Well jet device for logging horizontal wells and the...

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

Patent

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F04F 5/54 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2545395

The invention relates to pumping engineering. The inventive device comprises a ring which is provided with a sealing unit and arranged on a casing string and a smooth pipe column. The pump body is provided with a channel for supplying an active medium, a channel for supplying an active medium pumped out of the well and a stepped through channel which is embodied in such a way that it is possible to mount therein a blocking insert which closes the active medium supply channel or a depression insert whose mounting cuts off the cross section of the pipe column. A logging device is arranged on the lower end of the pipe column, a sealing unit is put on said pipe column between said logging device and the jet pump in such a way that it is axially offsetable with respect to the pipe column, the lower section of the pipe column above the logging device is embodied in such a way that is perforated. The inventive operating method consists in running the device into the well, carrying out a downhole survey and in raising said plant to the surface after the end of said survey. Said invention makes it possible to intensify surveying, testing and preparatory work for the operational production of the well, primarily horizontal and long-sweep wells.

La présente invention relève du domaine de l'équipement de pompage. L'invention concerne un dispositif, qui comprend une bague dotée d'un organe d'étanchéité, placée sur la partie inférieure d'un tubage de revêtement, et une colonne de tubage lisse dotée d'une pompe à jet. Le corps de la pompe contient un canal d'acheminement du fluide actif, un canal d'acheminement du fluide évacué du puits, et un canal de circulation à pas. Ledit canal de circulation à pas peut être muni d'un insert de blocage recouvrant le canal d'acheminement du fluide actif, ou d'un insert de dépression qui, une fois mis en place, bloque la section transversale de la colonne de tubage. Un instrument de diagraphie est placé sur l'extrémité inférieure de la colonne de tubage, un organe d'étanchéité est disposé sur la colonne de tubage entre l'instrument de diagraphie et la pompe à jet de manière qu'il puisse se déplacer axialement par rapport à la colonne de tubage, et des perforations sont ménagées dans la partie inférieure de la colonne de tubage au-dessus de l'instrument de diagraphie. L'invention a également trait à un procédé de fonctionnement, qui consiste à descendre le dispositif dans le puits, à effectuer des analyses, puis à remonter le dispositif à la surface. L'invention permet d'intensifier les travaux de recherche, d'essais et de préparation des puits, en vue de l'exploitation, en particulier, de puits horizontaux et fortement incurvés.

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