XRF元素录井在页岩气勘探中的应用——以黔北正安地区为例  

Application of XRF element logging in shale gas exploration

作　　者：赵丹 倪方杰 桑晓飞 ZHAO Dan;NI Fangjie;SANG Xiaofei(Shale Gas Production Technology Service Company,Sinopec Oilfield Services Jianghan Corporation,Wuhan,Hubei,430074,China)

机构地区：[1]中石化江汉石油工程有限公司页岩气开采技术服务公司,湖北武汉430074

出　　处：《江汉石油职工大学学报》2024年第5期1-3,共3页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：盆外黔北安场向斜五峰-龙马溪组具有构造复杂、储层非均质性强、地层常压等特征,选取优质页岩“甜点”段及确保轨迹在“甜点”段中穿行是该区实现该区页岩气高效开发的关键之一。结合XRF元素录井测试资料,从沉积环境、生烃潜力和随钻地质导向三方面进行分析研究,优选出五峰-龙马溪组优质页岩甜点段;同时,在随钻过程中,Si、Ca、Al等元素在不同岩性中的变化特征可辅助地质导向工作,提高“甜点”段钻遇率,助力页岩气实现高效开发。The Wufeng-Longmaxi formations in the Anchang Syncline of northern Guizhou,outside the basin,are characterized by complex structures,strong reservoir heterogeneity,and normal pressure.One of the key factors for achieving efficient shale gas development in this region is the identification of high-quality shale“sweet spot”intervals and ensuring the well trajectory penetrates these intervals.By integrating XRF element logging data,this study analyzes the depositional environment,hydrocarbon generation potential,and geosteering while drilling to identify optimal“sweet spot”shale intervals within the Wufeng-Longmaxi formations.Additionally,during drilling,the variations of elements such as Si,Ca,and Al in different lithologies provide valuable guidance for geosteering,improving the penetration rate through“sweet spots”and facilitating efficient shale gas development.

关 键 词：XRF元素录井 沉积环境 生烃潜力 地质导向 

分 类 号：P618.13[天文地球—矿床学]