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针对致密油藏地质和工程特征,采用了地质工程一体化理念,结合致密油开采特点及SYT 6943—2013致密油地质评价方法行业标准,运用层次分析法(AHP)与灰色关联分析法(GRA)复合建模,形成了一套地质工程一体化框架下的复合数学建模办法。研究表明:基于复合数学模型的致密油地质工程一体化开采具有数学模型的严谨性与致密油相关研究成果的前瞻性,可用于指导致密油藏经济性开采。相关行业标准的融入与模拟结论的可行性分析加强了数学建模的可信性,极大减小了误差。选用的层次分析法(AHP)可将模糊定性的地质结论量化为科学权重,有效解决了因地质资料不足而造成的分析瓶颈;灰色关联分析法(GRA)可充分运用工程数据,找出开发突破口,分析开采手段与增产密切相关的工程因素,并逐个分析,剖析地质起因,为工艺改进奠定基础。运用地质工程一体化框架开展项目研究,运用数据量大、包含面广、模拟精度高、残差分析可靠,研究结果兼顾工程、地质双要素,可行性强。
In view of the geological and engineering characteristics of tight reservoirs, the concept of integrated geological engineering was adopted. Combined with the characteristics of tight oil production and the industry standard of SYT 6943-2013 tight oil geological evaluation method, the analytic hierarchy process (AHP) and gray relational analysis (GRA) Composite modeling, formed a set of geological engineering under the framework of composite mathematical modeling approach. The results show that the integrated geotechnical engineering based on compound mathematical model has the rigorousness of mathematical model and the prospective of the related research results of tight oil, which can be used to guide the economical exploitation of tight oil reservoirs. Feasibility analysis of relevant industry standards and simulation results has strengthened the credibility of mathematical modeling and greatly reduced the error. The selected analytic hierarchy process (AHP) can quantify the fuzzy qualitative geological conclusions into scientific weights and effectively solve the bottleneck caused by the lack of geological data; gray relational analysis (GRA) can make full use of engineering data to identify the development breakthrough , Analyzes the engineering factors closely related to the mining measures and stimulation, and analyzes and analyzes the geological causes one by one to lay the foundation for the process improvement. The project is carried out by using the integrated framework of geological engineering. It has a large amount of data, wide coverage, high simulation accuracy and reliable residual analysis. The research results take both engineering and geological factors into consideration and are feasible.