CASING BITS, DRILLING ASSEMBLIES, AND METHODS FOR USE IN FORMING WELLBORES WITH EXPANDABLE CASING
摘要
Casing bits include an expander for enlarging an inner diameter of expandable casing at least partially disposed within a body of the casing bits. Drilling assemblies include a casing bit attached to an end of expandable casing, and an expander disposed in proximity to the casing bit and a distal end of the expandable casing. Methods of forming casing bits include positioning an expander in proximity to a body of a casing bit. Methods of forming drilling assemblies include positioning an expander in proximity to a body of a casing bit and a distal end of expandable casing, and attaching the casing bit to the end of the expandable casing. Methods of casing a wellbore include one or both of drilling and reaming a wellbore using a casing bit attached to a distal end of expandable casing, and forcing an expander through the expandable casing.
申请公布号
WO2010127233(A2)
申请公布日期
2010.11.04
申请号
WO2010US33150
申请日期
2010.04.30
申请人
BAKER HUGHES INCORPORATED;MARVEL, TIM, KING;MEINERS, MATTHEW, J.;EVANS, JOHN, G.
发明人
MARVEL, TIM, KING;MEINERS, MATTHEW, J.;EVANS, JOHN, G.