CAJ | 학술논문

烃源岩生成的油气要经过一定距离的二次运移后才能在有效的圈闭中聚集成藏，因此油气二次运移的过程对于油气最终聚集率有很大的影响。原油的二次运移过程可分为活塞式和优势式，天然气二次运移是一种由活塞式和优势式两种基本运移方式组成的断续式运移。二次运移模式的不同导致了油气运移路径的稳定性存在差异，采用染色煤油和氮气分别进行二次运移过程物理模拟实验，通过多次充注的方式探讨油气二次运移通道稳定性，并结合油气水物性特征差异及其与孔隙岩石的关系分析了其成因机制。认为原油二次运移过程中形成比较稳定的运移通道，运移效率较高；天然气二次运移过程中形成一种动态的相对稳定的运移通道，运移散失量较大。
경원암생성적유기요경과일정거리적이차운이후재능재유효적권폐중취집성장，인차유기이차운이적과정대우유기최종취집솔유흔대적영향。원유적이차운이과정가분위활새식화우세식，천연기이차운이시일충유활새식화우세식량충기본운이방식조성적단속식운이。이차운이모식적불동도치료유기운이로경적은정성존재차이，채용염색매유화담기분별진행이차운이과정물리모의실험，통과다차충주적방식탐토유기이차운이통도은정성，병결합유기수물성특정차이급기여공극암석적관계분석료기성인궤제。인위원유이차운이과정중형성비교은정적운이통도，운이효솔교고；천연기이차운이과정중형성일충동태적상대은정적운이통도，운이산실량교대。
In order to accumulate in effective trap,hydrocarbon generated form source rocks has to go through a certain distance of secondary migration,therefore the process of hydrocarbon secondary migration has a great influence on ultimate hydrocarbon accumulation rate. The secondary migration process of crude oil can be divided into two types:piston pattern and advantage pattern;the secondary migration of gas is an intermittent migration process composed of piston pattern and advantage pattern. The difference of secondary migration pattern leads to the differences in the migration pathway stability between oil and gas. This study used dyed kerosene and nitrogen to conduct physical simulation experiment of secondary migration process respectively,and discussed secondary migration pathway stability of oil and gas through way of more than one filling,and analyzed its formation mechanism in view of the different physical characteristics between oil,gas and water and the relation of the difference to porosity of reservoir rock. In our opinion,a fairly stable migration pathway could be formed in the process of oil secondary migration,so its transport efficiency is higher;natural gas forms a relatively stable dynamic migration pathway in the process of secondary migration,the loss amount while migrating is larger.