Simulation and prediction method for dynamic evolution of sand fluid production profile in horizontal wells in heterogeneous reservoirs

Abstract

The invention discloses a method for simulating and predicting the dynamic evolution of the sand fluid production profile of a horizontal well in a heterogeneous reservoir, and relates to the technical field of oil and gas exploitation engineering. Using the method provided by the invention, the evolution process of the sand fluid production profile can be simply and quickly simulated and predicted. The production profile of formation fluid and formation sand under given production conditions and production time provides key production locations for the design of horizontal well sand control and water control strings, that is, key control well sections and positions, and provides the purpose of sand control and water control and combined effects. The method provided by the present invention can quickly identify the high-speed inflow position of the horizontal well in the heterogeneous reservoir, judge the high erosion occurrence position of the sand control and water control completion screen, guide the optimization of the screen structure, and use it in the high erosion risk position High anti-erosion screen improves the comprehensive anti-erosion ability of the well completion screen. In addition, the local inflow coefficient provided by the present invention can be used to quickly calculate the highest flow velocity at the actual local high-speed inflow position, which is used for prediction and prevention of erosion damage rate.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation engineering, in particular to a method for simulating and predicting the dynamic evolution of sand liquid production profiles of horizontal wells in heterogeneous reservoirs. Background technique [0002] As an important technical means for oil and natural gas development, horizontal well technology has the advantages of long production well section (hundreds of meters to thousands of meters), large drainage area, and fast oil production speed. For horizontal wells in unconsolidated sandstone oil and gas reservoirs that are prone to sand production, the exploitation faces two thorny problems of sand production and water production. Sand control and water control of horizontal wells with long well sections are one of the core technologies to ensure normal production. [0003] In the production process of horizontal wells, it is generally considered or assumed that the inflow profi...

AI Technical Summary

Problems solved by technology

At present, the understanding of reservoir physical properties is mainly based on static data measured at the initial stage of development. There is a lack of simulation and prediction methods for the dynamic evolution of sand fluid production profiles in horizontal wells in heterogeneous reservoirs, resulting in sand control and water control in heterogeneous reservoirs. Measure optimization design lacks dynamic basis

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