加大上游业务投资规模、油气储量多样化、优化资产结构、差异化发展可再生能源、扩大与资源国和新兴市场国家石油公司的合作,成为跨国石油公司的战略之选。 Increasing the scale of investment in upstream business, diversifying oil and gas reserves, optimizing asset structure, differentiating and developing renewable energy and expanding cooperation with oil companies in resource-based countries and emerging market countries have become strategic choices for multinational oil companies.