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NL2024626B1_METHOD FOR DETERMINING A MAIN CONTROLLING FACTOR OF A HIGH STEAM INJECTION PRESSURE AND OPTIMIZING A TREATMENT MEANS

专利基本信息
申请号NL2024626申请日2020-01-09
公开(公告)号NL2024626B1公开(公告)日2020-08-14
申请公布号NL2024626B1申请公布日2020-08-14
分类号E21B43/00分类土层或岩石的钻进;采矿
发明人LEITING SHI;SHIJIE ZHU;ZHONGBIN YE;SHANSHAN ZHU;PINGYA LUO;ZHENG SHU;XIAO WANG申请(专利权)人
UNIV SOUTHWEST PETROLEUM
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地址Chengdu City 610599 CN CN
摘要The present invention discloses a method for determining a main controlling factor of a high steam injection pressure and optimizing a treatment means, including the following steps. A, analyzing influencing factors of reservoir conditions on a steam pressure in a steam stimulation process of a heavy oil reservoir, and summarizing the influencing factors into two main controlling factors which affect a change of a fluid viscosity and reservoir permeability; B, analyzing a seepage force offluid crude oil in a target oil reservoir, and determining core influence parameters that hinder steam injection; C, analyzing a change ofa fluid resistance under different parameter conditions according to the core influence parameters in step B; D, using a gray correlation method in a mathematical method to analyze a contribution proportion of the influencing factors in step A, and determining the main controlling factors; E, determining the influencing factors according to the main controlling factors, and optimizing the treatment means. The present invention overcomes the conventional tedious analytical method, and can quickly determine the main controlling factor ofthe high pressure in the steam injection process and optimize the treatment technology.
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