The Pigging Slug Control Methods for Multiphase Subsea Pipeline in Offshore Oilfield Regional Development

摘要

With the regional development of offshore oil field, the offshore oil and gas treatment and transportation system gets more and more complicated. Any change for the multiphase pipeline operation system such as shutdown, restart up, pigging, variation of the flowrates etc could arouse hydrodynamic or severe slugging also the terrain fluctuant. Severe slugging could interfere the downstream process system and even bring about damage. The article analyses three cases in an offshore oilfield multiphase pipeline during pigging operation, and aims at analyzing the slugging flow problem and control methods to provide experience for similar case.