准噶尔盆地阜东斜坡中侏罗统头屯河组储层敏感性特征

阜东斜坡中侏罗统头屯河组储层是准噶尔盆地东部油气勘探的重要目的层，但储层敏感性复杂，是制约油气开发的重要因素之一。尽管头屯河组储层黏土矿物含量较低，但各种类型的黏土矿物均有发育，其中以蒙脱石和伊／蒙混层居多。通过流动性实验分析得出，阜东斜坡中侏罗统头屯河组储层以水敏性伤害最强，盐敏性和酸敏性伤害次之，这些均是造成各储层损害的主要原因。敏感性伤害程度与黏土矿物类型、孔喉大小及碎屑组分密切相关，因此在钻井、试油过程中应注重储层保护，尽量减小储层伤害。

Reservoir sensitivity of Middle Jurassic Toutunhe Formation in Fudong slope,Junggar Basin

Middle Jurassic Toutunhe Formation in Fudong slope is one of the important hydrocarbon objective layers in eastern Junggar Basin. The complex reservoir sensitivity restricted the development of oil and gas. Clay minerals are low in Toutunhe Formation, but the mineral types are rich, and various types of clay minerals are developed. The mixed-layer smectite and illite are most abundant. Through the liquidity experiments, the reservoir has the strongest water sensitivity, followed by salinity sensitivity and acidic sensitivity, which are the main reasons for the reservoir damage. The damage degree of the sensitivities is associated with the types of clay minerals, pore throat and clastic composition. The sensitivity analysis shows the importance of the process of reservoir protection in drilling and testingto reduce formation damage.