Crude oil dehydration method organically combining electric field and swirling flow field

Abstract

The invention relates to a crude oil dehydration method organically combining an electric field and a swirling flow field, which is achieved by a crude oil dehydration process consisting of a swirler,a high-frequency pulse dehydration power supply device or other power supply devices, a dehydration electrode and a sewage settling tank, and is characterized by comprising the following steps: enlarging a vortex section, a concentric drawing-down section and a parallel end section of a swirling flow pipe in the same proportion, and setting the swirler consisting of a plurality of swirling flow pipes as a swirler with a single swirling flow pipe; extending an oil outlet pipe of the single swirling flow pipe, vertically inserting the oil outlet pipe into the vortex section as a high-frequencypulse dehydration electrode, or inserting the dehydration electrode into the middle-lower part of the vortex section along the center of the oil output pipe, wherein the output end of the high-frequency pulse dehydration power supply device is connected with the oil outlet pipe or the dehydration electrode through a conducting wire, a crude oil feed pipeline is connected with the inlet of the swirler, and the oil outlet pipe is connected with an oil conveying pipe or a good oil tank; and connecting the parallel end section with the sewage settling tank to form the crude oil dehydration processorganically combining a high-frequency pulse electric field and the swirling flow field.

Description

1. Technical field [0001] The invention relates to a crude oil dehydration method of mine emulsion, in particular to a crude oil dehydration method in which an electric field and a swirl field are organically combined. 2. Background technology [0002] Most of my country's oil regions have entered the stage of medium and high water-cut exploitation, especially in most of the eastern oilfields, the water cut is as high as 80% or more, and some even reach 90% or more. In order to increase oil production and reduce water loss, various new oil recovery technologies have been researched and developed, such as acid fracturing, water plugging and profile control, tertiary oil recovery, microbial oil flooding, etc. The tertiary oil recovery technology has become one of the main means of stabilizing and increasing production in old oilfields, greatly improving the oil recovery rate. Daqing and Shengli Oilfields successively carried out composite flooding tests and polymer flooding p...

AI Technical Summary

Problems solved by technology

Since the cyclone adopts a combined structure of many very thin swirl tubes, the inflow of each swirl tube is uneven, and it is too thin, and the sewage contains more calcium and magnesium ions, H 2 If the S content is too high, fouling and clogging often occur, which makes the operation cycle shorter and the promotion effect is not good, but it does have the advantages of small size, light weight, small footprint and good separation performance.

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