发明申请
US20100252326A1 MODULAR SYSTEM FOR A BACK REAMER AND METHOD 有权
用于后备箱的模块化系统和方法

MODULAR SYSTEM FOR A BACK REAMER AND METHOD
摘要:
A modular back reamer to be used in subterranean drilling includes a drive stem connected to a drill string and configured to support a reamer body, the reamer body providing a plurality of receptacles, wherein the receptacles are configured to retain a cutting leg assembly at varying heights within a predetermined range, and a plurality of shims engaged within the receptacles to secure the cutting leg assemblies at a specified height within the predetermined range, wherein the cutting leg assembly is secured to the reamer body with at least one mechanical fastener.
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