钻孔重入与跟管钻进技术研究与应用  

Research and application of reentry cone and drilling-in casing

作　　者：宋刚 崔淑英 谢文卫 牛庆磊[1,2] 赵明 韩泽龙 SONG Gang;CUI Shuying;XIE Wenwei;NIU Qinglei;ZHAO Ming;HAN Zelong(Southern Marine Science and Engineering GuangDong Laboratory(Guangdong),Guangzhou 511458,China;The Institute of Exploration Technology,China Geological Survey,Langfang 065000,Hebei,China;Guangzhou Marine Geological Survey,China Geological Survey,Guangzhou 517000,China)

机构地区：[1]南方海洋科学与工程广东省实验室(广州),广州511458 [2]中国地质调查局勘探技术研究所,河北廊坊065000 [3]中国地质调查局广州海洋地质调查局,广州517000

出　　处：《海洋地质前沿》2022年第7期75-85,共11页Marine Geology Frontiers

基　　金：南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项“天然气水合物钻采船单筒双井及大洋钻探技术研究”(GML2019ZD0504);中国地质调查局项目“深海钻探技术与工程支撑”(DD20190585),“XXX先导试验区试采实施”(中国地质科学院勘探技术研究所)(DD20190227),“XXX先导试验区资源评价与试采”(中国地质科学院勘探技术研究所)(DD20211349)。

摘　　要：大洋钻探在海底泥面钻孔,需要解决钻探过程泥面坍塌和钻具反复重入钻孔的问题。重入锥是大洋钻探钻孔重入的专用装置,可采用自由落体和跟管钻进2种方式部署。自由落体式重入锥是一种临时性重入井口,用于支撑短期内钻孔重入,而采用跟管钻进工艺部署的重入锥井口,可作为一种永久性的海底装置,支撑现阶段乃至以后多航次的钻孔重入。笔者介绍了钻孔重入和跟管钻进技术的原理、关键器具和工艺流程,并总结了首次浅海试验情况。通过浅海试验验证了重入锥与跟管钻进同步部署工艺流程的可行性,测试了自研套管送入工具及张敛式随钻扩孔器的功能性,发现了送入工具在密封结构方面存在的不足,为进一步开展深海复杂地层钻孔重入和跟管钻进技术研究奠定了理论和实践基础。It is necessary to solve the problems of mud surface collapse and drilling tool reentry in ocean drilling operation. Reentry cone is a special device for ocean drilling reentry, which can be deployed in two ways: FreeFall Funnel(FFF) and Reentry Cone and Casing(RECC). The FFF is a temporary reentry wellhead designed to support reentry in a short term, while the RECC can be used as a permanent subsea device to support drilling reentry in the current and future voyaging. In this paper, we introduce the principle, key tools, and process of RECC, and summarize our first shallow sea test, in which the feasibility of simultaneous deployment process of reentry cone and casing was verified, and the functionality of our newly-developed running tool and underreamerwhile-drilling was tested. The shortcomings of the running tool in sealing structure were found. This study lays a theoretical and practical foundation for further research on drilling reentry and drilling-in casing technology in complex deep-sea scenarios.

关 键 词：大洋钻探 跟管钻进 重入锥 送入工具 张敛式随钻扩孔器 

分 类 号：P756.5[天文地球—海洋科学] P634