Hybrid drive for a fully rotating downhole tool

A hybrid drive for use within a rotary steerable drilling too. The hybrid drive includes a prime mover 70 for rotating a drilling component 118, which may be cam used to counter-rotate a steering head, relative to a fully rotating outer housing of the rotary steerable tool. In addition, the hybrid d...

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Bibliographic Details
Main Author Ravi P Nanayakkara
Format Patent
LanguageEnglish
Published 19.04.2017
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:A hybrid drive for use within a rotary steerable drilling too. The hybrid drive includes a prime mover 70 for rotating a drilling component 118, which may be cam used to counter-rotate a steering head, relative to a fully rotating outer housing of the rotary steerable tool. In addition, the hybrid drive includes an electrical motor/generator 80 for adjusting the rotational speed of the cam in response to high frequency changes in rotational speed of the tool housing. The drilling component may be counter-rotated in order to keep a drill bit geostationary to a formation while the housing rotates. The hybrid drive also includes a transmission 110 coupled to the prime mover and the electrical motor/generator for providing mechanical energy from one or both of the prime mover and the motor/generator to rotate the cam (or other drilling component) within the rotary steerable tool.
Bibliography:Application Number: GB20160014741