青东凹陷沙河街组稠油成因及影响因素

青东凹陷西部和西南部边缘部位沙河街组广泛存在稠油油藏，目前在这些稠油的成因机制方面未开展深入研究，没有取得明确的认识，影响了研究区资源量评价和油气勘探进程。根据原油物理性质和生物标志物组成特征对研究区稠油的成因进行了综合分析。结果表明，研究区稠油中既存在有原生的低熟油，又分布有由次生作用（生物降解作用）产生的稠油，其中，低熟油主要分布在凹陷西南部的青东5井区；生物降解油主要分布在凹陷西部斜坡带及青东-青南过渡带，原油的降解等级为2~8级。原油的生物降解程度呈现出下轻上重、北轻南重的规律性变化。研究区稠油的形成与分布主要受有机质早期生烃、古地形、构造背景等因素影响。

Exploration of Pilot Comprehensive Reform on Petroleum Engineering Graduate Professional Degree Program

Southwest Petroleum University,a pilot university of comprehensive national reform of graduate professional degree program,has started cultivating high level instrumental and multifunctional engineering and management talents in the field of petroleum and natural gas engineering. Based on the experiences in the master of program of engineering for more than 20 years,we’ve consolidated the organization and structure and improved the management system. We also make amendments to the cultivation plan,and by drawing on various resources,we solve the problems which are key to the quality of talent cultivation. We believe that this pilot reform will contribute positive experiences in graduate degree program operation and management to universities in Sichuan and even across the nation.