CAJ | 학술논문

气测录井以其可以灵敏、快速监测钻遇不同地层赋存烃类气体信息的优势而成为常规油气和非常规油气资源勘查的一种成熟技术手段。考虑到当钻具研磨赋存有天然气水合物的岩层时势必会导致其分解释放大量烃类气体并被气测录井仪器灵敏有效地监测，首次尝试利用气测录井方法在我国陆域冻土区———青海木里三露天天然气水合物调查区进行钻探实时预判，建立天然气水合物的野外现场实时预判方法。最后，以 DK8-19钻孔为例说明气测录井实时预判方法的应用、存在的问题及建议。实际应用结果表明，单一利用气测录井方法实时预判天然气水合物层段与地质和分析测试综合认识结果的吻合度可达到85.71％，而将上述三种方法结合可进一步提高野外识别天然气水合物的准确度。
기측록정이기가이령민、쾌속감측찬우불동지층부존경류기체신식적우세이성위상규유기화비상규유기자원감사적일충성숙기술수단。고필도당찬구연마부존유천연기수합물적암층시세필회도치기분해석방대량경류기체병피기측록정의기령민유효지감측，수차상시이용기측록정방법재아국륙역동토구———청해목리삼로천천연기수합물조사구진행찬탐실시예판，건립천연기수합물적야외현장실시예판방법。최후，이 DK8-19찬공위례설명기측록정실시예판방법적응용、존재적문제급건의。실제응용결과표명，단일이용기측록정방법실시예판천연기수합물층단여지질화분석측시종합인식결과적문합도가체도85.71％，이장상술삼충방법결합가진일보제고야외식별천연기수합물적준학도。
With the advantages of sensitive and quick monitoring hydrocarbon gases in different stratigraphies, gas logging has become a mature technology for exploring the conventional or unconventional oil and gas.Con-sidering that while the drilling tool is grinding strata bearing gas hydrate,the gas hydrate could decompose and release numbers of hydrocarbon gases which can be sensitively monitored by gas logging,this paper tries to dis-cuss and establish a real-time prognosis method to recognize gas hydrates in permafrost regions in Muli of Qing-hai.Taking drillhole DK8-19 in Sanlutian coal field in Muli of Qinghai as an example,the application,prob-lems and suggestions of this real-time prognosis through gas logging was discussed.The practical application shows that the goodness of fit between the result of singly using gas logging and that of combining geological analysis and testing is up to 85.71%,and the result of combining gas logging,geological analysis and testing will be better.