Device and method for drilling with continuous tool rotation and continuous drilling fluid supply

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9708854
APP PUB NO 20140318868A1
SERIAL NO

14309557

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A device is for a drilling rig for forming of a bore hole in a subterranean structure. The drilling rig comprises a first, top driven drilling machine arranged vertically displaceable along a guide track, where a second drilling machine is arranged between the first drilling machine and the bore hole, vertically displaceable along a guide track and provided with a rotary table arranged to be able to take the weight of a pipe string. A rotary drive unit is arranged for continuous rotation of the pipe string. A fluid chamber is arranged to, in a fluid communicating way, be able to connect a pipe string end portion with a drilling liquid plant. As the fluid chamber is provided with pipe string ports comprising means arranged to, in a fluid sealing way, be able to close the pipe string ports. A power tong is arranged for continuous rotation of an element connected to the pipe string, as the power tong is arranged in the fluid chamber. Also, a method is for drilling with continuous tool rotation and continuous drilling liquid supply.

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Patent Owner(s)

Patent OwnerAddress
WEST DRILLING PRODUCTS ASPOSTBOKS 374 STAVANGER N-4067

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grinrod, Mads Stavanger, NO 4 11
Krohn, Helge Sandnes, NO 8 52
Skjaerseth, Odd B Stavanger, NO 12 53

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