Method and apparatus for downhole tubular expansion

E - Fixed Constructions – 21 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

E21B 23/04 (2006.01)

Patent

CA 2638035

A method and apparatus for expanding tubulars are disclosed. In one embodiment, an apparatus for radially expanding a tubular in a wellbore is disclosed. The apparatus includes an expansion swage. In addition, the apparatus includes at least one anchoring device for selective and releasable anchoring of selected parts of the apparatus to an inner surface of the tubular. The apparatus also includes a thruster providing a force for longitudinal movement of the expansion swage inside the tubular. Moreover, the apparatus includes a hydraulic valve for selective control of a flow of operating fluid to the thruster. The hydraulic valve includes a valve cylinder slidably positioned on a shaft and a position control device for selective and releasable securing a position of the valve cylinder on the shaft. The hydraulic valve also includes an elastic device for shifting the valve cylinder between two end positions.

Procédé et appareil d'expansion de tubulaires, comprenant, dans un mode de réalisation, un appareil d'expansion radiale d'un tubulaire dans un puits de forage. Ledit appareil comprend un biseau d'expansion et au moins un dispositif d'ancrage destiné à l'ancrage sélectif et libérable de parties choisies de l'appareil à une surface intérieure du tubulaire. L'appareil comprend également un propulseur générant une force pour le mouvement longitudinal du biseau d'expansion à l'intérieur du tubulaire. De plus, l'appareil comprend une vanne hydraulique pour la commande sélective d'un écoulement de fluide de fonctionnement vers le propulseur. La vanne hydraulique comprend un cylindre de vanne positionné de façon coulissante sur un arbre et un dispositif de commande de position destiné à fixer de façon sélective et libérable une position du cylindre de vanne sur l'arbre. La vanne hydraulique comprend également un dispositif élastique destiné à déplacer le cylindre de vanne entre deux positions terminales.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for downhole tubular expansion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for downhole tubular expansion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for downhole tubular expansion will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2070280

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.