Apparatus for reducing water production in gas wells

Details Apparatus for reducing water production in gas wells Apparatus for reducing water production in gas wells

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) E21B 43/00 (2006.01)

Patent

CA 2710528

Production of liquids into a production string is regulated at inlets to the production string. An annular space is defined between a base pipe and a surrounding screen. The base pipe has inlets near one end of the screen and an overlaying shroud that spans over the screen and the inlet to the base pipe so as to define a restricted annular path to the base pipe opening and within the screen. A porous material is placed in the annular space and extends over the base pipe opening. If gas with liquid is produced, the gas having a lower density and viscosity preferentially gets through the porous media while the denser and more viscous water or other liquid is kept out due to greater resistance to flow offered by the porous media.

La production de liquides dans une colonne de production est régulée aux entrées de la colonne de production. Un espace circulaire est défini entre une conduite principale et une grille environnante. La conduite principale possède des entrées à proximité d'une extrémité de la grille et une enveloppe de recouvrement qui recouvre la grille et l'entrée de la conduite principale de façon à définir un passage circulaire restreint dans la grille pour l'ouverture de la canalisation principale. Une matière poreuse est placée dans l'espace circulaire et s'étend sur l'ouverture de la canalisation principale. Si du gaz contenant du liquide est produit, le gaz de densité et de viscosité inférieures traverse facilement le milieu poreux alors que la densité et la viscosité supérieures de l'eau ou de tout autre liquide rencontre la résistance du milieu poreux qui prévient leur passage.

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