Study On Controlling Of Flow Field Characterization After Multicycles Of Steam Stimulation

Heavy oil resources are widely distributed in our country,has a great potential for exploitation value and mining,currently,steam stimulation is a major way of exploitation of heavy oil reservoir,but after many rounds of steam stimulation development,steam channeling is formed between Wells,lead to invalid water cycle,reservoir recorvering degree is not high,so should further improve the recovery degree of heavy oil reservoir,It is very important to study on heavy oil reservoir flow field control technology,analysis of heavy oil reservoir flow field distribution,for the guidance of heavy oil reservoir,thus the work is of great significance for tapping the potential of residual oil.In this paper,starting from the definition of reservoir flow field,according to the selection principle from the aspects of reservoir properties and fluid properties as flow field evaluation index,establishing comprehensive recognition model,flow field of heavy oil reservoir by three-dimensional physical simulation experimental research on the distribution features of the flow field,flow field were classified through the calculation of flow field intensity,gel plugging agent with a visual physical simulation research of the plugging mechanism,and control the flow field of actual work area by gel plugging agent.This paper finally choose oil saturation,fluid viscosity,reservoir pressure,permeability,the variation coefficient as evaluation index,the flow field intensity Ei determines the heavy oil reservoir,and through statistical method to determine the boundary between the flow field grade,has been clear about the gel plugging agent,plugging mechanism,improve the development efforts of Dan 56 vertical Wells of the actual work area.