METHOD OF DUAL COMPLETION OF SEVERAL PRODUCTIVE HORIZONS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2012 - IPC E21B43/14 E21B47/00 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions refers to oil and gas industry and can be used for production of liquid and gaseous hydrocarbons in wells developed several productive horizons, production control from every productive horizon and wells research without extraction of pumping equipment. Method includes descending along well tubing and installation of liner with through or plugged end, with cup, packers, mandrels and column splitters. Note that measuring and regulating instruments are descended into the well with the aid of device for dual completion of several productive horizons that includes pumping station bypassing system. Measuring and regulating instruments are installed in the mandrels by fishing tools. Geophysical researches are made along the whole well length by measuring instruments descended on a cable.

EFFECT: provision of unobstructed passing of measuring and regulating instruments along the whole down-hole equipment of dual completion of multi-layer well without contacting the pumping unit, without lifting the latter to the well mouth.

6 cl, 1 dwg