混相驱中气体示踪剂优选方法研究

Research of optimum screening method for gas tracers in miscible flooding

鲜波 熊钰 孙良田

Xian Bo Xiong Yu Sun Liangtian

西南石油大学, 四川 成都 610500

Southwest Petroleum University, Chengdu 610500, China

在混相驱开发的油藏中注入各类气体示踪剂, 来了解注入流体和被驱替流体在油藏多孔介质中的流动特征的方法是混相驱油藏开发动态监测的重要手段之一。在对国内外有关气体示踪剂文献调研的基础上, 综合分析各种影响气体示踪剂在油藏多孔介质中流动特征的参数, 建立敏感参数库和对应的评价指标体系;结合油层物理和油藏工程评价方法, 在对相应评价指标进行量化的基础上, 引入现代决策分析方法, 利用基于理想最优化方案的指标赋权法, 建立了混相驱中候选气体示踪剂进行筛选排序和综合评价方法, 该方法可从总体上体现各种因素对候选气体示踪剂优选的综合影响。

The way of tracer technology to research the injected and the dispersed liquid's flow characteristic in miscible flooding by injecting some gas tracer has been proved to be an efficient method. Based on the research of many literatures about gas tracer, analyzing many interrelated characteristic factors about gas tracer flowing in porous medium, a parameter pool and a corresponding target of evaluation system is built up by selecting hypersensitive parameters. By uniting the knowledge of Petrophysics and Reservoir Engineering evaluation, rating the evaluation of target, introducing decision-making method, utilizing the best project, builds a new integrating evaluation and filtrating way in the miscible reservoir. It indicates every sensitivity factor's integration influence on the result of gas tracer election.

油气藏地质及开发工程国家重点实验室基金项目资助(基金编号:PLN0118);西南石油大学第四批研究生创新基金项目资助(基金编号:CXJJ0416)