic aerial photos of the field outcrops, and field outcrop orthoimages are obtained; performing digital mapping on the field outcrop orthoimage to obtain a distribution condition of a crack network at the field outcrop; and finally, measuring the distribution condition of the fracture network at the field outcrop to obtain the length-trend characteristic, the one-dimensional density, the two-dimensional connectivity and the breaking strength of the fracture network. According to the method, on the basis of the high-resolution unmanned aerial vehicle orthoimage, the digitized mapping and quantitative geometric measurement of the regional fracture network can be carried out, and the geometrical characteristics of fracture development can be reflected more objectively and truly, so that the method can better serve production and guide the selection of reservoir dominant regions, and the method has good application prospects. The exploration and development efficiency of fractured oil and gas reservoirs is improved, and huge economic benefits and social benefits are brought.

    本发明公开了一种基于无人机摄影的裂缝测定方法。包括以下步骤:首先利用无人机获取多张野外露头的正射航空相片;接着对多张野外露头的正射航空相片进行特征点提取,获得野外露头正射影像;再对野外露头正射影像进行数字化填图,得到野外露头处裂缝网络的分布情况;最后对野外露头处裂缝网络的分布情况进行测定,获得裂缝网络的长度‑走向特征、一维密度、二维连通度和断裂强度。本发明能够在高分辨率的无人机正射影像的基础上,开展区域裂缝网络的数字化填图和定量化几何测定,可以更加客观真实地反映裂缝发育的几何特征,使其更好地服务于生产,指导储层优势区的选择,帮助提高裂缝油气藏的勘探开发效率,带来巨大的经济效益和社会效益。


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    Title :

    Crack determination method based on unmanned aerial vehicle photography


    Additional title:

    一种基于无人机摄影的裂缝测定方法


    Contributors:
    DENG HONGDAN (author) / SUN QIAOYANG (author) / CHEN HANLIN (author) / YANG HAICHANG (author) / JI MO (author) / LI HONGYI (author) / SHI XUHUA (author) / CHENG XIAOGAN (author) / LIN XIUBIN (author)

    Publication date :

    2023-05-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01V Geophysik , GEOPHYSICS / B64C AEROPLANES , Flugzeuge / B64U / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



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