海上稠油多元热流体吞吐注采参数多因素正交优化研究

摘要

Multi - thermal - fluid huff & puff is relatively an economic and effective method in increasing offshore heavy oil productivity and the parameters of injection and production play an decisive part in the effectiveness of the huff & puff. To achieve a better development effectiveness,the parameters of injection and production should be rationally optimized. The multi -factor orthogonal analysis method is adopted based on the analyses of a single factor for the optimization of the parameters of injection and production of multi - thermal - fluid. The range analyses for a single factor and multiple factors show that the key factor affecting multi - thermal - fluid huff & puff is volume injected per cycle and the rank of the sensitivity parameters is volume injected,injection temperature ,steam quality,injection rate and soaking time in order. The optimization of the parameters provide a theoretical guide for field operation of multi - thermal - fluid huff & puff.%多元热流体吞吐是目前海上稠油热采技术中提高稠油产能的经济而有效的方法,而注采参数对吞吐的效果起着决定性的作用.为了取得较好的开发效果,必须对吞吐注采参数进行合理的优化和调整.对于多元热流体吞吐注采参数优化,在单因素分析基础上采用了多因素正交分析方法进行分析.通过单因素与多因素极差分析显示,影响多元热流体吞吐效果的显著因素是周期注入量,敏感性大小依次为周期注入量、注入温度、注入干度、注入速度、闷井时间,并优化出合理注采参数,从而为现场多元热流体吞吐注采参数的操作指标提供理论指导.