Slickline conveyed debris management system

E - Fixed Constructions – 21 – B

Patent

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E21B 21/00 (2006.01) E21B 37/00 (2006.01) E21B 44/06 (2006.01)

Patent

CA 2758495

A wellbore cleanup tool is run on slickline. It has an onboard power supply and circulation pump. Inlet flow is at the lower end into an inlet pipe that keeps up fluid velocity. The inlet pipe opens to a surrounding annular volume for sand containment and the fluid continues through a screen and into the pump for eventual exhaust back into the water in the wellbore. A modular structure is envisioned to add debris carrying capacity. Various ways to energize the device are possible. Other tools run on slickline are described such as a cutter, a scraper and a shifting tool.

La présente invention concerne un outil de nettoyage de puits de forage qui fonctionne au moyen d'un câble lisse. Il possède un réseau de bord et une pompe de circulation. L'écoulement d'admission entre par l'extrémité inférieure d'un tuyau d'admission qui maintient la vélocité du fluide. Le tuyau d'admission aboutit à un volume annulaire environnant destiné à contenir du sable et le fluide poursuit son trajet, traverse un filtre et arrive à la pompe pour retourner éventuellement dans l'eau du puits de forage. Une structure modulaire est conçue pour augmenter la capacité de transport des débris. Le dispositif peut être alimenté en courant de diverses façons. L'invention porte aussi sur d'autres outils fonctionnant au moyen d'un câble lisse, tels une lame, un racleur et un outil de déplacement.

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