US 7,451,836 B2 · Advanced expandable reaming tool

Abstract

An expandable reaming tool including at least two reamer pads connected to a tool body. The reamer pads are adapted to be displaced between a retracted position and an expanded position. At least one spiral blade is formed on at least one reamer pad. A plurality of cutting elements are disposed on the at least one spiral blade. An expandable reaming tool including at least two reamer pads connected to a tool body. The reamer pads are adapted to be displaced between a retracted position and an expanded position. At least one blade is formed on the at least two reamer pads. A plurality of cutting elements are disposed on the at least one blade and at least one gage protection element is disposed on a gage surface of the at least one blade. The plurality of cutting elements are arranged so as to enable the expandable reaming tool to backream a formation in a wellbore.

Claims19

Dependent claims

An expandable reaming tool, comprising:

at least two reamer pads operatively coupled to a tool body and configured to be displaced between a retracted position and an expanded position;
at least one spiral blade formed on each of the at least two reamer pads;
a plurality of cutting elements disposed on the at least one spiral blade,
wherein selected ones of the plurality of cutting elements disposed on one of the at least two reamer pads are positioned to contact a wellbore at a substantially same axial location as other selected ones of the plurality of cutting elements so as to form a redundant cutting arrangement.

1 more element

Dependencies are inferred from the claim text.

Advanced expandable reaming tool

Life of this patent

Advanced expandable reaming tool

Life of this patent

Abstract

Claims19