Downhole drilling assembly with motor powered hammer and method of using same

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United States of America Patent

PATENT NO 10000970
SERIAL NO

14650100

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drilling assembly assembly includes a hammer motor, a shaft, a driver, and a hammer (218). The shaft is operatively connectable to the hammer motor and rotated thereby. The driver is operatively connectable to the shaft, and includes a cam (such as guide channel 232) rotatable with the shaft and a fixed guide (such as guide pins 230) having a guide surface thereon. The cam is engageable with the guide surface and axially movable thereabout during rotation thereof. The hammer is operatively connectable to the driver and axially movable therewith, axially movable within the housing (215) independently from axial movement of the housing, and engageable with the bit to impart an impact thereto whereby the bit is hammered.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
NATIONAL OILWELL DHT L P500 CONROE PARK WEST DRIVE CONROE TX 77303

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eddison, Alan Martyn York, GB 31 958
Macfarlane, Alastair Henry Walter Angus, GB 4 24
Tulloch, Rory McCrae Aberdeen, GB 19 399

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