Earth boring drill bits with casing component drill out...

E - Fixed Constructions – 21 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

E21B 10/43 (2006.01) E21B 10/567 (2006.01) E21B 17/14 (2006.01)

Patent

CA 2623231

A drill bit (12) includes a bit body having a face on which two different types of cutting elements are disposed, the first type (32) being cutting elements suitable for drilling at least one subterranean formation and the second type (36) being cutting elements suitable for drilling through a casing bit disposed at an end of a casing or liner string and cementing equipment or other components, if such are disposed within the casing or liner string, as well as cement inside as well as exterior to the casing or liner string. The second type of cutting elements (36) exhibits a relatively greater exposure than the first type of cutting elements (32) , so as to engage the interior of the casing bit and, if present, cementing equipment components and cement to drill therethrough, after which the second type of cutting elements (36) quickly wears upon engagement with the subterranean formation material exterior to the casing bit, and the first type of cutting elements (32) continues to drill the subterranean formation.

Outil de forage (12) comportant un corps d~outil présentant une face sur laquelle sont disposés des éléments de coupe de deux types différents, les éléments de coupe du premier type (32) étant des éléments permettant de forer au moins une formation souterraine, et les éléments de coupe du deuxième type (36) étant des éléments permettant de forer un outil de cuvelage disposé à une extrémité d~une colonne de cuvelage ou d~une colonne perdue et un équipement de cimentation ou d~autres composants, si ceux-ci sont disposés à l~intérieur de la colonne de cuvelage ou de la colonne perdue, ainsi que le ciment présent à l~intérieur et à l~extérieur de la colonne de cuvelage ou de la colonne perdue. Les éléments de coupe du deuxième type (36) font davantage saillie que les éléments de coupe du premier type (32) de manière à venir en prise avec l~intérieur de l~outil de cuvelage et, le cas échéant, les composants de l~équipement de cimentation et le ciment et les forer. Les éléments de coupe du deuxième type (36) s~usent alors rapidement au contact de la formation souterraine à l~extérieur de l~outil de cuvelage, et les éléments de coupe du premier type (32) poursuivent le forage de la formation souterraine.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Earth boring drill bits with casing component drill out... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Earth boring drill bits with casing component drill out..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth boring drill bits with casing component drill out... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1835552

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.