The district in dire need of oil and natural gas is mainly in east littoral, however, the resources are mostly imbedded in west area.

• 我国石油天然气的需求大部分集中在东部沿海地区，而我国的石油天然气资源大部分埋藏在西部地区，解决这一矛盾的方法就是大规模的建设油气输送管道。