摘要
沁南柿庄地区煤储层含气性影响因素众多,为了揭示影响研究区煤储层含气量的主控因素,从煤层埋深、煤变质程度、煤岩煤质、孔隙度等4个方面进行相关性分析,并利用灰色关联法对埋深、Ro,max、镜质组和惰质组含量、固定碳含量、挥发分、水分+灰分和孔隙度等因素与含气量的关联度进行计算。结果表明:柿庄地区3#煤储层含气量影响因素关联度分布于0.653~0.733,平均0.696,其中,镜质组含量、固定碳含量与埋深为含气量主控因素,且与含气量呈正相关关系,Ro,max、挥发分、孔隙度、水分+灰分与惰质组含量为次要因素,其中惰质组含量、挥发分和水分+灰分与含气量呈负相关关系。
There are many factors influencing the gas content of coal reservoir in Shizhuang area of Qinnan.In order to reveal the main controlling factors of gas content of coal reservoir in the study area,the correlation analysis is carried out from four aspects of seam depth,coal metamorphism degree,coal petrology and quality,and porosity.The grey correlation method is used to calculate the correlation degree of burial depth,Ro,max,vitrinite and inertinite content,fixed carbon content,volatile matter,moisture+ash content,porosity and other factors with gas content.The results show that the correlation degree of influencing factors on gas content of No.3 coal reservoir in Shizhuang area is distributed between 0.653 and 0.733,with an average of 0.696.Vitrinite content,fixed carbon content and burial depth are the main controlling factors of gas content,and have a positive correlation with gas content.Ro,max,volatile matter,porosity,moisture+ash and inertinite content are secondary factors,among which inertinite content,volatile matter and moisture+ash content have negative correlation with gas content.
作者
熊幸
韩文龙
赵石虎
XIONG Xing;HAN Wen-long;ZHAO Shi-hu(School of Earth Science and Mapping Engineering,China University of Mining and Technology(Beijing),Beijing 100089,China)
出处
《煤炭技术》
CAS
北大核心
2021年第7期93-97,共5页
Coal Technology
基金
国家科技重大专项(2017ZX05064003-001)。
关键词
煤层
含气量
影响因素
灰色关联
柿庄地区
coal seam
gas content
influencing factors
grey correlation
Shizhuang area
