Drilling apparatus with dynamic cuttings removal and cleaning
AssigneeBaker Hughes Incorporated
InventorsWayne R. Hansen, Craig H. Cooley
Life of this patent
Estimating the term…
Abstract
A drilling apparatus having cuttings removal structure to reduce balling thereof and to help prevent the accretion of portions of chips and debris from drilling thereon and/or the accretion of portions of drilling fluids thereon. The drilling apparatus comprises an apparatus body having a connection thereon and structure for contacting cut portions of the earth formation. The contacting structure may include chip breakers and flails or combinations thereof.
Claims24
A drilling apparatus used in a drill string for drilling a borehole in an earth formation, said drilling causing said earth formation to be broken or cut into chips and debris which are transported by a flow of drilling fluid in said borehole, said drilling apparatus comprising:
- a drill bit having at least one connection structure thereon for connecting said bit in said drill string and an interior passage for said flow of said drilling fluid therethrough, said drill bit having a cavity therein contacted by said chips and debris transported by said flow of drilling fluid in said borehole;
- movable apparatus contained within said cavity of said drill bit, said apparatus movable in said flow of said drilling fluid in said cavity to break said chips and debris and to prevent accretion of said chips and debris or portions of said drilling fluid in an exterior area surface of said drill bit;
- and
- drive apparatus having a portion thereof connected to a portion of said drill string and having a portion thereof connected to said movable apparatus, said drive apparatus thereby causing said movable apparatus to move within said drill bit.
A drilling apparatus used in a drill string having a drill member therein for drilling a borehole in an earth formation, said drilling causing said earth formation to be broken or cut into chips and debris which are transported by a flow of drilling fluid in said borehole, said drilling apparatus comprising:
- a drill bit having at least one connection structure thereon for connecting said bit in said drill string and an interior passage for said flow of said drilling fluid therethrough, said drill bit having a cavity therein contacted by said chips and debris transported by said flow of drilling fluid in said borehole;
- movable apparatus contained within said cavity of said drill bit, said apparatus movable in said flow of said drilling fluid in said cavity to break said chips and debris and to prevent accretion of said chips and debris or portions of said drilling fluid in an exterior area surface of said drill bit;
- and
- drive apparatus having a portion thereof connected to a portion of said drill string and having a portion thereof connected to said movable apparatus, said drive apparatus thereby causing said movable apparatus to move within said drill bit, said drive apparatus including:
- a chip breaker drive assembly, said chip breaker drive assembly having a portion thereof connected to a connection structure of said drill member, a portion thereof engaging a portion of said borehole, and a portion thereof connected to said drill bit, said chip breaker drive assembly including:
- an upper carrier connector support connected to the connection structure of said drill member;
- a stationary gear track having a portion thereof engaging a portion of said borehole;
- at least one planet drive gear engaging a portion of the stationary gear track;
- at least one planet drive shaft engaging the at least one planet drive gear and a portion of the upper carrier connector support;
- a lower carrier connector support connected to the at least one connection structure of said drill bit and connected to the at least one planet drive shaft;
- and
- a sun gear having a portion thereof engaging a portion of the at least one planet drive gear and connected to said movable apparatus.
A drilling apparatus used in a drill string having a drill motor therein having, in turn, a drive shaft and housing for drilling a borehole in an earth formation, said drilling causing said earth formation to be broken or cut into chips and debris which are transported by a flow of drilling fluid in said borehole, said drilling apparatus comprising:
- a drill bit having at least one connection structure thereon for connecting said bit in said drill string and an interior passage for said flow of said drilling fluid therethrough, said drill bit having a cavity therein contacted by said chips and debris transported by said flow of drilling fluid in said borehole;
- movable apparatus contained within said cavity of said drill bit, said apparatus movable in said flow of said drilling fluid in said cavity to break said chips and debris and to prevent accretion of said chips and debris or portions of said drilling fluid in an exterior area surface of said drill bit;
- and
- drive apparatus having a portion thereof connected to a portion of said drill string and having a portion thereof connected to said movable apparatus, said drive apparatus thereby causing said movable apparatus to move within said drill bit, said drive apparatus including:
- a chip breaker drive assembly, said chip breaker drive assembly having a portion thereof connected to the drive shaft of said drill motor, a portion thereof connected to the housing of said drill motor, and a portion thereof connected to said drill bit, said chip breaker drive assembly including:
- an upper carrier connector support connected to the drive shaft of said drill motor;
- a stationary gear track connected to the housing of said drill motor;
- at least one planet drive gear engaging a portion of the stationary gear track;
- at least one planet drive shaft engaging the at least one planet drive gear and a portion of the upper carrier connector support;
- a lower carrier connector support connected to the at least one connection structure of said drill bit and connected to the at least one planet drive shaft;
- and
- a sun gear having a portion thereof engaging a portion of the at least one planet drive gear and connected to said movable apparatus.
Dependencies are inferred from the claim text.