川中南荷包场须二段储层发育控制因素  

The Main Controlling Control Factors of reservoir Development in the Second Member of the Xujiahe Formation in the Hebaochang Area, South-Center Sichuan

作　　者：朱涛[1] 段新国[1] 何丹[1] 彭昕[2] 

机构地区：[1]成都理工大学能源学院,成都610059 [2]中原油田地球物理测井公司,河南濮阳457001

出　　处：《四川地质学报》2015年第3期339-342,共4页Acta Geologica Sichuan

基　　金：国家科技重大专项四川盆地须家河组岩性气藏成藏机理研究(项目编号:2011ZX05001-005-03);国家自然科学基金四川盆地西部致密低渗砂岩气藏储层致密化进程及储层形成机理研究(项目编号:41202097)

摘　　要：川中南荷包场须二段储层主要以长石岩屑砂岩和岩屑长石砂岩为主,属于低孔低渗储层,但其储层物性明显高于上覆须六、须四段,综合岩心观察、铸体薄片分析鉴定、扫描电镜、物性参数及测井曲线等分析,研究发现,须二段储层主要受沉积作用和成岩作用,石英、岩屑不同成分对储层具有明显的影响,溶蚀作用(包括酸性条件下与碱性条件下的溶蚀)对储层具有明显的控制作用,绿泥石环边发育层段与欠发育层段储层具有明显的差异。The reservoir in the 2th Member of the Xujiahe Formation in the Hebaochang area, south-center Sichuan consists mostly of arkosic arenite, lithic feldspar sandstone with low porosity and low permeability whose reservoir physical properties is better than that of the 4th and the 6th Member of the Xujiahe Formation. Study of core, casting thin sections SEM, physical parameters and well log indicates that sandstone reservoir in the 2th Member of the Xujiahe Formation in the Hebaochang was controlled by sedimentation and diagenesis, and that different components such as quartz and lithic fragment has obvious influence on sandstone reservoir, dissolution under acidic and alkaline conditions has obvious influence on sandstone reservoir, too. Reservoir physical properties in the areas where chlorite rims of authigenic clay minerals were developed in the sandstone is better than that of the areas where chlorite rims were less developed.

关 键 词：须二段 储层 控制因素 川中南荷包场 

分 类 号：P618.13[天文地球—矿床学]