Drilling assemblies and methods of drilling

专利名称：Drilling assemblies and methods of drilling发明人：John Zeni申请号：US11927294申请日：20071029公开号：US07775298B2公开日：20100817

专利附图：

摘要：Drilling assemblies and methods of drilling are disclosed. In one

implementation, a drilling assembly includes a rotary drive apparatus configured torotate a string of drill pipe having a cutting head at a drilling end thereof. A longitudinallyelongated torque transfer tube apparatus is mounted to and extends downwardly from

the rotary drive apparatus and is configured to longitudinally receive the string of drillpipe rotatably there-through. The torque transfer tube apparatus is isolated fromrotation relative to the rotary drive apparatus and the string of drill pipe during drillingwith the drilling assembly. A torque receiving structure is provided, and through whichthe torque transfer tube apparatus is upwardly and downwardly slidably received. Thetorque transfer tube apparatus and the torque receiving structure are isolated fromrotation relative one another and the string of drill pipe during drilling with the drillingassembly.

申请人：John Zeni

地址：Sheridan WY US

国籍：US

代理机构：Wells St. John P.S.

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