METHOD OF ONE WELL TWO RESERVOIRS SIMULTANEOUSE PRODUCTION USING PUMPING EQUIPMENT WITH DRIVE LOCATED ON WELLHEAD Russian patent published in 2010 - IPC E21B43/14 

FIELD: oil-and gas industry.

SUBSTANCE: method includes a parker descending and its installation between reservoirs, a surface casing and a production string, pumping equipment with a top and bottom pumps, connected with a rod between each other, and with bars to a drive. At that the top and the bottom pump's inlets connected with over parker and under parker clearance accordingly via a suction valve, and outlets - with the surface casing and the production string. Generate operation movement with the wellhead located drive, transmit it through void bars to pumps and lift top and bottom reservoirs product to the surface through the surface casing and production strings. The pumping equipment equipped with top and bottom screw pumps, descend pumps cases together with the production string, between which bellow the connection with the over parker clearance, on the production string, from top to the bottom installed a sleeve with calibrated longitude channel and a void connector, equipped with additional entrance created on the top surface as an entrance funnel with a liner, located in the connector cavity. Descent into the production string on bars top and bottom crews according to pumps, connected with the rod, which additionally equipped with a blind plunger. Screws and plungers diametres manufactured as reduced from the top to the bottom for passing through not relative to them case and liner during descending process, which finishes after the top and bottom screws interaction with the according pump cases. The plunger hermetically covers the sleeve's longitude channel, separating the bottom pump outlet from the top pump inlet. The wellhead drive generates screws rotation, for lifting the bottom reservoir products to the surface through under parker clearance, the suction valve, the connector cavity using the bottom screw pump and through the surface casing. Lift the top reservoir products through the over parker clearance, production string using the top screw pump.

EFFECT: process capability increase because of reservoirs products, containing hard mechanical particles, long term pumping.

2 dwg