Advantageous percolation channel determination method, device and storage medium

Abstract

The invention discloses an advantage seepage channel determining method and device and a storage medium, and belongs to the technical field of oil field development. The method comprises the steps ofobtaining a target seepage rate, the oil saturation and target oil deposit index parameters of a target oil layer; when it is determined that an advantage seepage channel exists at the target oil layer according to the target seepage rate, the oil saturation and the target oil deposit index parameters, it is determined that the advantage seepage channel exists in the oil deposit, wherein the target seepage rate is a current seepage rate, and the target oil deposit index parameters are water absorption ratios, or the target seepage rate is an original seepage rate, and the target oil deposit index parameters include the seepage rate variation quantity and cross-well water through multiples and water injection efficiency of a target communication well group. By combining oil deposit dynamicand static production parameters and original oil deposit attributes and current oil deposit attributes, beginning from comprehensive assessment of various influence factors, it is determined that theoil deposit has the advantage seepage channel, the advantage seepage channel determination accuracy is improved, and the oil field development cost is lowered.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method, device and storage medium for determining a dominant seepage channel. Background technique [0002] In the process of oilfield water injection development, the injected water in the oilfield will form multiple seepage channels in the reservoir, and the flow of injected water will change the pore structure of some seepage channels in the reservoir, resulting in the permeability of these seepage channels. Compared with adjacent seepage channels, such seepage channels with enlarged permeability, stronger diversion capacity and strong mutation of fluid seepage characteristics are usually called dominant seepage channels. In the actual development process, the heterogeneous development of the reservoir will easily cause the injected water to rush along the dominant seepage channel, forming an inefficient or ineffective water injection cycle, and will cause the s...

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Problems solved by technology

[0005] The water absorption and liquid production profile analysis method only analyzes the water absorption and liquid production factors, and the accuracy of determining the dominant seepage channel is low, and this method needs to analyze and test the water absorption and liquid production profiles of multiple oil-water wells in the reservoir , and the analysis and testing of each oil-water well requires the cooperation of shutting down the well, which increases the development cost of the oil field and wastes the corresponding production time

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