KL油田明化镇组富砂型沉积储层特征研究

KL油田的主要含油层系为新近系明化镇组,砂岩含量高,储层发育,叠置连片分布,表现为富砂的沉积特征,地震资料品质不支持进行常规的单砂体描述。基于岩心、分析化验、测井曲线等资料,对KL油田明化镇组储层岩性特征、孔隙特征及物性特征进行分析,认为明化镇组储层为浅水三角洲沉积,储层具有特高孔、特高渗的特征。根据地震相特征,并结合沉积相和测井相,按储层发育特征将研究区储层分为三类,并提取振幅属性,刻画出砂体边界,对储量进行了重新认识。研究结果对油田开发方案的编制以及后期的生产调整具有重要意义。

Sand-rich sedimentary reservoir characteristics of Minghuazhen formation in KL oilfield

The main oil-bearing formation of KL oilfield is Neogene Minghuazhen formation,with the characteristics of high content of sandstone,developed reservoirs and superimposed distribution,being of the‘rich sand’sedimentary characteristics.The quality of seismic data cannot be used for conventional single sand body description.Based on the core,analytical testing,logging curve,and etc.,the characteristics analysis on reservoir lithology,pore features and physical properties was carried out.The analysis results indicate the reservoirs from Minghuazhen formation belong to shallow water delta deposits and the reservoir is characterized by high porosity and high permeability.Combined with sedimentary facies and logging facies,the reservoirs in the study area can be divided into three categories.After the extraction of the amplitude attribute,the sand boundary was portrayed,and the understandings on the reserves were renewed,which is of great significance for oilfield development plan and late production adjustment.