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Through Bore Drilling Systems: a New Drilling Option

机译:通孔钻探系统:新的钻探选项

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This paper describes a Through Bore Drilling and LoggingSystem, which has been developed and tested over the pastfour years with increasing levels of success.The key components of the system, as it stands today, are:1. A PDC bit with a removable and re-insertable 2 ?”ID center insert and latching mechanism.2. A string of memory logging tools (gamma,resistivity, density, neutron and sonic measurements)with 2 ?” OD.3. A 3D rotary steering device, with 2 ?” full throughbore.4. A removable and re-insertable MWD probe type tool,which leaves a 2 ?” full through bore after retrieval.The trials and jobs carried out to date are also brieflydescribed, together with the currently perceived strengths andweaknesses of the current system.
机译:本文介绍了一种通孔钻井和测井系统,该系统在过去的四年中经过开发和测试,并取得了越来越高的成功水平。该系统的主要组成部分是:1。具有可移动和可重新插入的2个“ ID”中心插入和闩锁机制的PDC钻头2。一串内存记录工具(伽马,电阻率,密度,中子和声波测量结果),带有2?” OD.3。具有2?的3D旋转转向装置全通孔4。可移动且可重新插入的MWD探针类型工具,仅需2英寸?”还简要介绍了迄今为止进行的试验和工作,以及当前系统的当前优势和劣势。

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