伊通盆地岔路河断陷梁家构造带万昌组储层特征  

Reservoir characteristics of Wanchang Formation in Liangjia tectonic belt of Chaluhe fault depression,Yitong basin,China

作　　者：董策[1] 朱建伟[1] 

机构地区：[1]吉林大学地球科学学院,长春130061

出　　处：《成都理工大学学报（自然科学版）》2012年第1期91-99,共9页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：全国油气资源战略选区调查与评价国家专项(14B09XQ1201);中国石油化工股份有限公司项目(GO800-6)

摘　　要：研究伊通盆地岔路河断陷梁家构造带万昌组储层特征,为寻找有利储层提供科学依据。利用大量岩心、测井、物性数据和沉积相资料,并通过薄片鉴定、铸体薄片观察、扫描电镜观察等方法,分析了古近系万昌组储层岩石的电性-物性-含油性的关系和储层砂体分布特征,探讨储层的物性特征及影响因素。结果表明声波时差与孔隙度具有较好的相关性,油层比油气层、气层、水层要求孔隙度和渗透率等物性下限高,万昌组的砂体主要分布在西南和东南2个方向。水下扇的中扇储层相对较好,主要为中孔中、低渗;外扇储层主要为低孔低渗储层,物性较差。万二、万三段物性最好,主要为中孔中渗;万一段储层物性次之,以中低孔、中低渗为主。储层的控制因素有埋深、粒度及分选性、沉积微相类型、成岩作用等。万昌组储层主要为中孔中渗储层,并且万二段和水下扇的中扇物性最好,是最有利的储集层位。The reservoir characteristics of Paleogene Wanchang Formation in the Liangjia structural belt located in the Chaluhe fault depression of the Yitong basin are researched for exploiting a favorable target. Based on a large quantity of cores, logs and the petrophysical data and by adopting microsection identification, casting thin-section observation, scanning electron microscope observation and so on, this paper analyses the relationship between the electric property （or oil-bearing property） obtained as follows. The porosity and acoustic transit time have good relativity. The porosity and permeability of the oil layer are higher than that of the oil-gas layer, gas layer, and water layer. The sand body of Wanchang Formation is primarily distributed in the southwest and southeast. The middle fan reservoir of the subaqueous fan is relatively better, mainly with medium porosity and medium to low permeability and the outer fan reservoir is relatively worse, mainly with low porosity and low permeability. The reservoir petrophysical property of Member 2 or 3 of Wanchang Formation is the best favorable, mainly with medium porosity and permeability and that of Member 1 of Wanchang Formation is the better favorable, mainly with medium to low porosity and medium to low permeability. The influential factors of the reservoir property are depth, grain size, separation, the type of sedimentary microfacies, diagenesis and so on. Therefore, the reservoir petrophysical property of Wanchang Formation is medium porosity and permeability. The reservoir petrophysical property of Member 2 of Wanchang Formation and the middle fan of subaqueous fan is the best. They are the most favorable reservoir beds.

关 键 词：伊通盆地 梁家构造带 万昌组 储层 物性 

分 类 号：TE122.23[石油与天然气工程—油气勘探]