摘要
煤系气勘探开发领域存在诸多科学技术问题有待解决,透彻理解煤系气共生关系首当其冲。共生现象在自然界中普遍存在,共生理论作为描述共生现象的方法论工具,可为深化理解煤系气共生关系提供启示。借鉴共生理论,分析了煤系气共生单元及其本质,回顾和评述了煤系气共生关系研究现状,就产业对煤系气共生关系研究的需求进行了思考。分析认为,不同属性煤系气共生单元按一定因果规律耦合,构成了形形色色的煤系气共生关系;储层单元、共生关系与共生环境的进一步耦合决定了煤系气共生效应,一方面体现为煤系气共生富集程度,另一方面影响到共生组合合采工程实施可行性;目前提出的煤系气共生组合考虑了岩性、岩相序列和源储关系三类共生界面,启动了关于煤系气共生单元工程互动行为、共生层段环境的探讨。研究指出,产业对煤系气共生关系研究的需求体现为三个“推进”:一是推进研究深度由共生组合向共生模式转化,二为推进分析视野由单一介质共生界面向多重介质共生界面转化,三是推进研究目的由共生模式向共生效益转化。
There are many scientific and technological problems to be solved in the field of CMG exploration and exploitation,in which a thorough understanding of CMG paragenetic relationship(paragenesis)is the first to be affected.Paragenesis is a common phenomenon in nature.Paragenesis theory,as a methodological tool to describe paragenesis,provides enlightenment for further understanding of CMG paragenesis.Based on the paragenesis theory,the authors in this paper analyzes the CMG paragenesis unit and its essence,reviews and comments on the research status of CMG paragenetic relationship,and reports some thoughts on the research trend of the relationship.According to the analysis,different attributes of CMG paragenetic units are coupled according to a certain causal relationship,forming a variety of CMG paragenetic relationship.The further coupling of reservoir unit,paragenetic relationship and paragenetic environment determines the CMG paragenesis effect,which is reflected in the CMG abundance on the one hand,and affects the cofracturing feasibility and gas co-production compatibility of CMG paragenetic unit on the other hand.Three types of paragenetic interfaces including lithology,lithofacies sequence and source-reservoir relationship are considered in the CMG paragenetic association proposed at present,and the discussion on the interaction behavior of CMG unit in engineering and the environment of the paragenesis strata interval has been started.It is pointed out that the industry's demand for CMG paragenetic relationship research is reflected in three aspects:one is to promote the transformation of understanding depth from paragenesis combination to paragenesis mode;the second is to promote the transformation of analysis perspective from single medium paragenesis interface to multiple media paragenesis interface;the third is to promote the transformation of research purpose from paragenesis mode to paragenesis benefit.
作者
秦勇
Qin Yong(Ministry of Education Key Laboratory of CBM Resources and Reservoir-forming Process,China University ofMining and Technology,Xuzhou,Jiangsu 221008)
出处
《中国煤炭地质》
2020年第9期26-32,58,共8页
Coal Geology of China
基金
国家科技重大专项课题(2016ZX05066-01,2016ZX05044-02)。
关键词
煤系气
共生单元
共生关系
共生效应
产业需求
coal measures gas
paragenesis unit
paragenesis relationship
paragenesis effect
industrial demand
