摘要
在油气勘探中,随钻判识天然气成因类型具有重要意义,它可以实时反映重要的油气地质信息。目前随钻判识天然气成因类型方法少,针对判识方法多元性的问题,选择白云凹陷作为研究区域,利用FLAIR录井技术,以乙烷碳同位素判识储层的天然气成因类型和储层对应的FLAIR录井3个敏感参数C_(7)H14、n C_(7)、C_(7)H_(8)为研究对象,借鉴C_(7)轻烃系统三角图判识方法,建立了适用于白云凹陷的天然气成因类型判识新方法。研究结果表明:利用与天然气成因类型密切相关的FLAIR敏感参数建立的新C_(7)轻烃系统三角图判识方法,可以准确鉴别油型气和煤型气,在随钻判识中取得了较好的应用效果,可为油气成藏特征及运聚分布体系研究提供重要的数据依据,具有推广价值。
In oil and gas exploration,it is of great significance to identify the genetic type of natural gas while drilling,it can reflect important oil&gas geological information in real time.At present,there are few methods to identify the genetic types of natural gas while drilling.In view of the diversity of identification methods,Baiyun Sag is chosen as the study area,using FLAIR mud logging technology.The genetic types of natural gas identified by ethane carbon isotope and corresponding three FLAIR mud logging sensitive parameters C_(7)H_(14),nC_(7) and C_(7)H_(8) are studied.The identification method of C_(7) light hydrocarbon system triangular plot is used for reference to establish a new method for identifying natural gas genetic types in Baiyun Sag.The results show that FLAIR sensitive parameters closely related to the genetic type of natural gas are used,a new triangular plot identification method for C_(7) light hydrocarbon system is set up,oil type gas and coal-related gas can be accurately identified,it obtains good application effects in identification while drilling,provides important data basis for the study on oil and gas reservoir forming characteristics and migration and accumulation distribution system,and is of popularization value.
作者
丰帆
杨毅
熊亭
袁胜斌
曹英权
崔玉良
FENG Fan;YANG Yi;XIONG Ting;YUAN Shengbin;CAO Yingquan;CUI Yuliang(China France Bohai Geoservices Co.,Ltd.,Tianjin 300457,China;CNOOC China Limited Shenzhen Company,Shenzhen,Guangdong 518000,China)
出处
《录井工程》
2024年第3期33-38,共6页
Mud Logging Engineering
关键词
FLAIR录井技术
天然气成因
白云凹陷
轻烃
油型气
煤型气
FLAIR mud logging technology
natural gas origin
Baiyun Sag
light hydrocarbon
oil type gas
coal-related gas
