E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/00 (2006.01)
Patent
CA 2619976
A rotary coring device and method for acquiring a sidewall core from an earth formation adjacent a wellbore are provided. The rotary coring device includes a coring tool having a housing with a core receptacle therein and being adapted for positioning at selected depths within the wellbore. The coring tool further includes a first gear assembly operably coupled to a rotary coring bit. The first gear assembly is configured to rotate the rotary coring bit. The rotary coring device further includes an electrical motor configured to drive the first gear assembly for rotating the rotary coring bit at one of a plurality of rotational speeds. The rotary coring device further includes a hydraulic actuator configured to move the rotary coring bit in a first direction toward the earth formation for obtaining the sidewall core and to move the rotary coring bit in a second direction away from the earth formation.
L'invention porte sur un dispositif de carottage rotary et procédé de prélèvement d'une carotte dans la paroi latérale d'une formation terrestre jouxtant un forage. Le dispositif de carottage comporte: un outil de carottage comporte un logement recevant la carotte et conçu pour de placer à une certaine profondeur dans le forage; un premier train d'engrenages entraînant un trépan; un moteur électrique entraînant le premier train d'engrenages à une ou plusieurs vitesses; et un vérin hydraulique déplaçant le trépan soit dans une première direction vers la formation en vue du prélèvement de la carotte, et soit dans une deuxième direction opposée.
Ashcraft David W.
Phan Quan V.
Sagoo Bahadur S.
Tchakarov Borislav J.
Baker Hughes Incorporated
Sim & Mcburney
LandOfFree
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