【摘要】 为了研究油气侵位对松辽盆地中浅层成岩作用和孔隙度衰减的抑制作用,本文系统的统计和分析了该盆地大量的孔隙度和含油饱和度岩芯分析数据。结果表明,所有探井储层的孔隙度与含油饱和度之间均呈正相关关系,储层含油饱和度越高,孔隙度越大,而且中部含油组合中萨尔图油层、葡萄花油层和高台子油层二者的相关性好于下部含油组合中扶余油层和杨大城子油层的相关性。由此可见,油气注入储层之后,可以有效地抑制储层的成岩作用,保护孔隙,而且油气注入越早,越有利于孔隙的保护。更多还原

【Abstract】 In order to study the diagenetic retardation and porosity reservation by hydrocarbon emplacement in the shallow-middle strata of the Northern Songliao Basin,lots of core porosity and oil saturation data were collected and analyzed.The results showed that positive correlations between porosity and oil saturation of the reservoirs were found in all exploratory wells.Moreover,the correlation coefficients of porosity vs oil saturation in the relatively younger strata,Saertu oil layer,Putaohua oil layer and Gaotaizi oil layer,were much higher than those of the relatively older strata,Fuyu oil layer and Yangdachengzi oil layer,suggesting that hydrocarbon emplacement in the reservoirs can halt,or at least significantly retard,diageneses and porosity reduction of the sandstones,the earlier hydrocarbon filled,the better porosity will be protected.更多还原