COMPLETION METHOD FOR WELL WITH HORIZONTAL SHAFT Russian patent published in 2015 - IPC E21B33/16 

FIELD: oil and gas industry.

SUBSTANCE: completion method for a well with a horizontal shaft includes drilling of the well, running in of a production string to a horizontal part of the well with a mud-inflatable packer, a stop ring and a stage cementing collar at the end, injection of cement grout to the annular space, the process withhold for the time of the cement hardening, drilling of the stop ring and collar and the well development. At that at running in the production string is stopped at a distance from the bottomhole, and drilling of the stop ring and collar is made with the usage of a drilling fluid with a density from 1.20 up to 1.25 g/cm³, the drilling fluid is injected with a rate of 18-21 l/s at a wellhead pressure of 8-10 MPa. Besides, the interval from the production string end till the bottomhole is worked out by a bit, the well is washed by the drilling fluid with a density of 1.20-1.25 g/cm³, at that the drilling fluid is injected with a rate of 18-21 l/s at a wellhead pressure of 8-10 MPa.

EFFECT: higher well productivity.

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