Reamer for use in the formation of a well drilled through a geological formation, a set of drilling to form a well drilled.Set of drilling a well in cortare geological formation, the downhole tool for use in a set of drilling a well drilled.Method for passing a set of drilling by a well drilled in having a given diameter and drilling a new well under the well drilled in.Method for boring a well drilled, and set of drilling to drill a hole through the geological formation

摘要

"Reamer for use in the formation of a well drilled through a geological formation, a set of drilling to form a well drilled.Set of perforation to cut a pit in the geological formation, the downhole tool for use in a set of drilling a well drilled.Method for passing a set of drilling by a well drilled in having a given diameter and drilling a new well under the well drilled in.Method for boring a well drilled, and set of drilling to drill a hole through the geological formation.A set of drilling and an eccentric adjustable diameter reamer are disclosed.The reamer includes cutting elements mounted on at least one fixed blade for boring a well drilled previously formed or to form a well drilled a greater diameter under a well PERfurado coated exists. The method and apparatus is provided to stabilize the whole drilling so that the reamer can be used in retroescareamento hole.The retention means, such as pins or members of shear locking reciprocantes requested by spring is provided to prevent premature extension of States furniture of reamer.Including blades and piston.The shear pins are, preferably,Accessible by the external surface of the housing of the reamer to facilitate replacement in the field of shear pins without having to disassemble the reamer.Members of the locking spring lock and destravam requested repeatedly, so that the replacement in the field is not required and, thus,The movable members can be extended and contracted multiple times while the reamer is inside the shaft.