延长油区低渗透油藏提高采收率技术对策

针对延长油田开发中存在的储层物性差,自然产能低;裂缝多,油井水淹严重;地层压力低,生产压差难以保证;注水启动压力高,注水效果差等主要问题,提出了加强储层研究、加强成熟技术推广应用、开展提高采收率方法适应性及潜力评价研究等提高采收率途径和对策。

Technical countermeasures for enhancing oil recovery in low-permeability reservoir of Yanchang oil region

Enhancing oil recovery is eternal theme in the oil-field development.Compared to the same type of oil fields home and abroad,recovery ratio of Yanchang oilfield is significantly lower,where the main issues exist such as poor reservoir properties,low natural production capacity,more cracks,serious water wells,low formation pressure which is so difficult to ensure the production of pressure,high-pressure water injection start,the poor watering effect,so the technical countermeasures for enhancing oil recovery in low-permeability reservoir of Yanchang oil region were proposed such as strengthening reservoir studies and the popularization and application of mature technologies,to carry out study on EOR methods-adaptability and potential evaluation.