PROCEDURE FOR DEVELOPMENT OF DEPOSIT OF HEAVY OIL OR BITUMEN WITH CONTROL OF PUMPING HEAT CARRIER INTO WELL 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. At construction of wells their horizontal sections are equipped with filters. A flow string of "pipe-in-pipe" type is lowered into the pressure well, where internal spaces are isolated. Outlet orifices of flow strings are arranged in the filter along length of the horizontal section breaking it into heating zones and eliminating heat carrier flood into the producer via a more heated zone. For heat carrier pumping at a well head each flow string is equipped with independent pipelines with controlled gates. The gates control supply of heat carrier depending on a thermogram of the steam chamber recorded in the producer.

EFFECT: raised efficiency of development due to reduced financial and material expenditures for construction of wells and due to control of heat carrier pumping into well via separate intervals along length of total horizontal section of pressure well.

1 dwg