基于复合数学模型的致密油地质工程一体化开采理念与路线

Tight Oil Mining Method on Integration of Geology and Engineering based on the Compound Mathematical Model:Ideas and Routes

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。

According to the geology and engineering characteristics of the tight oil reservoir and SYT 6943- 2013 Geological Evaluating Methods for Tight Oil,compound mathematical modeling method based on the in tegration of geology and engineering was formed by using the method of analytic hierarchy process （AHP） and grey relational analysis （GRA） and the concept of the geological engineering integration.Research shows that： the tight oil mining on integration of geology and engineering based on the compound mathematical model has preciseness of the mathematical model and forward-looking of related research results of the tight oil, which can be applied for guiding the economic recovery of the tight oil reservoir.The introduction of the rel- evant industry standards and the feasibility analysis on the simulation conclusion reinforced the credibility of the mathematical modeling with few errors.The analytic hierarchy process （AHP） can turn the fuzzy and qual- itative geological conclusions to quantitative weights for science,and effectively solves the bottleneck caused by the lack of geological data.Grey relational analysis （GRA） can make full use of engineering data,find out the development breakthrough point,and analyze mining method and engineering factors closely related to the stimulation one by one and the geological origin.It lays the foundation for process improvement.Geological en- gineering integration framework is applied for project research with the large amount of data,wide range ,high simulation precision and reliable residual analysis.The results have strong feasibility for considering both engi- neering and geological factors.