摘要
研究人员在准噶尔盆地南缘吉木萨尔—奇台县一带采集了地表土壤样品,进行酸解烃及X衍射测试分析,发现酸解烃甲烷与碳酸盐方解石相关性较高,通过分析二者的关系,认为方解石是油气微渗漏的重要指示矿物。进一步确定酸解烃甲烷含量的异常门限值,采用烃类特征比值法分析认为研究区酸解烃样品烃类异常多与石油伴生气为主。地表样品中干燥系数越低,表明有机质厌氧细菌对地表样品的影响越小,测得的烃类气体来自深部油气微渗漏的可能性越大。研究区酸解烃甲烷与干燥系数呈负相关,认为干燥系数结合酸解烃异常对研究区油气微渗漏具有较好的指示意义。
The surface soil samples were collected from Jimusaer-Qitai area in the southern margin of Junggar basin for testing and analysis of acidolysis hydrocarbon and carbonate calcite.It was found that acidolysis hydrocarbon methane had a high correlation with carbonate calcite.By analyzing the relationship between them,calcite was considered to be an important indicator mineral for oil and gas micro leakage.The abnormal threshold value of acidolysis hydrocarbon methane content was further determined,and the hydrocarbon characteristic ratio method was used to analyze the results.The lower the drying coefficient of surface samples,the less the influence of organic anaerobic bacteria on surface samples,and the greater the possibility of hydrocarbon gas from oil and gas micro leakage.There is a negative correlation between acidolysis hydrocarbon methane and drying coefficient in the study area,and it is considered that the drying coefficient combined with the acidolysis hydrocarbon anomaly has a good indication of oil and gas micro leakage in the study area.
作者
刘明
李斌
赵文芳
韩昕瑶
Liu Ming;Li Bin;ZhaoWen-fang;Han Xin-yao(Shaanxi Geological Science and Technology Center,Xi'an 710054,Shaanxi,China;Urumqi Geological Brigade,Xinjiang Uygur Autonomous Region Geological Bureau,Urumqi 830000,Xinjiang,China;School of Mining Engineering and Geology,Xinjiang Institute of Engineering,Urumqi 830023,Xinjiang,China)
出处
《西部探矿工程》
2025年第3期77-80,84,共5页
West-China Exploration Engineering
关键词
准噶尔盆地南缘
油气微渗漏
酸解烃
干燥系数
southern margin of junggar basin
oil and gas micro leakage
acidolysis hydrocarbon
drying coefficient
