CUTTING STRUCTURES FOR CASING COMPONENT DRILLOUT AND EARTH-BORING DRILL BITS INCLUDING SAME

Title:

CUTTING STRUCTURES FOR CASING COMPONENT DRILLOUT AND EARTH-BORING DRILL BITS INCLUDING SAME

Document Type and Number:

WIPO Patent Application WO/2011/049864

Kind Code:

A4

Abstract:

An earth-boring tool includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type suitable for drilling through at least one elastomeric component of a casing string, as well as a casing shoe and cement. Methods of drilling with an earth-boring tool include engaging and drilling an elastomeric component using at least one abrasive cutting structure.

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Inventors:

JURICA CHAD T (US)
DONALD SCOTT F (US)
WILLIAMS ADAM RICHARD (US)

Application Number:

PCT/US2010/053043

Publication Date:

September 09, 2011

Filing Date:

October 18, 2010

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
JURICA CHAD T (US)
DONALD SCOTT F (US)
WILLIAMS ADAM RICHARD (US)

International Classes:

E21B10/54; B22F7/06; E21B10/42

Attorney, Agent or Firm:

WELBORN, Brian, S. et al. (Baker Hughes IncorporatedP.O. Box 474, Houston TX, US)

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