摘要
本文综合木里地区已有地质、地震、钻井、测井资料,对冻土区天然气水合物储层进行了识别与预测。综合裂缝指示因子(the factor of fissure,FF)、有机质指示因子(the factor of carbon,FC)、钙质指示因子(the factor of calcareous matter,FCa)和水合物指示因子(the factor of gas hydrate,FH、FHD)4种指示因子,形成了利用测井资料进行冻土区天然气水合物识别的方法;根据地震资料频谱分析计算能力系数,在能量系数剖面上,含天然气水合物层段能量系数表现为"高-低-高"的特征。测井资料水合物储层指示因子和地震资料能量系数在冻土区天然气水合物储层识别中的应用,为冻土区天然气水合物资源评价提供技术支撑。
Integrating the existing geological,seismic,drilling and logging data in the Muli area,this study proposes a series of methods to identify and predict the natural gas hydrate reservoir in permafrost.Gas hydrate could be well discerned using logging-derived factors,such as the factor of fissure(FF),the factor of carbon(FC),the factor of calcareous matter(FCa)and the factor of gas hydrate(FHand FHD).The energy coefficient can be calculated by spectral analysis of seismic data.Its profile indicates that the gas hydratebearing sedimentary layers are characterized by relatively low energy coefficients in high value backgrounds.Natural gas hydrate explorations in the Muli area verified that these methods are useful and reliable and probably could be used in other permafrost areas.
作者
刘晖
罗晓玲
卢振权
曹洁
陈建文
邹长春
LIU Hui;LUO Xiaoling;LU Zhenquan;CAO Jie;CHEN Jianwen;ZOU Changchun(Oil and Gas Survey,China Geological Survey,Beijing 100083,China;Development and Research Center,China Geological Survey,Beijing 100037,China;Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266071,China;China University of Geosciences(Beijing),Beijing 100083,China)
出处
《中国矿业》
北大核心
2020年第1期157-161,170,共6页
China Mining Magazine
基金
中国地质调查局地质调查项目“祁连山冻土区天然气水合物资源勘查”资助(编号：GZHL 201400302)
关键词
天然气水合物
测井
地震
木里冻土区
natural gas hydrate
logging
seismic
the Muli permafrost area
