青海水合物勘查ZK-1井钻探施工技术  

Drilling Construction Technology of ZK01 Qinghai Hydrate Exploration Well

作　　者：王世炬 WANG Shiju(Brigade,Gansu Bureau of Coal Geology,Zhangye Gansu 734000,China)

机构地区：[1]甘肃煤田地质局一四五队,甘肃张掖734000

出　　处：《地质装备》2020年第3期37-40,共4页Equipment for Geotechnical Engineering

摘　　要：天然气水合物在世界范围内储量十分巨大,广泛分布于冻土区、深海或者湖泊沉积物。青海水合物勘查ZK-1井位于青藏高原沱沱盆地,勘查的目的是了进一步验证沱沱盆地天然气水合物成矿条件和找矿前景。该井取心要求高,地质条件复杂,施工难度大。通过选择大口径绳索取心钻进工艺,优化钻进参数,顺利地完成了施工任务。Natural gas hydrates have huge reserves in the world and are widely distributed in frozen soil,deep sea or lake sediments.China s Qinghai-Tibet Plateau is rich in frozen soil resources and has a very good research prospect.Well ZK01 was located in the Tuotuo Basin.The purpose of ZK01 exploration well is to further verify the gas hydrate mineralization conditions and prospecting prospects in the Tuotuo Basin.The coring requirements of this well are high,but its surrounding geological conditions are complicated,so it is difficult to do coring drilling.Through the drilling process of large-diameter wireline coring and optimization of drilling parameters,this exploration well was successfully completed.

关 键 词：天然气水合物 大口径 绳索取心 冲洗液 

分 类 号：P634[天文地球—地质矿产勘探]