镇泾油田长9储层四性关系及有效厚度下限研究  

Study on Four-property Relationship and Effective Thickness Lower Limit of Chang 9 Reservoir in Zhenjing Oilfield

作　　者：曲长伟[1] 张霞[1] 林春明[1] 陈顺勇[1] 陈召佑[2] 

机构地区：[1]内生金属矿床国家重点实验室南京大学,江苏南京210093 [2]中国石油化工股份有限公司华北分公司,河南郑州450006

出　　处：《辽宁化工》2013年第2期131-135,共5页Liaoning Chemical Industry

基　　金：国家自然科学基金项目(编号:41272124);南京大学"内生金属矿床成矿机制研究国家重点实验室"自主研究基金项目(编号:2009-II-11)共同资助

摘　　要：利用岩心分析、孔渗及试油试采等资料并结合测井资料对鄂尔多斯盆地镇泾油田延长组长9储层的"四性"关系进行研究,结果表明长9储层岩性主要为细—中粒长石岩屑砂岩和岩屑长石砂岩,成分成熟度低而结构成熟度较好;储集空间以溶蚀孔和原生粒间孔为主。其属于典型的中低孔特低渗储层,岩性和物性的差异控制了储层油气的富集程度。本次研究确定了长9储层有效厚度的岩性、物性和电性下限以及不同类型夹层的扣除标准,对研究区目的层段30多口井特低渗储层进行了精细评价处理,合理地剔除了钙质夹层和泥质夹层,确定了各油井的有效厚度,提高了研究区目的层段油藏测井解释和有利区预测的精度。On the basis of core analysis, geological and well testing data, combined with the log information, the four-property relations of Chang 9 reservoirs in Zhenjing Oilfield was studied. The results show that lithological characteristics of the reservoir are moderate-fine feldspar-debris and debris-feldspar sandstone, ingredient maturity is low, and structure maturity is medium. Chang 9 reservoir is typical middle pore low permeability oil layer with corrosion holes and intergranular hole as main reservoir space. The difference of lithological character and physical property controlled the oil reservoir accumulation degree. The elimination criterion of lithological, physical and electrical properties cutoffs and various interlayer for determining the effective thickness of oil layers was proposed. The fine evaluation and treatment on more than 30 wells in a certain extra-low permeability reservoir were carried out to eliminate the calcareous interlayers and muddy interlayers. The thickness of oil layers in every well was determined. This method can guarantee the precision of log interpretation and prediction of favorable zones in the layers.

关 键 词：特低渗透储层 四性关系 有效厚度下限 夹层扣除标准 镇泾油田 

分 类 号：TE122[石油与天然气工程—油气勘探]