海洋自适应伸缩绳索取心钻探工艺研究及应用  

Research and application of ocean adaptive telescopic rope core drilling technology

作　　者：殷国乐 齐立强 王林清 秦如雷[1,2,3] 马汉臣 YIN Guoyue;QI Liqiang;WANG Linqing;QIN Ruei;MA Hanchen(Institute of Exploration Techniques,CAGS,Langfang Hebei 065000,China;Innovation Base for Automatic and Intelligent Drilling Equipment,Geological Society of China,Langfang Hebei 065000,China;Technology Innovation Center for Deep Exploration Drilling Equipment,CGS,Langfang Hebei 065000,China)

机构地区：[1]中国地质科学院勘探技术研究所,河北廊坊065000 [2]中国地质学会自动化智能化钻探装备创新基地,河北廊坊065000 [3]中国地质调查局深部探测钻探装备技术创新中心,河北廊坊065000

出　　处：《钻探工程》2024年第S01期138-142,共5页Drilling Engineering

基　　金：工业和信息化部高技术船舶科研项目“天然气水合物钻采船(大洋钻探船)总装建造关键技术研究”(编号:CJ05N20)。

摘　　要：海洋取心钻探钻遇软硬交互地层时,往往采取提钻更换相匹配的取心钻具来应对不同硬度的地层。海上作业成本高,频繁起下更换钻具耗费时间长,面对软硬交互地层工况,研发了自适应伸缩绳索取心钻探工艺。钻遇绵软地层时,内管超前伸出,由内管安装的钻头进行取心钻进;钻遇坚硬地层时,内管在地层对钻压的反力下会压缩其内部的弹簧从而回缩到钻具外总成当中,由外总成钻头进行取心钻进,在压缩弹簧的调解下,可根据地层硬度的变化自动调整取心钻进方式。通过工程应用检测,使用该工艺平均岩心采取率高,达到了保证取心质量、延长内管钻头工作寿命的目的,提高了作业效率和安全性,为海洋工程勘察提供了借鉴。When marine coring drilling encounters soft hard interaction formations,it is often necessary to lift the drill and replace it with a matching coring tool to cope with formations of different hardness.The cost of offshore operations is high,and frequent replacement of drilling tools takes a long time.Faced with the interaction of soft and hard geological conditions,an adaptive telescopic rope coring drilling technology has been designed.When encountering soft formations during drilling,the inner pipe extends ahead and the drill bit installed on the inner pipe performs coring drilling;When encountering hard formations,the inner tube will compress its internal spring under the reaction force of the formation on the drilling pressure,and then retract into the outer assembly of the drilling tool.The core drilling is carried out by the outer assembly drill bit,and under the adjustment of the compression spring,the core drilling method can be automatically adjusted according to the change in formation hardness.Through engineering application testing,the average core recovery rate of this process is high,achieving the goal of ensuring core quality and extending the working life of the inner pipe drill bit,improving operational efficiency and safety,and providing certain reference significance for marine engineering investigation.

关 键 词：海洋钻探 绳索取心 软硬互层 自适应伸缩 工程勘察 

分 类 号：P634.4[天文地球—地质矿产勘探]