Micro-Seepage of Hydrocarbon Gas in Mudstone and Sandstone and Its Significance for Oil and Gas Exploration
详细信息
- 责任者：Huang Chenjun (Wuxi Research Institute of Petroleum Geology ; SINOPEC ; Wuxi 214126 ; China) ; Wang Guojian
- 刊名：Petroleum Geology & Experiment
- 出版年：2013
- 卷期：35(4)
- 关键词：油气勘探 ; petroleum exploration ; 烃气测量 ; hydrocarbon surveys
- 页码：p.445-448,472
- 图表：illus., 15 refs.
- 分类号：1500
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
Two mini apparatus were initially made and employed for the experimental simulation of hydrocarbon gas micro-seepage through mudstone and sandstone separately.It was found out that the ratio of hydrocarbon gas components would maintain stable if they had reached the balance state in a certain sampling point and the balanced componential percentage in the total hydrocarbon was in positive correlation with the distance between sampling point and hydrocarbon resource.These characters of hydrocarbon micro-seepage have two pieces of significance: On one hand,the balance time could be calculated through experimental research or field measurement.According to the balance time,the micro-seepage velocity of hydrocarbon gas could be accounted,as well as the micro-seepage amount of hydrocarbon gas from a reservoir further according to micro-seepage model.On the other hand,through the study of the characteristics of the vertical curve of hydrocarbon componential percentage in total hydrocarbon tested from core geochemical exploration or hydrocarbon gas logging,the depth of a potential reservoir is likely to be predicted.