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 

FIELD: oil and gas production.

SUBSTANCE: procedure consists in construction of upper pressure well and lower producer with horizontal sections arranged one above another, in pumping heat carrier via horizontal pressure well and in reservoir heating, in creating steam chamber and in withdrawing product through horizontal producer. According to the procedure there are recorded thermograms of the steam chamber and there is analysed uniformity of its heating and presence of temperature peaks. On base of obtained thermograms and by changing zones of heating there is performed steam chamber uniform heating. Horizontal sections of wells are equipped with filters. Inside the filter in the producer there is installed a shank end of a pump lowered on the flow string and equipped with by-pass channels with safety valves. The shank end is furnished with inlet orifices breaking the filter into zones of withdrawal. Outside and below an upper orifice the shank end is equipped with a packer mounted above the filter, while inside the shank end is equipped with a piston and rod, internal space of which is communicated with an inlet of the pump via a back valve. Space between the rod and the shank end is pressure tight divided with circular insertions.

EFFECT: reduced financial and material expenditures for implementation of method and increased efficiency of development of heavy oil or bitumen deposit with control of well production withdrawal.

1 dwg