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针对川北柏垭区块大安寨一亚段储层岩石孔隙结构差,属于致密储层的特点,对大一亚段的速敏性、水敏性、盐敏性、碱敏性和酸敏性进行了储层敏感性试验。结果表明,该段储层主要表现为弱速敏、中等偏强水敏、中等偏弱盐敏、无酸敏和中强碱敏。因此,在川北柏垭区块大安寨一亚段储层开发生产过程中应重点防治储层水敏性、盐敏性及碱敏性对储层带来的伤害,从而避免更大的经济损失。
In view of the poor pore structure of the reservoir rocks in the first member of the Daanzhai Section of the Baiya block in the North Sichuan Basin and belonging to the characteristics of tight reservoirs, the sensitivity to water sensitivity, salt sensitivity, alkali sensitivity and acid sensitivity A reservoir sensitivity test was conducted. The results show that the reservoirs in this section are mainly weak-sensitive, moderate-strong water-sensitive, moderately weak-sensitive, non-acid-sensitive and moderately strong-alkali-sensitive. Therefore, in the development and production of the first sub-section of Da’anzhai in Baiya block, Northwest China, we should focus on preventing reservoir water damage, salt sensitivity and alkali sensitivity to reservoir damage, so as to avoid greater economic losses .