METHOD OF SIMULTANEOUS-SEPARATE OPERATION OF MULTIBED WELL Russian patent published in 2008 - IPC E21B43/14 E21B34/06 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry and can be used at operation of multibed wells both for separate and simultaneous development. Method includes selected development of producing beds by means of installation of receiving valves in the structure of a sleeve; the valves are installed in operating columns against each of producing bed; each valve has two steady positions: "closed" and "opened". According to the invention the receiving valves are installed on a case, located in operational column, and they bypass well liquid only in the bottom-up direction. At that, transition of receiving valves into one of the steady positions "opened" or "closed" is achieved by means of a nipple, installed inside the case and plugged from the bottom; the said nipple also has side apertures and gates. The side apertures of the nipple are arranged against the receiving valves, which ought to be set into "opened" position, while the gates are pressure tight installed against the receiving valves, which ought to be set into "closed" position.

EFFECT: reduction of well operation costs.

3 dwg