Heterogeneous reservoir horizontal well sand fluid output profile dynamic evolution simulation and prediction method

Abstract

The invention discloses a heterogeneous reservoir horizontal well sand fluid output profile dynamic evolution simulation and prediction method, relates to the technical field of oil and gas exploitation engineering, and by means of the method, the sand fluid output profile evolution process can be simply and rapidly simulated, formation fluid and formation sand output profiles under the given production condition and production time can be predicted. Key output parts, namely key control well sections and positions, are provided for sand control and water control tubular column design of the horizontal well, and the purposiveness and the comprehensive effect of sand control and water control are provided. By means of the method, the high-speed inflow position of the heterogeneous reservoir horizontal well can be rapidly recognized, the high-erosion occurrence position of the sand control and water control well completion screen pipe can be judged, the screen pipe structure can be guided and optimized, the high-erosion-resistance screen pipe can be used at the high-erosion-risk position, and the comprehensive erosion resistance of the well completion screen pipe can be improved. In addition, the maximum flow velocity of the actual local high-speed inflow position can be quickly calculated by using the local inflow coefficient provided by the invention, and the method is used for predicting and preventing the 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

Images