摘要
油气藏中的烃类垂向微渗漏机制一直是油气化探基础理论研究中的焦点,对近地表油气化探异常主要成因机制不同的学者提出不同的观点,存在很大争议。通过自行设计模拟实验装置测量常温高压的水渗透人造岩芯速率,根据实验结果以及前人的数值模拟结果、水化学方法勘探实例,认为除非地下具有很好的通道(大的裂隙、断层),否则微渗漏异常不可能通过盆地深部压实水和天然补给水穿过油气藏垂向流动而产生,即随水迁移机制不是油气化探异常的主要成因机制,为油气化探异常成因机制的研究提供了一个实验证据。
The mechanism of hydrocarbon vertical micropercolation in oil and gas accumulation has been a point at issue in the basic theoretical study of oil and gas geochemical exploration.There exists much controversy concerning the genetic mechanism of the near-surface oil and gas geochemical anomalies.Based on the measurement of water-percolating artificial core rate by the self-designed modeling experiment device under the condition of normal temperature and high pressure together with digital simulation results available as well as case studies of hydrochemical exploration,the authors hold that it is impossible to form oil and gas micropercolating anomalies via vertical migrating through deep compaction water of the basin and meteoric water and penetrating oil and gas accumulation unless there exist ideal channels such as large fissures and faults at the depth.This is to say that the mechanism of migration with water is not the major genetic mechanism of the oil and gas anomalies.The results obtained by the authors provide experimental evidence for the study of the genetic mechanism of oil and gas anomalies.
出处
《物探与化探》
CAS
CSCD
北大核心
2010年第3期294-297,共4页
Geophysical and Geochemical Exploration
基金
国家自然科学基金项目(40973076)
中国石化股份公司科技开发项目(P05069)
关键词
油气微渗漏
随水迁移机制
模拟实验
数值模拟
水化学勘探
oil and gas micropercolation
mechanism of migration with water
modeling test
digital simulation
hydrochemical exploration
