Pumping system with downhole liquid from gas separation

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 47/00 (2006.01) E21B 43/12 (2006.01) E21B 43/38 (2006.01)

Patent

CA 2102770

A well pumping system for pumping a fluid having a liquid and a gas is disclosed which system includes a well casing and a production tube set within the well casing so as to define an annular space between the production tube and the well casing, the production tube including a shoe comprising a hollow tubular article having a substantially cylindrical wall defining a first flow passage, a second flow passage being formed within the wall of the shoe, the first flow passage having a first inlet for the liquid and a first outlet to the annular space, the second flow passage having a second inlet for the gas and a second outlet to the production tube, whereby the liquid is produced through the annular space and the gas is produced through the production tube. The pumping system preferably includes a pump for pumping the liquid to the first inlet, and a rod string for actuating the pump, the rod string being disposed within the production tube, whereby the rod string is substantially isolated from the liquid.

Description d'un système de pompage d'un fluide comprenant un liquide et un gaz, système incluant un tubage et un tube de production placé dans le tubage de manière à délimiter un espace annulaire entre le tube de production et le tubage, le tube de production comprenant un sabot comptant un élément tubulaire creux ayant une paroi essentiellement cylindrique délimitant un premier passage pour l'écoulement, un deuxième passage pour l'écoulement étant formé dans la paroi du sabot, le premier passage pour l'écoulement possédant une première entrée pour le liquide et une première sortie dans l'espace annulaire, le deuxième passage pour l'écoulement ayant une deuxième entrée pour le gaz et une deuxième sortie dans le tube de production, où le liquide est produit dans l'espace annulaire et où le gaz est produit dans le tube de production. De préférence, le système de pompage inclut une pompe pour le pompage du liquide jusqu'à la première entrée et un train de tiges, pour actionner la pompe, ce train de tiges étant placé dans le tube de production, où il est essentiellement isolé du liquide.

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