Well screen having a slurry flow path

Details Well screen having a slurry flow path Well screen having a slurry flow path

E - Fixed Constructions

21

B

E21B 43/08 (2006.01) E21B 43/04 (2006.01)

Patent

CA 2122106

A well screen having slurry flow paths enclosed therein includes support rods extending in the axial direction of the screen disposed cylindrically at a predetermined interval in the circumferential direction of the screen, a wire wound on the outer periphery of said support rods so as to form slits of a predetermined width, one or more flow paths for gravel-containing slurry provided inside of the wire and extending in the axial direction of the screen, and openings for communicating the flow paths with the outside of the screen. Lowering and lifting of the screen through a wellbore can be made smoothly without interfering of the slurry flow paths with the wellbore and installation of the screen can thereby be faciliated.

Un filtre de puits ayant des chemins d'écoulement de boues incorporés comprend des tiges de support qui s'étendent dans la direction axiale du filtre disposé de façon cylindrique à intervalles prédéterminés dans le sens circonférentiel du filtre, un fil enroulé à la périphérie extérieure desdites tiges de support de manière à former des fentes d'une largeur prédéterminée, un ou plus d'un chemin d'écoulement de boues contenant du gravier ménagés à l'intérieur du fil et s'étendant dans le sens du filtre, et des ouvertures pour mettre les chemins d'écoulement en communication avec l'extérieur du filtre. On peut descendre et relever le filtre en douceur dans le puits de forage sans que les chemins d'écoulement des boues ne fassent interférence au puits de forage, et l'installation du filtre peut donc s'en trouver facilitée.

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