钻探工程2024，Vol.51Issue(z1)：138-142,5.DOI:10.12143/j.ztgc.2024.S1.020
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
摘要
Abstract
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Key words
ocean drilling/wire-line coring/soft and hard strata/self-adaptive expand and contract/engineering investigation分类
天文与地球科学引用本文复制引用
殷国乐,齐立强,王林清,秦如雷,马汉臣..海洋自适应伸缩绳索取心钻探工艺研究及应用[J].钻探工程,2024,51(z1):138-142,5.基金项目
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) （大洋钻探船）
