System for producing de-watered oil

Details System for producing de-watered oil System for producing de-watered oil

E - Fixed Constructions

21

B

E21B 43/38 (2006.01) E21B 41/00 (2006.01) E21B 43/30 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2393406

System for producing de-watered oil from an underground formation (2) to the surface (4), which system comprises a reception well (7) having a substantially horizontal or inclined section (10) for primary oil/water separation of the well fluid, a water discharge system (12) having an upstream end (13) that is capable of receiving during normal operation liquid from the lower region (14) of the downstream part (9) of the reception well (7); and a secondary underground oil/water separator (18) having an upstream end (19) that is capable of receiving during normal operation liquid from the upper region (20) of the downstream part (9) of the reception well (7), the secondary separator having an outlet (21) for de-watered oil that is in fluid communication with the inlet (5) of a production well and an outlet (22) for a water-enriched component that is in fluid communication with the water discharge system (12).

L'invention concerne un système destiné à produire du pétrole déshydraté remontant d'un gisement (2) vers la surface (4), ce système comprenant un puits de réception (7) de section sensiblement horizontale ou inclinée (10) servant à effectuer une séparation primaire pétrole/eau du fluide du puits, un système de vidange d'eau (12) dont une extrémité amont (13) peut recevoir, lors d'un fonctionnement normal, du liquide provenant de la région inférieure (14) de la partie aval(9) du puits de réception (7), et un séparateur secondaire (18) souterrain pétrole/eau d'extrémité amont (19) pouvant recevoir, lors d'un fonctionnement normal, du liquide provenant de la région supérieure (20) de la partie aval (9) du puits de réception (7), ce séparateur secondaire étant doté d'une sortie (21) pour du pétrole déshydraté, qui est en communication avec l'entrée (5) d'un puits de production, et d'une sortie (22) destinée aux composants enrichis en eau, qui est en communication avec le système de vidange d'eau (12).

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