the National High Technology Research and Development Program of China (No.SS2013AA060801);National Natural Science Foundation of China (No.51274210);12th National Science and Technology Major Project of Ministry of Science and Technology of China (No. 20112X05049-003-001-002)for financial support
Many wellbores are blocked by asphaltene deposits,which lead to production problems in the oilfield development process.In this paper,methods such as elemental analysis,and solvent extraction are adopted for the study...