我国的石油企业多为资金密集、技术密集的国有大中型企业，在当今的国民经济中居于重要地位，具有比较雄厚的经济实力。多年来在长期专业化石油勘探、开发和炼治活动中，形成了相对独立的经济技术优势，其中的许多企业连续多年取得了良好的经济效益，与之相联系，客观上也形成? China’s oil companies are mostly capital-intensive and technology-intensive state-owned large and medium-sized enterprises. They occupy an important position in the current national economy and have relatively strong economic strength. Over the years, in the long-term specialized oil exploration, development, and refining and management activities, relatively independent economic and technological advantages have been formed. Many of these enterprises have achieved good economic benefits for many years in a row. They are linked to each other and objectively formed.