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US 6,742,607 B2Granted
Fixed blade fixed cutter hole opener
AssigneeSmith International, Inc.
InventorTimothy P. Beaton
Life of this patent
Estimating the term…
Abstract
A hole opener including a tool body having upper and lower ends. The upper and lower ends may be coupled to adjacent drilling tools. At least two blades are formed on the tool body and are arranged so that the hole opener is positioned concentric with a wellbore, and cuffing elements are located on the blades. The at least two blades and the cutting elements are arranged to increase a diameter of a previously drilled wellbore.
Claims111
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore,
- wherein the plurality of cutting elements are arranged so that a net lateral force acting on the at least two blades is less than approximately 15% of an axial load applied to the hole opener.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore,
- wherein the at least two blades and the cutting elements thereon are configured to substantially mass balance the hole opener about an axis of rotation thereof.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of the previously drilled wellbore,
- wherein the plurality of cutting elements each have a backrake different than about 20 degrees.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore, the plurality of cutting elements comprising at least one cutting element having a diameter of at least one of 9.0 mm, 11.0 mm, 16.0 mm, 22.0 mm, and 25.0 mm.
1 more element
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore,
- wherein at least one of the cutting elements on one of the blades is positioned so as to form a redundant cutting arrangement with at least one other one of the cutting elements disposed on a different one of the blades.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore,
- wherein the at least two blades and the tool body are formed from a non-magnetic material.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore,
- wherein the at least two blades are formed from a matrix material infiltrated with a binder alloy.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- and
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore,
- wherein a perpendicular distance measured from a surface of the tool body to an outermost extent of a gage cutting element disposed on the at least two blades is equal to at least three times a diameter of the gage cutting element.
2 more elements
A hole opener, comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- and
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein,
- wherein the at least two blades comprise a diamond impregnated material, the at least two blades adapted to increase a diameter of a previously drilled wellbore.
1 more element
A hole opener comprising:
- a tool body comprising upper and lower ends adapted to be coupled to adjacent drilling tools;
- at least two blades formed on the tool body and arranged so that the hole opener is positioned substantially concentric with a wellbore when disposed therein;
- a plurality of cutting elements disposed on the at least two blades, the at least two blades and the plurality of cutting elements adapted to increase a diameter of a previously drilled wellbore;
- and
- a pilot hole conditioning section comprising at least two azimuthally spaced apart pilot blades formed on the tool body axially ahead of the at least two blades, the pilot blades tapered toward a downhole end thereof and gage pads positioned at selected diameters, and at least one cutting element disposed on at least one of the pilot blades.
2 more elements
Dependencies are inferred from the claim text.