Quantitative statistical method and device for granite buried hill weathering crust ridge amplitude
A statistical method and granite technology, applied in the field of rock drilling, can solve the problems of difficulty in effectively distinguishing cracks, grading of grooves and ridges, quantitative description of groove and ridge amplitudes, etc., and achieves the effect of more novel identification methods.
Active Publication Date: 2022-04-01
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 invention relates to a granite buried hill weathering crust ridge amplitude quantitative statistical method and device, and the method comprises the following steps: determining the size of a research region, carrying out the ancient landform restoration of the top surface of a target region buried hill through an impression method, and carrying out the interpolation to form a macroscopic ancient landform contour map; a curvature seismic attribute is adopted to automatically identify the micro-ancient landform-ridge of the top surface of the submerged mountain; dividing the levels of the trench and the ridge; determining a highest watershed interface; performing quantitative statistics on the ridge amplitude; and analyzing the ridge amplitude distribution rule. The method can identify the grade of the trench ridge, discriminate the amplitude of the trench ridge, summarize the distribution rule of the amplitude of the trench ridge, and achieve the purpose of indirectly predicting the cracks of different grades of the granite buried hill.
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