Volume fracturing horizontal well segmented clustering method and device

Abstract

The invention discloses a volume fracturing horizontal well segmented clustering method and device. The method comprises the following steps of determining each pre-selected segmentation point according to the segmentation number of a to-be-fractured section of a horizontal well; judging whether the variance of the fracturing potential value of each well logging point between every two adjacent pre-selected subsection points is smaller than or equal to a preset variance threshold value or not; if not, re-determining each pre-selected segmentation point; for each screened fracturing subsection,determining each pre-selected clustering point of the fracturing subsection according to the minimum cluster spacing and the maximum cluster spacing corresponding to the reservoir type of the fracturing subsection, and judging whether the average value of the fracturing potential values corresponding to the pre-selected clustering points is greater than or equal to a preset first average value threshold; if yes, determining each pre-selected clustering point as a clustering point of the fracturing subsection; and if not, re-determining each pre-selected clustering point of the fracturing subsection. According to the method, the sections to be fractured of the horizontal well to be subjected to volume fracturing can be reasonably clustered in a segmented mode, and the fracturing design canbe better guided.

Description

technical field [0001] The invention relates to the technical field of horizontal well fracturing design, in particular to a segmented clustering method and device for volume fracturing horizontal wells. Background technique [0002] At present, in the process of oil and gas production, volume fracturing of horizontal wells is an important means to improve the effective production of reservoirs and enhance the recovery rate, and the design of fracturing positions before fracturing, that is, the segmented and clustered design of horizontal wells Whether it is reasonable or not directly affects oil and gas production and ultimate recovery. [0003] At present, the existing segmentation and clustering design methods for horizontal wells have many limitations, and are usually uniform segmentation and clustering. When the heterogeneity of the reservoir is weak, the uniform segmentation and clustering have little effect on the fracturing effect; but when the heterogeneity of the ...

AI Technical Summary

Problems solved by technology

When the heterogeneity of the reservoir is weak, the uniform segmentation and clustering have little effect on the fracturing effect; but when the heterogeneity of the reservoir is strong, this uniform arrangement will lead to some fracturing points. Cracks fail to meet target requirements and sometimes fail to initiate

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