海洋地质钻探实践
投稿时间:2019-11-08  修订日期:2020-01-02  点此下载全文
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作者单位E-mail
王世栋 广州海洋地质调查局 956601787@qq.com 
中文摘要:海洋地质十号船采用“裸眼”钻井,即采用无隔水管或套管,钻井液采用无循环开放式直排的工艺进行钻探施工。钻柱总成由钻头、BHA、钻铤(7 -1∕2 inch OD×4-25∕32 inch ID×15 feet)、钻杆(5-1∕2 inch OD×4 -25∕32 inch ID×30 feet(含接头长度))组成,钻柱有序下入海底,再将海底基盘下至海底泥面。采用5-1∕2〞钻杆进行钻进,利用绳索取芯钻具(取样长度:3-4m)进行岩心采取;实践证明,海洋地质十号船钻探系统圆满的完成了海洋地质钻探取心任务。
中文关键词:海洋地质十号船,“裸眼”钻井,绳索取芯
 
Marine Geological Drilling Practice
Abstract:Hai Yang Di Zhi Shi Hao ship uses "open-hole" drilling, that is, no riser or casing is used, and the drilling fluid is drilled using a non-circulating open straight process. The drill string assembly consists of drill bit, BHA, drill collar (7 -1∕2 inch OD × 4-25 ∕ 32 inch ID × 15 feet), and drill rod (5-1 ∕ 2 inch OD × 4 -25∕32 inch ID × 30 feet (including the joint length)), the drill string is lowered into the sea orderly, and then the subsea base plate is lowered to the submarine mud surface. 5-1 ∕ 2in drill pipe was used for drilling, and the core was taken by using the rope core drilling tool (sampling length: 3 ~ 4m). Practice has proved that the marine geological ship No. 10 drilling system successfully completed the marine geological core drilling task .
keywords:Hai Yang Di Zhi Shi Hao ship    rope coring
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