油藏物理李一绪论 Oil or gas flow from reservoir to ground can be divided into three steps: First step,from reservoir to bottom hole Second step,from bottom hole to well head Three step,from wellhead to ground.油藏物理学——绪论 Oil or gas flow from reservoir to ground can be divided into three steps: First step, from reservoir to bottom hole Second step, from bottom hole to well head Three step, from wellhead to ground