SET OF EQUIPMENT FOR EXTRACTING HIGHLY VISCOUS OIL

摘要

A set of equipment for extracting highly viscous oil comprises a pump-compressor string with an oil-pump drive placed therewithin and an arrangement consisting of an oil pump, a perforated string section with a pump anchor, and a downhole tool, which is in the form of a cylindrical body, mounted consecutively on the mentioned string. A hermetic cavity and an annular chamber with radial channels are arranged consecutively in the mentioned body. A high-frequency elastic-oscillation source in the form of an ultrasonic converter is arranged in the hermetic cavity of the body. The hermetic cavity along the axis of the arrangement is provided with a tie bar having an internal through channel leading into the annular chamber. A distributing device in the form of a movable bushing is mounted on the external surface of the body. The downhole tool is connected by an electric cable to an above-ground electric power source. The set is additionally provided with a storage tank containing a reagent, a pump and a control valve which are arranged above ground and are interconnected by a pipeline, and with a line for feeding the liquid chemical reagent through the internal channel of the tie bar of the hermetic cavity into the annular chamber of the downhole tool.

主权项

1. A set of equipment for extracting highly viscous oil comprising a pump-compressor string with an oil-pump drive placed therewithin and a consecutive arrangement consisting of an oil pump, a perforated string section with pump anchor, and a downhole tool, which is in the form of a cylindrical body in which a hermetic cavity and an annular chamber with radial channels are arranged consecutively; moreover, a high-frequency elastic-oscillation source in the form of a cylinder-shaped ultrasonic converter is arranged in said hermetic cavity of the body of the downhole tool, and said hermetic cavity, along the axis of the arrangement, is provided with a tie bar having an internal through channel leading into the annular chamber, wherein a distributing device in the form of a movable bushing is mounted on the external surface of the body of the downhole tool, and said bushing is fitted with an inner annular groove and multiple-thread screw channels with exit on the bottom-end surface of the bushing, the reverse motion of which is achieved by a spring regulating mechanism; moreover, the downhole tool is connected via the electrical cable to an above-ground electric power source, wherein the set contains above-ground tank with a reagent, a pump, and a regulating valve interconnected by a pipeline, and a line for feeding liquid chemical reagent through the inner channel of the tie bar of the hermetic cavity into the annular chamber of the downhole tool, wherein the perforated string section between the oil pump and the anchor is designed with an opening for connecting the electric power cable and the chemical reagent supply line.