Method for establishing communication relationship between oil deposit wells

Abstract

The invention discloses a method for establishing a communication relationship between oil deposit wells. The method comprises the steps of dividing communication units, wherein a communication area between the oil deposit wells is divided into multiple communication units, the connecting area between every two well points corresponds to one communication unit, and the characteristic parameter of each communication unit comprises an average conductivity and a pore volume; calculating the single-well water-cut, and the single-well water-cut of each well point is calculated according to the average conductivity and the pore volume of each communication unit; calculating production performance indexes, wherein according to the single-well water-cut of each well point, the production performance indexes are calculated; correcting parameters, wherein fitting is conducted on the calculated production performance index of each well point and an actual production performance index of the well point, and then correction is conducted on the average conductivity and the pore volume of each communication unit. By the adoption of the method, mutual action of the wells can be reflected, the conditions that wells are stopped and an oil well is converted into water injection are considered, and the actual geologic features of the whole oil deposit wells are also considered.

Description

technical field [0001] The invention relates to the field of oil and gas field development, in particular to a method for establishing the connection relationship between oil reservoir wells. Background technique [0002] Fracture-vuggy reservoirs have the characteristics of strong random distribution of storage space and serious reservoir heterogeneity, and their fluid flow characteristics and oil-water flow rules are more complicated than those of conventional sandstone reservoirs. Performance evaluation has always been the difficulty and focus of oilfield development performance analysis and reservoir description. [0003] How to obtain the connection relationship between wells in this type of reservoir plays an important role in understanding the geological characteristics of the reservoir and the distribution of remaining oil, guiding the optimization of injection-production policies in the later stage, the adjustment of measures such as water plugging and profile contr...

AI Technical Summary

Problems solved by technology

However, the existing models generally have the following problems: (1) The model parameters have no clear geological meaning, and can only reflect the relative connectivity between wells, but cannot reflect the real geological characteristics between wells; (2) Only the relationship between injection and production wells is considered. The interaction between production wells is not considered, and the model itself cannot consider the situation of shutting do

Images