PROCEDURE FOR INSULATION OF WATER INFLOWING PAY IN WELL AND HEAT INSULATING PIPE FOR ITS IMPLEMENTATION Russian patent published in 2011 - IPC E21B33/138 

FIELD: gas and oil production.

SUBSTANCE: procedure consists in lowering string into well into zone of water inflowing pay, in pumping backfilling solution prepared of bitumen with filler through string into well and in forcing string through into water inflowing pay. Also, as filler there is used cement and additionally high viscous bitumen at amount of 5-20 wt % or high viscous oil of volume of bitumen-cement solution determined depending on a geologic-physical characteristic of the pay. Before pumping into the well and depending on occurrence depth of the water inflowing pay backfilling solution is heated to temperature as high, as 70-80°C. Solution is pumped through the string of heat insulated pipes under the mode of alternating pressure at maximal pressure not exceeding pressure of hydraulic outbreak above the located pay. Also, after water insulating operations production of the pay is withdrawn in a cyclic mode with start up into operation for 2-3 days and shut down for the same time as many as three times, if intake capacity of the pay exceeds 500 m³/day.

EFFECT: improvement of procedure.

5 cl, 1 dwg