收稿日期: 2015-07-26
修回日期: 2015-09-11
网络出版日期: 2016-03-10
基金资助
延长石油陆相页岩气成藏机理及资源潜力评价(编号：2012KTZB03-03-01-01)资助.
The desorbing experiments of shale gas and its geological application
Received date: 2015-07-26
Revised date: 2015-09-11
Online published: 2016-03-10
王香增，范柏江 . 页岩气解析实验及其地质应用[J]. 天然气地球科学, 2016 , 27(3) : 532 -538 . DOI: 10.11764/j.issn.1672-1926.2016.03.0532
Lacustrine shale is well developed in the Shanbei area,and some shale gas wells have been put into production in this area.However,the researches on shale gas migration as well as storage process are very poor,the estimation about shale gas reserves is also a debatable issue for exploration.Solving the above challenges helps to recognize the resource potential,and reduce exploration risk.The gas components and carbon isotope compositions can be obtained from the desorbing experiments,and these data provide us with important information about the origins and storage process of shale gas.Furthermore,they can help to solve the problems of geological mechanisms and reserves calculations.The results show that,the shale gas in the study area is oil type gas;the heavy gases as well as methane enriched in 13C have the priority over other components to absorb on the shale surface;the small molecules have the priority over large molecules to migrate within the shale;the formation order of different gas types is absorbing gas,dissolving gas and then free gas.
Key words： Shale gas; Desorbing experiments; Gas chemistry; Geological application
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