Water breakthrough layer section early warning method for vertical well of fracture type reservoir based on water coning height

Abstract

The application provides a water-coning height-based crack-type oil reservoir straight well water breakthrough layer section early warning method and a storage medium, and belongs to the technical field of crack-type oil reservoir development. The method comprises the following steps: according to the characteristics of the crack-type oil reservoir, the production well is divided into a crack-type production well and a fracture-type production well; based on the radial flow theory, the water-coning height of the crack-type production well is calculated; based on the crack plate flow theory, the water-coning height of the fracture-type production well is calculated; based on the water-coning heights of the crack-type production well and the fracture-type production well, and in combination with the original oil-water interface, the highest water breakthrough layer sections of the crack-type production well and the fracture-type production well are determined. The method is based on the radial flow and crack plate flow theories, establishes a water-coning height calculation method for different types of production wells, can conveniently and quickly determine the water-coning height, and further determines the water breakthrough layer section of the production well.

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