我国深海钻探重入钻孔技术优选及设计思路  

Optimization and design approach for deep-sea drilling well reentry technology in China

作　　者：熊亮 谢文卫[1,2] 卢秋平[1] 朱芝同 刘晓林[2] XIONG Liang;XIE Wenwei;LU Qiuping;ZHU Zhitong;LIU Xiaolin(Guangzhou Marine Geological Survey, CGS, Guangzhou Guangdong 517000, China;Institute of Exploration Techniques, CAGS, Langfang Hebei 065000, China)

机构地区：[1]中国地质调查局广州海洋地质调查局,广东广州517000 [2]中国地质科学院勘探技术研究所,河北廊坊065000

出　　处：《探矿工程（岩土钻掘工程）》2020年第7期1-7,共7页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：自然资源部中国地质调查局项目“深海钻探技术与工程支撑(广州海洋地质调查局)”(编号:DD20190584);南方海洋科学与工程广东省实验室(广州)重大专项团队项目“天然气水合物钻采船单筒双井及大洋钻探技术研究”(编号:GML2019ZD0504);2019年省级促进经济发展专项资金(海洋经济发展用途)项目“天然气水合物先导区建设与资源区块优选”(编号:GDME-2018D001)。

摘　　要：深海钻探通常采用无隔水管开路钻进,当更换钻头或钻具,测井、处理孔内事故等情况时,需要起下钻后重新进入原钻孔,此过程称为重入钻孔。由于钻探船与海底孔口有数千米的水体相隔,受海浪和洋流作用,钻探船动荡不稳,钻杆柱摇摆不定,要想重新进入原钻孔并非易事。本文通过广泛调研,对海底基盘、声呐重入系统、水下电视重入系统及无人遥控潜水器(ROV)等目前几种常见的重入钻孔技术进行了详细介绍,对各种技术的优缺点进行了综合对比,优选了水下电视重入系统作为我国深海钻探重入钻孔技术方案,初步提出了技术设计思路,为样机研发和工艺制定奠定了基础。Riserless drilling is usually used in deep sea drilling.For change of the drill bit or the bottom hole assembly,logging or dealing with the incident in the hole,it is necessary to trip out the drilling string and then get it back into the original hole,and this process is called“well reentry”.Because the drilling vessel is separated from the submarine wellhead by water for several kilometers,it is unstable with the drill string swinging due to the waves and ocean currents.It is not easy to reenter the original hole.Through extensive investigations,this article introduces several common reentry drilling technologies at home and abroad in detail,compares the advantages and disadvantages of different technologies,optimizes the underwater television reentry drilling technology.The design approach for deep-sea drilling well reentry technology is put forward,laying the foundation for development of the prototype and reentry process.

关 键 词：深海钻探 重入钻孔技术 水下电视 重入锥 跟管钻进下套管 

分 类 号：P634[天文地球—地质矿产勘探]