Title:
【発明の名称】縦穴用のローラベーンモータ及びローラベーンポンプ
Document Type and Number:
Japanese Patent JP2001521097
Kind Code:
A
Abstract:
A roller vane motor for downhole drilling comprises a housing (1) and a rotor (2). The housing contains wing deflector cams (5) that divide the space between housing and rotor into chambers (8a, b). The rotor is equipped with cylindrical rollers (7) in recesses (6), which rollers can move between an extended and a retracted position. Drilling fluid enters the chamber parts (8a) through inlet ports (10) in the upper bearing part of the housing (1) and pushes rollers (71) into their extended position and in a clockwise direction, making the rotor turn, whilst drilling fluid of lower pressure is pushed from the corresponding chamber parts (8b) through outlet ports (9) in the lower bearing part of the housing (1) and further to the drill bit below. When the rollers (71) reach the wing deflector cams (5) they are forced into the retracted position, their task being taken over by rollers (72).
Inventors:
Furpping, Arnold Willem Josephs
Application Number:
JP2000517193A
Publication Date:
November 06, 2001
Filing Date:
October 19, 1998
Export Citation:
Assignee:
Furpping, Arnold Willem Josephs
International Classes:
E21B4/02; F04C2/344; F04C11/00; (IPC1-7): F04C2/344; E21B4/02
Attorney, Agent or Firm:
Yosuke Goto (1 person outside)