Oil layer electrical heating oil extracting device and using method thereof

Abstract

The invention discloses an oil layer electrical heating oil extracting device. The oil layer electrical heating oil extracting device comprises a special transformer, a control cabinet, an input cable used for connecting the special transformer and the control cabinet, an output cable, an oil pipe used for outputting thickened oil and a hollow screw pump. A plurality of steel armor heating cables are tightly fixed on the outer wall face of an oil conveying pipe through a plurality of cable clamps and are evenly distributed on the periphery of the oil pipe, and the ends, inside a pumping well, of the steel armor heating cables are connected through a heat tracing cable clamp to form a closed loop.

Description

technical field [0001] The invention relates to an oil layer electric heating oil recovery device, more specifically, relates to an oil layer electric heating oil recovery device used for heavy oil or high pour point oil recovery and suitable for offshore oil fields and its application method. Background technique [0002] At present, the steam injection method is commonly used to exploit heavy oil or high pour point oil, while offshore oil fields, especially Bohai Bay Oilfield, mostly use water injection to develop medium heavy oil, that is, inject hot water into the oil layer to make the temperature of the oil layer rise. The distance of water injection in offshore oilfields is very long, but the temperature of the hot water reaching the oil layer is often lower than that of the oil layer, causing cold damage to the oil layer, which in turn makes the crude oil in the oil layer thicker and the recovery rate is low, so the injected water must be heated enough The high temper...

AI Technical Summary

Problems solved by technology

[0002] At present, the steam injection method is commonly used to exploit heavy oil or high pour point oil, while offshore oil fields, especially Bohai Bay Oilfield, mostly use water injection to develop medium heavy oil, that is, inject hot water into the oil layer to make the temperature of the oil layer rise. The distance of water injection in offshore oilfields is very long, but the temperature of the hot water reaching the oil layer is often lower than that of the oil layer, causing cold damage to the oil layer, which in turn makes the crude oil in the oil layer thicker and the recovery rate is low, so the injected water must be heated enough High temperature, making it into high temperature hot water (or steam) into the oil layer

In this way, a large-capacity heating furnace must be used. Because the heating furnace occupies a large area and is unsafe with an open flame, it cannot be used in offshore oil fields.

Images