渤南油田低渗高温欠注井伤害机理研究

文章系统地研究了渤南油田注水井伤害机理,从地层特性具有的潜在损害(粘土矿物、低孔低渗)、不适当酸化和重复酸化对储层的潜在损害、地层流体的潜在损害、储层敏感性损害因素及油层保护、以往增产措施等可能对低渗储层造成的损害进行了研究,得出相关结论,为渤南油田欠注井采取酸化增注措施提供了依据。

The Study of Damage Mechanism in Low-permeability and High-temperature Water-injection Wells of Bonan Oilfield

The damage mechanism of water injection wells in Bonan Oilfield is studied systematically in this paper. We drew some conclusions, according to analyzing and experimenting on the potential damage of formation characteristics(clay mineral, low porosity and low permeability), the potential damage of defective acidizing treatment and re acidizing treatment, the potential damage of formation fluids, the formation sensitivity damage and reservoir protection, the damage of low permeability formation of pre stimulation treatment. The results supply theory basis for acidizing treatment of water injection wells in Bonan Oilfield.