曲堤油田Q104块沙四段储层特征研究  

Reservoir characteristics of Es-4 in block Q104 OF Qudi oil field

作　　者：康晓燕[1] 赵虹[1] 葛海影[1] 仵康林[1] 吴斌[1] 刘少红[1] 方玲玲 

机构地区：[1]长安大学资源学院,陕西西安710054 [2]胜利油田河口采油厂地质研究所,山东东营257200

出　　处：《内蒙古石油化工》2011年第4期112-115,共4页Inner Mongolia Petrochemical Industry

摘　　要：曲堤油田Q104块沙四段属于河流相沉积体系,通过对研究区岩芯观察、铸体薄片、X-射线衍射、扫描电镜、图像、粒度、岩芯常规测试以及测井二次解释成果等资料的分析,对储层岩石学特征、物性特征、孔隙类型及孔隙结构特征进行了详细的研究。储层岩石类型主要为灰、灰褐色粉、细长石岩屑或岩屑长石砂岩,成分成熟度和结构成熟度都较低,以泥质胶结为主,粘土矿物主要为伊/蒙间层、高岭石、伊利石、绿泥石,是本区最主要的潜在敏感性。储层物性多属中孔低渗、高孔中渗,储层孔隙度和渗透率具有很好的正相关性。储层面孔率在8-13%左右,储集空间以原生粒间孔为主,孔隙结构较好,属中小孔、中细喉型孔隙结构,储层的最大连通孔喉半径、孔喉半径均值以及中值半径与渗透率都有着较好的正相关性,渗透率与退汞效率具有很好的负相关性。Es-4 formation in block Q104 of Qu-di oil field is thought a fluvial depositional system.By observing the drilling cores and analyzing the data of the casting sheet images,X-ray diffraction,SEM,grain size analysis,routine test of cores,as well as logging interpretation,we studied the characteristics of petrology,physical property,pore structure,and pore types.In this area,the reservoir lithology is silt-fine grained feldspathic lithic arenite and lithic feldspathic arenite,the compositional maturity and the structure maturity of detrital component are low.Mud cements is the major cement type,and the clay minerals are mainly illite and albite.kaolinite,illite,chlorite,which are the primary potential sensitivities.its major physical property types are medium porosity and low permeability,and porosity and permeability have a very good positive correlation.Porosity is about 8-13%,and reservoir space is mainly primal grain porosity.Pore structure is characteristic of small hole and thin throat.The largest connected pore throat radius,the mean pore throat radius and the median radius have a good positive correlation with permeability.Permeability has a good negative correlation with withdrawal efficiency of mercury.

关 键 词：岩石学特征 物性特征 孔隙类型 孔隙结构特征 沙四段 曲堤油田Q104块 

分 类 号：TE321[石油与天然气工程—油气田开发工程]