摘要
根据广安构造须家河组钻测井及化学分析资料的研究,探讨了储层发育的控制因素。研究表明,广安构造须家河组储集岩以细～中粒岩屑砂岩和长石岩屑砂岩为主,储渗空间主要为残余粒间孔和粒内溶孔,物性较差,多属于孔隙型储层,裂缝—孔隙型较少。储层在纵向上主要发育于须六段下亚段中上部,须四段主要分布在中下部;平面上须六段储层主要集中在广安构造北翼101井区附近,须四段主要发育在广安构造西北翼106井区附近。储层特征主要受沉积、成岩和构造作用的共同控制。
This paper deals with the control factors of reservoir of the Xujiahe Formation in the Guang＇an structure based on the drilling core and logging data. The study indicates that the reservoir of the Xujiahe Formation consists mainly of fine- and medium-grained lithic sandstone and feldspathic litharenite with vestige intergranular space and intraparticle pore as main storage-permeable space. The pore predominates over crack-pore. The reservoir is mainly developed in the middle and upper of the Lower Submember of the 6th Member of the Xujiahe Formation near the well No. 101 and in the middle and lower of the 4th Member of the Xujiahe Formation near the well No.106. The reservoir characteristics are controlled by sedimentation, diagenesis and tectogenesis.
出处
《四川地质学报》
2009年第3期253-256,共4页
Acta Geologica Sichuan
关键词
须家河组
储集层
储层特征:川中广安
Xujiahe Formation
reservoir
reservoir properties
Guang an
Sichuan
