颗石灰岩与泥岩纹层状互层的储集性研究  

RESERVOIR CHARACTERISTICS OF INTERLAMINATED COCCOLITH LIMESTONE AND MUDSTONE

作　　者：董兆雄[1] 陈明[1] 滑双君[2] 何咏梅[2] 王书香[2] 

机构地区：[1]西南石油大学资源与环境学院 [2]大港油田分公司勘探开发研究院,天津300280

出　　处：《西南石油大学学报（自然科学版）》2007年第6期55-57,共3页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：四川省重点学科建设项目(SZD0414);西南石油大学课外开放实验项目研究内容

摘　　要：歧口凹陷古近系沙河街组一段广泛发育颗石灰岩与泥岩的纹层状互层，因其含油而被误认为“油页岩”。颗石灰岩的储集性一直未引起人们的重视。通过扫描电镜、密度测量、不规则样品孔隙度测量和测井资料解释等实验测试手段，着重研究了颗石灰岩的储集性。发现颗石灰岩中颗石片落粒间孔和粒内孔十分发育，且分布均匀，同时颗石灰岩与泥岩纹层状互层的平均孔隙度可达16．0％，渗透率为（1～100）×10^-3μm^2,良好的储渗性。因此，颗石灰去与沂．岩的纹层状巨层暑潜在的良好储层．且有开采价值．In the Es1 Formation in Qikou Sag, the interlaminated coccolith limestone and mudstone develops extensively, in some literature, it is classified as 'oil shale' because of the oil bearing. Predecessors have done many researches on the hydrocarbon accumulation potential of coccolithophorida, however, the reservoir characteristics research of coccolith limestone is still not taken seriously. So, through scanning electron microscope, density measuring, the irregular sample porosity measuring and well logging interpretation etc., the authors of the paper mainly research the reservoir characteristics of coccolith limestone. It is discovered that the inter granular pores and intra granular pores of coccoliths develop extensively and distribute evenly in coccolith limestone, and the average porosity of interlaminated coccolith limestone and mudstone can reach 16.0%, the permeability is (1~100)×10-3μm2 . So, coccolith limestone is of good reservoir property. The interlaminated coccolith limestone and mudstone is potential oil reservoir.

关 键 词：歧口凹陷 沙河街组一段 纹层状互层 颗石灰岩 储集能力 

分 类 号：TE122.2[石油与天然气工程—油气勘探]