Comprehensive identification method for dominant seepage channel of water-drive reservoir

Abstract

The invention relates to a comprehensive identification method for a dominant seepage channel of a water-drive reservoir. The method is based on fine geological modeling; an inter-well streamline distribution characteristic model based on the dominant seepage channels is established, then the dominant seepage directions are comprehensively identified through a correlation degree analysis method and a multiple linear regression (MLR) method, the method is simple, high in precision and low in cost, has the real-time performance and other characteristics, and can meet the requirement for recognizing the dominant seepage channels of most water-drive reservoirs. A dominant seepage channel of the water-drive reservoir can be obtained through simple analysis and calculation, good guiding significance can be achieved for improving the water-drive development effect in the later period of the water-drive reservoir, and a good reference function is provided for early prevention and early warningand efficient continuous development of the reservoir in the medium-low water cut period.

Description

technical field [0001] The invention discloses a method for comprehensive identification of dominant seepage channels in water drive reservoirs, and relates to the application of identifying dominant seepage channels in water drive reservoirs in exploration and development technology. Background technique [0002] In the process of exploration and development of water flooding reservoirs, the impact of the reservoir's dominant seepage channels on later development cannot be ignored. In order to achieve good development results when adjusting well pattern, optimizing secondary development, and implementing tertiary oil recovery technology, first What needs to be clarified is the current state and restrictive factors of the formation. Therefore, clarifying the formation mechanism of dominant seepage channels, finding the influencing factors of dominant seepage channels, and using scientific, accurate and comprehensive methods to identify dominant seepage channels are important...

AI Technical Summary

Problems solved by technology

However, there are also some disadvantages. For example, it is difficult to quantitatively explain the parameters of high permeability zones or dominant seepage channels between wells with commonly used chemical tracers. Radioactive isotope tracers are due to safety and environmental protection problems, and stable isotope tracers are due to high implementation costs. Field application has been limited in recent years

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