CAJ | 학술논문

储层非均质性对油气田的勘探和开发效果影响较大。结合岩心观察、薄片资料、扫描电镜、物性、录井等资料，对吴起地区长6油层组条带状含油分布特征进行研究。结果表明：层内非均质和微观非均质是造成单砂体条带状含油分布的主要原因，储层韵律段的粗粒部分含油性较好，层理密度大则含油性差；钙质夹层越发育的储层，含油性越差；胶结作用使孔隙结构复杂化，造成储层含油性不均；单砂体条带状含油分布形成不同的油水系统，导致油藏含有多个油水界面。研究成果对研究区进一步勘探、开发具有一定的指导意义。
저층비균질성대유기전적감탐화개발효과영향교대。결합암심관찰、박편자료、소묘전경、물성、록정등자료，대오기지구장6유층조조대상함유분포특정진행연구。결과표명：층내비균질화미관비균질시조성단사체조대상함유분포적주요원인，저층운률단적조립부분함유성교호，층리밀도대칙함유성차；개질협층월발육적저층，함유성월차；효결작용사공극결구복잡화，조성저층함유성불균；단사체조대상함유분포형성불동적유수계통，도치유장함유다개유수계면。연구성과대연구구진일보감탐、개발구유일정적지도의의。
The reservoir anisotropy has an important effect on the exploration and development of oil and gas fields. By combination of the core observation, thin section, scanning electron microscope, reservoir physical property and logging, the banding oil distribu?tion characteristics of Chang-6 reservoir in Yanchang formation of Wuqi area were studied. The results showed that the inner layer heterogeneity and micro-heterogeneity are the primary causes of banding oil distribution. The coarse grains of rhythm layer have higher oil potentials. The denser of beddings and calcareous interbeds developed have poor oil potentials. The cementation further complicates pore structure and causes uneven distribution of reservoir oil-bearing. The banding oil distribution in single sandstone form the different oil-water system and lead to the multiple oil and water interface of reservoir. The research has guiding signifi?cance for the further exploration and development of the resources in this area.