OIL PRODUCTION METHOD Russian patent published in 2014 - IPC E21B43/00 F04B47/00 

FIELD: oil and gas industry.

SUBSTANCE: method includes rising of oil well fluid through a flow column under impact aimed to change physical properties of the fluid. According to the invention impact on oil well fluid is made by electrode heating in a closed working chamber by means of electric power delivery from the ground surface via a multicore electric cable to the electrodes placed inside the working chamber. In result thermal expansion of the oil well fluid and its flowing to the flow column is ensured via a flow channel with low cross section in regard to its length. At that in order to implement filling of the working chamber and electrode heating of the oil well fluid with its further expansion the unit is equipped with a suction valve to ensure delivery of the oil well fluid to the working chamber, with a pressure valve to ensure flowing of the fluid part from the working chamber to the flow column and batch transportation of the fluid to the ground surface and with a shift force valve with ability of its closure upon complete filling of the working chamber with the fluid and its opening upon heating of the oil well fluid up to the preset value.

EFFECT: improving production efficiency due to temperature impact on the produced oil well fluid.

2 cl, 1 dwg