摘要
为加快海拉尔盆地已探明石油地质储量的有效动用,以复杂断块油藏储层物性影响因素分析为指导,结合储层参数测井精细解释结果,对优势储层形成机理进行分析。结果表明:海拉尔盆地南一段沉积相及沉积微相类型控制着储层原始物性的变化,扇三角洲、辫状河三角洲及浊积扇3种沉积相类型中,辫状河三角洲的物性较好,其水下分流河道、扇三角洲水下分流河道和浊积水道为优势储层发育相带;压实作用和胶结作用均是造成海拉尔盆地储层物性变差,并导致现今储层微观孔隙结构格局的重要原因;受多种因素控制,储层随埋深增加物性变差,但发育有多个孔渗异常高值区带。该研究成果为未动用储量区块评价优选指明了方向,也可为其他类似区块的勘探潜力预测提供依据。
In order to speed up the effective use of proved oil reserves in Hailaer Basin, under the guidance of influencing factors of complex fault block reservoir, combining with fine logging interpretation results of reservoir parameters, this paper analyzed the formation mechanism of favorable reservoir. The results show that sedimentary facies and sedimentary microfacies types control the original reservoir properties change of the first member of Nantun Formation in Hailaer Basin. Among three types of sedimentary facies, the reservoir properties of braided river delta are slightly better than that of fan delta and turbidite fan. The braided river delta underwater distributary channel, fan delta underwater distributary channel and turbidite channel are favorable sedimentary facies belts. Compaction and cementation are the main causes for reservoir tightness, which leads to reservoir microcosmic pore structure nowadays. Controlled by various factors, the reservoir properties are getting worse and worse with increasing burial depth, but there developed several reservoir property abnormal high value zones. This study points out the direction for the non producing reserves research, and provides a useful reference for other similar block potential prediction.
出处
《岩性油气藏》
CSCD
北大核心
2015年第1期26-31,114,共7页
Lithologic Reservoirs
基金
国家重点基础研究发展计划(973)项目"火山岩油气藏的形成机理与分布规律"(编号:2009CB219300)资助
关键词
储层物性
沉积相
沉积微相
成岩作用
海拉尔盆地
reservoir properties
sedimentary facies
sedimentary microfacies
diagenesis
Hailaer Basin
