HYBRID ROTARY GUIDING DEVICE

A hybrid rotary guiding device,includes:rotating shaft,the rotating shaft is used to drive the head of a drill tool to rotate,the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower...

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Bibliographische Detailangaben
Hauptverfasser:	HE, Xinzhen, DU, Jiansheng, HONG, Linfeng, XIE, Qijun, LIU, Qingbo, DI, Qingyun, CHEN, Wenxuan, WANG, Tsili, YANG, Yongyou, LIU, Yang
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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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Beschreibung
Zusammenfassung:	A hybrid rotary guiding device,includes:rotating shaft,the rotating shaft is used to drive the head of a drill tool to rotate,the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction,the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion;the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms,the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the head of a drill tool,the first hydraulic mechanism and the second hydraulic mechanism are configured so that the first hydraulic mechanism can drive the second hydraulic mechanism to drive the pushing member.The present invention combines the advantages of directional and push-oriented guidance,the influence of formation properties on the build-up slope is largely eliminated, a higher build rate can be provided,and the demand for energy consumption is greatly reduced.