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绳索取芯钻进在世界各国岩心钻探工作中已广泛使用。绳索取心钻具的结构也日臻完善，如岩心遇堵信号装置，内岩心管到位信号装置，多次使用内管安全打捞装置，铰链式轴销矛头等等。但是，绳索取心技术在深孔钻进实践中正面临着一些新的问题。现就国外有关这方面的技术进展简述于下。（一）随着绳索取心钻具在深孔钻进中的应用，如何减少升降内岩心管所花费的时间，就成了突出的问题。结何解决这一矛盾，一些钻探公司对绳索取心钻具的结构或其辅助设备的性能作了一些改进。
Cord coring drilling has been widely used in core drilling in various countries of the world. The structure of the rope coring drill is also getting more and more perfect. For example, if the core encounters a jamming signal device, the core tube in place signal device, the multiple use inner tube safety salvage device, the hinged pingear and so on. However, rope coring technology is facing some new problems in deep hole drilling practice. The technical progress abroad in this area is briefly described below. (A) With the application of rope coring tools in deep hole drilling, how to reduce the time it takes to lift and lower core pipes has become a prominent issue. To resolve this contradiction, some drilling companies have made some improvements in the structure of rope coring tools or the performance of their auxiliary equipment.