石油工业上游
石油工业上游-
石油工业上游服务市场的演变及其启示
The Evolution of the Service Market in the Petroleum Industry
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纳米技术在石油工业上游领域应用初探
Investigation of using Nano - tech in petroleum upstream industries
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加入世界贸易组织将对我国石油石化工业的上游核心业务（油气勘探与开发）、炼化企业、石油销售系统以及石油技术服务贸易产生重大影响。
China entering WTO will have great effects on the upstream business ( oil and gas exploration and development ), oil refining and chemical engineering enterprises , petroleum marketing system and petroleum technical service and trade .