Screen for controlling inflow of solid particles in a wellbore

Details Screen for controlling inflow of solid particles in a wellbore Screen for controlling inflow of solid particles in a wellbore

E - Fixed Constructions

21

B

E21B 43/08 (2006.01)

Patent

CA 2570057

A wellbore screen is provided for controlling inflow of solid particles into a wellbore. The wellbore screen comprises a conduit for transport of fluid, the conduit being provided with a filter for reducing inflow of solid particles into the conduit and swelling means arranged between the filter and the wellbore wall. The swelling means defines a plurality of compartments between the filter and the wellbore wall and is susceptible of swelling against the wellbore wall upon contact with a selected fluid so as to substantially prevent flow of fluid along the outside of the swelling means from one of said compartments into another of said compartments.

L'invention concerne une crépine de puits de forage permettant de commander le débit entrant de particules solides dans un puits de forage. La crépine de puits de forage comprend un conduit permettant de transporter du fluide, le conduit comprenant un filtre permettant de réduire le débit entrant de particules solides dans le conduit et des moyens de gonflement disposés entre le filtre et la paroi du puits de forage. Les moyens de gonflement définissent une pluralité de compartiments entre le filtre et la paroi du puits de forage et peuvent gonfler contre celle-ci au moment de la mise en contact avec un fluide sélectionné, de manière à empêcher sensiblement un fluide de s'écouler le long de l'extérieur des moyens de gonflement d'un compartiment à l'autre.

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