储层砂体夹层定量研究初探——以东庄油田为例  

Quantitative Investigation on Reservoir Sand Body Interlayers——By Taking Dongzhuang Oilfield for Example

作　　者：刘铁岭[1,2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中石化河南油田分公司第一采油厂,河南桐柏474780

出　　处：《石油天然气学报》2012年第5期49-52,4,共4页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(41072087)

摘　　要：以东庄油田储层研究为契机,以取心化验和测井资料为基础,建立了适合东庄油田的孔隙度和渗透率解释模型,应用计算机编程的方法实现了按照测井深度间隔记录逐点计算储层物性,以此为基础探索性研究出夹层定量计算新方法,尤其是基于流体流动能力的渗透性夹层研究,丰富了夹层研究内容,不仅可确定出层内渗透性夹层的渗透率下限,而且可推广应用到层系的合理组合和划分上,增强了夹层研究成果的实用性。研究结果表明:东庄油田储层中夹层较发育,夹层频率2.3层/m,反映沉积水体震荡强烈;夹层密度28.7%,反映储层沉积时期水动力环境偏弱。平面上夹层发育程度主要受水动力条件控制,河道侧缘以及前缘席状砂等弱水动力沉积区夹层厚度较大,主河道等强水动力沉积区夹层厚度薄。By taking reservoir research in Dongzhuang Oilfield as a good chance and coring analysis and logging as the bases,a interpretation model of porosity and permeability suitable for Dongzhuang Oilfield was established.The method of computer programming was applied to realize the point-by-point calculation of reservoir physical properties through depth-logger interval records,on the basis stated above,a new method on interlayer quantitative calculation was put forward,especially the permeable interlayer research based on fluid flow ability,it enriched the content of interlay research.It not only could determine the lower limit of permeability of the permeable interlayer,it could also be applied to the reasonable combination and classification of strata series to enhance the practical application of interlayer research achivement.The research results show that the interlayers in Dongzhuang Oilfield are well developed with the interlayer frequency at 2.3,it presents serious shock of the sedimentary water bodies in the interlayer density of 28.7%,it reflects that hydrodynamic environment is weak during reservoir sedimentary periods.And it is pointed out that in the plane the interlayer developing degree is mainly controlled by the hydrodynamic conditions,that is,the interlayer thickness of weak hydrodynamic sedimentary areas such as channel margins and front sheet sand is larger,while in the strong hydrodynamic sedimentary areas such as the main channels,its thickness is small.

关 键 词：陆相储集层 夹层 渗透性夹层 定量识别 

分 类 号：P618.13[天文地球—矿床学]