姬塬油田池46井区长8_2油层组含油性影响因素研究  

The Study of Influence Factors for Chang-8_2 Reservoir in the Well Chi46 Area of the Jiyuan Oilfield

作　　者：任江丽[1] 朱玉双[1] 王振川 陈大友[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室/地质学系,西安710069 [2]陕西延长石油集团油气勘探公司,陕西延安716000

出　　处：《地质学报》2017年第2期479-486,共8页Acta Geologica Sinica

基　　金：国家科技重大专项(编号2008ZX05013-005)资助成果

摘　　要：通过钻井、录井、测井、岩芯分析化验数据以及试油、试采等生产数据综合分析,结合构造特征,总结姬塬油田池46井区长8_2油层组含油性影响因素。研究发现池46井区长8_2油层组含油状况受构造影响较小;沉积微相和砂体的展布与含油性有着较好的相关性,沉积微相和砂体的发育状况、平面连续性均受沉积因素控制,因此沉积因素是控制含油性的主要因素;储层物性、成岩作用对油气分布也有很大程度的影响;隔层和夹层在宏观和微观上均对油气起着封堵作用,既是油气成藏过程中的重要盖层,又对油气侧向运移起着阻碍作用,对储层含油性也有一定程度的影响。研究区长8_2油层组含油性主要影响因素是沉积作用和层间、层内非均质性,构造和成岩作用在局部范围内对含油性有影响。研究区储层含油性影响因素的系统研究,对于油藏评价、预测油气富集区带及下一步的滚动扩边和制定合理的开发方案有指导意义。Through well drilling,logging,core analysis,testing data,mining oil and production data,this study summarizes the factors influencing in the petroliferous properties of the Chang-82 reservoir in the Chi 46 area of Jiyuan oilfield,Ordos Basin in combination with structural characteristics.Our study suggests that structures have little impact on the petroliferous properties of the Chang-82 reservoir and the distribution of sedimentary facies and sand bodies has good relationship with oil-bearing properties.Development and continuation of sedimentary facies and sand bodies,controlled by deposition,are still the leading factor for petroliferous properties.Physical properties and diagenesis also put great influence on the distribution of oil and gas;the interlayers,which control transport and preservation for oil and gas,are not only important reservoir cap rock during the formation but hinder oil and gas migration process,imposing some impact on oil-bearing properties of reservoirs.The our result indicates that major factors in the Chang 82 reservoir oil are deposition and heterogeneity,with effect of structure and digenesis on the petroliferous properties in local areas.Systematic study on the factors influencing the oil reservoir in the study area is of some referential significance for future reservoir evaluation and prediction in the oil-and gas-enriched regions and surrounding areas as well as reasonable exploration planning.

关 键 词：含油性影响 构造 沉积作用 物性 遮挡层 池46井区 姬塬油田 

分 类 号：P618.13[天文地球—矿床学]