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绳索取心作为一种新的取心钻进方法,必然伴随有相应的钻进工艺规程和操作技术。只有充分认识绳索取心钻进的特点,根据不同情况采用合理的钻进工艺规程,熟练的掌握取心操作技术,正确地使用绳索取心钻具,才能充分发挥绳索取心钻进的优越性,达到减少事故,提高效率,降低成本之目的。一、钻进工艺规程绳索取心钻进除与普通金刚石钻进一样,要求配备多档的高速钻机和泵压较高的变量泵,设计合理的钻孔结构,严格钻孔级配外,还必须根据地层情况、钻头类型、钻孔口径和深度、冲洗液的种类等因素,采用适合绳索取心钻进特点的钻进工艺规程。
Coring as a new coring method of rope drilling, bound to be accompanied by the corresponding drilling procedures and operating techniques. Only by fully understanding the characteristics of rope coring, according to different circumstances using a reasonable drilling procedures, skilled grasp of coring operation techniques, the correct use of coring tools, in order to give full play to the advantages of rope coring drilling , To reduce accidents, improve efficiency and reduce costs. First, the drilling process rules Coring drilling In addition to ordinary diamond drilling, with the requirements of multi-file high-speed drilling rig and pump a higher pressure variable pump, a reasonable design of the drilling structure, strict drilling gradation, but also Must be based on the formation conditions, bit type, bore diameter and depth, the type of flushing fluid and other factors, the adoption of a suitable method of drilling the core drilling process specifications.