Well-side fracture-cavity reservoir fracturing crack determination method, device, equipment and medium

Abstract

The embodiment of the invention provides a method, a device, equipment and a medium for determining fractured fractures of a well-side fracture-cavity reservoir, and the method comprises the following steps: determining a first fracture density map according to dipole transverse wave far exploration acoustic logging information of an exploratory well; determining a second fracture density map according to the microseismic monitoring data of the exploratory well; and according to the first fracture density map and the second fracture density map, the development direction and development degree of the fracturing fracture are determined. According to the scheme, the development direction and development degree of the fracturing crack are determined by combining the first crack density map and the second crack density map, so that the fracturing crack can be evaluated more accurately in a wider range, the fracturing crack can be evaluated on the basis of time and space combination, and the evaluation accuracy of the fracturing crack is improved. Therefore, the joint evaluation of the reservoir transformation effect on different scales is realized, the accuracy of determining the fracturing crack is improved, and the effect of accurately guiding the design of the fracturing scheme is further achieved.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a method, device, equipment and medium for determining fracturing fractures in fracture-vug reservoirs beside wells. Background technique [0002] Conventional array acoustic logging can be used to effectively evaluate reservoir information near the borehole wall (usually within 3 meters), but it cannot identify hidden fractured reservoirs far away from the borehole wall. Although seismic exploration has the advantage of a wide detection range, it also suffers from low resolution. For the problem of small-scale reservoirs deep in the formation, neither of them can do anything. Reservoir evaluation techniques in seismic data interpretation usually only use well logging data from boreholes to provide support for fluid identification in seismic inversion, and it is difficult to achieve true well-seismic integration. [0003] The first generation of monopole longitudinal...

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Problems solved by technology

[0005] The embodiment of the present invention provides a method for determining fracturing fractures in fractured-cavity reservoirs beside wells to solve the technical problems of small detection depth and low resolution in fracturing fracture evaluation in the prior art

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