DEVELOPMENT METHOD OF HEAVY OIL OR BITUMEN MINE FIELD WITH CONTROLLED PRODUCT EXTRACTION FROM HORIZONTAL WELLS Russian patent published in 2015 - IPC E21B43/24 E21B47/07 

FIELD: oil and gas industry.

SUBSTANCE: development method of heavy oil or bitumen mine field with controlled production extraction includes construction of the top injector and bottom producer with horizontal sections placed one above the other, injection of heat carrier through the horizontal injector with bed heating by creation of steam chamber and extraction of the product through the bottom producer. Thermograms of steam chamber are taken, the chamber's warm-up state is analysed for uniform heating and available temperature peaks, and considering the obtained thermograms uniform heating of steam chamber is performed by changing zones of product extraction. Before start-up of extraction with permanent taking of thermograms heat carrier is injected to the below horizontal well until the layer between wells is heated. Thereafter thermograms are taken along horizontal boreholes of both wells with identification of interval with maximum temperature between the wells. Then measurement instruments are removed, heat carrier in injected to the injector and pump is run in to the above interval in the producer, product is produced by the pump till pressure communication is set between the wells. The pump is removed from the producer, a pump with fibre-optical cable is run in to the well in order to control thermogram along the whole length of producer and monitor pump movement to less heated intervals in process of oil or bitumen production.

EFFECT: usage of this method allows increase in oil recovery factor and open flow potential due to even heating of the steam chamber using standard equipment.

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