【摘要】 在采用CO2吞吐采油或CO2驱替过程中,CO2到达储层后与储层原油、地层水、储层岩石接触并发生的一些物理化学性质的变化,使得储层渗透能力也发生变化。针对此问题,利用取自某油田实际地层水样和储层岩石样品进行了CO2和地层水、储层配伍性实验研究。结果表明,在该实验条件下,CO2注入使得储层渗透能力普遍降低;岩心碳酸盐含量明显增大,储层岩石中产生了固相沉淀。更多还原

【Abstract】 When CO2 gets into reservoir,there are physical and chemical changes between CO2 and formation water,reservoir rocks,which changes the reservoir permeability.The compatibility study between CO2 and formation water,reservoir is conducted by using the samples of formation water and reservoir rocks in an oilfield.The result indicates that in the process of CO2 injection,the permeability of reservoir is reduced,the content of carbonate is increased obviously and the solid-phase precipitation have formed in the formation.更多还原