DUAL STRING PRODUCTION METHOD IN WELL WITH INCREASED GAS RATIO AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC E21B43/14 E21B43/38 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to split-stream production of several formations with use of a sucker-rod pumping unit. The method includes running of the unit including a flow column, a liner-packer combination ensuring splitting of the upper and the lower operated formations, sucker-rod pump for formation fluid pumping from two formations which inputs communicate with the over-packer and the under-packer space through suction valves while its output communicates with a cavity of the flow column through an injection valve; a transition element providing hydraulic connection of the under-packer space through the liner to one of suction valves of the sucker-rod pump and permanent separation of associated gas from the fluid produced from the lower formation to the in-field flow line at the well head or to the over-packer cavity of the well above dynamic level through the borehole pipeline. After separation of associated gas the formation fluid is pumped from two formations through the flow column at the well head.

EFFECT: improving separation and extraction of associated gas contained in the formation fluid.

3 cl, 3 dwg