CAJ | 학술논문

在祁连山冻土区木里天然气水合物矿区进行了微量元素地球化学勘查有效性试验，试验面积150 km2，采样密度2个点／km2。研究表明，土壤 Ba、V、Fe 、Ca 等元素在水合物矿藏上方呈现顶部异常，而且异常吻合程度较高。微量元素预测天然气水合物具有较高的成功率，调查前钻探的干井（DK-4、DK-5和 DK-6）位于背景区，调查前钻探的水合物井（DK-1、DK-2、DK-3、DK-7）和调查后水合物井（DK3-11、DK2-13、DK1-14）位于异常内。试验结果还预测了祁连山天然气水合物两个新的远景区。试验表明，微量元素是祁连山冻土区寻找天然气水合物的有效指示元素，它们与水合物其它化探指标结合冻土条件和地质特征综合解释，可以提高冻土区天然气水合物预测成功率。
재기련산동토구목리천연기수합물광구진행료미량원소지구화학감사유효성시험，시험면적150 km2，채양밀도2개점／km2。연구표명，토양 Ba、V、Fe 、Ca 등원소재수합물광장상방정현정부이상，이차이상문합정도교고。미량원소예측천연기수합물구유교고적성공솔，조사전찬탐적간정（DK-4、DK-5화 DK-6）위우배경구，조사전찬탐적수합물정（DK-1、DK-2、DK-3、DK-7）화조사후수합물정（DK3-11、DK2-13、DK1-14）위우이상내。시험결과환예측료기련산천연기수합물량개신적원경구。시험표명，미량원소시기련산동토구심조천연기수합물적유효지시원소，타문여수합물기타화탐지표결합동토조건화지질특정종합해석，가이제고동토구천연기수합물예측성공솔。
The efficiency test of trace element geochemical exploration was carried out for natural gas hydrates in the Qilian Mountains permafrost region,the study area covered 150 km2 and sampling density of 2 sampling sites per km2 was used.Results showed that Ba,V,Fe and Ca in soils presented the apical pattern,and had identical anomalies.Natural gas hydrates could be higher successfully prospected by trace elements.The dry wells (DK-4,DK-5,DK-6)drilled before this survey were located in background area,and the hydrate wells DK-1,DK-2,DK-3,DK-7 drilled before the survey and DK3-11,DK2-13,DK1-14 drilled after the survey were both located in anomaly area.Two prospective target regions were predicted according to the test results. Test has shown that trace elements were the effective index for prospecting gas hydrate in the Qilan Mountain permafrost region.Combined with permafrost conditions and geological characteristics,the comprehensive inter-pretation of trace elements and other geochemical index could improve the success rate of prediction for natural gas hydrate in permafrost area.