METHOD FOR DEVELOPMENT OF DEPOSIT OF HEAVY OIL OR BITUMEN WITH CONTROL OVER WITHDRAWAL OF WELL PRODUCTION Russian patent published in 2011 - IPC E21B43/24 E21B34/08 

FIELD: gas-and-oil producing industry.

SUBSTANCE: method consists in constructing upper pressure well and lower producing well with horizontal sections located one above another, in pumping heat carrier via horizontal pressure well and in reservoir heating, in formation of steam chamber and in withdrawing production via horizontal producer decreasing withdrawal in zones of temperature peaks presence. Horizontal sections of wells are equipped with sections of filters arranged opposite to zones of a production reservoir; inside the filters in the producer there is installed a shank end of the pump with temperature controlled valves. The valves are positioned opposite to corresponding sections of the filters. Space between sections of the filters from inside is isolated with packing collars, while outside it is isolated with material swelling with water. Withdrawing is reduced by automatic shut-off of the controlled valves till their compete closure in the sections of the filters opposite to which they are arranged.

EFFECT: reduced financial and material expenditures at development of deposit with heavy oil or bitumen; automatic shut-off of one or several intervals of horizontal section of producer with heat carrier inrush.

2 dwg