志丹地区长9储集层物性特征研究  

Study on Physical Property of Chang 9 Reservoir in Zhidan Region

作　　者：刘广伟[1] 田涛[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室/西北大学地质学系,陕西西安710069

出　　处：《地下水》2012年第3期206-207,219,共3页Ground water

基　　金："十一五"国家科技支撑计划基金项目资助(2007BAB1701)

摘　　要：长9储集层属于鄂尔多斯盆地延长组湖泊发育早期,油源关系复杂,前期的沉积作用和后期的成岩作用共同塑造了储层低孔低渗的特征。储层的物性是连结岩性和含油性之间的重要环节,加大对低孔低渗储层物性的分析,有利于储层其他方面特征的研究。在对储层孔隙度和渗透率作深入分析的基础上,使用反映储层孔隙度比较灵敏的声波时差测井曲线,来研究其物性特征。通过建立米产液量和声波时差的对应关系,确定声波时差下限,再根据声波时差和储层物性之间的关系式,最终确定储层孔隙度和渗透率下限,为储层含油性特征、有利区优选等方面的研究提供依据。The Chang 9 reservoir belongs to early development of the lake during Yanchang formation of Ordos Basin.The oil source is very complex,deposition effect and digenesis resulted in the low porosity and permeability characteristic of the reservoir.The physical property of the reservoir is an important link between lithology and oil,so it is favorable to study other characteristics of the reservoir that increase the analysis to the physical properties of low porosity and permeability reservoir.Firstly,The paper studies physical properties of the reservoir,on the basis of made an in-depth analysis about porosity and permeability of the reservoir,using the Acoustic time which is sensitive reflects the porosity relatively.Secondly,to determine the lower limit of acoustic time,it is based on establishment of the corresponding relations between the fluid production of per-meter and the acoustic time.Finally,to determine the lower limit of porosity and permeability for the reservoir,it is according to relationship between acoustic time and properties of the reservoir.The above can provide a basis for study of the oil-bearing characteristics of reservoir and favorable areas are preferred.

关 键 词：志丹 长9 孔隙度 渗透率 声波时差 物性下限 

分 类 号：P618[天文地球—矿床学]