Quantitative statistical method and device for the amplitude of grooves and ridges in the weathered crust of granite buried hills
A statistical method, granite technology, applied in the field of rock drilling, can solve problems such as difficult to effectively distinguish cracks, quantitative description of groove and ridge amplitude, and grading of groove and ridge, and achieve the effect of more novelty in the identification method
Active Publication Date: 2022-05-17
CNOOC RES INST +1
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However, this method does not classify the grooves and ridges, nor does it quantitatively describe the amplitude of the grooves and ridges, so it is difficult to effectively distinguish cracks of different levels in actual work
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[0045] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0046] The invention provides a quantitative statistical method for the amplitude of weathered crust grooves and ridges of granite buried hills, which can automatically identify the grooves and ridges of buried hill weathered crusts for the first time, effectively making up for the defect that there is no automatic identification method at present, and the identification method is more novel; Compared with the traditional qualitative estimation ...
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The present invention relates to a method and device for quantitatively counting the amplitude of grooves and ridges in the weathered crust of granite buried hills, wherein the method includes the following steps: determining the size of the research area, using the impression method to restore the paleogeomorphology on the top of the buried hill in the target area, and interpolating to form Macroscopic paleogeomorphology contour map; using curvature seismic attributes to automatically identify micro-paleogeomorphology on the top of the buried hill—the ridge; divide the ridge level; determine the highest watershed interface; make quantitative statistics on the amplitude of the ridge; The distribution law of groove and ridge amplitude is analyzed. The invention can identify the order of the ridges, judge the amplitude of the ridges, summarize the distribution law of the amplitudes of the ridges, and further achieve the purpose of indirect prediction of fractures of different levels in granite buried hills.
Description
technical field [0001] The invention relates to the technical field of rock drilling in oil and gas exploitation, in particular to a quantitative statistical method, device, computer storage medium and equipment for the amplitude of grooves and ridges in weathered crusts of granite buried hills. Background technique [0002] Studies have shown that about 40% of the bedrock buried hill oil and gas field reservoirs in the world are granite, and its reserves account for about 75% of the bedrock oil and gas field reserves. Among them, the Baihu Oilfield in Vietnam is more typical. In recent years, with the discovery of large-scale granite oil and gas reservoirs in the Bohai Bay Basin and the Pearl River Mouth Basin in China, their research has gradually attracted attention, and the prediction of fractured high-quality reservoirs has always been the focus and difficulty of research. [0003] The practice of buried hill exploration and development shows that different levels of fa...
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IPC IPC(8): G01V1/30
Inventor 米立军宋来明梁旭杨烁
Owner CNOOC RES INST