Method and apparatus for reaming well bore surfaces nearer the center of drift
AssigneeExtreme Technologies, LLC
InventorsLot William Short, JR., Robert Bradley Beggs, Richard Earl Beggs
Life of this patent
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Abstract
The present invention provides a method and apparatus for increasing the drift diameter and improving the well path of the well bore, accomplished in one embodiment by cutting away material primarily forming surfaces nearer the center of the drift, thereby reducing applied power, applied torque and resulting drag compared to conventional reamers that cut into all surfaces of the well bore.
Claims20
An apparatus for increasing the diameter of a well bore, comprising:
- two reamers, each having a plurality of cutting blades extending a distance radially outwardly from the outer surface of each reamer, wherein, in an order counter to the direction of rotation, a first cutting blade extends a first distance and each additional cutting blade extends an equal or greater distance than the preceding cutting blade, wherein the blades of a first reamer do not overlap the blades of a second reamer;
- wherein the plurality of cutting blades of each reamer are angularly displaced from the plurality of cutting blades of each other reamer.
The apparatus of claim 11, wherein the apparatus is positioned at least 100 feet behind the drill bit.
An drill string, comprising:
- a bottom hole assembly;
- two reamers, each having a plurality of cutting blades extending a distance radially outwardly from the outer surface of each reamer, wherein, in an order counter to the direction of rotation, a first cutting blade extends a first distance and each additional cutting blade extends an equal or greater distance than the preceding cutting blade, wherein the blades of a first reamer do not overlap the blades of a second reamer;
- wherein the plurality of cutting blades of each reamer are angularly displaced from the plurality of cutting blades of each other reamer.
Dependencies are inferred from the claim text.