METHOD FOR SIMULTANEOUS SEPARATE MULTIPLE-ZONE WELL OPERATION Russian patent published in 2007 - IPC E21B43/14 

FIELD: hydrocarbon (oil, gas, gas-condensate, gas-hydrate) production and reservoir pressure maintenance in multiple fields, particularly simultaneous separate or alternate operation of several production and/or injection reservoir with single well.

SUBSTANCE: method involves lowering at least pipe string having constant or varying diameter in well, wherein the pipe string has opened or closed lower end and provided with at least one packer for reservoir isolation arranged between reservoirs or over reservoirs and between the reservoirs and with control device to control working agent injection and fluid production. Pipe string or control device lowered in injection or blower or gas-lift or pumping well comprises instrument transducer located at one reservoir level and adapted to transmit measurement information to ground surface and to determine technological parameters of injected working agent or produced fluid. For that cable or pulse pipe located inside or outside pipe string is lowered in well and pulse pipe is linked to instrument transducer or to control device or both to instrument transducer and to control device. The control device may be of fixed or removable type. After well head assemblage working agent is injected or fluid is produced via control device and instrument transducer. Measurement information is transmitter from instrument transducer to ground surface and technological parameters of working agent or reservoir fluid are determined. If said parameters differ from design values control device cross-section is changed to obtain design values of technological parameters for each reservoir.

EFFECT: increased efficiency of simultaneous separate or alternate operation of several production and/or injection reservoir with single well in multiple field.

14 cl, 9 dwg